Should I replace metal duct in a 1950s home with the current flex duct? Or is cleaning better?

— Michael Whittier, CA

Answered by Rick Goyette on April 29, 2010

I need to replace my ducts. What type of duct would be best?

— Nadine Findley Concord, CA

Answered by David Lavender on April 25, 2010

What is the best way to heat a big open floor? Ductless units or a radiant baseboard unit?

— B Stewart Washington, DC

Answered by Andrea Foss on March 29, 2010

Does a programmable thermostat really save 20% on my utility bills?

— Brenda Nabors Brooklyn, NY

Answered by Steve Saunders on March 15, 2010

How many watts are required for a self-sustaining house that relies on sunlight for heating?

— Sam Duluth, GA

Answered by Christian Kienapfel | AIA Architect | RA | LEED AP | Dipl.-Ing. Architekt (Germany) on March 12, 2010

If there is no heating system required for a passive house design, will I be wearing a sweater most of the winter to keep the chill off?

— Zeta Olympia, WA

Answered by Tessa Smith on March 12, 2010

Can you recommend cost-effective auxiliary HVAC solutions for a passive solar home?

— Michael Schonlau

Answered by Kristina Hahn | AIA | RA | LEED AP+HOMES on March 8, 2010

What are the pros and cons of electric cove radiant heating for our home in terms of efficiency, safety, and reliability?

— Shelly Manhattan Beach, CA

Answered by Kristina Hahn | AIA | RA | LEED AP+HOMES on March 8, 2010

What is causing the pressure relief valve on our gas-fired hot water baseboard heating unit to leak?

— jorge Bayonne, NJ

Answered by Erik Henry on March 8, 2010

What are the best ways to reduce my electric and propane consumption for heating and air conditioning? What should we do first?

— Gregory Ayres

Answered by Danny Kelly on January 28, 2010

 

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