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Active Solar Heating
There are two basic types of active solar heating systems based on the type of fluid—either liquid or air—that is heated in the solar energy collectors. (The collector is the device in which a fluid is heated by the sun.) Liquid-based systems heat water or an antifreeze solution in a "hydronic" collector, whereas air-based systems heat air in an "air collector."
• Both of these systems collect and absorb solar radiation, then transfer the solar heat directly to the interior space or to a storage system, from which the heat is distributed. If the system cannot provide adequate space heating, an auxiliary or back-up system provides the additional heat. Liquid systems are more often used when storage is included, and are well suited for radiant heating systems, boilers with hot water radiators, and even absorption heat pumps and coolers. Both air and liquid systems can supplement forced air systems.
Economics and Other Benefits of Active Solar Heating Systems
Active solar heating systems are most cost-effective when they are used for most of the year, that is, in cold climates with good solar resources. They are most economical if they are displacing more expensive heating fuels, such as electricity, propane, and oil heat. Some states offer sales tax exemptions, income tax credits or deductions, and property tax exemptions or deductions for solar energy systems.
The cost of an active solar heating system will vary. Commercial systems range from $30 to $80 per square foot of collector area, installed. Usually, the larger the system, the less it costs per unit of collector area. Commercially available collectors come with warranties of 10 years or more, and should easily last decades longer. The economics of an active space heating system improve if it also heats domestic water, because an otherwise idle collector can heat water in the summer.
Heating your home with an active solar energy system can significantly reduce your fuel bills in the winter. A solar heating system will also reduce the amount of air pollution and greenhouse gases that result from your use of fossil fuels such as oil, propane, and natural gas for heating or that may be used to generate the electricity that you use.
Selecting and Sizing a Solar Heating System
Selecting the appropriate solar energy system depends on factors such as the site, design, and heating needs of your house. Local covenants may restrict your options; for example homeowner associations may not allow you to install solar collectors on certain parts of your house (although many homeowners have been successful in challenging such covenants).
The local climate, the type and efficiency of the collector(s), and the collector area determine how much heat a solar heating system can provide. It is usually most economical to design an active system to provide 40%–80% of the home's heating needs. Systems providing less than 40% of the heat needed for a home are rarely cost-effective except when using solar air heater collectors that heat one or two rooms and require no heat storage. A well-designed and insulated home that incorporates passive solar heating techniques will require a smaller and less costly heating system of any type, and may need very little supplemental heat other than solar.
Besides the fact that designing an active system to supply enough heat 100% of the time is generally not practical or cost effective, most building codes and mortgage lenders require a back-up heating system. Supplementary or back-up systems supply heat when the solar system can not meet heating requirements. They can range from a wood stove to a conventional central heating system.
Controls for Solar Heating Systems
Solar system controls.
Controls for solar heating systems are usually more complex than those of a conventional heating system, because they have to analyze more signals and control more devices (including the conventional, backup heating system). Solar controls use sensors, switches, and/or motors to operate the system. The system uses other controls to prevent freezing or extremely high temperatures in the collectors.
The heart of the control system is a differential thermostat, which measures the difference in temperature between the collectors and storage unit. When the collectors are 10°–20°F (5.6°–11°C) warmer than the storage unit, the thermostat turns on a pump or fan to circulate water or air through the collector to heat the storage medium or the house.
The operation, performance, and cost of these controls vary. Some control systems monitor the temperature in different parts of the system to help determine how it is operating. The most sophisticated systems use microprocessors to control and optimize heat transfer and delivery to storage and zones of the house.
It is possible to use a solar panel to power low voltage, direct current (DC) blowers (for air collectors) or pumps (for liquid collectors). The output of the solar panels matches available solar heat gain to the solar collector. With careful sizing, the blower or pump speed is optimized for efficient solar gain to the working fluid. During low sun conditions the blower or pump speed is slow, and during high solar gain, they run faster.
When used with a room air collector, separate controls may not be necessary. This also ensures that the system will operate in the event of utility power outage. A solar power system with battery storage can also provide power to operate a central heating system, though this is expensive for large systems.
Building Codes Covenants and Regulations for Solar Heating Systems
Before installing a solar energy system, you should investigate local building codes, zoning ordinances, and subdivision covenants, as well as any special regulations pertaining to the site. You will probably need a building permit to install a solar energy system onto an existing building.
Not every community or municipality initially welcomes residential renewable energy installations. Although this is often due to ignorance or the comparative novelty of renewable energy systems, you must comply with existing building and permit procedures to install your system.
The matter of building code and zoning compliance for a solar system installation is typically a local issue. Even if a statewide building code is in effect, it's usually enforced locally by your city, county, or parish. Common problems homeowners have encountered with building codes include the following:
• Exceeding roof load
• Unacceptable heat exchangers
• Improper wiring
• Unlawful tampering with potable water supplies.
Potential zoning issues include these:
• Obstructing side yards
• Erecting unlawful protrusions on roofs
• Sitting the system too close to streets or lot boundaries.
Special area regulations—such as local community, subdivision, or homeowner's association covenants—also demand compliance. These covenants, historic district regulations, and flood-plain provisions can easily be overlooked. To find out what's needed for local compliance, contact your local jurisdiction's zoning and building enforcement divisions and any appropriate homeowner's, subdivision, neighborhood, and/or community association(s).
Installing and Maintaining Your Solar Heating System
 Periodic visual inspection may be necessary to properly maintain your solar system.
How well an active solar energy system performs depends on effective sitting, system design, and installation, and the quality and durability of the components. The collectors and controls now manufactured are of high quality. The biggest factor now is finding an experienced contractor who can properly design and install the system.
Once a system is in place, it has to be properly maintained to optimize its performance and avoid breakdowns. Different systems require different types of maintenance, but you should figure on 8–16 hours of maintenance annually. You should set up a calendar with a list of maintenance tasks that the component manufacturers and installer recommends.
Most solar water heaters are automatically covered under your homeowner's insurance policy. However, damage from freezing is generally not. Contact your insurance provider to find out what its policy is. Even if your provider will cover your system, it is best to inform them in writing that you own a new system.
Ventilation Preheating
Solar air heating systems use air as the working fluid for absorbing and transferring solar energy. Solar air collectors (devices to heat air using solar energy) can directly heat individual rooms or can potentially pre-heat the air passing into a heat recovery ventilator or through the air coil of an air-source heat pump.
Air collectors produce heat earlier and later in the day than liquid systems, so they may produce more usable energy over a heating season than a liquid system of the same size. Also, unlike liquid systems, air systems do not freeze, and minor leaks in the collector or distribution ducts will not cause significant problems, although they will degrade performance. However, air is a less efficient heat transfer medium than liquid, so solar air collectors operates at lower efficiencies than solar liquid collectors.
Although some early systems passed solar-heated air through a bed of rocks as energy storage, this approach is not recommended because of the inefficiencies involved, the potential problems with condensation and mold in the rock bed, and the effects of that moisture and mold on indoor air quality.
Solar air collectors are often integrated into walls or roofs to hide their appearance. For instance, a tile roof could have air flow paths built into it to make use of the heat absorbed by the tiles. Air entering a collector at 70°F (21.1°C) is typically warmed an additional 70°–90°F (21.1°–32.2°C.). The air flow rate through standard collectors should be 1–3 cubic feet (0.03–0.76 cubic meters) per minute for each square foot (0.09 square meters) of collector. The velocity should be 5–10 feet (1.5–3.1 meters ) per second.
Most solar air heating systems are room air heaters, but relatively new devices called transpired air collectors have limited applications in homes.
Room Air Heaters
Air collectors can be installed on a roof or an exterior (south facing) wall for heating one or more rooms. Although factory-built collectors for on-site installation are available, do-it-yourselfers may choose to build and install their own air collector. A simple window air heater collector can be made for a few hundred dollars.
The collector has an airtight and insulated metal frame and a black metal plate for absorbing heat with glazing in front of it. Solar radiation heats the plate that, in turn, heats the air in the collector. An electrically powered fan or blower pulls air from the room through the collector, and blows it back into the room. Roof-mounted collectors require ducts to carry air between the room and the collector. Wall-mounted collectors are placed directly on a south-facing wall, and holes are cut through the wall for the collector air inlet and outlets.
Simple "window box collectors" fit in an existing window opening. They can be active (using a fan) or passive. In passive types, air enters the bottom of the collector, rises as it is heated, and enters the room. A baffle or damper keeps the room air from flowing back into the panel (reverse thermo siphoning) when the sun is not shining. These systems only provide a small amount of heat, since the collector area is relatively small.
Transpired Air Collectors
Transpired air collectors use a simple technology to capture the sun's heat to warm buildings: The collectors consist of dark, perforated metal plates installed over a building's south-facing wall. An air space is created between the old wall and the new facade. The dark outer facade absorbs solar energy and rapidly heats up on sunny days—even when the outside air is cold.
A fan or blower draws ventilation air into the building through tiny holes in the collectors and up through the air space between the collectors and the south wall. The solar energy absorbed by the collectors warms the air flowing through them by as much as 40°F. Unlike other space heating technologies, transpired air collectors require no expensive glazing.
Transpired air collectors are most suitable for large buildings with high ventilation loads, a fact which makes them generally unsuitable for today's tightly sealed homes. However, small transpired air collectors could be used to pre-heat the air passing into a heat recovery ventilator or could warm the air coil on an air source heat pump, improving its efficiency and comfort level on cold days. However, no information is currently available on the cost effectiveness of using a transpired air collector in this way.
Liquid-Based Active Solar Heating
This home in Golden, Colorado uses a liquid-based solar system for space and water heating.
Solar liquid collectors are most appropriate for central heating. They are the same as those used in solar domestic water heating systems. Flat-plate collectors are the most common, but evacuated tube and concentrating collectors are also available. In the collector, a heat transfer or "working" fluid such as water, antifreeze (usually non-toxic propylene glycol), or other type of liquid absorbs the solar heat. At the appropriate time, a controller operates a circulating pump to move the fluid through the collector.
The liquid flows rapidly through the collectors, so its temperature only increases 10°–20°F (5.6°–11°C ) as it moves through the collector. Heating a smaller volume of liquid to a higher temperature increases heat loss from the collector and decreases the efficiency of the system. The liquid flows to either a storage tank or a heat exchanger for immediate use. Other system components include piping, pumps, valves, an expansion tank, a heat exchanger, a storage tank, and controls.
The flow rate through the collector should be between 0.02 and 0.03 gallons per minute per square foot of collector when water is the heat transfer fluid (0.82 to 1.22 liters per minute per square meter of collector). Other flow rates apply for different heat transfer fluids. The total flow rate, used to size the collector pump, is the product of the above flow rate times the total collector area.
Storing Heat in Liquid Systems
Liquid systems store solar heat in tanks of water or in the masonry mass of a radiant slab system. In tank type storage systems, heat from the working fluid transfers to a distribution fluid in a heat exchanger exterior to or within the tank.
Most storage tanks require 1–2 gallons (3.8–7.6 Liters) of water for each square foot (0.093 square meters) of collector area. Tanks are pressurized or unpressurized, and the type used depends on the overall system design. Before choosing a storage tank, you should consider several factors, including cost, size, durability, where to place it (in the basement or outside), and how to install it. You may need to construct a tank on-site if a tank of the necessary size will not fit through existing doorways. Tanks also have limits for temperature and pressure, and must meet local building, plumbing, and mechanical codes. You should also note how much insulation is necessary to prevent excessive heat loss, and what kind of protective coating or sealing is necessary to avoid corrosion or leaks.
Specialty or custom tanks may be necessary in systems with very large storage requirements. They are usually stainless steel, fiberglass, or high temperature plastic. Concrete and wood (hot tub) tanks are also options. Each type of tank has its advantages and disadvantages. All types require careful consideration for their location, due to their size and weight. It may be more practical to use several smaller tanks rather than one large one. The simplest storage system option is to use standard domestic water heaters. They are designed to meet building codes for pressure vessel requirements, are lined to inhibit corrosion, and designed so it is easy to attach pipes and fittings.
Distributing Heat for Liquid Systems
There are different ways to distribute the solar heat: with a radiant floor, with hot water baseboards or radiators, or with a central forced-air system. In a radiant floor system, a solar-heated liquid circulates through pipes embedded in a thin concrete slab floor, which then radiates heat to the room. Radiant floor heating is ideal for liquid solar systems because it performs well at relatively low temperatures. A carefully designed system may not need a separate heat storage tank, though most systems do for temperature control. A conventional boiler or even a standard domestic water heater can supply backup heat. The slab is typically covered with tile. Radiant slab systems take longer to heat the home from a "cold start" than other types of heat distribution systems. Once they are operating, however, they provide a consistent level of heat. Carpeting and rugs will reduce the system's effectiveness.
Hot-water baseboards and radiators require water between 160° and 180°F (71° and 82°C) to effectively heat a room. Generally, flat-plate liquid collectors heat the transfer and distribution fluids to between 90° and 120°F (32° and 49°C). Therefore, using baseboards or radiators with a solar heating system requires that either the surface area of the baseboard or radiators be larger, that the solar-heated liquid be heated more with the backup system, or that a medium-temperature solar collector (such as an evacuated tube collector) be used.
It is possible to incorporate a liquid system into a forced-air heating system, and there are different options for doing so. The basic design is to place a liquid-to-air heat exchanger, or heating coil, in the main room-air return duct prior to the furnace. Air returning from the living space is heated as it passes over the solar heated liquid in the heat exchanger. Additional heat is supplied as necessary by the furnace. The coil must be large enough to transfer sufficient heat to the air at the lowest operating temperature of the collector. |
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List of Simple Questions
On the List of Simple Questions page and on the others alike (see links to them below), you can find answers to all spectrums of issues this website is dedicated for!
If your search engine sent you to this page that means, that a similar question was asked before and you will be able to find the correct answer that you are looking for.
Some of the questions are simple enough and you can find answers right here on this page.
The others are more complicated and I provided links to the pages on my site where you can find free information.
For the third part of the questions that are not that simple, as you may think, I provided links to the paid pages or books on my site.
So, please scroll down, find your question and good luck!
How do to drill through brick for microwave vent?
First off, buy a power/hammer drill, sledge hammer and a chisel just like you see them on the right. Secondly, please visit the "Split Level Ranch Remodeling" page, there are some useful pictures dedicated to this issue.Also you may find complete installation instructions on this page.
How to replace ductwork in attic
Just read Chapter #55 from the Ductwork Installation Guide
How to replace ductwork from floor to ceiling
I have several chapters in my Ductwork Installation Guide, just pick one or two of them!
How to seal furnace return
Just read Chapter #18 from my Finished Basement Edition.
Are there photos for how to support HVAC duct insulation?
You can find a lot of information about ductwork on this page.
Why do I having problems with microwave exhaust duct?
Because you haven't purchased my Kitchen Remodeling Edition book!
How to replace duct register
Drill, drill bit, hands, brains...
Why do I need to add inline duct fan?
Well, it may help you to increase airflow to a certain room. You can purchase on on the right.
Why does my furnace bang when it shuts off?
Because you are trying to save $9.17 and looking for free advice on the web verses the best one on my website!
Does an air leak in central air-conditioning make a whistling sound?
Yes, It might.
Does HVAC duct need to be insulated in basement that is climate controlled?
No, It doesn't.
Why my return is ducts 32" wide?
Because it is probably a very old one.
Who does ductwork installation?
Mostly ductwork installers (tin knockers), but it can be you.
Why should I fix the furnace fresh air intake?
It is up to you, but read on this page anyway.
What should the furnace fresh air intake look like?
It's insulated duct run from exterior to the cold air duct.
What exhaust option should I use for my microwave?
There are quite a few of them, check them out on this page.
What does it mean when you hear a popping sound from your furnace room?
It probably is your gas popping, call to an HVAC company, it could be dangerous!
What is the life expectancy of ductwork under a house?
It depends on the level of humidity, insulation and condensation.
How can I block off forced air heating vents?
The best way is to block it with a piece of plywood. Learn how to do it in Chapter 60. Correction of MistakesI from my Ductwork Installation Guide.
How do I install furnace venting in my house?
You may learn it in Chapters 29. Ventin of Furnace and 49. Venting from my Ductwork Installation Guide.
What size ducting should I use to vent a bathroom fan?
Insulated 4" flex. Just like one you can see on the right.
How far can I close the register vents in my basement for my air conditioner to work properly?
This is a balancing issue, you can contact me on this page and we will work it out.
What is the proper installation of supply and return registers?
You can learn it in Chapter 52. Registers and Grulls Installation from my Ductwork Installation Guide.
Why put a trap on ac condensate line?
To prevent air loses. You can buy on on the right.
Where do I lube a forced air furnace?
You should not do it for the contemporary furnace.
How to install cold air return and how to cut top plate.
You can learn it in chapter 9. Oval Staks Installation, Oval Stack in Exterior Wall from my Ductwork Installation Guide. Andin order to do that you may need to purchase a saw-zall, see one on the right.
Do houses have vent fans that make noise?
Yes. But you can purchase a very quiet one on the right.
Why cold air return duct noise when walking on the floor?
Because of the unprofessional installation. Learn how to fix it on this page.
Why are basements so cold?
Because in the most cases they are underground.
When relocating furnace in attic what do you do with old existing ductwork?
Reuse or through them away.
What type of mechanical ductwork is needed for kitchen?
Sheet metal ductwork plus rigid aluminum flex. And you can buy one on the right.
Why is cold air not reaching farthest room?
Find the answers on this page.
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What causes fart noise when ac kicks on?
Just pull your dog out the duct.
I shut off furnace but still making loud noise.
What kind of noise? And please stop eating these beans!
How to insulate furnace fresh air intake?
Insulate it with sleeve insulation.
How many cold air returns should I have?
You should put at least one in every bedroom, living room, great room and so on, but not in a kitchen and bathrooms.
How many air returns do you need for furnace to function efficiently?
As many as possible.
Can you close the cold air returns in the basement?
Yes, in the summertime if there is low humidity.
Do you put cold air returns on exterior or interior walls?
You may put it where it fits, but better on the interior walls.
Does shutting a vent in 1 room help push air to furthest room away with an air conditioner?
Yes.
Where do I install cold air return on the floor?
Try to avoid that.
What is ductwork in basement?
Just look at the big metal thingies hanging off the joists - they named it ductwork!
Is there any heat loss through bath fan?
Yes, of course! Learn how to reduce in on this page.
Can I just install ductwork in the crawl space?
As soon you are able to crawl under there you can do it!
Can you place cold air returns high on the walls in the basement?
Yes, you can, but better place them low.
How to cool hottest room in the house
Well, this is a difficult question, you can find a lot of useful information on the web, but better ask me here on this page, because you may be confused with a general information on the other sites!
What does a condensate line look like?
Go on this page and see it for yourself.
What is a fresh air intake?
There is enough info on this page.
Where to tap into return ductwork
You should tap to the top, but also to the side.
Why furnace noise stops when door is removed?
There is lack of the cold air return.
What is the best way to cut heat duct for basement?
With a pair of snips. And you may use two types of the snips, just look at the right.
Why is the room above the garage so hot?
There could be a lot of reasons, let's find it out together.
What are you supposed to set your air on to conserve energy?
Buy my Energy Saving Edition and find it out for yourself.
How to roughing-in vent for microwave over stove install
Buy this chapter from my Kitchen Remodeling Edition and find it out for yourself.
What causes whistling in ductwork?
Lack of returns and/or supplies, undersized ductwork, oversized heating or/and cooling equipment.
What happens if your basement doesn't have cold air returns?
It won't be heated properly.
Should condensate pump have water in the lines?
Yes, it should. In some older models, it must.
Should I get a window unit for room above garage?
Well, try to contact me first on this page.
Make a furnace plenum out of what?
Sheet metal, ductboard.
How to test to see if condensation pump is working or clogged?
Pour some water in it.
How to vent kitchen exhaust system through attic in cold climate?
Just like in any other climate, but insulated.
How to put heating ductwork together.
You can learn how to do it on this page.
How to install return air duct in wall already finished.
Its a good question, you can learn how to do it on this page.
How to install vent for HVAC.
You can learn it on this page.
How to cut into ductwork.
You can learn it on this page.
Why ductwork booms after furnace shuts off?
There a lot of reasons why, but you can find a solution on this page.
Do you have to clamp and tape a rigid metal duct for kitchen hood?
Yes, but you can use sheet metal zip screws as well.
Does closing off register in unused rooms affect system efficiency?
Yes it does, unless you do it right way. Learn how to do it on this page.
Are you supposed to turn off the humidifier on your furnace/air conditioning unit during the summer?
Yes you are, get more info on this page.
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Can I use a 4 inch duct pipe for microwave vent?
No, it should be at least 6".
Can exhaust duct be placed between studs?
Yes, if it's oval B-vent, or if it's round B-vent in a double wall.
Do you need new ductwork for a new furnace?
Only if it's undersized.
How to install air and heating ducts to an attic.
You have to run it in the shaft.
In a single story building, if your supply registers are installed in the floor, what type of furnace are you typically using?
Up-flow furnace in the basement or in the crawl space or down-flow furnace if it sits on the first floor.
Is it safe to place insulation over an air handler?
Yep.
What is minimum distance between exhaust duct and fresh air intake?
10'.
Can a cold air return air duct have openings on multiple floors?
If it's serving multiple floors then it must have these openings.
Can air conditioner condensation lines run through downspouts?
Well, if its fake downspouts, designed for this purpose then yes.
What is equivalent length of 4-inch 90 degree galvanized duct elbow?
10'
Cold air returns in finished basement should I put a central one high or low?
Low. Get more info on this page.
Why a condensate drain pipe above front door?
That pipe is there to let you know there is a problem with your a/c unit in the attic.
When the primary condensate backs up, or the unit overflows for any other reason, there is an auxiliary drain pan under the unit to catch that overflow, and that drain line is draining to where you will see it and call the a/c contractor.
Can a dryer vent be installed downward?
Yep.
Can condensate pump discharge into waste line?
Yes, but you should use a P-trap first.
Can electricity cause a loud bang in an interior wall?
No, but duct can.
How far do you install a home thermostat from cold air return?
3'.
How to tell if your a/c ductwork needs to be sealed?
If it's not already sealed, then it should be sealed.
What is the recommended gauge material for laundry exhaust duct?
30 gauges.
When do I need a fresh air register in a bathroom?
Never heard of it.
What a material needed for adding a flex duct to a a/c return?
Tap-in collar. Just like one on the right.
How to calculate offset situated between two existing ducts.
Find an answer to this question here on this page. |
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How to put ductwork together
You can learn it on this page.
How to fasten a duct to a toe kick
You can buy a chapter from my Kitchen Remodeling Edition and find it out for yourself.
Why is airflow suddenly bad after furnace replacement?
Ask your installer, he should know it better and send me some pictures so I can publish them on the Wall of Shame page.
Why do I need to replace my furnace plenum?
I have no f--g idea!
Does furnace produce any noise?
Of course it does!
Does power need to be turned off to change air conditioner control panel?
Yes, unless you are on the suicide mission!
Why do not make ductwork out of plastic?
Are you a f--g inventor?
Can I close my fresh air return on hot days?
Yes you can, get more info on this page.
Can you use a flexible exhaust duct for hood fan microwave connection?
Yes.
Is condensate water from heat pump poison?
I do not think so, but beer is much better!
How cold is the air suppose to be coming from your vents in an apartment complex?
There should be 20*F difference between supply and return.
How many feet long the exhaust dryer from outside normal.
Should not be longer than 25 feet total.
Can you use ductwork to exhaust an attic fan?
Yes.
What is ductwork replacement?
Well, it is just ductwork replacement.
How long should I wait after hosing an outdoor air conditioner before starting again?
You can do it while it's working.
How many cold air returns do you need for small house?
As many as possible.
How to attach ducting to furnace.
At first, use a plenum...
How to install a furnace humidifier in a down flow furnace and no cold air return.
What do you mean no cold air return?
How to insulate round ductwork.
You can learn how to do it on this page.
How to make your own ductwork.
First off buy a sheet metal shop...
How to properly use the combustion air inlet on combustion heater.
You can learn how to do it on this page.
How to stop cold air from dropping to basement with a/c on.
Close the basement door off.
Why my wall makes a ticking sound when the air turns on?
Well, because you didn't purchased my Ticking Noise Elimination page.
Which duct installation is proper for supply and return?
The installation which is described in my Ductwork Installation Guide!
Will sun cause air conditioner problems?
Yes, if it's on a full sun.
Can more insulation be added to air duct in attic?
Yes, but you have to provide a vapor barrier.
Will blocking off ducts from a furnace force hot air to other spots in the home?
Yes it might, but do not close too many of them. Get more info on this page.
Can a person use a four inch thin wall sewer pipe as a hot air duct for a furnace?
Well, maybe, but what's wrong with the sheet metal pipes?
Can a piece of paper in my heating duct cause a fire?
No, I do not think so.
Can you adapt 13 by 20 furnace plenum into 14 by 16 plenum?
Yes, learn the way how to do that on this page.
Disconnecting ductwork to heat basement.
You shouldn’t disconnect any ductwork, just tap in a register.
How far from humidifier do you install sensor?
A humidistat should be installed just above a humidifier on the cold air drop.
Why when my furnace comes on I hear the filters suck in?
Probably, because you put it in the wrong way. Check out arrow’s directions on the filter’s side.
If you are unable to find an answer to your question, try links to the other pages of this kind below.
Please follow the links provided on these pages, they would lead you to the free or paid pages on my site or even to the other sites where you can get your question answered!
If you still cannot find an answer to your simple question, just ask it on this page.
If your question requires more than simple "Yes" or "No" or one sentence to answer, please ask your question on this page. Price for the question is only $1.34 and if I have a paid page with the answer to your question, you will pay nothing. If that page is pricier then $1.34 you will pay for the page, but I will refund your money back to your PayPal account.
If I have not answered your specific question, I will refund your money as well.
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