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recommendation for an indirect water tank

lost11 Member Posts: 37
i need to replace my 40g indirect water tank. anyone have any recommendations? i'm thinking something around the same capacity, or a little more wouldn't hurt.

my current one had all 4 connectors on top, but i guess that wouldn't be an issue a plumber to redo the connections. i'm in NYC if that matters.

i have a 93,000k btu boiler.


  • Zman
    Zman Member Posts: 7,588
    Any indirect rated over 93k will maximize your boiler. Aside from some of the Amtrol models most 40 gallon models will e rated higher.
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • JohnNY
    JohnNY Member Posts: 3,244
    Don't oversize it. How many people are drawing hot water from it? Are there hi capacity fixtures in the house? Keep in mind that a standard 40-gallon gas-fired water heater typically uses a 40,000 BTU burner and fires at about 70% efficiency. Your 93,000 BTU boiler will put much more energy into the water and probably runs at least 80% efficiency or higher. I'm willing to bet you need not purchase a larger tank.
    Contact John "JohnNY" Cataneo, NYC Master Plumber, Lic 1784
    Consulting & Troubleshooting
    Heating in NYC or NJ.
  • Henry
    Henry Member Posts: 998
    HTP SSP50 will do the job. The heat exchanger and tank is made of S/S