The Sta-Rite Max-E-Therm 400 HD (part number SR400HD) is a 400,000 BTU natural gas heater for large in-ground pools, spas and commercial installations. The heavy-duty version adds a cupro-nickel heat exchanger for salt water, high-use pools and aggressive water conditions.
Key Features
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400,000 BTU: Rapid heat-up for large pools and spas.
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Cupro-nickel heat exchanger: Superior corrosion resistance for salt water and chemical-rich environments.
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Composite housing: Lightweight, rustproof exterior that resists heat, corrosion and UV exposure.
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Digital controls: LED display with temperature settings, diagnostics and service alerts.
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Dual voltage: Works with 120V or 240V electrical setups.
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Compact and quiet: Space-saving footprint with a low-noise combustion system.
Specifications
| Brand |
Sta-Rite |
| Part Number |
SR400HD |
| Product Line |
Max-E-Therm |
| BTU |
400,000 |
| Fuel Type |
Natural Gas |
| Voltage |
120/240V AC, 60 Hz |
| Heat Exchanger |
Cupro-nickel (heavy duty) |
| Ignition |
Electronic |
| Weight |
127 lbs |
Before You Order
Confirm your gas supply is natural gas and that venting, clearances and gas line sizing meet local codes. Gas, plumbing and electrical connections should be made by a licensed professional. Questions? Call 855-677-7796 or contact us with your model and part number.
Shipping Box Dimensions
27.75 x 34.25 x 32 in
Dimensions refer to the shipping carton.
