List of Top 10 Best natural gas tankless hot water heater in Detail

Are you looking for best natural gas tankless hot water heater, we’ve consulted top experts who has in-and-out knowledge about the natural gas tankless hot water heater. We choose the top most quality product, which comes with amazing features you’ve never heard before. We have filter more than 100+ of product to give you top 10 list of best natural gas tankless hot water heater.

This list is undoubtedly the best natural gas tankless hot water heater available in the market today. However, if you don’t want to spend more time on filtering and finding which one is good natural gas tankless hot water heater, then you should absolutely go for our Top list of the winner. which comes with all the basic features one could expect in a natural gas tankless hot water heater.


Best natural gas tankless hot water heater – The Winners!


But these three has some more compitions too, Check out below List of Top 10 best natural gas tankless hot water heater.

If you are ready to choose a new natural gas tankless hot water heater, check out our recommendations for the best natural gas tankless hot water heater. But if you’d like to learn more about the various types of natural gas tankless hot water heater available and how to choose the right one for you, read on.


List of Top 10 Best natural gas tankless hot water heater In Detailed


SaleBestseller No. 1
Rheem 18kW 240V Tankless Electric Water Heater, 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
SaleBestseller No. 2
EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1, 17 x 17 x 3.5
  • Endless on-Demand Hot Water; Consistent hot water when you need it that never runs out; Continuously monitored water temperature and controlled flow rates ensure efficiency and consistent performance within 1 degree of selected temperature
  • Save Space; EcoSmart tankless electric water heaters are 90% smaller than traditional tank heaters; may be installed on wall or at point of use; Dimensions 17 x 17 x 3.75 inches
  • Save Energy; EcoSmart tankless electric water heaters are 99% thermal energy efficient; Only heats water when called unlike a tank heater that maintains water temperature even when not being used. Save up to 50% in water heating costs according to the Department of Energy
  • EcoSmart ECO 27 Sizing; Refer to the sizing map. Requires 3x40 AMP Double Pole Breaker, 27-kilowatt tankless electric water heater ideal for providing hot water for whole home applications; provides between 2.7 and 6.5 gallons-per-minute depending on the inlet water temperature; refer to the sizing guide to select the proper solution
  • Warranty and Certifications; Limited Lifetime Warranty on electronics, exchanger and element; UL-499 certified; ETL Listed
  • Required Breaker Quantity: Three 40 Amp Double Pole
  • Recommended Electrical Panel: 200 Amps
  • NEVER run out of hot water with an ECOSMART tankless water heater.
Bestseller No. 3
CAMPLUX Tankless Water Heater Outdoor, 1.32 GPM Portable Propane Camping Water Heater, 5L, AY132, White
  • Lightweight, Compact & Portable Design: The 10 pounds lightweight portable water heater's folding handle keeps it out of the way and enables easy setup outside.
  • Flow Rate & Temperature Specification: The temperature raise is 114.8℉ (46℃) at its highest point and 46.4℉ (8℃) is at its lowest point of 1.32 GPM. Also, 1.32 gallons of hot water can be produced per minute at the flow rate of 1.32 GPM.
  • Versatile Applications: The lowest water pressure at beginning for the water heater is 3.0 PSI. For off-grid and rural areas, this hot water generator powered by two size D batteries is ideal. No more chilly outdoor shower anymore.
  • 6-in-1 Protection & CSA Safety Approved: This tankless water heater is CSA Approved with anti-freezing protection, over-heating protection, low water flow protection, dry combustion protection, high water pressure protection and flame failure device.
  • Installation Instruction & Package Content: This Camplux AY132 heater comes with 1-year guarantee, 5 feet premium on/off shower head, 5 feet gas regulator, 1 set US-standard garden hose, and 1 installation hardware pack. Setting up this propane water heater simply takes 10 minutes.
  • Important Installation Tip: To avoid gas leakage caused by improper sealing of the water heater, DO NOT TWINE TEFLON TAPE between gas regulator and gas inlet pipe. Read the directions before installation check for gas leaks at all times before operating.
  • Warm Maintenance Tips: Damage caused by freezing is not covered under Camplux warranty. It must be properly drained if the water heater stored in cold climate, Freeze damage can occur in the heat exchanger or water valves. To drain the device properly, please open the drain stern located at the bottom right of the water heater . You can do so by turning in a counter clockwise direction. Please disconnect all incoming and outgoing water lines to ensure proper drainage from the water heater. When not in use, fully disconnect gas, incoming and outgoing waterlines. Store in a warm dray place.
Bestseller No. 4
Tankless Water Heater Propane 4.21GPM 16L Outdoor Portable GasHot Water Heater Instant Propane Water Heater with Digital Display Multi-Protection for Camping Trips Boat Cabins
  • 【Efficient & Energey Saving】-The water heater exchanger and main burner are desinged with advanced combustion technology to decrease consumption and burning noise.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,so you can get more hot water for less money.
  • 【CSA Approved Safety 】-Tankless Water Heater with CSA Approved Regulator, safe as per Canadian and US Standard.with more safety protection such as flame failure device, anti-freezing protection, over heating protection to ensure the family safety,Automatically decrease water pressure between 3.6-110PSI.
  • 【Lightweight Portable Design】-Compact size and lightweight make the water heater easy to carry and allow you to enjoy an amazing hot shower after a long day of camping, in your RV, or for giving your pet a bath,Dimension: 13.4x5.9x21.65 inches, Shower head with one button:just press the shower head button once to stop the water flow and prevent water waste.
  • 【Easy to Install】-Equipped with BSP pipe fittings and all necessary accesories , There are three interface ports under water heater. The left one is the Air inlet. ​The middle one is the shower port,and The right one is the water inlet, which is very convenient for customers to install.The tankless water heater will "caught on fire with improper operation. Always check whether leakage befor operation.
  • 【Widely Application】-Our water heater is mainly used for outdoor showering with hot water,provides you a safe and comfortable hot shower at anytime and anywhere, Compact and space-saving design is portable for the outdoors, which bringing an amazing hot shower for you when you are camping, hiking, fishing, beaching, etc. Besides, you can also wash your pets with this tankless water heater.
SaleBestseller No. 5
Rinnai RU199iN Condensing Tankless Hot Water Heater, 11 GPM, Natural Gas, Indoor Installation
  • Endless Hot Water: Our tankless hot water heaters offer unlimited whole-home hot water flow and come equipped with Circ-Logic for pairing with an external pump to reduce wait time for hot water via scheduled or on-demand recirculation
  • Energy and Space Efficient: The tankless design of this small hot water heater saves on space and conserves energy as it heats only when necessary
  • Optimal Water Pressure: With a hot water flow rate of up to 11 GPM, this tankless water heater provides a powerful, constant stream that can accommodate up to 7 appliances at once
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your water heater; We do not recommend installing a water heater without a technician
  • Guaranteed to Last: 15-, 5-, and 1-year residential for heat exchanger, labor, and parts, respectively; Wifi monitoring available with Controlr module (not included)
  • ENERGY STAR qualified with Uniform Energy Factor of 0.105
Bestseller No. 6
Rheem 11kW 240V Tankless Electric Water Heater
  • ON/OFF Dial Control with adjustable digital temperature display
  • Self-modulating power control
  • 11kW Model Flow Rate: up to 2.68 GPM
  • Side 1/2" NPT water connections
  • On demand, consistent and continuous hot water
SaleBestseller No. 7
Rinnai V53DeP Tankless Hot Water Heater, 5.3 GPM, Propane, Outdoor Installation
  • Endless Hot Water: Our tankless hot water heaters let you enjoy unlimited hot water flow throughout the house with a compact and durable design that fits your home and lifestyle
  • Energy and Space Efficient Tankless Gas Water Heater: This small hot water heater conserves energy, only heating when necessary; Enhanced scale detection lessens possibility of serious, long-term damage to unit
  • Optimal Water Pressure: This tankless water heater offers a high-performance hot water flow rate up to 5.3 GPM for a powerful, constant stream that serves up to 4 appliances at once
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater; We do not recommend installing a water heater without a technician
  • Guaranteed to Last: 10-, 5-, and 1-year residential factory warranty for heat exchanger, labor, and parts, respectively
Bestseller No. 8
Propane Gas Tankless Water Heater, MIZUDO 3.6 GPM, 80,000 BTU Indoor Installation Instant Hot Water Heater
  • 【Instant Hot Water Heater】Tankless water heaters can provide endless hot water on demand for 2- 3 water points.
  • 【Comfortable Bathing Experience】3.6 GPM hot water flow, precise temperature control, no water temperature sandwich.
  • 【Premium design and Durable】Adopt oxygen-free copper water tank, reduce heat loss, high efficiency and durability.
  • 【Compact Design】Save over 50% of available space compared to tank water heater.
  • 【Quality Service】If you encounter product quality problems, you can contact us by phone, email and message, and we will provide service according to the warranty policy.
Bestseller No. 9
Tankless Water Heater Electric 6.5kw 240V, ECOTOUCH Point-of-Use Hot Water Heater Digital Display,Electric Instant Hot Water Heater with Self-modulating,Overheating Protection,Black
  • 【Electric Water Heater on Demand】Applied with 6.5kW heating system, the instant water heater electric ECO65 supplies instant, sufficient and endless hot water of 110℉ or higher temp in seconds, no waiting for preheating nor terrible temp fluctuation, perfect companion for sink faucet. Time to get rid of those 110V "lukewarm" toys.
  • 【Smart Self Modulation】The tankless water heater electric ECO65 adjusts power input based on flow rate and temp setting in real time. For example, less power will be applied by the smart instant hot water heater when water flow is reduced, thus, you get still ideal temperature instead of scalding hot, comfortable experience for sure. Optimal energy efficiency of 98% saves considerable electric charge.
  • 【Simple Tankless Water Heater】The electric tankless water heater ECO65 comes with digital display & touch control panel so temp setting is easy job, you needn’t go through hard lesson of getting full understanding of working status of the 240v water heater tankless. Now turn on the faucet and let the smart tankless hot water heater do the rest.
  • 【Safe and Durable Water Heater】Newly updated with protection devices, every piece tankless water heater electric ECO65 goes through strict tests to ensure 100% safety. Inner water and electricity lines are specially designed to run separated so as to avoid leakage risk or scale build up. The on demand hot water heater ECO65 qualifies for ETL standard, you can expect outstanding performance for years to come.
  • 【Point of Use Water Heater】The sleek tankless water heater electric ECO65 is compact as an oatmeal box, making it possible to install any place as point of use water heater to avoid energy and water waste, ideal for kitchen sink, bar, school, hospital, community and hair salon. Please verify it is the right size for you: 6.5kW@240V(ONLY); dimensions 10.3" (W) x 15.4" (H) x 2" (D); plumbing connections :1/2" NPT.
Bestseller No. 10
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
  • ON/OFF Dial Control with adjustable digital temperature display
  • Self-modulating power control
  • 24kW Model Flow Rate: up to 5.9 GPM for RTEX-24
  • Bottom 3/4" NPT water connections
  • On demand, consistent and continuous hot water

Hope this list of the best natural gas tankless hot water heater will be helpful for you. Feel free to contact us if you have any questions about our site or our reviews, and we will be happy to help you with your purchasing decisions in any way we can.

Scroll to Top