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Pentair

Pentair ETi 250 High Efficiency Gas Heater

Pentair ETi 250 High Efficiency Gas Heater

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The ETi 250 drops to a 250,000 BTU rating in a smaller 25x25x32 in footprint than its ETi 400 sibling, while holding a 94% thermal efficiency on natural gas (96% on propane with the conversion kit). It's built as a drop-in replacement for existing MasterTemp or Max-E-Therm units, sharing the same plumbing layout so a swap doesn't require re-piping the pad. High-altitude installs above 2,000 ft need kit 462057.

  • 250,000 BTU output at 94% thermal efficiency (NG) / 96% (propane with conversion kit)
  • Drop-in replacement for MasterTemp/Max-E-Therm — same plumbing layout
  • Titan-Tough Direct-Fire titanium heat exchanger
  • Propane conversion kit 476370 (0-2,000 ft); high-altitude kit 462057 (2,000-10,000 ft)
  • ASME certified
  • 3-year parts and labor warranty
Model ETi 250
MPN 461112 (NG)
BTU output 250,000
Thermal efficiency 94% (NG) / 96% (propane, with conversion kit)
Dimensions 25 in L x 25 in W x 32 in H
Weight 270 lb
Electrical 120V/240V, 60Hz, 1-phase, 15A breaker
Fuel/altitude kits Propane kit 476370 (0-2,000 ft); high-altitude kit 462057 (2,000-10,000 ft)
Heat exchanger Titan-Tough Direct-Fire Titanium
Certifications ASME certified
Warranty 3 years parts and labor
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