Our Top 10 Recommendations for Best Tankless Water Heaters
Up-to-date pricing and reviews for best tankless water heaters on the market
Bestseller No. 1
Stiebel Eltron Tankless Water Heater – Tempra 24 Plus – Electric, On Demand Hot Water, Eco, White, 20.2
- TEMPRA 24 PLUS – This specific model is 24kW, 240V/208V, requires a min. recommended household electric service of 150 A, and offers an output water temperature of 68˚ to 140˚F. Check our guides below to compare features of our various Trend and Plus models, each available in different kW levels
Bestseller No. 2
Kelaro Tankless Water Heater Flushing Kit - Just add Vinegar Descaler
- Kit requires 2-3 gallons of white vinegar*** Not included. Some tankless manufacturers recommend using vinegar or another cleanser for flushing their equipment. Can also save money if you have vinegar at home already.
- Helps maintain the performance and extend the life of your tankless hot water heater. Easy directions for DIY Homeowner use.
- Includes 1/8 HP Utility Pump, 6 Ft Color Coded Hoses, 3.5 Gallon Bucket with EZ Open Lid & Instructions for using vinegar. Peel Off Lid is super flexible and much easier to remove than traditional paint bucket lids.
- Easily connects to tankless isolation valves using supplied 6' Color Coded Hoses.
- Works with Rheem, Bosch, Noritz, Rinnai, Takagi, Navien, Stiebel, Atmor, Ecosmart, Eccotemp, Marey Power, Tempra, Trutankless and others.
SaleBestseller No. 3
GIRARD 2GWHAM Tankless Water Heater
- Regulates the burner to maintain the set hot water temperature
- NOTE: Water heater door is not included and must be ordered with Girard's 2GWHAM Water Heater
- 42,000 BTUs which provides the optimum performance for an RV's plumbing
- No special LP gas lines or special plumbing required
- 12V power that operates at less than 3A; Freeze protection - designed for winter use
SaleBestseller No. 4
Ecosmart ECO 18 Electric Tankless Water Heater, 18 KW at 240 Volts with Patented Self Modulating Technology,White
- The product is highly durable
- The product is easy to use
- Manufactured in China
- Copper and stainless components
- Lifetime warranty for residential use
SaleBestseller No. 5
Rinnai V65IN Tankless Water Heater, Large, V65iN-Natural Gas/6.5 GPM
- Endless hot water for your entire home
- V65iN HE High Efficiency Tankless Hot Water Heater - Natural Gas: Indoor Installation Only
- Up to 6.5 GPM hot water flow rate (varies by groundwater temp)
- Control-R 2.0 mobile app features timers and schedules throughout the day and allows you to remotely put the system into vacation mode.
- Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)
Bestseller No. 6
Rinnai V53DeP Tankless Water Heaters, 5.3 GPM, V53DeP-Propane/5.3
- Endless hot water for your entire home
- V53DeP HE High Efficiency Tankless Hot Water Heater - Propane: Outdoor Installation Only
- Up to 5.3 GPM hot water flow rate (varies by groundwater temp)
- Control-R 2.0 mobile app features timers and schedules throughout the day and allows you to remotely put the system into vacation mode.
- Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)
SaleBestseller No. 7
Rinnai RU199iN Tankless Water Heaters, RU199in-Natural Gas/11 GPM
- Endless hot water for your entire home
- RU199in Sensei SE+ Super High Efficiency Tankless Hot Water Heater - Natural Gas: Indoor Installation Only
- Up to 11 GPM hot water flow rate (varies by groundwater temp)
- Circ-Logic technology allows you to set recirculation patterns that coincide with your typical habits. Hot water is available when you need it!
- Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)
Bestseller No. 8
Rheem RTEX-18 18kW 240V Electric Tankless Water Heater, small, Gray
- External digital thermostatic control with LED display (+/1 degree accuracy)
- Most advanced self-modulation, adjust power to meet hot water demand
- Durable Copper immersion two heating elements, field Serviceable. Flow Rate- up to 4.4 GPM
- Simple installation – bottom 3/4 inch NPT water connections
- Threaded for easy replacement, simple installation, digital temperature display
Bestseller No. 9
Bosch Electric Mini-Tank Water Heater Tronic 3000 T 2.5-Gallon (ES2.5) - Eliminate Time for Hot Water - Shelf, Wall or Floor Mounted
- CONVENIENT HOT WATER HEATER: 2.5 gallon point-of-use mini-tank fits under your sink to provide hot water right where you need it. Thermal efficiency is 98%. Dimensions : 13.75 W x 13.75 H x 10.75 D Inches
- LONG LASTING QUALITY: This electric water heater is easy to maintain and has premium glass-lined material for a long service life. (Amps 12A, Volts (VAC) 120)
- INDEPENDENT INSTALLATION: 36-37" cord plugs into a 120 volt outlet for independent installation or in-line with a large hot water source
- FAST RECOVERY RATE: Eliminates long waits for hot water at your sink, get on demand hot water at your every need (supplies up to 2 sinks at a time)
- EASILY MOUNTED: Can be shelf, wall or floor mounted (bracket included); simply tap into the cold water line and install the water heater directly at the sink to provide hot water
SaleBestseller No. 10
Happybuy Tankless Water Heater Propane 18L Propane Water Heater 4.8GPM 36 KW Propane Tankless WaterHeater Stainless Steel on Demand Water Heater Propane Fit for Home Outdoor RV Use
- 【SUPERB MATERIALS】- Power: 36 KW; Hot Water Output: 18 L/min(4.8 GPM); Gas Supply: LPG(Liquid Petroleum Gas); Water Temperature: 50 °F -140 °F; This tankless water heater propane is crafted with stainless steel case and inner copper devices, making it anti-rust, high-temperature resistant, no water leakage, and durable. Come with a portable shower head kit.
- 【6-IN-1 MULTI PROTECTIONS】- Our propane water heater is upgraded with six protection ways to ensure your security on the shower, such as Over 75℃(167 °F) protection, low water flow protection, anti-frozen protection, over water pressure protection, no flame protection, 20min timer, etc.
- 【EFFORTLESS CONTROL】- You can easily adjust the water temperature by rotating the gas & water knobs on the panel. Switch the summer/winter mode to change the fire row amount, and save 40% gas in your bill. The combustion device will reach ≥80.8% thermal efficiency to save 11.5% energy. Start at a 0.015 MPA low water pressure; normal working pressure is 0.02 MPA-0.8 MPA.
- 【WALL-MOUNT & DETAILS】- This gas water heater is light-weight & portable to be installed on the wall, tree, or outside the RV for space-saving. Well-selected devices are included like copper standard G1/2" hose connectors, filtration mesh, gas emission tube, and copper water tank. Ignite the heater with 2 "D"cell batteries, and no pilot light is needed.
- 【DIVERSIBLE USE SCENARIOS】- CE test passed, fast to heat, this propane hot water heater is perfect for showering, pet washing, outdoor cleaning, camping and trip road, etc. Provide you with constant hot water, especially in winter or cold places. Instant, endless hot water, enjoy a comfortable showering at any time & any location.
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