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Which is more energy efficient: central AC or in-window air conditioners?

— Laura Bianchi Payne Cupertino, CA

Answered by Randy Potter on February 27, 2011

My home is on concrete slab, and the heat ducts are laid in the concrete. Most of the hot air is lost due to cold soil.

— Thomas Gharib Albuquerque, NM

Answered by Christopher Moline LEED AP on February 27, 2011

How can I tell if my air conditioner guy is sizing the correct unit for my house?

— David L. Roth Fort Myers Beach, FL

Answered by Rob Smith, LEED AP H on January 28, 2011

What is the cheapest way to efficiently heat individual rooms in a multi-tenant house?

— Evan Napa, CA

Answered by Harold Remlinger, AIA, LEED AP, NCARB on January 18, 2011

I have a log home. Will insulating my interior walls lower my electric bill?

— jerry h. Hopkins, SC

Answered by Harold Remlinger, AIA, LEED AP, NCARB on January 18, 2011

I'm looking to heat a small house with a gas tankless hot water system. Is this a good idea?

— mark Derry, NH

Answered by Ted Kidd on January 17, 2011

How do you seal leaky ductwork?

— denise mack Utica, MI

Answered by David Edwards PhD on January 15, 2011

What is the best way to circulate heat downward in a room with 14' ceilings where the heat ducts are at the top?

— Lindsey Kansas City, MO

Answered by graham swett on January 7, 2011

What is the best replacement for 1950s-era ductwork in an HVAC system?

— Bill Seeger Riverside, IL

Answered by Harold Remlinger, AIA, LEED AP, NCARB on January 6, 2011

How should we heat and cool our new garage addition?

— linda Salt Lake City, UT

Answered by Harold Remlinger, AIA, LEED AP, NCARB on January 5, 2011

 
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