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.starstarstarstarstar4.7 / 5

5 stars
27
4 stars
0
3 stars
0
2 stars
0
1 stars
0

29 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.



Non-Condensing Exterior Tankless Water Heaters

Fully modulating' gas fired' tankless water heater. Supplies hot water to domestic hot water systems (directly or indirectly) can be used with water storage tanks' recirculation systems' hydronic heating systems' radiant floor heating systems' and/or combined domestic & heating applications.

  • Copper heat exchanger is commercial grade which is stronger than standard copper and more resilient against erosion.
  • Remote control included as standard
  • Built in freeze protection
  • Inlet and Outlet Thermistors for Constant Temperature Monitoring
  • Space saving exterior mounting
MODELConfigurationMax
MBtuH
Min
MBtuH
Flow Rate
GPM
UEFTemp.
Range
Dimensions
HxWxD
Weight
Lbs.
GTS-110-NEOutdoor 140.0 19.5 6.60 0.82 20.25x13.75x7.75 33
GTS-310-NEOutdoor 190.0 11.0 8.00 0.82 20.25x13.75x9.5 38
GTS-510-NEOutdoor 199.0 11.0 10.00 0.82 20.25x13.75x7.75 39
GTS-110U-NEOutdoor 140.0 15.0 6.60 0.82 20.5x13.8x8.5 37
GTS-310U-NEOutdoor 190.0 15.0 8.00 0.82 20.5x13.8x8.5 37
GTS-510U-NEOutdoor 199.0 15.0 10.00 0.82 20.5x13.8x8.5 39

Warranty Information

  • All Parts for 60 months -
  • Heat Exchanger for 180 months -

Available Documents