One of the most cost-effective and energy-conserving measures you can take is to insulate duct or pipe runs in the unheated areas of your home. By not insulating these conduits, you are essentially ...

Q. This week: Is there any way to reline or replace metal heat ducts under a concrete slab floor without tearing up the floor? We had our ducts commercially cleaned five years ago, when we were having ...

Fiberglass insulation is not airtight. Heck, it will barely even slow air propelled by convection, differential pressure or wind. It is especially helpless against air moving through a leaky pipe ...

Clean air vents are one of the simplest ways to protect your indoor air quality, keep energy bills in check, and extend the ...

Dear Jim: We are considering installing a heat pump or central air conditioner. We currently have radiant heating. I have heard mini-duct systems are very comfortable and quiet. How do they work? Jack ...

Ask any bug: There's no place like a warm crawl space to spend the cold winter months. Why huddle beneath some freezing leaf when you can snuggle under a house that a human pays to heat? Of course, ...

In the winter, I get a lot of e-mails from homeowners who are worried about their home's heating system. Their furnace runs constantly -- to the point that they're afraid to open their gas bills -- ...

Airflow velocity in a residential HVAC market duct system is an important design consideration. Although designing for proper velocity applies to all ducted HVAC construction systems — heat pumps, air ...