10 Best Gas Water Heaters- Oct 2025, UK

1212 reviews analysed

Rank	Product Name	Score
1^st	FORAVER 18L LPG Water Heater 4.8GPM Propane Gas Tankless Stainless Instant Boiler 36KW Liq... By FORAVER 124 Reviews Show More Product Highlights Product: 18L Gas Water Heater; Water heater Type: Tankless; Heat Output Power: 36 KW; Gas Pressure(LPG): 2800 Pa Hot Water Output: 18 L/min (4.8 GPM); Use Gas Type: Liquefied Petroleum Gas (LPG); Rubber Gas Hose(Outer diameter): 20 mm (0.79 inch) Modern fashionable line shape designed, magnificent thin-shaped appearance; High efficient energy saving; Low water-pressure start up Manifold auto protection, Lon flame inspection; Controller design, over heat protection; Over water pressure protection function, anti-freezing protection function. Every type of water heater is only suitable for one kind of gas. This 18L water heater is ONLY for Liquefied Petroleum Gas (Propane).	9.8 SCORE	Check Price
2^nd	Cointra Optima COB-10p Propane Gas Water Heater, 10 litres per Minute, 17.8 kW By Cointra 124 Reviews Show More Product Highlights Tankless water heater, very small dimensions, two year warranty! No pilotflame Propane or butane gas waterheater RV, cabin, lodge, or just at your home English manual	9.0 SCORE	Check Price
3^rd	Camplux AY132 Tankless Propane Gas Water Heater White 5L By CAMPLUX ENJOY OUTDOOR LIFE 124 Reviews Show More Product Highlights ➤LOW WATER PRESSURE STARTUP- Camplux AY132 gas water heater provides 5L/MIN of endless hot water once the tap is turned on. With 0.17 bar start up, it is great for campersite, RV with low water pressure. You can enjoy outdoor shower, bath your horses, wash your pets with this portable camping gas shower. ➤SAVING ENERGY & MONEY- The 5L gas shower employs energy saving technology, higher temperature raise at same cost of gas. Unlike the storage water heater, this tankless water heater only heats the water in amount for you need. No need to be preheated, thus eliminating the waiting time for hot water. ➤MULTIPLE PROTECTION- Flame failure protection, overheat protection, oxygen depletion safety shutoff protection to ensure your family safety. Drain plug is applied to drain off the entire water content when it is not used for so long or outside temperature is near or below 0℃, prolonging its service life. ➤EASY TO INSTALL & USE- The portable water heater is equipped with a folding handle for easy carrying whenever you go for camping tours in remote areas. You can directly hang it with the handle or mount it with the provided installation kits, on the trailer, RV, caravan and even a trolley. It is ignited by 2 "D" size batteries, thus it can be used as a backup in such areas where there is no electricity supply. ➤PLEASE NOTICE - We provide a 37mbar CE approved gas regulator (in red) for quick installation to the propane gas cylinder. Please be aware that the gas regulator provided is only compatible with the propane gas bottle with 27mm clip on connection. If your cylinder cannot meet this standard, another gas regulator is needed.	9.1 SCORE	Check Price
4^th	Hopopular Portable Tankless Water Heater 18L LPG Gas Propane Water Heater Tankless Instant... By Hopopular 124 Reviews Show More Product Highlights Propane water heater tankless gas type: LPG Liquid Petroleum Gas (Propane),Capacity: 18L/min (4.8Gal) Propane water heater temperature rise: 25℃,Minimum working water pressure: 0.02MPa,Gas pressure: 2800Pa Propane hot water heater thermal input: 36KW Thermal efficiency: ≥80.8% Temperature rise: 25℃ Liquid propane gas water heater automatic ignition system;Flame failure protection device;Anti-freezing protection function Propane tankless water heater must be used under the condition of ventilation,ensuring the normal condition of the flue kit	9.2 SCORE	Check Price
5^th	Gas Water Heater, Thermomate AZ132 5L Outdoor Portable Water Heater, Instant Propane Gas S... By thermomate 124 Reviews Show More Product Highlights ?【INSTANT, ENDLESS & ENERGY SAVING】- Thermomate gas water heater instantly delivers 5L/MIN hot water at 25 ℃ temperature rise, with 0.17 bar low water pressure startup. This tankless heater heats the requisite amount of water directly from the source thus giving you an endless supply of hot water on demand. No water is on standby, thus a lot of energy expenses can be saved. ?【EASY TO INSTALL & FRIENDLY USE】 - With compact and lightweight design, Thermomate portable water heater requires very little installation space, which is best meant for outdoor areas and recreational purposes. The gas shower is powered by 2 "D" size batteries, which is great to off grid or other areas where electricity is not available. Drain plug is employed to protect the gas shower from being frozen in cold areas or in case of no use for long time. ?【OXYGEN DEPLETION SHUTOFF MECHANISM】- The tankless gas water heater is equipped with double thermocouple whereby it automatically shuts off in the event of low oxygen level to reduce the risk of gas leakage, which makes it more sensitive to detect the insufficient oxygen than most of gas shower with single thermocouple in the market, enhancing your family safety. ?【OXYGEN-FREE PURE COPPER HEAT EXCHANGER】- Thermomate propane gas water heater employs a durable pure copper heat exchanger and stainless steel burner, ensuring high thermal conductivity and long lifespan. With copper ion in water, bacterial growth is effectively inhibited, which makes the hot water more hygienic and purer, caring for your family's health. ?【PLEASE NOTE】- Please verify that this AZ132 model is the right size for your hot water needs before purchasing and installation. This 5L gas shower runs propane gas only. The gas inlet, water inlet and water outlet connectors are G1/2'' standard thread. Additionally required accessories (NOT INCLUDED): gas regulator and hose, shower head and hose, inlet water hose.	9.3 SCORE	Check Price
6^th	FORAVER 10L Propane Liquefied Petroleum Gas Water Heater 20KW 2.7GPM Outdoor Portable Tank... By FORAVER 124 Reviews Show More Product Highlights Use Gas Type: Liquefied Petroleum Gas (LPG); Heat Output Power: 20 KW; Gas Pressure(LPG): 2800 Pa; Hot Water Output: 10 L/min / 2.7 GPM; Rubber Gas Hose(Outer diameter): 20 mm / 0.79"; Suitable Water Pressure: 0.02 MPa - 0.8 MPa; Starting Pressure: 0.015 MPa Our hot water heater features instant, without waiting, and the smaller footprint can save a lot of space. You get instant, endless hot water wherever you are! Safety, the gas water heater to achieve heat and heat separation, bathed in the bathroom, installed in the kitchen, to avoid the risk of leakage during the bathing process. Energy Saving - The heater exchanger and main burner adopt mostly advanced energy-saving and combustion technology to decrease gas consumption and burning noise. Controller design, over heat protection. Both cold water and warm water can be properly controlled. Over 75 °C will automatically turn off.	9.4 SCORE	Check Price
7^th	Camplux BW422 16L Tankless Propane Gas Hot Water Heater Portable Instant Camping Gas Showe... By CAMPLUX ENJOY OUTDOOR LIFE 124 Reviews Show More Product Highlights ➤ ON DEMAND HOT WATER, ENJOY SHOWER - Camplux BW422 gas water heater provides 16L/MIN of hot water, endless hot water supply for 2 outlets wherever you are. With 0.3 bar start up, it is great for campsite, RV, etc.. The gas shower works greatly on modified water systems with a 12 volt water pump. Maximum output of the instant hot water heater is 32kW. ➤ SAVING ENERGY & MONEY - The 16L gas shower features FULL/ECO mode for hot shower with 11.5% energy saving, higher temperature raise at same cost of gas due to energy saving technology. The propane water heater exchanger and main burner are designed with advanced combustion technology to decrease gas consumption and burning noise. You will save a lot of money when you use our tankless water heater. ➤ MULTIPLE PROTECTION - Flame failure protection, overheat protection, oxygen depletion safety shutoff protection to ensure your family safety. Drain plug is applied to drain off the entire water content when it is not used for so long or outside temperature is near or below 0℃, prolonging its service life. ➤ EASY TO INSTALL & USE - Compact and lightweight design for easy carrying whenever you go for camping tours in remote areas. You can mount it with the provided installation kits, on the trailer, RV, caravan and even a trolley. The portable waster heater is ignited by 2 "D" size batteries, thus it can be used as a backup in such areas where there is no electricity supply. ➤ MULTIPLE APPLICATIONS - Elegant design and sturdy structure, perfect for domestic hot shower, garden gas shower and horse shower in farm. A fuel pipe is needed to be connected additionally if the LPG water heater is installed inside where is well ventilated (flue pipe not included).	9.5 SCORE	Check Price
8^th	Camplux BW158C CE Certified GAR Standard Tankless Gas Water Heater with Rain Cap, 6L Outdo... By CAMPLUX ENJOY OUTDOOR LIFE 124 Reviews Show More Product Highlights ➤ ON DEMAND HOT WATER, SAVING ENERGY- Camplux BW158C gas water heater is capable of delivering 6L/min of endless hot water at the flick of a switch anywhere. Only heats the water up for actually use. With 0.25 bar startup, it is great for campersite, RV with low water pressure. Energy class: A+. ➤ CE CERTIFIED GAR STANDARD- The 6L gas water heater complies with CE certified GAR standard throughout EU market, which features multiple protection configurations, such as flame failure protection, overheat protection, 20-min safety shutoff protection, enhancing your family safety. ➤ WEATHERPROOF RAIN CAP- Equipped with a rain cap, it is easily installed outdoor without worries that the rain runs down inside, as well as leaves, insects and other hazards, prolonging its lifespan. Ignited by 2-D cell batteries, it is great for off grid areas. ➤ EASY TO INSTALL & OPERATE - The gas shower is small and light weighted, ideal for carrying everywhere you go. You can mount it with the provided installation kits, on the trailer, RV, caravan and even a trolley. LED temperature display will show you the exact outlet hot water temperature, useful for setting your shower temperature and safely washing your horses, pets. ➤ PLEASE NOTICE - We provide a 37mbar CE approved gas regulator for quick installation to the propane gas cylinder. Please be aware before purchasing that the provided gas regulator is only compatible with the propane gas cylinder with 27mm clip-on connection.	9.6 SCORE	Check Price
9^th	BuoQua LPG Water Heater 8L Propane Gas Water Heater Boiler Water Heater Tankless Instant w... By BuoQua 124 Reviews Show More Product Highlights Water Heater Gas Type: LPG Liquid Petroleum Gas (Propane), Capacity: 8L / min (2.1Gal) Water Heater Temperature Rise: 25 ℃, minimum working water pressure: 0.02MPa Water Heater electronic heater thermal input: 16KW Thermal efficiency: ≥80.8% Temperature rise: 25 ℃ Liquid propane gas water heater automatic ignition system; Anti-freezing protection function Propane tankless water heater must be used under the condition of ventilation, ensuring the normal condition of the flue kit	9.7 SCORE	Check Price
10^th	Ridgeyard 8L LPG Propane Gas Tankless Instant Hot Water Heater with Shower Head By Ridgeyard 124 Reviews Show More Product Highlights Gas Pressure: LPG:2800Pa Water Connection Pipe Spec: Water Inlet: G1/2" Pipe; Water Outlet: G1/2" Pipe; Gas lnlet:G1/2" Pipe; Energy efficiency: 84%-87% Suitble Water Pressure: Min.0.02MPa.Max.0.8MPa, Starting Pressure: 0.015MPa-0.02MPa Heating Status: Heating time <=15 Seconds; Over Temperature <=2"C; Stability Time:<=15 Seconds	8.9 SCORE	Check Price

1^st

FORAVER 18L LPG Water Heater 4.8GPM Propane Gas Tankless Stainless Instant Boiler 36KW Liq...

9.8
124 Reviews

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Product Highlights
Product: 18L Gas Water Heater; Water heater Type: Tankless; Heat Output Power: 36 KW; Gas Pressure(LPG): 2800 Pa
Hot Water Output: 18 L/min (4.8 GPM); Use Gas Type: Liquefied Petroleum Gas (LPG); Rubber Gas Hose(Outer diameter): 20 mm (0.79 inch)
Modern fashionable line shape designed, magnificent thin-shaped appearance; High efficient energy saving; Low water-pressure start up
Manifold auto protection, Lon flame inspection; Controller design, over heat protection; Over water pressure protection function, anti-freezing protection function.
Every type of water heater is only suitable for one kind of gas. This 18L water heater is ONLY for Liquefied Petroleum Gas (Propane).
2^nd

Cointra Optima COB-10p Propane Gas Water Heater, 10 litres per Minute, 17.8 kW

9.0
124 Reviews

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Product Highlights
Tankless water heater, very small dimensions, two year warranty!
No pilotflame
Propane or butane gas waterheater
RV, cabin, lodge, or just at your home
English manual
3^rd

Camplux AY132 Tankless Propane Gas Water Heater White 5L

9.1
124 Reviews

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Product Highlights
➤LOW WATER PRESSURE STARTUP- Camplux AY132 gas water heater provides 5L/MIN of endless hot water once the tap is turned on. With 0.17 bar start up, it is great for campersite, RV with low water pressure. You can enjoy outdoor shower, bath your horses, wash your pets with this portable camping gas shower.
➤SAVING ENERGY & MONEY- The 5L gas shower employs energy saving technology, higher temperature raise at same cost of gas. Unlike the storage water heater, this tankless water heater only heats the water in amount for you need. No need to be preheated, thus eliminating the waiting time for hot water.
➤MULTIPLE PROTECTION- Flame failure protection, overheat protection, oxygen depletion safety shutoff protection to ensure your family safety. Drain plug is applied to drain off the entire water content when it is not used for so long or outside temperature is near or below 0℃, prolonging its service life.
➤EASY TO INSTALL & USE- The portable water heater is equipped with a folding handle for easy carrying whenever you go for camping tours in remote areas. You can directly hang it with the handle or mount it with the provided installation kits, on the trailer, RV, caravan and even a trolley. It is ignited by 2 "D" size batteries, thus it can be used as a backup in such areas where there is no electricity supply.
➤PLEASE NOTICE - We provide a 37mbar CE approved gas regulator (in red) for quick installation to the propane gas cylinder. Please be aware that the gas regulator provided is only compatible with the propane gas bottle with 27mm clip on connection. If your cylinder cannot meet this standard, another gas regulator is needed.
4^th

Hopopular Portable Tankless Water Heater 18L LPG Gas Propane Water Heater Tankless Instant...

9.2
124 Reviews

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Product Highlights
Propane water heater tankless gas type: LPG Liquid Petroleum Gas (Propane),Capacity: 18L/min (4.8Gal)
Propane water heater temperature rise: 25℃,Minimum working water pressure: 0.02MPa,Gas pressure: 2800Pa
Propane hot water heater thermal input: 36KW Thermal efficiency: ≥80.8% Temperature rise: 25℃
Liquid propane gas water heater automatic ignition system;Flame failure protection device;Anti-freezing protection function
Propane tankless water heater must be used under the condition of ventilation,ensuring the normal condition of the flue kit
5^th

Gas Water Heater, Thermomate AZ132 5L Outdoor Portable Water Heater, Instant Propane Gas S...

9.3
124 Reviews

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Product Highlights
?【INSTANT, ENDLESS & ENERGY SAVING】- Thermomate gas water heater instantly delivers 5L/MIN hot water at 25 ℃ temperature rise, with 0.17 bar low water pressure startup. This tankless heater heats the requisite amount of water directly from the source thus giving you an endless supply of hot water on demand. No water is on standby, thus a lot of energy expenses can be saved.
?【EASY TO INSTALL & FRIENDLY USE】 - With compact and lightweight design, Thermomate portable water heater requires very little installation space, which is best meant for outdoor areas and recreational purposes. The gas shower is powered by 2 "D" size batteries, which is great to off grid or other areas where electricity is not available. Drain plug is employed to protect the gas shower from being frozen in cold areas or in case of no use for long time.
?【OXYGEN DEPLETION SHUTOFF MECHANISM】- The tankless gas water heater is equipped with double thermocouple whereby it automatically shuts off in the event of low oxygen level to reduce the risk of gas leakage, which makes it more sensitive to detect the insufficient oxygen than most of gas shower with single thermocouple in the market, enhancing your family safety.
?【OXYGEN-FREE PURE COPPER HEAT EXCHANGER】- Thermomate propane gas water heater employs a durable pure copper heat exchanger and stainless steel burner, ensuring high thermal conductivity and long lifespan. With copper ion in water, bacterial growth is effectively inhibited, which makes the hot water more hygienic and purer, caring for your family's health.
?【PLEASE NOTE】- Please verify that this AZ132 model is the right size for your hot water needs before purchasing and installation. This 5L gas shower runs propane gas only. The gas inlet, water inlet and water outlet connectors are G1/2'' standard thread. Additionally required accessories (NOT INCLUDED): gas regulator and hose, shower head and hose, inlet water hose.
6^th

FORAVER 10L Propane Liquefied Petroleum Gas Water Heater 20KW 2.7GPM Outdoor Portable Tank...

9.4
124 Reviews

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Product Highlights
Use Gas Type: Liquefied Petroleum Gas (LPG); Heat Output Power: 20 KW; Gas Pressure(LPG): 2800 Pa; Hot Water Output: 10 L/min / 2.7 GPM; Rubber Gas Hose(Outer diameter): 20 mm / 0.79"; Suitable Water Pressure: 0.02 MPa - 0.8 MPa; Starting Pressure: 0.015 MPa
Our hot water heater features instant, without waiting, and the smaller footprint can save a lot of space. You get instant, endless hot water wherever you are!
Safety, the gas water heater to achieve heat and heat separation, bathed in the bathroom, installed in the kitchen, to avoid the risk of leakage during the bathing process.
Energy Saving - The heater exchanger and main burner adopt mostly advanced energy-saving and combustion technology to decrease gas consumption and burning noise.
Controller design, over heat protection. Both cold water and warm water can be properly controlled. Over 75 °C will automatically turn off.
7^th

Camplux BW422 16L Tankless Propane Gas Hot Water Heater Portable Instant Camping Gas Showe...

9.5
124 Reviews

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Product Highlights
➤ ON DEMAND HOT WATER, ENJOY SHOWER - Camplux BW422 gas water heater provides 16L/MIN of hot water, endless hot water supply for 2 outlets wherever you are. With 0.3 bar start up, it is great for campsite, RV, etc.. The gas shower works greatly on modified water systems with a 12 volt water pump. Maximum output of the instant hot water heater is 32kW.
➤ SAVING ENERGY & MONEY - The 16L gas shower features FULL/ECO mode for hot shower with 11.5% energy saving, higher temperature raise at same cost of gas due to energy saving technology. The propane water heater exchanger and main burner are designed with advanced combustion technology to decrease gas consumption and burning noise. You will save a lot of money when you use our tankless water heater.
➤ MULTIPLE PROTECTION - Flame failure protection, overheat protection, oxygen depletion safety shutoff protection to ensure your family safety. Drain plug is applied to drain off the entire water content when it is not used for so long or outside temperature is near or below 0℃, prolonging its service life.
➤ EASY TO INSTALL & USE - Compact and lightweight design for easy carrying whenever you go for camping tours in remote areas. You can mount it with the provided installation kits, on the trailer, RV, caravan and even a trolley. The portable waster heater is ignited by 2 "D" size batteries, thus it can be used as a backup in such areas where there is no electricity supply.
➤ MULTIPLE APPLICATIONS - Elegant design and sturdy structure, perfect for domestic hot shower, garden gas shower and horse shower in farm. A fuel pipe is needed to be connected additionally if the LPG water heater is installed inside where is well ventilated (flue pipe not included).
8^th

Camplux BW158C CE Certified GAR Standard Tankless Gas Water Heater with Rain Cap, 6L Outdo...

9.6
124 Reviews

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Product Highlights
➤ ON DEMAND HOT WATER, SAVING ENERGY- Camplux BW158C gas water heater is capable of delivering 6L/min of endless hot water at the flick of a switch anywhere. Only heats the water up for actually use. With 0.25 bar startup, it is great for campersite, RV with low water pressure. Energy class: A+.
➤ CE CERTIFIED GAR STANDARD- The 6L gas water heater complies with CE certified GAR standard throughout EU market, which features multiple protection configurations, such as flame failure protection, overheat protection, 20-min safety shutoff protection, enhancing your family safety.
➤ WEATHERPROOF RAIN CAP- Equipped with a rain cap, it is easily installed outdoor without worries that the rain runs down inside, as well as leaves, insects and other hazards, prolonging its lifespan. Ignited by 2-D cell batteries, it is great for off grid areas.
➤ EASY TO INSTALL & OPERATE - The gas shower is small and light weighted, ideal for carrying everywhere you go. You can mount it with the provided installation kits, on the trailer, RV, caravan and even a trolley. LED temperature display will show you the exact outlet hot water temperature, useful for setting your shower temperature and safely washing your horses, pets.
➤ PLEASE NOTICE - We provide a 37mbar CE approved gas regulator for quick installation to the propane gas cylinder. Please be aware before purchasing that the provided gas regulator is only compatible with the propane gas cylinder with 27mm clip-on connection.
9^th

BuoQua LPG Water Heater 8L Propane Gas Water Heater Boiler Water Heater Tankless Instant w...

9.7
124 Reviews

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Product Highlights
Water Heater Gas Type: LPG Liquid Petroleum Gas (Propane), Capacity: 8L / min (2.1Gal)
Water Heater Temperature Rise: 25 ℃, minimum working water pressure: 0.02MPa
Water Heater electronic heater thermal input: 16KW Thermal efficiency: ≥80.8% Temperature rise: 25 ℃
Liquid propane gas water heater automatic ignition system; Anti-freezing protection function
Propane tankless water heater must be used under the condition of ventilation, ensuring the normal condition of the flue kit
10^th

Ridgeyard 8L LPG Propane Gas Tankless Instant Hot Water Heater with Shower Head

8.9
124 Reviews

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Product Highlights
Gas Pressure: LPG:2800Pa
Water Connection Pipe Spec: Water Inlet: G1/2" Pipe; Water Outlet: G1/2" Pipe; Gas lnlet:G1/2" Pipe;
Energy efficiency: 84%-87%
Suitble Water Pressure: Min.0.02MPa.Max.0.8MPa, Starting Pressure: 0.015MPa-0.02MPa
Heating Status: Heating time <=15 Seconds; Over Temperature <=2"C; Stability Time:<=15 Seconds

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