Eccotemp 45HI Indoor 6.8 GPM Natural Gas Tankless Water Heater Horizontal Bundle

  • $659.00
    Unit price per 


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This model has been redesigned to activate at a lower flow rate of 0.8 GPM as well as updated self diagnostics.

The Eccotemp 45HI-NG Indoor Natural Gas Tankless Water Heater is the largest indoor model of the Eccotemp tankless line. Rated at an impressive 6.8 Gallons Per Minute and 140,000 BTU per hour, the Eccotemp 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 Eccotemp 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.

Product Features:

  • Rated for 2-3 applications used simultaneously means that taking a shower and running two sinks at the same time is effortless. The Eccotemp 45 Series is ideal for normal hot water heating applications in ANY size residential single-family home.
  • Rated at 6.8 GPM at 140,000 BTU with a temperature rise of 38 degrees this ultra-efficient tankless water heater is ideal for just about every single-family home in the US and Canada. With Advanced incoming and outgoing water temperature sensor technology, you always have total confidence when it comes to safety. With a minimum activation rate at .8 GPM means this tankless water heater is perfect for most low flow applications.
  • CSA certified for installation in the US and Canada. This tankless water heater meets and exceeds all safety and efficiency requirements according to the DOE. With an Energy Factor Rating of .82, you can have peace of mind knowing this tankless water heater is ideal for individuals looking to save money.
  • Advanced Generation 2 Computer board with high performance processing and smart adjust technology built in. Our proprietary developed programming meets and exceeds today’s consumer demand needs. Easy, affordable 4” stainless steel venting makes the Eccotemp 45 Series tankless water heater economical and affordable to install.
  • Best in class 10-year product warranty offers peace of mind that the Eccotemp 45 Series will withstand the time and use you need. The Eccotemp 45 Series can be complemented with our patented one of a kind EZ-Flush descaling kit to ensure your tankless water heater is running at maximum efficiency all year long.


What's Included:

  • 45HI Indoor Natural Gas Tankless Water Heater
  • Gas Shut-Off Valve
  • Instruction Manual
  • Installation Hardware
  • 10 Year Heat Exchanger/5 Year Parts Warranty

The Eccotemp 45HI has been tested for use at elevations up to 2000 feet. Installation and use of the Eccotemp 45HI above 2000 feet may effect overall product efficiency and performance. Installation and use of the Eccotemp 45HI above 5000 feet is not recommended.

IMPORTANT NOTE: Cannot be used for HYDRONIC SYSTEMS, 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!