Lochinvar SQUIRE SIT040 40-Gallon Indirect Water Heater
Model SIT040
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Price as of May 2026
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Fuel Type
Indirect
Tank Type
Indirect
Energy Factor
0.85
Warranty Years
10
Capacity Gallons
40
First Hour Delivery
180
Lochinvar SQUIRE SIT040 40-Gallon Indirect Water Heater Review
The Lochinvar SQUIRE SIT040 is a 40-gallon indirect water heater. Smallest in Lochinvar's SQUIRE indirect line. Designed to pair with hydronic boilers for residential DHW.
Specs: 40 gallons stored, stainless steel internal coil heat exchanger, polyurethane foam insulation. Compatible with Lochinvar boilers and most US residential boilers. 10-year tank warranty.
The 40-gallon SQUIRE serves 2-3 person households with hydronic boiler installations. Lochinvar engineering: robust internal coil, better insulation than mass-market alternatives, longer warranty.
About $1,400 unit, $2,400-$3,000 installed depending on boiler integration. Right buyer: home with existing or new Lochinvar boiler wanting indirect DHW at 2-3 person capacity.
Full Specifications
Brand
Lochinvar
Model Number
SIT040
Fuel Type
Indirect
Tank Type
Indirect
Energy Factor
0.85
Warranty Years
10
Capacity Gallons
40
First Hour Delivery
180
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