Product Lines | Stay Comfy with High Efficiency Comfort Systems

Staying comfortable year round isn't hard when your heating and cooling systems are properly sized and installed. Call B.F. Mahn today to schedule your installation!

B.F. Mahn & Sons, Inc.starstarstarstarstar4.6 / 5

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26 Total Reviews /files//bf_mahn-logo.png636-586-2300$112 W Clement St., De Soto MO



Get Your new Comfort System today! Call B.F. Mahn & Sons Inc.



Premier High Efficiency Gas Water Heater

The State Premier High Efficiency Gas Water Heater provides the ideal blend of high efficiency and easy installation. This new design delivers 0.70 EF and is ENERGY STAR-qualified, with a first-hour rating that is much higher than a standard tank. The result is a product that delivers higher efficiency, simplifies installation and includes user-friendly features.

  • Fan assisted category 1 venting
  • 24v Electronic controls
  • Electronic hot suface ignition
  • LCD user interface
  • Powered anode rod
  • Green choice gas burner
  • Diffuser dip tube
MODELTypeCap. GallonsInput MBtuHUEFGas TypeRecovery GPH1st Hr Rating GPHDimensions HxWxDWeight Lbs.
GP640 YPCT 40 40.0 0.00 43.0 70.0 61-3/4x23-1/4x25 157
GP650 YPCT 50 40.0 0.00 43.0 81.0 60-5/8x25-1/4x27 171

Warranty Information

  • All Parts for 72 months - All parts and tank

Available Documents