Eccotemp Scratch & Dent - Eccotemp i12 Indoor 4.0 GPM Natural Gas Tankless Water Heater - 1779607485683_359

Eccotemp Scratch & Dent - Eccotemp i12 Indoor 4.0 GPM Natural Gas Tankless Water Heater - 1779607485683_359

The Eccotemp i12-NG has a new revolutionary design, making it unlike any other tankless water heater on the market today. This model features sleek black tempered glass paneling, fully automatic temperature controls for precision, and a touch screen with an LED temperature display that shows output temperature and GPM flow. Rated at an impressive 4 GPM, the Eccotemp i12-NG Tankless Water Heater is a natural gas fired, indoor model designed for small to medium hot water production where you need more than one hot water application at the same time. The Eccotemp i12-NG is perfect for vacation cabins, cottages and smaller homes.

The i12-NG comes with a horizontal stainless steel vent kit, ready to install and with its 120 volt UL listed power cord powering the internal exhaust fan and digital display.  It only pulls about 2 watts idol and 1.07 Amps during operation, making it an ideal energy efficient appliance.

The i12-NG offers a 35-40 degree F temperature rise when operating at flow rate of 4 gallons per minute and a 77 degree F temperature rise at 1.5 gallons per minute.

 Features

• True 1/2" NPT water fittings
• Tempered glass back panel
• Child locking technology
• Fully automatic temperature controls
• Natural Gas Powered
• Sleek modern design
• 4 GPM flow capacity
• Field tested to 5500 ft. elevation (not recommended to be used any higher)
• Power ventilation for safety and efficiency
• Tested-Safe Electronic Ignition System
• 80,000 BTU
• LED temperature display
• Weighs only 33 pounds
• Unit Dimensions are 15”x24”x4”
• Stainless vent kit included
• Uses gas only when hot water is on
• Requires standard household 120 volt electric outlet
• UL listed electrical components
  
• Hot water capacity range: 0.6 - 4.8 GPM
• Maximum / Minimum gas rate: 25,000 - 80,000 BTUs

What our Experts Think  

• Budget-friendly indoor tankless solution — The Eccotemp i12 Indoor 4.0 GPM Natural Gas (1779607485683_359) Scratch & Dent model is designed for small to medium homes, cabins, and cottages, delivering on-demand hot water at a lower entry cost due to cosmetic-grade refurbishment.
• Solid 4.0 GPM performance for light households — Supports multiple low-to-moderate hot water uses at once (e.g., shower + sink), making it suitable for compact residential setups rather than high-demand family homes.
• Modern indoor design with smart controls — Features a tempered glass front, LED touchscreen display, and fully automatic temperature control for precise, user-friendly operation.
• Efficient natural gas operation — 80,000 BTU burner with on-demand ignition ensures gas is only used when hot water is needed, improving overall energy efficiency.
• Includes venting kit for easier install — Comes with a horizontal stainless steel vent system and 120V power for the exhaust fan and digital controls, simplifying indoor installation requirements.
• Scratch & Dent value advantage — Typically sold at a reduced price with possible cosmetic imperfections while still tested for working condition and backed by warranty coverage.
• Best for cost-conscious homeowners — Ideal for budget upgrades, rental properties, or secondary homes where reliable hot water matters more than premium finishes or advanced smart-home integration.
• Key consideration — Performance is highly dependent on correct gas sizing, water flow, and vent installation; like most tankless units, proper setup is critical for stable operation.

                 
Q&A    

Q: What is the Eccotemp EL22i Indoor LP tankless water heater?
A: It is the EL22i indoor liquid propane (LP) tankless water heater, designed to provide on-demand hot water for small to medium homes, delivering up to 6.8 GPM with strong whole-home performance.

Q: What does “Final Sale” mean?
A: “Final Sale” means the unit is non-returnable and non-refundable, but it is still covered by a manufacturer warranty. These units may also include minor cosmetic defects or missing accessories.

Q: What is the hot water capacity?
A: It supports up to 6.8 GPM flow rate, allowing 2–3 simultaneous water uses (e.g., showers + sinks) depending on conditions.

Q: What fuel does it use?
A: This model runs on liquid propane (LP) and is designed for residential indoor installation.

Q: What is the heating power (BTU)?
A: It operates up to around 140,000–150,000 BTU, enabling fast heating and consistent hot water output.

Q: What type of homes is it best for?
A: It is suitable for single-family homes, apartments, condos, cabins, and light commercial use, especially where space-saving indoor installation is needed.

Q: Does it require venting?
A: Yes. As an indoor unit, it requires a proper 4-inch stainless steel venting system (horizontal or vertical depending on setup).

Q: Does it need electricity?
A: Yes. It uses a 110/120V power connection for controls, ignition, fan, and safety systems.

               
Maintenance Tips

• Flush the unit every 6–12 months to remove scale and maintain heating efficiency
• Clean the inlet water filter regularly to prevent flow restriction and ignition issues
• Inspect gas line connections for leaks, corrosion, or looseness before operation
• Ensure proper indoor venting system is clear and unobstructed for safe exhaust flow
• Descale heat exchanger more frequently in hard water areas to prevent temperature instability
• Keep electrical connections dry and ensure stable 120V power supply for control system and fan
• Check temperature sensors and digital display for error codes and address issues early
• Do not operate without proper water flow (minimum activation flow required for ignition)
• Shut off gas and water supply before performing any maintenance or service work
• Keep installation area clean, dry, and well-ventilated to avoid overheating or corrosion
• Avoid using for hydronic heating, floor heating, or recirculating systems
• For scratch & dent units, periodically inspect casing and fittings for hidden damage or previous impact wear