• Save space : the combination (COMBI) models provide both your home heating, and your domestic hot water needs in one compact, super-efficient on-demand appliance. Our range of models provide 2.5 – 5 gallons per minute of domestic hot water.
  • 93.5 MBH – 205 MBH
  • 6.9:1 Turndown Modulation Ratio in DHW Mode (115)
  • 7:1 Turndown Modulation Ratio in DHW Mode (150/205)
  • 5.6:1 Turndown Modulation Ratio in Heating Mode (100/115)
  • 5.7:1 Turndown Modulation Ratio in Heating Mode (125/150)
  • 5.5:1 Turndown Modulation Ratio in Heating Mode (165/205)
  • Flow Rate in DHW Mode @ 70° F rise – 2.5 GPM (MACF-115), 3.5 GPM (MACF-150), 5.0 GPM (MACF-205).
  • Heat Exchanger: Iron Chromium Stainless Steel Heat Exchanger and Burner. MACF-115/150/205 is also equipped with a Stainless Steel Brazed Plate Heat Exchanger.
  • Additional Features: Assembled Boiler With Jacket, Induced Draft Fan, High Limit Sensors, 30 psi Relief Valve, Low Water Pressure Switch and Temperature/Pressure Gauge.
  • Build-In Load Matching Pump contributes to savings in electrical usage.

  • Outdoor Temperature Sensor, Indirect Tank Sensor and, Floor Stand Kit
  • Our AI control technology is programmed to recognize an Indirect Tank. H2O Indirect Hot Water Heaters are available in 30-to-115-gallon capacities and feature 316L stainless steel construction and top connections for an easy installation

(See Installation, Operation and Maintenance Manual for complete instructions)