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
- CONTINUOUS FLOW – Advanced Flow Control patented technology invented by Stiebel Eltron, automatically maintains water temperature for constant comfort. It’ll reduce flow slightly if hot water demand exceeds capacity. Hot showers will never be interrupted again
- SPACE & ENERGY SAVER – Its small, sleek white design saves space yet still provides endless hot water for your whole house, and no venting is required. Eco friendly unit saves energy with auto-modulation and the ability to electronically control water flow. Savings monitor even shows how much you save on energy costs
- EASY OPERATION – Electronic switch activates the hot water heater and it’s noise free while in use. Has a digital temperature display and preset temperature and memory buttons, while the interior solid copper heating system does all the power work
- TEMPRA 24 PLUS – This specific model is 24kW, 240V, requires a min recommended 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
- WARRANTIES INCLUDED – Stiebel Eltron’s top-rated electric tankless water heaters perform with the highest standards for comfort and reliability. Our 7-Year Leakage and 3-Year Parts Warranties are included with purchase
SaleBestseller No. 2
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
Bestseller No. 3
Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, GRAY
- External adjustable digital thermostatic control with LED display (+/1 degree accuracy
- Durable Copper immersion two heating elements, field Serviceable.Self-modulating power control
- Simple installation – 1/2 NPT adapters included; side 1/2 inch Compression water connections
- 99.8% energy efficient. External controls to adjust temperature in increments of 1°f. Water-Saver Shower Head – 1.5 GPM
- Threaded for easy replacement, simple installation, digital temperature display 54 A. 13kW Model Flow Rate: up to 3.17 GPM
Bestseller No. 4
Superior Pump 91660 Tankless Water Heater Descaler Pump Kit, Black
- Superior Pump 91660 Descaler Pump Kit is designed to clean and descale most Tankless Water Heaters
- Descaler kit includes 1/6HP pump, 3.5 gallon pail with screw top lid, two 3/4-inch GHT X 6-foot stainless steel hoses, and 7oz non-toxic descaler powder
- 1/6HP Thermoplastic utility pump moves up to 1920 Gal. per hour; Will pump up to 20-feet of vertical height; Oil-free motor design
- 1-inch NPT discharge; Includes 3/4-inch garden hose adapter for use with stainless steel hose; 8-foot power cord CSA Listed; convenient carrying handle
- Non-clogging reinforced thermoplastic impeller; Handles up to 1/8-inch solids; Stainless steel fasteners; Bottom screen filters out debris and is easy cleanable
Bestseller No. 5
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. 6
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. 7
Ecosmart ECO 36 36kw 240V Electric Tankless Water Heater
- Sleek and compact design with digital output temperature display
- ECOSMART tankless water heaters are 99.8-percent energy efficient
- Manufactured in United States
- Pipe Fittings:3/4 inch NPT
- Required Breaker:4 x 40 A
Bestseller No. 8
Camplux 2.64 GPM Portable Propane Water Heater,Tankless Propane Gas Tankless Water Heater with Digital Display,On Demand Hot Gas Water Heater for Campings,Road Trips,White
- Compact,Light Weight Portable Design-12.8 (L)*6.1(W)*21.65(H) inch ,Weight-23.85 lb. Compact and portable design perfect for barns,cabins,outdoor instant hot shower and road trips.
- Easy Installation for Instant Hot Water-It only takes you a few minutes to get 2.64 gallons per minute of instant hot water. The camplux portable water heater lights when water pressure between 3.6-110 PSI, low water pressure is perfect for campings and remote cabins.
- Multiple Protection Ensure Your Safety-Flame failure device, anti-freezing protection, over heating protection to ensure the family safety. The anti-freezing drain plug discharges the residual water to avoid freezing in cold areas for long-time maintenance. Gas supply automatically shut off when high water temperature protection over 167 °F.
- Power Efficient & Energey Saving -Maximum power output 68,000btu/hour, you will get instant endless hot water easily wherever you are. Compact and lightweight structure with 11.5% energy saving technology. The propane water heater exchanger and main burner are desinged with advanced combustion technology to decrease gas consumption and burning noise.
- Considerate Customer Service- Here at Camplux, customer service is everything ! We offer 24 shift hours customer service make the customer experience easy and fast through our live chat, phone support & our online helpdesk. Have a question? Give us a call at (844) 538-7475.
Bestseller No. 9
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
Bestseller No. 10
Rinnai V65IN Tankless Water Heater, Large, V65iN-Natural Gas/6.5 GPM
- 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)