Our Top 10 Recommendations for Cheap Tankless Water Heaters

Up-to-date pricing and reviews for cheap tankless water heaters on the market

SaleBestseller No. 1

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. 2

Savings of up to 50% on water heating costs. Dimensions :17H x 17W x 3.625D inches ;Pipes fittings :3/4 inch NPT
Digital temperature control in 1-degree increments allows control of hot water; Activation Flow: 0.3 GPM
Copper and stainless components designed for efficiency, durability and easy replacement.
Compact size saves valuable storage space, while the stylish and advanced design is pleasing to the eye and Copper and stainless components designed for efficiency, durability and easy replacement.
Prior to purchase & installation, please verify that this model is the right size for your hot water needs and electrical requirements. Electrical requirements: 27 kW, 240 volts, (3) 40 required breakers, 112.5 maximum power (AMP), (3) 8 required wire.Amperage Draw:113 A

SaleBestseller No. 3

Lifetime warranty
Save up to 60-percent on your water heating cost with an ECOSMART electric tankless water heater
Never run out of hot water with an ECOSMART tankless water heater
Patented Self Modulating Technology and design
ECOSMART tankless water heaters are 99.8-percent energy efficient.Uniform Energy Factor:0.98

Bestseller No. 4

V65iP HE High Efficiency Tankless Hot Water Heater - Propane: 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.
Endless hot water for your entire home.10,300 BTU (Minimum) / 150,000 BTU (Maximum)
Residential Factory Warranty - 120 months (heat exchanger), 12 months (labor), 60 months (parts)

SaleBestseller No. 5

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

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. 7

Kit requires 2 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.

Bestseller No. 8

CONTINUOUS FLOW – Advanced Flow Control German 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 measure water flow. Savings monitor even shows how much you save on energy costs.
EASY OPERATION – Electronic flow sensor switches on the powerful solid copper interior heating system of the water heater. It’s noise free while in use and has a digital temperature display and preset temperature memory buttons.
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 86˚ 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.

Bestseller No. 9

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. 10

Endless hot water for your entire home
V53DeN HE High Efficiency Tankless Hot Water Heater - Natural Gas: 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)