Green solar water heater Questions

I am looking at either a PV system or solar hot water. Which has the biggest ROI?

— Terry Luttrell Harsens Island, MI

Answered by Paul Rosen on March 21, 2012

What alternative heating options are there for my home and husband's shop?

— Marvel Mickelson Detroit Lakes, MN

Answered by Harold Remlinger, AIA, LEED AP, NCARB on October 25, 2011

Does a solar water heater have an AFUE?

— Don Juan Santa Fe, NM

Answered by Rick Goyette on December 9, 2010

Are solar panels a viable replacement for propane heating?

— par Mountain View, CA

Answered by Lee Hall on August 29, 2010