A New Look At Vacuum Heating

HeatingHelp

A New Look At Vacuum Heating

Igor converts a steam heating system to a vacuum system in this unique retrofit.

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Long Beach Ed

Wonder what kid of pump he's using? A dental pump?

fentonc

Could you run like that but without the vacuum pump and replacing the water with an engineered fluid like 3M Novec 649? It normally has a boiling point of only 120F, so you could actually use it with an air to water heat pump even without drawing a vacuum.

JakeCK

I think this needs repeating, everyday: "I knew too much about steam heating. My mind was made up, and that's always a dangerous thing."

Andrews_Tech

Great article! Thank you!

FStephenMasek

Excellent article! How many buildings now have this system, and how has it performed since 2015?

jumper

Vacuum can improve performance even more dramatically in larger systems.

Decades ago some Toronto buildings used an eductor to generate vacuum. There may have been problems with other aspects but circulation was excellent.

Mad Dog_2

I did an interesting heating consultation  about 7 yrs ago on a High Rise Apartment overlooking MANHATTAN.  I was shocked to find that this building was constructed only 3 yrs before, so about 2012ish...VACUUM STEAM system.  There were no major problems and we tweaked it back to Top Form...Mad Dog 🐕