Huether explains that blocked air vents force your HVAC system to work harder, increasing energy use by as much as 25 percent ...

Why is attic ventilation such a big deal? You hear the Guys talk about it incessantly, especially this time of year. Most often, in the Midwest, the attic is considered unconditioned space, meaning ...

What do we look for in a spring air conditioner tune-up, and what is the most expensive problem AC systems can have? -- D.R.P., Tulsa. Duct, why a duct? A big concern with older air-conditioning ...