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Heat-flo Indirect Water Heaters

Energy Saving Stainless Steel Indirect Water Heater

Heat-flo’s high efficiency indirect water heaters are made with quality stainless steel materials that provide excellent heat transfer and a longer tank life, as well as abundant hot water and low operating costs. Indirect water heaters work in conjunction with a boiler to heat the water that's circulated through the heat exchanger in the tank.

When paired with an high efficiency boiler, Heat-flo’s indirect water heaters can generate over 50% more hot water than many water heaters of similar size.

Quality Design and Construction
  • CTanks and coils are all stainless steel construction.
  • Large, smooth-wall coils deliver full output for years - no finned tubing to collect lime and sediment.
  • Over 2" of insulation, providing less than 1° / hr. heat loss.
Easy Installation
  • All connections are on top on the standard units for a neat, quick, and clean installation.
  • Brass drain and relief valves are factory installed.
  • Honeywell L4080B Aquastat control is standard.
Residential and Commercial
  • Models are available in 30, 40, 50, 60, 80, and 115 gallon sizes.
  • Bank together 80 and 115 gallon units for applications with high water heating demands.
  • Limited warranty residential installation, 5 year commercial.

PDF Documents:
Heat-flo Indirect Specifications | Heat-flo Indirect Submittal Data | Heat-flo Indirect Installation Manual | Heat-flo Indirect Warranty Info

Due to oversize shipping and fuel surcharges, our shipping calculations may need to be adjusted after you order.

Call 866-361-4782 if you require a more accurate shipping quote.


Volume 30 Standard Indirect Water Heater

Part No: HF-30

$1617.03 each

Volume 40 Standard Indirect Water Heater

Part No: HF-40

$1728.93 each

Volume 50 Standard Indirect Water Heater

Part No: HF-50

$2087.09 each

Volume 60 Standard Indirect Water Heater

Part No: HF-60

$2445.25 each

Volume 80 Standard Indirect Water Heater

Part No: HF-80

$2765.73 each

Volume 115 Standard Indirect Water Heater

Part No: HF-115

$3760.27 each


Part No: HF-40 LOW

$1842.02 each


Part No: HF-60 LOW

$2516.61 each


Toll Free: (866) 361-4782

Fax: 206-274-1501

17420 Vashon Hwy SW
PO Box 2270
Vashon, WA 98070

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