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33 certified models

Velocity Boiler Works commercial water heaters

Every Velocity Boiler Works water heater certified under ENERGY STAR and listed for the US market, fastest first. Each model page has the full certified specs and comparable machines from other makers.

ModelTypeFuelStorageInput rate
PHX1000CGas TanklessGas, Propane9 gal999 kBtu/h
PHX1000C-OGas TanklessGas, Propane9 gal999 kBtu/h
PHX1000VGas TanklessGas, Propane9 gal999 kBtu/h
PHX1000V-OGas TanklessGas, Propane9 gal999 kBtu/h
PHX1250CGas TanklessGas10 gal1,250 kBtu/h
PHX1250C-OGas TanklessGas10 gal1,250 kBtu/h
PHX1250VGas TanklessGas10 gal1,250 kBtu/h
PHX1250V-OGas TanklessGas10 gal1,250 kBtu/h
PHX1500CGas TanklessGas10 gal1,500 kBtu/h
PHX1500C-OGas TanklessGas10 gal1,500 kBtu/h
PHX1500VGas TanklessGas10 gal1,500 kBtu/h
PHX1500V-OGas TanklessGas10 gal1,500 kBtu/h
PHX400CGas TanklessGas, Propane4 gal399 kBtu/h
PHX400C-OGas TanklessGas, Propane4 gal399 kBtu/h
PHX400VGas TanklessGas, Propane4 gal399 kBtu/h
PHX400V-OGas TanklessGas, Propane4 gal399 kBtu/h
PHX500CGas TanklessGas, Propane5 gal500 kBtu/h
PHX500C-OGas TanklessGas, Propane5 gal500 kBtu/h
PHX500VGas TanklessGas, Propane5 gal500 kBtu/h
PHX500V-OGas TanklessGas, Propane5 gal500 kBtu/h
PHX650CGas TanklessGas, Propane6 gal650 kBtu/h
PHX650C-OGas TanklessGas, Propane6 gal650 kBtu/h
PHX650VGas TanklessGas, Propane6 gal650 kBtu/h
PHX650V-OGas TanklessGas, Propane6 gal650 kBtu/h
PHX800CGas TanklessGas, Propane7 gal800 kBtu/h
PHX800C-OGas TanklessGas, Propane7 gal800 kBtu/h
PHX800VGas TanklessGas, Propane7 gal800 kBtu/h
PHX800V-OGas TanklessGas, Propane7 gal800 kBtu/h
PHXW1000LGas TanklessGas, Propane9 gal999 kBtu/h
PHXW400Gas TanklessGas, Propane4 gal399 kBtu/h
PHXW500Gas TanklessGas, Propane5 gal500 kBtu/h
PHXW650Gas TanklessGas, Propane6 gal650 kBtu/h
PHXW800Gas TanklessGas, Propane7 gal800 kBtu/h

Source: ENERGY STAR certification data, US EPA. Data build 2026-09-29. Brand names are as the maker certified them, with obvious variant spellings merged.