The furnace fan produces high pressure in the supply ducts and low pressure in the return ducts. The high-pressure forces warm air from the supply ducts to flow into the rooms; low pressure draws room ...

Leaky return ducts pull hot or cold attic or crawl space air into the system. Indeed, a duct that runs through the attic can pull in 140F air in summer, making the cooling system work that much ...

When an open filter rack is installed on equipment located in an attic, depressurization can lead to an increased heating load during the cooling mode of operation, which can also lead to air quality ...

The ducts for the system should be insulated in the attic if that space is not heated, but this should not be a significant expense. By not insulating the roof and the side walls of the attic, you ...

To cover any holes and seal the joints, use silver aluminum-foil tape, as opposed to the traditional duct tape. If you have an attic system, pay close attention to the insulation on the supply ...

Using your attic clears storage space. If you have your furnace in the garage, the basement or a closet, you lose that space ...

Question: I have a question about my air conditioner. The air handler in the attic gets a lot of mildew on the outside of the unit and around the ductwork. Mildew builds up in the drain pan and the… ...

Q How can I install a heat recovery ventilator (HRV) in my home when I have no existing ducts? I’m told I need ducts for the ...