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Product Information

45HI-NG

New 2017 Model update: This model has been redesigned to activate at a lower flow rate of .8 GPM as well as updated self-diagnostics.

Eccotemp 45HI-NG & 4" Horizontal Z-Vent Water Heater Vent Kit with Backflow

The Eccotemp 45HI-NG is the largest indoor model of the Eccotemp tankless line. Rated at impressive 6.8 GPM and 150,000 BTU per hour, the 45HI-NG 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 45HI-NG is powered by natural gas. With its fully automated control system, the Eccotemp 45HI-NG is the ideal choice for any standard sized home.

45HI Manual (English)

45HI Warranty

Product Features:

  • CSA certified for US and Canadian use
  • Hot water capacity range: .8 - 6.8 GPM
    • 5-degree rise: 6.8 GPM
    • 50-degree rise: 5.0 GPM
    • 70-degree rise: 3.4 GPM
  • Activation Flow .8 GPM
  • Natural Gas Powered
  • Digital display with simple controls and diagnostics
  • Energy Factor: 0.80
  • Energy rating: 82%
  • Maximum / Minimum gas rate: 19,800 - 150,000 BTUs
  • 3/4” Water Inlet & Outlet
  • 3/4” Gas Inlet
  • 4” Venting

Eccotemp 45HI-NG Dimensions:

  • Height 28"
  • Width 15"
  • Depth 7.5"
  • Weight approx. 38 lbs.
  • Shipping weight 39.7 lbs.

What’s included:

  • 110 volt UL listed power cord
  • 10-year warranty on heat exchanger
  • 5-year warranty on parts
  • T&P Relief Valve
  • Gas Shut Off Valve

IMPORTANT NOTE: Not recommended for elevation above 3000 ft and cannot be used for HYDRONIC SYTEM, RECIRCULATING, or FLOOR HEATING.

4" Horizontal Stainless Steel Z-Vent Wall Hung Water Heater Vent Kit with Back Flow Preventer

Kit Includes:

  • (1) Termination Hood
  • (1) 4" x 90 Degree Elbow
  • (1) 4" x 1' Pipe
  • (1) Wall Thimble
  • (1) 4" Universal Appliance Adapter with Back Flow Preventer

CSA 2714806

Class 2901 85

Class 2901 05

Class 2902 93

Class 2902 13

energy-guide-125x90.jpg

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.

Availability: Usually ships within 4 to 5 business days
Current Stock:
Condition: New
Width: 15.00
Height: 22.00
Depth: 6.00
GTIN: 00891876002676
MPN: 45HI-NGH
SKU: 45HI-NGH
Bulk Discounts: Buy 2 - 10 and get 10% off

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