Top 10 Must-Haves & Best Gas Hot Water Heater Brands, Reviews & Comparison

Gas hot water heaters are an essential appliance for providing hot water for your home. There are many different gas hot water heater brands available, each offering unique features and benefits. When choosing a gas hot water heater, you should consider the size of your home, fuel type, energy efficiency, and cost. Some of the top gas hot water heater brands on the market include Rheem, A.O. Smith, Bradford White, and Bosch. Rheem offers a variety of models that use natural gas or propane and feature up to 98% energy efficiency. A.O. Smith offers high-efficiency models with adjustable thermostats and electronic pilot ignition. Bradford White has a range of models that are designed for easy maintenance and dependable operation. Bosch offers models that are designed to fit into tight spaces and offer precision temperature control. Regardless of the brand you choose, you can rest assured that you are getting a quality gas hot water heater.

# Product Title Rating Details
1 TC-Home 16L Natural Gas Tankless Hot Water Heater [...] TC-Home 16L Natural Gas Tankless Hot […]

3.7

2 Tankless Water Heater 4.21GPM 16L Outdoor Portable [...] Tankless Water Heater 4.21GPM 16L […]

3.8

3 Tankless Water Heater, 3.17 GPM Instant Hot Natural [...] Tankless Water Heater, 3.17 GPM Instant […]

3.9

4 Tengchang 8L Hot Water Heater LPG Propane Gas Tankless [...] Tengchang 8L Hot Water Heater LPG […]

4

5 Upgraded 9003542 Natural Gas Pilot Assembly, 9003542 [...] Upgraded 9003542 Natural Gas Pilot […]

4.1

6 Natural Gas Tankless Water Heater, Camplux On Demand [...] Natural Gas Tankless Water Heater, […]

4.2

7 Reliance Water Heater LIQUID PROPANE Gas Control Valve [...] Reliance Water Heater LIQUID PROPANE […]

4.3

8 Camplux Tankless Water Heater, 1.32 GPM Portable [...] Camplux Tankless Water Heater, 1.32 GPM […]

4.3

9 Water Heater Pilot Assembly for Tubing Lp Propane Gas, [...] Water Heater Pilot Assembly for Tubing […]

4.4

10 Reliance Gas Thermopile Assembly 100112330 Water [...] Reliance Gas Thermopile Assembly […]

4.5

Our Top 10 Selection of Best Gas Hot Water Heater Brands, Expert’s Top Recommendations

1#. TC-Home 16L Natural Gas Tankless Hot Water Heater 4.2GPM on Demand Water Heater

Product image of TC-Home 16L Natural Gas Tankless Hot Water Heater 4.2GPM on Demand Water Heater
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Features

  • Gas Type: Natural Gas; Capacity: 16L/min (4.2 GPM), Cover Material: Cold Rolled Sheet; 25 degrees warm water producing rate; Working temperature:-8-45℃; Thermal input: 24 KW; Thermal efficiency: ≥80.8%; Temperature rise: 25℃. Torque Range: 3-3.5 N.m
  • Copper water tank; High-quality stringy stainless steel panel; Minimum working water pressure: 0.025-0.8MPa; Gas pressure: 2000Pa; Fire Catching Ways: Electricity pulse automatic fire catching; Discharge Ways: Flue automatic gas discharge; Applicable water pressure :Zero pressure starting
  • Cold water connection: G1/2” tube; Warm water connection: G1/2” tube; NPT 1/2″ female to G 1/2″ male (If you need connect to NPT, please buy a adapter.) ; Gas inlet: G1/2”; Gas pipeline (outer diameter): 20mm rubber gas hose; Vent Type:4.3″ Flue Duct
  • Automatic ignition system, Flame failure protection device; Water & gas combination unit ,Fitted with over heating and pressure safeguard; Suitable for both summer and winter 20 min. off self-timer; Mains power not required
  • Electrical requirement: DC3V, Automatic electric ignition powered by two (2) size ‘D’ batteries (batteries not included); No electrical hook up; No standing pilot; Gross weight: 20Lbs; Certification: ISO 9001:2000

  • 2#. Tankless Water Heater 4.21GPM 16L Outdoor Portable GasHot Water Heater Instant Propane Water Heater with Digital Display Multi-Protection for Camping Trips Boat Cabins

    Product image of Tankless Water Heater 4.21GPM 16L Outdoor Portable GasHot Water Heater Instant Propane Water Heater with Digital Display Multi-Protection for Camping Trips Boat Cabins
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    Features

  • 【Premiun Water Heater】-Tankless Water Heater with CSA Approved Regulator, with more safety protection such as flame failure device, anti-freezing protection,over heating protection,Just need 3.6PSI of water pressure,4.21 gallons of hot water can be output per minute. The maximum temperature raise is 167 °F,Applicable only Propane(LPG)
  • 【Efficient & Energey Saving】-The Propane Water Heater exchanger and main burner are desinged with advanced combustion technology to decrease gas consumption and burning noise.Maximum power output 68000btu/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.
  • 【Portable Design】-Portable Water Heater 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,Size: 21.65×5.9×13.4 inches,Gas Hot Water Heater is Powered by 2 pcs size “D”cell Batteries.
  • 【Complete Accessories】-This tankless water heater comes with CSA approval 5FT Gas Regulator, 5 Spray Modes high pressure Shower Head with 59in(1.5m) extended Long Stainless Steel Hose and Shower Holder,There are three interface ports under propane water heater. The left one is the Air inlet. ​The middle one is the shower port,and The right one is the water inlet.
  • 【Wide Usage】- This Camping Heater,Perfect for Outdoor Shower,Which Bringing an Amazing hot Shower for you When you are Camping, Hiking, Fishing, Beaching, Portable Hot Water Sink, RV/SUV/MPV, etc. Besides, you can Also Wash your Pets with this Tankless Water Heater,Always check gas leakage before operation.

  • 3#. Tankless Water Heater, 3.17 GPM Instant Hot Natural Gas Water Heater with Constant Temperature, Indoor (Natural Gas)

    Product image of Tankless Water Heater, 3.17 GPM Instant Hot Natural Gas Water Heater with Constant Temperature, Indoor (Natural Gas)
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    Features

  • Note: Please download and read the installation manual and product manual carefully when purchasing the product to ensure that your installation environment is consistent with this product. When installing, please strictly follow the installation manual and installation instruction video, otherwise it may not work. If you have any questions about the product, please contact us by email. We have a professional technical support team.
  • 【Tankless Instant Hot Water Heater】No need to preheat before using the tankless water heater. As soon as you turn on the tap, the water flows with your desired temperature.
  • 【High Sensitive Touch Led Display】Comes with smart digital LED display high-definition large screen, freely adjustable the temperature between 30℃-65℃.
  • 【Multiple Security Protection】The natural gas water heater is upgraded with 12 protection methods to ensure your safety. Such as dry burning protection, over 65℃(149 °F) protection, leakage protection, etc.Note: In cold weather, if the water heater is not used for a long time, it is necessary to open the pressure relief valve to drain the residual water in the water heater to prevent the exchanger or water pipe from freezing and swelling.
  • 【Energy and Money Saving】The hot water heater adjusts power input based on flow rate and temp setting in real time. Summer/winter 2 modes to save up to 60% on your natural gas costs.
  • 【Quality Material】Made with brushed stainless steel material, the natural gas water heater has the function of high temperature resistance, corrosion resistance. Built-in oxygen-free copper water tank, long service time.Note: This product must be installed with a ventilation and smoke exhaust pipe for normal use.
  • NOTE: This product does not have a serial number. If you don’t know how to install a water heater at all, it is recommended not to buy it.

  • 4#. Tengchang 8L Hot Water Heater LPG Propane Gas Tankless Instant Water Boiler W/Shower

    Product image of Tengchang 8L Hot Water Heater LPG Propane Gas Tankless Instant Water Boiler W/Shower
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    Features

  • High efficient energy saving: the heater exchanger and main burner adopt mostly advanced energy-saving and combustion technology to decrease gas consumption and burning noise. Size: 20.5″x12.6″x5.7″
  • Low water-pressured startup: the water control linkage valve makes the heater start up under low water pressure and shortage areas and those living in high stairs.
  • Manifold auto protection: for the sake of your safety. Ion flame inspection: to automatically shut down gas power under unexpected flameout. 
  • Over water pressure protection function: to automatically decrease pressure under excessive high water pressure.
  • Controller design: both cold water and warm water can be properly controlled. 

  • 5#. Upgraded 9003542 Natural Gas Pilot Assembly, 9003542 Pilot Assembly Replacement for Natural Gas Water Heater,100109295 18324-190 Water Heater Parts Compatible with A.O.Smith, Kenmore, State GS and GSX

    Product image of Upgraded 9003542 Natural Gas Pilot Assembly, 9003542 Pilot Assembly Replacement for Natural Gas Water Heater,100109295 18324-190 Water Heater Parts Compatible with A.O.Smith, Kenmore, State GS and GSX
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    Features

  • Excellent Quality:Upgraded 9003542 nat gas pilot assembly use high-quality raw materials which has undergone extensive testing by suppliers to ensure longer durability. 9003542 pilot assembly can perfectly solve the problems of water heater pilot light kept going out and water heater not heating due to thermocouple damage.Part may differ in appearance but is a functional equivalent to prior parts including:183824-190,9003530 pilot assembly.
  • Widely Applicable & Perfect Fit:9003542 natural gas pilot assembly can perfectly replace 183824-190, 9003542005,100109295 pilot assembly. Fits following brands and models:Kenmore water heater parts▶▶153333315HA, 153333316HA, 153333345, 153333346, 153333347, 153333445, 153333446, 153333447, 153333850,etc. A.O. Smith water heater parts ▶▶A.O. Smith FCV40, FCV50, GCV30, GCV50, GCVH30, GCVT40, GCVT40Q, GVR40, XCV30, XCV40, XCV50, XCVH30, XCVL40, XCVT40, XCVT40L,etc. State GS and GSX water heater parts▶▶ GS665HRRT100, GS665YRRT100, GS665YRRT101, GSX65HRRT100, GSX65YRRT100, etc.
  • Easy to Install:9003542 water heater pilot assembly is very easy to install. Shutting gas off, pull entire burner assembly. Take out the 2 screws on the mounting plate and remove old thermocouple and spark ignition. Gently unroll, run back through burner door (careful with the lines), then remount plates to existing burner.It only takes 15-30 minutes to complete the replacement operation easily.
  • Reminder: There are many other reasons for the pilot not to light in addition to the damaged water heater pilot assembly. It’s recommended that you first find the real reason. If the cause is damaged water heater pilot assembly, please check the appearance of the pilot assembly first, so as to avoid inconvenience caused by buying the wrong model.
  • Save time and money:Asking a plumber will cost hundreds of dollars at a time, replacing the water heater will cost thousands of dollars. Now you only need to spend dozens of dollars, you can easily solve the water heater not heating in a few hours.
  • After-sales service guarantee:If you find that the product has quality problems or can’t be used after installation, don’t rush to evaluate, you can contact us to apply for a refund or exchange at any time. Damage caused by quality problems can be replaced free of charge within 1 year of purchase.

  • 6#. Natural Gas Tankless Water Heater, Camplux On Demand Hot Water Heaters Whole House, 6.86 GPM, Outdoor

    Product image of Natural Gas Tankless Water Heater, Camplux On Demand Hot Water Heaters Whole House, 6.86 GPM, Outdoor
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    Features

  • Installation Guide. We recommend that all installations must in accordance with the local building and plumbing codes of the installation location, install the hot water heater by a licensed professional plumber.
  • Instant Hot Tankless Water Heater. Camplux advanced 6.86 GPM high capacity natural gas tankless water heater delivers 6.86 gallons per minute of on-demand endless hot water. It is suitable for 3-4 outlet points, which can satisfy whole family.
  • Easy Installation. It won’t take up your indoor space, keeping your home more airy and having a more comfortable living experience. The tankless water heater includes digital remote control with a 3.3 feet cable for convenient flow control.
  • Saving Energy & Money. Maximum power output 180,000btu/hour, Camplux natural gas tankless water heater only activates with max energy factor of 0.82 for natural gas when use.Low NOx emission levels, average 9.5ppm for environmental protection.
  • Excellent Durable Quality. CSA certified in the United States and Canada. Adopting the world’s most advanced technology, superior safety and durability.
  • 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.

  • 7#. Reliance Water Heater LIQUID PROPANE Gas Control Valve 100112338 9007890005 100093977 6911135 Thermostat Compatible with A.O. Smith, Reliance, State, and American Branded Water Heaters

    Product image of Reliance Water Heater LIQUID PROPANE Gas Control Valve 100112338 9007890005 100093977 6911135 Thermostat Compatible with A.O. Smith, Reliance, State, and American Branded Water Heaters
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    Features

  • PLEASE PROVIDE MODEL AND SERIAL NUMBER OF YOUR WATER HEATER IF YOU NEED US TO DETERMINE CORRECT GAS VALVE PART NUMBER!
  • PROPANE gas control valve is compatible with all A.O. Smith manufactured products including A.O. Smith, Reliance, State, and American branded heaters
  • Intended use with a liquid propane gas hot water heater. Will NOT WORK ON Natural gas tanks
  • A service technician is recommended for the repair to ensure the gas supply line is leak free
  • Please be aware part may come labeled RESIDEO as there was a corporate acquisition. It is still the correct part!

  • 8#. Camplux Tankless Water Heater, 1.32 GPM Portable Propane Outdoor Camping Water Heater, 5L, AY132, White

    Product image of Camplux Tankless Water Heater, 1.32 GPM Portable Propane Outdoor Camping Water Heater, 5L, AY132, White
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    Features

  • 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.

  • 9#. Water Heater Pilot Assembly for Tubing Lp Propane Gas, Universal Pilot Assembly for 24-inch Gas Furnaces Boilers Water Heater Replacement Parts, Includes Pilot Thermocouple and Tubing

    Product image of Water Heater Pilot Assembly for Tubing Lp Propane Gas, Universal Pilot Assembly for 24-inch Gas Furnaces Boilers Water Heater Replacement Parts, Includes Pilot Thermocouple and Tubing
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    Features

  • ✅【Water Heater Replacement Parts Includes】Lp propane gas water heater pilot assembly and thermocouple.
  • ✅【Spicification】Standard overall length of the silver tube is 24″, the length of the Copper Tube Thermocouple Is 22″, and the outer diameter of the tube Is 1/8″. If the size matches, the thermocouple for Water Heater can help your old water heater get back to work again.
  • ✅【Compatibility】The gas pilot tubing assembly is compatible with many water heaters on the market but not all.
  • ✅【Note】Only qualified service personnel should attempt to repair gas equipment!!!
  • ✅【Services】We are committed to offering superior quality products and efficient customer service. For any product questions, please contact us, and we will get back to you ASAP.

  • 10#. Reliance Gas Thermopile Assembly 100112330 Water Heater Pilot Assembly Compatible with Reliance, State, A.O. Smith, and American Branded Heaters

    Product image of Reliance Gas Thermopile Assembly 100112330 Water Heater Pilot Assembly Compatible with Reliance, State, A.O. Smith, and American Branded Heaters
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    Features

  • Gas Thermopile Assembly for hot water heaters 100112330
  • PILOT/THERMOPILE W/TUBING,NATURAL
  • A service technician is recommended for this repair because the gas supply line connections must be checked for leaks after the repair
  • We need the model and serial number of your water heater in order to determine the correct part number. You can find that information on the metal data plate located on the side of your heater. Please provide that information in a private message to us for fastest reply time. Thank you!

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