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Eccotemp 6.0 GPM Indoor Natural Gas Tankless Water Heater


The Eccotemp Builder Series 6 GPM Indoor Natural Gas Tankless Water Heater (6GB-ING) is CSA approved and rated at an impressive 6 GPM with a temperature rise of 45 degrees. This tankless water heater is rated at 145,000 BTU and can produce unlimited hot water for 2-3 applications simultaneously. Eccotemp’s advanced 0.53 GPM low flow ignition technology allows users to enjoy endless hot water without experiencing cold spots.

We recommend the 6 GPM Indoor Natural Gas Tankless Water Heater (6GB-ING) for standard to smaller size single family homes, townhomes, condos, cabins, as well as smaller commercial applications and home builders. With our upgraded product control board performance and an all-new gas modulating valve, consumers can experience best in class temperature performance that is budget friendly.

The space saving wall mounted Eccotemp 6GB-ING has a 110/120-volt UL listed power cord that powers the internal exhaust fan, anti-Freeze protection and product control board. With its fully automated control system, the Eccotemp 6GB-ING pulls less than 0.34 amps during operation, making it ideal for low energy consumption and efficiency.

The Eccotemp 6GB-ING has been CSA tested and approved for US & Canadian use at elevations up to 2000 feet. Installation and use of the Eccotemp 6GB-ING above 2000 feet may affect overall product efficiency and performance.


  • Rated for 2-3 applications means enjoying on-demand hot showers for up to 2 bathrooms simultaneously
  • Rated at 6 GPM (gallons per minute) at 145,000 BTUs with a temperature rise of 45 degrees, this ultra-efficient Builder Series tankless hot water heater is ideal for just about every size single-family home, townhome, condo, cabin, apartment, or light commercial use 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
  • 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
  • The 6GB Builder Series is designed for indoor installation only and requires 3-inch venting. Make installation a breeze using the Eccotemp 3" Horizontal Vent Kit or 3” Vertical Vent Kit (purchased separately).
  • 10-Year limited manufacturer warranty (heat element: 10-years, Parts: five years), live chat, appointments for product support, and self-help guides will give you peace of mind that the Eccotemp 6GB-ING  will keep you in hot water for years
  • What's Included: Eccotemp 6 GPM Indoor Natural Gas Tankless Water Heater (6GB-ING), mounting hardware, gas appliance shut off valve, and product manual
  • The Eccotemp 6GB-ING 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
    • High Flow Rate
    • Metal Panel
    • LED Display
    • Affordable Comfort and Efficiency Indoors - Rated at 6.5 GPM (gallons per minute) at 170,000 BTUs, this ultra-efficient model can produce unlimited hot water for 3-4 applications simultaneously. Easily and safely install indoors with our 3” horizontal or vertical vent kits.Top Image Eccotemp Tankless Water Heater

    • Engineered to Perform - This space saving wall mounted model is designed with ¾” NPT connections, making it compatible with most standard size plumbing. Its internal structure features an exhaust fan, anti-freeze protection, and a fully automated control system.Middle Image Eccotemp Tankless Water Heater
    • Revolutionary Design - The LED digital display screen allows you to easily adjust and view output water temperature. Bright indicator lights show water flow, fan, and flame detection, along with advanced error code technology to quickly diagnose your water heater.Bottom Image Eccotemp Tankless Water Heater


    • Whole Home
    • Mid Size Home
    • Town Home
    • Apartment
    • Office
    • Tiny Home


    • Rated Flow Rate: 6.0 GPM
    • Installation: Indoor
    • Gas: Natural Gas
    • Amps: 0.34 Amps
    • Color: White
    • Material: Steel
    • Model: 6GB-ING
    • BTU: 18,000-145,000
    • Power Type: AC
    • Water Connection: 3/4" NPT
    • Gas Connection: 3/4" NPT
    • Temperature Range: 90°-140°F
    • Water Pressure: 15-108 PSI
    • Warranty: 10 Years
    • Certification: CSA
    • Freeze Protection: Included
    • EF: 0.81
    • Weight: 36.4 lbs
    • Product Dims: 23.9"x15.5"x7.3"
    • Packaging Dims: 31.1"x18.7"x10"

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