Advertising Disclosure Gas Water Heaters For Comparison - April 2026
6 Best Gas Water Heaters For In the UK
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant's customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. As an Amazon Associate we may earn from qualifying purchases. We may receive a commission from purchases made through links on our site, which will help us continue to provide you with value.
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| 1 Best Choice  9.7Exceptional | 2 Best Value  9.6Exceptional | 3  9.5Excellent | 4  9.2Excellent | 5 9.1Excellent | 6  8.8Very Good |
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ModelCAMPLUX Gas Water Heater 20 litres, Instant LPG Water Heater for Garden Shower, RV, Tiny House, ECO/Full Mode, BW Series BW528B | Model CAMPLUX Portable Gas Water Heater with Pump, Nano 3 Pro Gas Shower 3 L/min, Instant LPG Hot Water Heater for Outdoor Shower, Camping, Hiking | Model ThermoMate AZ132 5L Portable Gas Water Heater, Tankless Water Heater with Folding Handle, Instant Gas Boiler Use for Outdoor Showers, Camping, Horses, RV Trip | Model Gas Water Heater,18L Outdoor Instant Water Heater with Digital Display and Multi-Protection for Indoor Shower,Kitchenette,Laundry Room,Courtyards,Camping Outdoor Shower | Model ThermoMate AZ132 5L Portable Gas Water Heater, Tankless Water Heater with Folding Handle, Instant Gas Boiler Use for Outdoor Showers, Camping, Horses, RV Trip | Model Gas Water Heater,16L Outdoor Instant Water Heater with Digital Display and Multi-Protection for Indoor Shower,Kitchenette,Laundry Room,Courtyards,Camping Outdoor Shower |
BrandCAMPLUX | Brand CAMPLUX | Brand thermomate | Brand VELPAX | Brand thermomate | Brand VELPAX |
Reviews | Reviews | Reviews  | Reviews - | Reviews | Reviews - |
Tech Specs | |||||
product dimensions 20 x 20 x 70 cm 13.52 kg | product dimensions 17 x 17 x 37 cm 6.21 kg | product dimensions - | product dimensions 38 x 38 x 23.5 cm 9 kg | product dimensions - | product dimensions 38 x 38 x 23.49 cm 8 kg |
item weight 13.5 kg | item weight 6.21 kg | item weight - | item weight 9 kg | item weight - | item weight 8 kg |
included components 1 x CAMPLUX 20L gas water heater, 1 x Shower head with 150cm, 1 x G1/2'' water connector, 1 x Installation kits, 1 x User manual | included components Cigarette Lighter Cable 500cm, Gas Regulator & 150cm Hose, Gas Water Heater, Water Pump Assembly, Shower Head & 250cm Hose | included components - | included components NO | included components - | included components NO |
color Black | color Gray | color White | color Black | color White | color Black |
batteries included No | batteries included No | batteries included - | batteries included No | batteries included - | batteries included No |
flow rate 20 Litres Per Minute | flow rate 3 Litres Per Minute | flow rate - | flow rate - | flow rate - | flow rate - |
voltage 3 Volts | voltage 12 Volts | voltage - | voltage - | voltage - | voltage - |
wattage 40 KW | wattage 6 KW | wattage - | wattage - | wattage - | wattage - |
size 3 Knobs | size 3 Litres | size - | size 18L | size - | size 16L |
batteries required Yes | batteries required Yes | batteries required - | batteries required No | batteries required - | batteries required No |
batteries- | batteries 1 Lithium Ion batteries required. | batteries - | batteries - | batteries - | batteries - |
Available On | Available On | Available On | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.7
1CAMPLUX20% OffCAMPLUX Gas Water Heater 20 litres, Instant LPG Water Heater for Garden Shower, RV, Tiny House, ECO/Full Mode, BW Series BW528B
Main highlights- φ128mm Vent Pipe: This design ensures the outdoor gas water heater efficiently heat dissipation, preventing internal overheating and maintaining superior performance even during extended use
- Precise Temperature Control: ECO / FULL mode switching (40% energy saving for ECO). Water temperature is easily to be adjusted via gas and water control knobs. You can accurately set your ideal water temperature for a relaxing shower via the LED display
- Outdoor Hot Water Solutions: This gas water heater is easy to be installed, requiring only 2-D-cell batteries for instant hot water without any electricity mains, suitable for caravans, campsite, poolside, cabins and barns, and other off-grid areas
- Butane or Propane Gas Convertible: 28-30mbar for butane gas and 37mbar for propane gas. Just use the correct gas regulator. Gas fitting nut: G1/2''
- 20 L/M on Demand Hot Water: This LPG tankless water heater delivers 20 litres of hot water per minute for large families or places that require a large amount of hot water
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9.6
2CAMPLUX20% Off
CAMPLUX Portable Gas Water Heater with Pump, Nano 3 Pro Gas Shower 3 L/min, Instant LPG Hot Water Heater for Outdoor Shower, Camping, Hiking
Why we love it
Instant hot water in 5 seconds.
Portable and lightweight design.
Versatile power and gas options.
Main highlights- What You Get: 1 x battery-powered camping water heater, 1 x 12V submersion water pump, 1 x 12V DC cigarette lighter cable 500 cm, 1 x gas regulator & gas inlet connector, 1 x shower head & 250 cm hose, 1 x shower bracket
- Warm Tips: Make sure the charging power is 12V before you charge. The provided gas regulator is only suit for propane gas bottle with 27mm clip-on connector
- Intelligent LED Display: Show the status of the gas shower, like real-time water temperature of inlet and outlet, power level, error codes etc. Water temperature ranges from 28-50°C(△t=22K)
- Compact & Portable Design: This gas water heater weighs only 6.21 KG with 2 durable handles. It is lightweight and easy to store, making it an ideal companion for camping, hiking, and other outdoor adventures
- 3 L/min Instant Hot Water: Instantly ignites within 5 seconds and delivers a continuous and stable 3 litres of hot water output per minute
- 2 Types of Gas Supply: This hot water heater runs both on propane and butane cylinders. Please just use a 37mbar gas regulator (provided) for propane gas and 28-30mbar regulator for butane gas
- 2 Flexible Operation Modes: Nano 3 Pro gas shower can either run on battery mode with 4000 mAh rechargeable batteries or direct power mode via the 12V DC cigarette lighter in your car
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9.5
3thermomate
ThermoMate AZ132 5L Portable Gas Water Heater, Tankless Water Heater with Folding Handle, Instant Gas Boiler Use for Outdoor Showers, Camping, Horses, RV Trip
Why we love it
Low water pressure startup: You dont need a lot of water pressure to start this heater.
Energy saving: This heater is designed to use less gas, saving you money.
Multiple protections: This heater has multiple safety features, including an automatic shut off if the temperature gets too high.
Main highlights- 【PORTABLE HANDLE & LIGHTWEIGHT】-With compact and lightweight design, the lpg water boiler is suitable for outdoors activities. It is a great partner for an amazing hot shower when you are camping, hiking , beaching, etc. Besides, you can also wash your pets with this 5L gas shower , or provide hot water for tub.
- 【INSTANT ENDLESS HOT WATER】- Thermomate gas water heater instantly delivers 5L/min of hot water at 25°C temperature rising, with 0.25 bar low water pressure startup. Ideal for low water pressure areas.
- 【ENERGY SAVING】-Thermomate portable propane water heater is equipped with 3-ROW harmonica style burner, which can decrease gas consumption and will save 11.5% energy. The tankless water heater heats the required amount of water directly from the source, giving you an endless supply of hot water when you need it.
- 【EASY INSTALLATION】- Thermomate tankless water heater takes 10 minutes to complete the installation and setup following the user manual, Powered by 2 "D" batteries (not included). Provide customer service around the clock
- 【CE-CERTIFIED GAR EU STANDARD】- Anti-freezing apparatus drains the residual water to avoid damage of freezing under cold areas to the gas boiler or in case of a long time no use. Featuring overheating and flameout protection, the gas supply will shut off automatically under unexpectedly flame out or high water temperature over 80°C.
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Value for money
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Value for money
topchoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
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