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Systems Help Center

Our comprehensive HVAC Systems Help Center covers a wide range of HVAC-related topics, including air conditioning and heat pumps, geothermal, hot-water heating, thermostats and controls, solar, steam heating, and warm air. We also have a section of informative and entertaining articles to help you sharpen your HVAC business skills. And our Heating Museum is a captivating journey through the evolution of HVAC technologies. 

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Recent Articles

A Circulator Is Not A Pump

A bicycle pump is a pump. So is an oil pump on an oil burner. When those machines start, you expect to get a pressure on the outlet side of the pump that’s greater than t...

Published on 07/29/2019 11:44 AM by Dan Holohan
Posted in Hot-Water Heating
control tree
Is The Safety Valve Actually Bad?

“Our safety valves keep popping. We’ve had a contractor replace them, but they keep going bad.” It was late on a Friday afternoon and the boiler operator was angry. “We n...

Published on 06/13/2019 7:10 PM
Posted in Steam Heating
G.M. Davis Air Valve Patent (1889)

On June 11, 1889, the G.M. Davis Regulator Company of Chicago, Illinois patented the Victor No. 2, an automatic air vent for steam radiators. It worked by the expansion o...

Published on 06/05/2019 4:16 PM
Posted in Heating Museum
screwdriver
Crank It Down?

In 1989, when we started our business The Lovely Marianne asked me what I was going to do to make money for her and our four daughters. I told her I was going to write bo...

Published on 04/15/2019 1:11 PM
Posted in Steam Heating
list
It's Not Easy Being You

A question asked on The Wall at HeatingHelp.com caught my attention and had me thinking of you. Here ‘tis: When you are doing a job, how do you find the best prices for p...

Published on 04/15/2019 1:10 PM by Dan Holohan
Posted in The HVAC Business
on phone
Phone Choices

I’m concerned about what our phones are doing to the way we think and the way we work. I was having lunch with three industry friends and we talked about how it was back ...

Published on 03/26/2019 9:44 AM by Dan Holohan
Posted in The HVAC Business