Teddy's Lucky Day
Jane had given Teddy the coupon on his way out the door that morning. He was looking at it as he waited his turn on the Burger King drive-through. “This is a good deal,” ...
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
Mixing Valves
HeatingHelp.com is partnering with Caleffi on the Hot Topics with Hot Rod webinar series. In this episode, Bob "Hot Rod" Rohr talks about how to size a mixing valve, when...
Wiring and Circuits
Wiring is so simple! Do you believe that? It can be.
Series Circuits
If you have one of each of the basic components of a circuit (power supply, switch and load), there’s only one way to wire them — connect all three together in a circle. ...
How to Use a Meter
Don’t fear the meter — it’s an essential tool. A multimeter is an essential tool for working with controls. It’s as expected for a professional heating guy to have a mete...
How Many Zone Valves Can Be Put on a Transformer?
Every component in a controls circuit is a power supply, a switch or a load — no other possibilities. And that means that every control, hydronic or otherwise, is one of ...
Electrical Grounding
Whether for safety or operation, knowing when to ground is essential. "Wha'd ya mean?" says Bubba the plumber-recently-turned-heating-tech. "How come you're tellin' me I ...
Everything You Need to Know About Relays
A relay is just a switch. The purpose of any switch is to turn something on and off. A relay turns HVAC equipment on or off.
Aquastat Relays - What's A Differential Anyway?
An aquastat relay is a combination of three controls. As its name suggests, it's an aquastat, a relay and a transformer. All three components are mounted together in what...
What Could Go Wrong?
We learned from the pandemic that education is available in many more places than just at live seminars. Webinars, for instance, are safer because you’re watching them al...