Let’s face it—British weather can be incredibly unpredictable. From misty mornings in the Lake District to breezy afternoons along the Cornish coast, getting access to hot water while camping or exploring outdoors can be a real challenge.But what if you could enjoy a warm shower anytime, anywhere—no matter how cold or damp it gets?
That’s where the Thermomate Portable Gas Water Heater comes in. Designed to tackle the UK's ever-changing weather, it’s a compact, high-performance outdoor hot water solution that ensures you stay comfortable wherever your adventure takes you.
Low Water Pressure Startup – Perfect for UK Outdoor Settings
Low water pressure is a common issue at campsites and off-grid locations across the UK. Thermomate was built with this in mind, featuring a 0.25 bar low-pressure ignition system that delivers 5 litres of hot water per minute. The water temperature can increase by up to 25°C—ideal for outdoor showers, rinsing off muddy gear, or washing your boots after a long hike.
Energy Efficient – Up to 11.5% More Efficient Than Standard Units
At the heart of the unit lies an advanced accordion-style triple-row burner that maximizes gas efficiency. Only the water you need gets heated, and the tankless, on-demand design reduces gas usage by up to 11.5%, saving you money and reducing environmental impact.
Multiple Safety Protections – Built for British Winters
Whether you’re camping in early spring or storing the unit in a cabin over the off-season, Thermomate includes built-in anti-freeze protection. It automatically drains residual water to prevent freezing damage.
Plus, it features flame-out protection and overheat protection, shutting off gas supply if the flame is accidentally extinguished or the water temperature exceeds 80°C—giving you total peace of mind with every use.
Compact & Travel-Ready – Your Ideal Camping Companion
Weighing only 4.5 kg and measuring just 34 x 29.5 x 12 cm, this LPG portable water heater is ideal for:
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Camping in the Scottish Highlands
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Warming up after a swim in the Lake District
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Cleaning muddy pets after a countryside walk
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Filling an outdoor bathtub with hot water
How to Install the Thermomate Portable Water Heater?
What’s Included (All in the Box)
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Thermomate heater unit
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Shower head with hose
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Gas regulator & hose (for LPG propane tank)
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Wall hook or mounting screws
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2 x D-cell batteries (1.5V for ignition)
Step 1: Choose an Installation Location
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Install in a well-ventilated outdoor area; never inside tents or enclosed spaces.
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Ideally, place under a sheltered but airy spot, such as under a canopy, next to a caravan, or at an open campsite.
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Mount at least 50 cm above the ground to avoid puddles or mud.
Step 2: Connect the Gas Line
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Attach the included gas regulator securely to your LPG propane tank.
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Connect the other end of the gas hose to the GAS inlet on the bottom of the heater.
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Check for leaks using soapy water—never use a flame.
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Keep the gas valve closed until you're ready to use the unit.
Step 3: Connect Water Inlet & Shower Hose
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Connect the INLET to a standard tap or portable water pump.
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Connect the OUTLET to the included shower hose.
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Tighten all connections to ensure no leakage.
Step 4: Install Batteries
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Open the battery compartment at the bottom of the unit.
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Insert 2 D-cell (1.5V) batteries, ensuring correct polarity.
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These batteries power the ignition—no electricity required.
Step 5: Start Using
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Turn on your water source (tap or pump) to ensure steady flow.
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Open the gas valve.
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Turn on the showerhead—the unit will auto-ignite.
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Adjust temperature using the dials:
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Left/right for gas intensity
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Up/down for water flow
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Important Safety Notes
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Do not use in heavy rain—install in a sheltered location.
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Always turn off the gas valve after use.
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Before winter storage, drain all water to avoid freezing damage.
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Never use indoors or in enclosed vehicles (risk of carbon monoxide buildup).
Installation Video Tutorial
We recommend following along with our video guide for first-time setup (link to be added).
Why Thermomate is the UK Camper’s Go-To Hot Water Heater?
Whether you’re exploring the Yorkshire Dales or spending the weekend off-grid in the Welsh countryside, the Thermomate Outdoor Gas Water Heater offers unbeatable performance, safety, and ease of use.
Say goodbye to freezing outdoor showers and hello to reliable, on-demand hot water—engineered for the British climate.