Having spent 30+ years in residential ... HVAC technology and emphasizing energy efficiency, from introducing the first high-efficiency gas furnace in 1984 to integrating hybrid dual fuel systems ...

Find out what the highest MERV-rated filter is that still allows ... it might not be the most efficient choice for some residential HVAC systems. In fact, MERV 11 may even be too restrictive.

Having spent 30+ years in residential construction ... However, mini-splits have more in common with other types of HVAC systems in that they’re immobile once installed, unlike window air ...

One way to focus your decision-making is to look at a single feature, such asenergy efficiency, and identify the brands and models youd like to consider, says Dan Stout, former residential remodeler .

“For residential use, air filters are typically rated between MERV 5 to 13 ... health facilities that are equipped with powerful HVAC systems that are capable of drawing the air through ...