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Product Information


This model has been redesigned to activate at a lower flow rate of .8 Gallons Per Minute as well as updated self diagnostics.

The Eccotemp 45H-LP Outdoor Liquid Propane Tankless Water Heater is the largest outdoor model of the Eccotemp tankless line. Rated at impressive 6.8 Gallons Per Minute and 150,000 BTU per hour, the 45H-LP can meet all the hot-water needs of a standard home or apartment with one or two bathrooms, as well as smaller commercial applications. The compact, wall mounted 45H-LP is powered by liquid propane. The fully automated control system allows the Eccotemp 45H-LP to be the ideal choice for any standard sized home.

45H Manual

45H Warranty


Up to 150,000 BTU, 110V power supply

Inlet Measurements:

3/4 inch water inlet & outlet, 3/4 inch gas inlet

Flow Rate:

  • 35 degree rise: 6.8 GPM
  • 50 degree rise: 5.0 GPM
  • 70 degree rise: 3.4 GPM

Additional Features

  • CSA certified for US and Canadian use
  • Hot water capacity range: .8 - 6.8 GPM
  • Activation Flow .8 GPM
  • Liquid Propane Powered
  • Digital remote with simple controls and diagnostics
  • 110 volt UL listed power cord
  • 150,000 BTU
  • Energy Factor: 0.80
  • 10 year warranty on heat exchanger
  • 5 year warranty on parts
  • Energy rating: 82%
  • Maximum / Minimum gas rate: 19,800 - 150,000 BTUs
  • Product dimensions & weight: 15"x5"x24" & 38lbs.

 IMPORTANT NOTE: Not recommended for elevation above 3,000 ft and cannot be used for HYDRONIC SYSTEM, RECIRCULATING or FLOOR HEATING.

Please Note: Failure to clean and descale your water heater quarterly can result in Lime and sediment build up within the heater, which can void your warranty! We recommend using our Eccotemp EZ-Flush System Descaler Kit to ensure a clean, energy efficient, long lasting heater!  Click here for details.

CSA 2714806

Class 2901 85

Class 2901 05

Class 2902 93

Class 2902 13


Availability: Usually ships within 4 to 5 business days
Current Stock:
Condition: New
Power Type Liquid Propane (LP) Applications Standard Home Applications Cabins Applications Apartment/Townhome Installation Outdoor Flow Rate 6.8 GPM Color White
Width: 15.00
Height: 26.25
Depth: 7.50
GTIN: 00891876002386
Bulk Discounts: Buy 2 - 10 and get 10% off

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