Air Expansion Tank (2.1 Gal) Universal



Calefactio Branded accepts expanded water as system temperature rises to reduce pressure build up. This unit contains a water tight reservoir for expanded water. Sealed air cushion – factory pre-charged and 100% tested. For use with closed hydronic heating and cooling systems.

  • Tank volume 2 gal.
  • 5 year limited warranty
  • Deep draw steel tank
  • Pre-charged to 12 psig
  • Maximum working pressure 100 psi


Assembled Depth (in.) 7.5 in Product Depth (in.) 7.5
Assembled Height (in.) 12.75 in Product Height (in.) 12.75
Assembled Width (in.) 7.5 in Product Width (in.) 7.5
Annual Fuel Utilization Efficiency (AFUE) (%) 0 Fuel Gauge No
Capacity (gallons) 2.1 Fuel type Natural Gas
Color Teal Heat rating (BTU/hour) 0
Color Family Teal Heating Product Type Boiler
Condensing/noncondensing Noncondensing Heating Technology Type Radiant
Energy Consumption (kWh/year) 0 Ignition Type Electrical
Finish Paint Product Weight (lb.) 4.0 lb
Finish Family Red Returnable 90-Day
Certifications and Listings No Certifications or Listings Manufacturer Warranty 5 year limited warranty
ENERGY STAR Certified No