Eccotemp Scratch & Dent - Builder Series 6.0 GPM Indoor Natural Gas Tankless Water Heater - 1779607514987_678

Eccotemp Scratch & Dent - Builder Series 6.0 GPM Indoor Natural Gas Tankless Water Heater - 1779607514987_678

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.

IMPORTANT NOTE: Cannot be used for HYDRONIC SYSTEMS, RECIRCULATING, or FLOOR HEATING.

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 to speak with a customer service agent.

Features                    

• 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).
• Limited Manufacturer Warranty (Heat Exchanger: 10 Years, Components: 5 Years, Parts/Accessories: 30 Days), live chat, and self-help guides provide peace of mind, assuring 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

What our Experts Think

• Refurbished “Scratch & Dent” indoor tankless system — The Eccotemp Builder Series 6.0 GPM (Model 1779607514987_678) is a natural gas, wall-mounted tankless water heater designed for residential indoor use, sold in discounted cosmetic-condition units while still tested for working performance.
• Strong whole-home hot water capacity — Delivers up to 6.0 GPM at ~145,000 BTU, supporting 2–3 simultaneous applications (showers, sinks, appliances) in small to mid-size homes.
• Energy-efficient continuous heating — On-demand system provides “endless” hot water while using a modulating gas valve and low electrical draw for improved efficiency compared to storage tanks.
• Compact indoor wall-mount design — Space-saving build with integrated exhaust fan and freeze protection, intended for indoor installation with proper venting setup.
• Smart temperature control system — Digital controls with sensors help regulate water temperature stability and reduce sudden hot/cold fluctuations during use.
• Best for budget-conscious home upgrades — Scratch & dent pricing makes it attractive for homeowners or builders wanting tankless performance at lower cost, especially for rentals, cabins, or secondary homes.
• Key consideration before buying — Requires professional installation, proper gas sizing, and 3-inch venting; as a scratch & dent unit, cosmetic imperfections are expected even though functionality is tested.

                   
Q&A      

Q: What is this Eccotemp Builder Series 6.0 GPM unit?
A: It is a scratch & dent version of the Eccotemp 6GB-ING indoor natural gas tankless water heater, designed to deliver on-demand hot water for residential and light commercial use with minor cosmetic imperfections but full working functionality.

Q: What does “scratch & dent” mean?
A: It means the unit may have cosmetic blemishes or prior handling marks, but it is tested to original working condition and typically includes manufacturer warranty coverage (may vary by seller).

Q: What is the flow rate and performance?
A: It provides up to 6.0 GPM (gallons per minute) with a temperature rise of about 45°F, powered by up to 145,000 BTU natural gas input, supporting 2–3 simultaneous hot water applications.

Q: What homes is it suitable for?
A: It is ideal for small to medium single-family homes, townhomes, condos, cabins, apartments, and light commercial setups where indoor installation is required.

Q: Does it require electricity?
A: Yes. It uses a 110/120V power connection for the fan, control board, and safety systems, consuming very low power during operation.

Q: Can it support multiple bathrooms?
A: Yes, it is rated for about 2 bathrooms or 2–3 simultaneous water uses, depending on water flow demand and incoming water temperature.

Q: What installation requirements does it have?
A: It requires indoor wall mounting, 3-inch venting (horizontal or vertical kit), and professional installation is strongly recommended for safety and compliance.

Maintenance Tips 

• Flush the system regularly (at least every 6–12 months) to remove scale buildup and maintain efficiency
• Check and clean inlet water filter to prevent flow restriction and ignition issues
• Inspect gas line connections for leaks, corrosion, or looseness before operation
• Ensure proper indoor venting (3-inch vent system) is clear and unobstructed for safe exhaust flow
• Descale heat exchanger periodically if you live in hard water areas to maintain stable temperature output
• Keep unit powered off before performing any maintenance or cleaning
• Verify water pressure stays within recommended operating range for consistent performance
• Check temperature sensors and display for error codes and address issues early
• Do not use for hydronic heating, recirculating systems, or floor heating applications
• Ensure professional installation is maintained—incorrect setup can reduce efficiency or cause faults
• Keep surrounding area dry and well-ventilated to prevent corrosion and overheating
• For scratch & dent units, periodically inspect external casing for cosmetic wear that may hide minor impact damage