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Tankless Water Heater Electric 27kW at 240 Volt, ThermoMate On Demand Instant Hot Water Heater Up to 6.4GMP, Self-Modulating Energy Saving for Residential Indoor Shower, Draw 114Amp — Open-Box, 20% Off
Brand: thermomate
Condition: Used - VeryGood
$34306
$42999
-20% Save $8693
Updated: 4 days ago
Description
[Important] - This 27kW Heater Draws max 114Amp currrent which must requiring 3 dedicated Double-pole 40AMP Circuit Breakers using 3 x 8AWG wiring and strongly recommend 200Amp Household Service for stable use
[Instant Unlimited Hot Water] - On demand tankless electric water heater, providing hot water in 3 seconds when you need it and as long as you need, eliminating wait time, never run out of hot water again and No More cold shower. Flow Rate 5.27GPM @35°F Rise.
[Self-modulating Power] - Self-modulating technology regulating the amount of energy required to heat water only when you need it with 99.8% efficient, saving up to 60% on water heating cost comparing to traditional tank water heater. Wall mounted compact size with no water tank, convenient for any spaces, saving floor space and fitting into tight spaces.
[Stable Water Temperature] - Auto adjusting energy consumption basing on income water temperature and flow, ensuring maximum efficiency, continuous stable temperature and optimal power usage. Digital temperature display allowing adjustment in 1° increment from 80°F to 140°F. Heating element separated from water tube significantly reducing scale, corrosion and mineral buildup on the element, achieving better performance and low maintenance.
[Easy Installation & Safety Protection] - ETL certified with overheating protection, auto stop heating when detecting no water, quality workmanship for leakage protection
NOTE - Make sure this water heater is the correct size for your hot water need: 27kW 208 ~ 240V (adjustable) draw max 114Amp; Required breaker: 3 x Double-POLE 40AMP; Wire gauge 3 x 8AWG; Unit size 17.12" x 13.12" x 3.12"; Water connection 3/4" NPT
thermomate ET Series Electric Tankless Water Heater On Demand
Consistent Endless Hot Water in 3s
Choose our ET series tankless water heater, NO need to wait for water getting ready for a shower, NO sudden cold water during your shower. Our stable flow technology provide you immediate unlimited continuous hot water for as long as you need and anytime you want. You can adjust the temperature in 1° increment from 80°F to 140°F. thermomate tankless unit auto adjust power to ensure constant temperature output.
Energy efficient
Save as much as 60% on your electric bill compared to the traditional tank water heater. Electric tankless unit only heat water that you use, eliminating standby heat loss with the tank type heater. Also with auto modulating technology and 99.8% heating efficiency, thermomate ET tankless water heater can monitor water flow and temperature, and use only necessary power to heat water as efficiently as possible.
Save Space
Traditional whole house tank water heater is so bulky that it can only be placed in your garage or basement, which is far from your main water use point. Our lightweight and easy-to-install electric tankless water heaters can be mounted in small or tight spaces throughout your home with no need of venting to operate
User friendly and maintenance free design
Digital temperature display easy to adjust it by a single degree from 80°F to 140°F using the knob. Easy to install. Auto stop heating when there’s no water. Heating element is separated from water tube, significantly reducing scale, corrosion and mineral buildup, ensuring unit working stable for a long service life.
Specifications
Power: 27kW at 240V
Amperage: 114A
Temp rise: 102°F at 1.5GPM
Required breaker: 3 x Double-pole 40amp
Wire size: 3 x 8AWG
Water connection: 3/4” NPT
Water pressure: 150psi
Min. Water flow: 0.79GPM
Consistent Endless Hot Water in 3s
Choose our ET series tankless water heater, NO need to wait for water getting ready for a shower, NO sudden cold water during your shower. Our stable flow technology provide you immediate unlimited continuous hot water for as long as you need and anytime you want. You can adjust the temperature in 1° increment from 80°F to 140°F. thermomate tankless unit auto adjust power to ensure constant temperature output.
Energy efficient
Save as much as 60% on your electric bill compared to the traditional tank water heater. Electric tankless unit only heat water that you use, eliminating standby heat loss with the tank type heater. Also with auto modulating technology and 99.8% heating efficiency, thermomate ET tankless water heater can monitor water flow and temperature, and use only necessary power to heat water as efficiently as possible.
Save Space
Traditional whole house tank water heater is so bulky that it can only be placed in your garage or basement, which is far from your main water use point. Our lightweight and easy-to-install electric tankless water heaters can be mounted in small or tight spaces throughout your home with no need of venting to operate
User friendly and maintenance free design
Digital temperature display easy to adjust it by a single degree from 80°F to 140°F using the knob. Easy to install. Auto stop heating when there’s no water. Heating element is separated from water tube, significantly reducing scale, corrosion and mineral buildup, ensuring unit working stable for a long service life.
Specifications
Power: 27kW at 240V
Amperage: 114A
Temp rise: 102°F at 1.5GPM
Required breaker: 3 x Double-pole 40amp
Wire size: 3 x 8AWG
Water connection: 3/4” NPT
Water pressure: 150psi
Min. Water flow: 0.79GPM
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- 30-day return policy
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Product Details
- SKU:
- awhd-us-b08ml63gsx
- Model:
- ET270
- Country:
- US
- ASIN:
- B08ML63GSX
- UPC:
- 750139327607
Shopping Smarter
Common questions about buying open-box and refurbished.
Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $87 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
Why use OpenBoxFox?
Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for thermomate products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.
Is it safe to buy refurbished?
Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.
