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This is one of those questions where ones vested interest in duct cleaning machines might preclude an honest answer. The facts are that once any dust particles, etc. that have made it through your air filter system, have fallen to rest in your ductwork (very small total quantity), the chances of them ever becoming airborne again is not likely. The exception to this rule would occur if a change of equipment caused an increase in air velocity (speed and quantity of air passing by a given spot in the ductwork). If you are concerned with airborne contaminants, my suggestion would be to invest the duct cleaning funds instead into a good filter system. While electronic systems claim high efficience numbers, a 4" pleated filter with an electropheretic enhancer installed upstream of the filter will provide the same filtration efficiency without the inherent service issues and expenses as with electronic units. You would change the filter about once a year and be done with it. Let's face it, you go in and out of your house allowing outdoor contaminants in constantly. The best fix is to deal with them on an ongoing basis. If you choose to have a 4" filter unit installed, have a good contractor do the work and have him "seal" the ductwork on the return side of the furnace or air handler. This insures that any particles cannot bypass the filter. While installing the filter, consider having the contractor install a 4"-6" duct routed to the outside air and tapped into the return air upstream of the filter. Have them install a manual damper (for adjustment purposes). This type of setup provides two critical features. The air inside your home is worse for you generally speaking, than the air outside. 1) This setup allows you to bring fresh air into your home whenever the blower is operating. (Many will run blower on low speed 24/7) 2) This outside air will positively pressurize your home, reducing the quantity of dust and contaminants introduced through door openings, etc. This type of sutup is required by many local building codes and "Super Good Cents" home construction guidelines. Many manufacturers have "whole house ventilators" available. These setups use four ducts to provide constant fresh air introduction to the conditioned space. These are not cheap however and are tough in a retrofit situation. Advantages include their ability to transfer a majority of the heat from the exaust stream to the supply fresh air stream. Inquire of your contractor whitch setup might benefit you most. Sorry for the longwinded answer. Hope it helped though. lc
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When should air ducts in a home be replaced?
they should be replaced when they either have holes in them or are comming apart. also if you upgrade your furnace you may need big duct work. also they should be cleaned every couple years
What do you need to do to change duct work from using a fuel oil furnace to propane furnace?
If both systems are forced air systems it's possible to use the existing duct work; however, with out viewing you project, I would suggest having an air duct specialist evaluate your system to determine if modifications are necessary .
Can you use a down draft as an updraft furnace?
yes u can if u are good with duct work put a down draft furnace in a basement and pipe it up one floor well not recommended it will work i did this to help a lady get threw winter who had low funds and it has worked quite well u need to build a custom box for the furnace to sit on to make this work and pipe directly from box and use smallest duct work u can i.e mobile home duct work or 4 to 6 inch What you did is still a downdraft furnace
Do you have to purchase a new furnace to get central AC or can central AC be added with an existing furnace using the existing duct work?
My parents did it with existing ductwork.
Where is the filter located on a central air conditioner?
the filter on a central unit is the same as the furnace filter usually located in duct work directly beside furnace
Is there a special kind of duct work needed when installing a new furnace, when using an I-beam for the floor joist Does the steel I-beam have anything to do w/what kind of duct work is installed?
The duct work does not need to be different from the rest just because of the I beam. Just be sure there is room so you do not compress it.
What You Need to Know About Getting Your Air Ducts Cleaned?
Before you make a decision if you should get your air ducts cleaned, you require knowing a little about how they work and why they collect dirt. You can simply tell the difference between return and supply ducting by going down to your basement and inspecting the sheet metal ducting typically found hanging from the floor joists on the ceiling. The return duct is typically a large rectangle that is attached to the bottom of your heating system, while the supply duct comes out the top of the furnace. The supply duct is usually made up of a large "trunk" duct on the ceiling, along with smaller metal ducts that branch off into each heated room. You'll find them often covered by a metal grate on the floor or the wall.
How often should work stations should be cleaned?
every day
How much does it cost to relocate a furnace?
Cost depends on where the furnace is to be relocated. Duct work transitions may need to be made, electrical and gas lines may also need to be ran. Contact a reputable HVAC contractor to give you an estimate.
Where can I find cleaning services for my duct work?
It depends on where you live. You should either consult your local phonebook or type "duct work cleaning" into an internet search engine.
Your furnace duct work pops loudly for up to 30 min after furnace shouts off whats up?
It's expanding and contracting as it gets hotter and cooler. If it gets too bad try wrapping in fiberglass insulation. Or call an HVAC specialist.
How do you stop duct work of furnace contracting and expanding with air conditioner usage?
You don't. If the temp chances, the metal will expand and contract. There are tricks you can use: expansion joints and flexible corners that partly compensate.
