In today’s HVAC systems, both the heating and the cooling functions are almost always delivered through the same duct and diffuser systems. These systems are normally designed with the cooling ...

A common idea promoted across the industry is that any heat lost from an uninsulated duct system to a conditioned space isn’t truly lost and has no effect on energy consumption. Most contractors would ...

Q: I have a single story ranch house built on a concrete slab, with concrete under-floor ducts for the heating system. One of the duct runs has a slight musty smell coming from it: the smell has been ...

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 ...