Foaming and Priming in Steam Boilers
Dry steam is steam with very little liquid water in it. For heating systems, the goal has always been to have 98%-quality steam leaving the boiler. This means that there'...
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
Dissimilar-Metals and Electrolysis Corrosion
I asked this question on The Wall: When do you think you need to protect against electrolysis corrosion from stray electrical current, and corrosion caused by dissimilar ...
The Lure of Online Suppliers
The question came up on The Wall at HeatingHelp.com about why some contractors buy some or most of their stuff from online suppliers these days. This led to a conversatio...
What Makes for a Good Heating Website
In 1997, with lots of help from some very smart people, I launched what became HeatingHelp.com. Amazon.com was two years old that year. I was buying books from them.
Building a Dream, Not a Frankenstein
Here's an excerpt from Al Levi's The 7-Power Contractor: Run Your Contracting Business with Less Stress and More Success. IS THERE A SHORTAGE of information out there on ...
How to Become a Better Troubleshooter
Avoid "Auto" Conclusions Don't try to solve the problem while you’re still in your truck. Some technicians make up their minds before looking around, and then they set ou...
How to Fix a Leaky Cast-iron Radiator
J-B Weld Company of Sulfur Springs, TX (903-885-7696) told me that the City of Dallas, Texas used their product to repair a cracked Caterpillar engine block. That sure go...
Air in a Hot-Water Heating System
Air is the enemy in a hydronic (hot-water) heating system. It blocks the flow to the radiators. It rattles around and annoys customers.
Watch the Tailpipe
Start your car on a cold morning and walk around to the tailpipe. See that water dripping? That’s the way a high-efficiency, condensing boiler works.
Grocery Store Radiant
The grocery store is a great place to understand radiant heating (or to explain it to your customer). Stop first in the gadget aisle and pick up a thermometer. It will pr...