Eccotemp 20H Outdoor 6.0 GPM Natural Gas Tankless Water Heater Service Kit Bundle

The Eccotemp 20H Outdoor Natural Gas Tankless Water Heater is one of the largest outdoor models of the Eccotemp tankless line. Rated at an impressive 6.0 gallons per minute (GPM) and 150,000 BTU per hour, the Eccotemp 20H-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 20H-NG is powered by natural gas. The Eccotemp 20H-NG is ready to install with its 110/120-volt UL listed power cord powering the internal exhaust fan and digital display. With its fully automated control system, the Eccotemp 20H-NG only pulls about .6 amps during operation, making it an ideal choice for any standard-sized home.

Product Features:

• Rated for 2-3 applications used simultaneously.
• Ideal for normal hot water heating applications in any size residential single-family home.
• Best in class 10-year product warranty.
• Complemented with our patented one of a kind EZ-Flush descaling kit.
• Rated at 6.0 GPM at 150,000 BTU with a temperature rise of 38 degrees.
• Ultra-efficient tankless water heater.
• Advanced incoming and outgoing water temperature sensor technology.
• CSA certified for installation in the US and Canada.
• Energy Factor Rating of .83.
• Advanced Generation 3 Computer board.
• Uses standard 3/4" NPT water and gas fittings.

What's Included:

• 20H Outdoor Natural Gas Tankless Water Heater
• Digital Remote Control Assembly Kit
• 110/120-Volt UL Listed Power Cord
• Gas Shut-Off Valve
• Instruction Manual
• Installation Hardware
• 10 Year Heat Exchanger/5 Year Parts Warranty
• Eccotemp EZ-Flush Descaler Kit
• Eccotemp 3/4" Service Valve Kit (Lead Free) by Jomar

Installation Clearances:

• Must be installed on a fire-retardant area.
• Must be away from all flammable materials.
• Clearance should be 1.75 ft to the left and right side of flammable materials, and 6.75 ft to the front.
• 2" clearance from wall
• 1' on both sides (left and right) from anything flammable
• 3' from any window, overhang, awning
• 18" from the ground

20H Product Info and Manual
20H Warranty

The Eccotemp 20H has been tested for use at elevations up to 2000 feet. Installation and use of the Eccotemp 20H above 2000 feet may affect overall product efficiency and performance. Installation and use of the Eccotemp 20H 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!

All Whole Home Water Heater purchases will be shipped with SIGNATURE REQUIRED. If you wish to remove SIGNATURE REQUIRED from your shipment please contact Customer Service immediately to have it removed. Please Note: By opting out of SIGNATURE REQUIRED you release Eccotemp Systems, LLC from all liability of lost or stolen packages. Call 1-866-356-1992 or chat with us here to speak with a customer service agent.


To ensure the secure and confirmed delivery of your purchase, Eccotemp requires a signature for all deliveries.