6.8 GPM Outdoor Natural Gas Tankless Water Heater, 45 Series

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Expected to ship Aug 30th 2023*

Product Description:

The Eccotemp 45 Series 6.8 GPM Tankless Water Heater is one of the most advanced CSA approved models of the Eccotemp tankless line. Indoor and outdoor models available in both natural gas and liquid propane. Rated at an impressive 6.8 GPM with a temperature rise of 38 degrees and 140,000 BTU per hour, the Eccotemp 45 Series can meet all your hot water needs! Eccotemp’s advanced 0.7 GPM low flow ignition technology allows users to enjoy endless hot water without experiencing cold spots.

We recommend the Eccotemp 45 Series for standard size single family homes, townhomes, condos, cabins, as well as smaller commercial applications. Using 2-3 hot water applications simultaneously is a breeze with the Eccotemp 45 Series. With our upgraded Product Control Board performance and an all new gas modulating valve, consumers can experience best in class temperature performance with a price anyone can afford.

The compact, wall mounted Eccotemp 45 Series has a 110/120-volt UL listed power cord that powers the internal Exhaust Fan, Anti-Freeze Protection, Digital Display and Product Control Board. With its fully automated control system, this model only pulls about .67 amps during operation, making it an ideal for low energy consumption and efficiency.

The Eccotemp 45 Series has been CSA tested and approved for US & Canadian use at elevations up to 2000 feet. Installation and use of the Eccotemp 45 Series above 2000 feet may affect overall product efficiency and performance. Installation and use of the Eccotemp 45 Series above 5000 feet is not recommended.

  • Rated for 2-3 applications used simultaneously means that taking a shower and running two sinks at the same time is effortless. Ideal for normal hot water heating applications in ANY size residential single-family home, townhome, condo, cabin, or Light commercial use
  • Rated at 6.8 GPM at 140,000 BTUs 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
  • 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 .83
  • Advanced Generation 3 Computer board with high performance processing and smart adjust technology built in. Our proprietary developed programming meets and exceeds today’s consumer demands
  • With advanced incoming and outgoing water temperature sensor technology, you always have total confidence when it comes to safety
  • Best in class 10-year product warranty, live chat, appointments for product support, self-help guides will give you peace of mind that the Eccotemp 45 Series will keep you in hot water for years
  • 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

Product Features

  • Energy Efficient

  • Easy Install

  • Metal Panel

  • High Flow Rate

  • Remote

Smart Voice Commands

Designed with a smarter home in mind

”Ok Google, change my water heater to 110 degrees.”

Connects seamlessly with Google and Alexa

”Alexa, change my water heater to Comfort Mode.”

  • Ultra-Efficiency and Affordable Comfort

    The Eccotemp 45H Outdoor Tankless Water Heater features an exhaust that is designed to save you money. With no venting required, you will find this to be a quick and easy install.

  • Revolutionary Design

    The Eccotemp 45H Tankless Water heater is equipped with an advanced burner rated at 140,000 BTUs, making it perfect for providing the best temperature rise and range.

    This powerful burner will help deliver hot water for years. Rest easy knowing you don’t have to do any of the hard work.

  • Engineered to Perform

    The Eccotemp 45H Outdoor Tankless Water Heater features 3/4” NPT incoming and outgoing water connections. Designed for compatibility with most standard size plumbing makes installing the 45H easy, straightforward and affordable.


  • Whole Home

  • Mid Size Home

  • Town Home

  • Apartment/Condos

  • Office

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  • Rated Flow Rate

    6.8 GPM

  • Installation


  • Gas

    Natural Gas

  • Amps

    0.67 Amps

  • Color


  • Material


  • Model


  • BTU

    25,000 - 140,000

  • Power Type


  • Water Connection

    3/4" NPT

  • Gas Connection

    3/4" NPT

  • Temperature Range


  • Water Pressure

    50-80 PSI

  • Warranty

    5 Years

  • Certification


  • Freeze Protection


  • EF


  • Weight

    36.4 lbs

  • Product Dims


  • Packaging Dims


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