Tag Archives: Solar Hot Water

PVThermal

Posted on March 27, 2010 by Mike Holm

PVThermal panels are not new.  There has been a lot of research done on them in Europe and the US since the 1970s, but they have been a niche market. Now is the time for the system to gain some prominence. … Continue reading →

Posted in Solar panels | Tagged , , , , | 2 Comments

Tankless water heater output

Posted on June 26, 2009 by Mike Holm

I am constantly finding companies (contractors, not manufacturers) who advertise that the tankless water heater they install will give you 7-8 gpm of hot water when heating from 10C to 50C (122F). Sorry, but this  should not be believed. The … Continue reading →

Posted in Tankless Water Heaters | Tagged , , , , | 2 Comments

Solar water heater economics

Posted on June 10, 2009 by Mike Holm

I have about 20 years in the solar business as well as installing high efficiency boilers and floor heating. In the 90s when there was cheap gas and oil, most people who were in the solar business were true believers, … Continue reading →

Posted in Efficiency and Economics | Tagged , , , , , , , , , , , , , | 1 Comment