Eccotemp EL22i Indoor 6.8 GPM Liquid Propane Tankless Water Heater - Final Sale - 1779607472256_867

Eccotemp EL22i Indoor 6.8 GPM Liquid Propane Tankless Water Heater  - Final Sale - 1779607472256_867

This model predates 2021 and may exhibit minor cosmetic imperfections. Additionally, it may not include all accessories, such as hardware packs and manuals. Final sale items include original manufacturer warranty but are non-returnable. 

The Eccotemp EL22 Indoor liquid propane Tankless Water Heater is one of the most advanced CSA approved indoor models of the Eccotemp tankless line. Rated at an impressive 6.8 GPM with a temperature rise of 38 degrees and 140,000 BTU per hour, the Eccotemp EL22i-LP 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 EL22i-LP for standard size single family homes, apartments, condos, cabins, as well as smaller commercial applications. Using 2-3 hot water applications simultaneously is a breeze with the Eccotemp EL22i-LP. With our upgraded PCB (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 EL22i-LP has a 110/120-volt UL listed power cord that powers the internal Exhaust Fan, Anti-Freeze Protection, Digital Display and PCB. With its fully automated control system, the Eccotemp EL22i-LP only pulls about .67 amps during operation, making it an ideal for low energy consumption and efficiency.

The Eccotemp EL22i has been CSA tested and approved for US & Canadian use at elevations up to 2000 feet. Installation and use of the Eccotemp EL22i above 2000 feet may affect overall product efficiency and performance. Installation and use of the Eccotemp EL22i above 5000 feet is not recommended.

All purchases valued at $75 or above will be shipped with SIGNATURE REQUIRED. If you wish to remove the SIGNATURE REQUIRED please contact Customer Service. Please Note: By opting out of SIGNATURE REQUIRED, you release Eccotemp 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.

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 EL22i is ideal for normal hot water heating applications in ANY size residential single-family home, condo, cabin, apartment, 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
  
• Our easy and affordable 4” stainless steel horizontal and vertical vent kits make the Eccotemp EL22i Tankless Water Heater economical and affordable to install.
• What's Included: EL22i-LP tankless water heater, mounting hardware, gas appliance shut off valve and installation manual
• The Eccotemp EL22i 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 our Experts Think  

• Indoor high-capacity tankless system — The Eccotemp EL22i (1779607472256_867) is a 6.8 GPM liquid propane indoor tankless water heater designed for whole-home hot water demand in apartments, condos, and small to medium houses.
• Strong whole-home output performance — Rated up to ~6.8 GPM and ~140,000–150,000 BTU, it can comfortably support 2–3 simultaneous hot water uses (showers, sinks, appliances).
• Space-saving indoor wall-mounted design — Compact, modern unit with a sealed combustion system and integrated exhaust fan, eliminating the need for outdoor installation while saving floor space.
• Stable temperature control system — Built with digital controls, modulating gas valve, and sensor-based regulation to maintain consistent water temperature and reduce cold-water fluctuations.
• Efficient on-demand operation — Heats water only when needed, improving energy efficiency compared to traditional storage tank systems while delivering continuous hot water.
• Final sale value positioning — Sold as a clearance unit (may include cosmetic imperfections or missing accessories), but still tested for working condition with manufacturer warranty coverage.
• Best fit use case — Ideal for homeowners or installers seeking a budget-friendly indoor tankless upgrade for standard residential hot water demand rather than large-scale commercial loads.
• Key consideration — Requires correct venting, gas sizing, and professional installation; indoor tankless systems depend heavily on proper setup for safety and performance consistency

                 
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 buildup and maintain heating efficiency
• Clean the inlet water filter regularly to prevent low flow and ignition issues
• Check LP gas line and regulator connections for leaks, looseness, or corrosion before operation
• Ensure proper indoor venting is installed and kept clear for safe exhaust airflow
• Descale heat exchanger more frequently in hard water areas to avoid temperature fluctuations
• Keep electrical connections dry and ensure stable 110V power supply for control board operation
• Inspect temperature sensors and digital control panel for error codes and respond early
• Avoid running without proper water flow (minimum activation flow ~0.8 GPM)
• Shut off gas and water supply before performing any maintenance or service work
• Do not use for hydronic heating, floor heating, or recirculating systems
• Keep surrounding installation area clean, dry, and well-ventilated to prevent overheating or corrosion
• Schedule professional servicing annually to ensure safe combustion and long-term reliabilit