“Bob Davis was recommended by a work colleague. I had a new installation that seemed to be using a lot more electricity than I expected. It turned out the controls had not been wired correctly. With his help, I was able to have the original installer make changes to the controls that reduced my bill without sacrificing comfort.” — R. B., N. Portland

“After having multiple local HVAC techs out with no long term fix, Bob helped us get to the root of the problem. The others had told us to just replace the whole system but Bob suggested the TXV might be the issue. We finally found a more experienced tech who installed a new TXV. Our house is finally comfortable in summer and Bob confirmed overall the efficiency has improved by 50 pct. — A. S., Atlanta

“I needed help with a whole house design. Bob reviewed bids I already had, took measurements at my house, and steered me to another contractor who did an outstanding job on my older house with challenging layout. I recommend him heartily.” — M. W., SE Portland

“Bob Davis was recommended by a good friend to assess the noise from our only three year old heat pump.  After a thorough examination, he suggested replacing a half dozen feet of our old sheet metal ducts in the crawl space with acoustic flex duct.  Worked like a miracle!  Can hardly hear it now.  Why didn't the original installers suggest this when we asked about the excessive noise, especially when in the auxiliary heat mode.  Bob's the guy!” —  L. E., NE Portland