Direct Fired Water Heater

For all your hot water needs.


Direct Fired Water Heaters

Keystone Water Heater

Keystone Water Heater

Keystone Water Heater Icon

Keystone Condensing Water Heaters produce high volume hot water in with high energy efficiency.

  • Perfectly sized for large residential and light commercial applications.
  • Compact Footprint
  • Modulating with 5 to 1 Turndown
  • Advanced Cascade Capability
  • Building Automation System Interface
  • LP Conversion Kit
  • PVC, PP, and SS Venting up to 100′
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Product Comparison

Water Heater Model Fuel Input MBH Thermal Efficiency % Output MBH Turndown Ratio
KW 199 T Natural Propane 40 – 199 97 193 5 : 1
KW 285 T Natural Propane 57 – 285 95 271 5 : 1
KW 399 T Natural Propane 80 – 399 96 383 5 : 1
KW 500 T Natural Propane 100 – 500 96 480 5 : 1
KW 600 T Natural Propane 120 – 600 97 582 5 : 1
KW 750 T Natural Propane 150 – 750 94 705 5 : 1
KW 850 T Natural Propane 170 – 850 96 816 5 : 1
KW 1000 T Natural Propane 100 – 1,000 95 950 10 : 1
KW 1200 T Natural Propane 120 – 1,200 95 1140 10 : 1