Diverter-Tee Q&A
Q: What's the principle of the diverter-tee system? A: This system lets you supply hot water to a radiator and return cooler water from the same radiator by using a singl...
Hot-Water Heating Help Topics
This section is your guide to hot-water heating systems with information about system design and piping, air elimination, pumping away, primary-secondary pumping, valves, radiators, troubleshooting tips, and more.
Hot-Water Heating Categories
Air Elimination
Antifreeze
Boilers
Case Study
Circulators
Combustion
Commercial Heating
Corrosion
Domestic Hot Water
Gravity Hot-Water Systems
Heat Exchangers
Heating System Conversion
Indirect Heating Systems
Indoor Air Quality
Loop Systems
Piping and Pumps
Primary-Secondary Pumping
Pumping Away Piping
Radiant Heating
Radiators
Seminars
Snowmelt Systems
System Pressure
Tanks
Tees
Thermostatic Radiator Valves
Troubleshooting
Valves
Venting
Water Quality
Zoning
Recent Articles in Hot-Water Heating
Converting From Steam to Hot-Water Heat?
First things first. Before the 1920s, most steam contractors used cast-iron, column-type radiators. Those are the free-standing ones with the real wide sections.
How to Run a Hot-Water Zone Off a Steam Boiler
Q: Is it possible for me to use the condensate in a steam boiler to make a hot water zone? A: Sure! Heating professionals have been doing this for years in areas such as ...
Why Some Compression Tanks Fail
Packaged boilers have been popular for a very long time and they sure do make a contractor’s life easier. These days, most packaged boilers come with a circulator in the ...
Some Gravity-Hot-Water Systems Didn't Have Compression Tanks
It all started when a friend called to tell me about this old gravity hot-water system that had him baffled. “There’s no expansion tank anywhere on this job,” he said. “Y...
Gas-Pipe Sizing Chart
This helpful chart will show you the maximum delivery capacity of cubic feet of gas per hour of IPS pipe carrying natural gas of 0.60 specific gravity based on a pressure...
Using Vacuum Gauges to Tune an Oil Burner
Vacuum Gauges Paint a Picture for You By painting a picture I simply mean that when you use this instrument it will reveal some much needed information when diagnosing a ...
Why You Should Never Dead-Head a Circulator
When I was still young and very wet behind the ears I worked for a manufacturers representative in New York City and we sold Bell & Gossett pumps to wholesalers. It was m...
The Point of No Pressure Change
In 1994, I wrote a book called, Pumping Away, which I began by remembering the late, great Gil Carlson. Here's what I wrote: When I knew Gil Carlson, he was never far fro...
The Hidden Costs of Hidden Pumps
If you're watching the news you probably realize that, these days, Americans are becoming more conscious of green things, as well as rising fuel prices. I think that's go...