by Dave Yates | Sep 11, 2019 | pmmag.com Articles
Two 2.5-ton air-to-water heat pumps were installed with each one connected to a 50-gallon indirect water heater. Both systems incorporated solar heat exchangers and there was a vacuum tube solar array mounted on the roof to, according to the installer, provide 100% of...
by Dave Yates | Aug 13, 2019 | pmmag.com Articles
Success doesn’t happen by accident. After being contacted by the general contractor, we met on site to go over the possibility of installing a snowmelt system for the more than 2,000-square-feet of sidewalks, which also included two ADA-sloped approaches to the grand...
by Dave Yates | Jul 12, 2019 | pmmag.com Articles
Crunch the numbers and have documented proof, then no one can argue. An architect, insulation installers, door and window salespersons/installers, and a mechanical contractor are in a classroom together, and the instructor asks: “Should you upgrade the building...
by Dave Yates | Jun 12, 2019 | pmmag.com Articles
Ask Dave, he’ll know.” I had just walked into the inside sales area to give our salesman a list to quote. A friendly competitor was looking for answers and one of the salesmen told him to ask me for my thoughts. He had recently installed a new boiler with five zones...
by Dave Yates | Nov 30, 2015 | Videos
An outdated floor-standing heating system makes way for Navien’s new high-tech wall-hung condensing modulating boiler, the NHB, in a video shot during a recent Pennsylvania retrofit. Featuring a most efficient turndown ratio of 15:1, installer Dave...