Skip to Content

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. 

Find help by category

Recent Articles

radiators
My Favorite Radiator Stories

So I’m visiting a wholesaler in an old town on Long Island where my Uncle Tony worked when he was still on this side of the lawn. You would have liked him. A homeowner wa...

Published on 08/03/2021 3:32 PM by Dan Holohan
Posted in The HVAC Business
problem
When Luck Fails You

Have you ever had one of those times when you’re trying to figure out some problem and then suddenly the solution comes to you as if by magic? Or is it just luck? And if ...

Published on 07/20/2021 2:51 PM by Dan Holohan
Posted in The HVAC Business
baseboard
Baseboard Adventures

So this fella comes up to me after a hot-water seminar and tells me about a problem he's having with this copper-fintube baseboard loop he installed in this big hall with...

Published on 07/07/2021 9:31 AM by Dan Holohan
Posted in Hot-Water Heating
The Subtlety of Steam Heating

You may think steam is just, well, steam. But there’s a lot more going on when it comes to steam heating a building. A bit of knowledge about the hot stuff will make you ...

Published on 06/14/2021 2:34 PM by Dan Holohan
Posted in Steam Heating
scale
Sludge, Scale and Bouncing Boilers

Clogging up heating surfaces is sort of like having all the traffic lights in your town turn red at the same time, and then stay red. Most movement just stops. In the cas...

Published on 05/19/2021 3:04 PM
Posted in Steam Heating
Radiators and Pandemics: A Curious Marriage

This video is a recording of Dan Holohan's popular seminar Radiators and Pandemics: A Curious Marriage. It was hosted by The General Society of Mechanics & Tradesmen on M...

Published on 05/17/2021 3:18 PM by Dan Holohan
Posted in Steam Heating
frugal tools
Frugal Tools

Who doesn’t like to talk about tools? I asked a bunch of my friends about the tools that live on in sweet memory as frugal tools — tools that were worth the investment. T...

Published on 05/12/2021 10:13 AM by Dan Holohan
Posted in The HVAC Business
clock
PROcrastination

We’re only human, and most humans like to put off things until they absolutely have to be done. I asked some heating professionals what they’ve been procrastinating about...

Published on 04/07/2021 3:41 PM by Dan Holohan
Posted in The HVAC Business
stock
What's Not In Stock?

I asked a bunch of heating contractor friends what was missing from their wholesaler’s stock and how they felt about that. They had some interesting things to say and I t...

Published on 03/30/2021 11:55 AM by Dan Holohan
Posted in The HVAC Business