Whether you're camping in the Lake District or setting up a glamping retreat in your back garden, a portable gas water heater can bring you the luxury of hot water wherever you go. However, when it comes to gas and outdoor appliances in the UK, safety and proper installation are essential.
Here’s a detailed installation guide specifically for UK users to help you use your unit safely and legally.
Tools & Equipment You'll Need:
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A portable LPG (liquefied petroleum gas) water heater (e.g. ThermoMate 5L or 16L)
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A UK-standard propane regulator (37mbar)
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A high-quality LPG hose (preferably BS EN 16436 certified)
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A Calor Gas propane cylinder or equivalent (11kg or 6kg recommended)
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Hose clamps or quick connectors
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A water source (e.g. garden hose or water tank with pump)
*The ThermoMate AZ132 portable gas water heater comes with a shower head, gas regulator, installation kit, and hose—making it much easier for users to set up and start using.
Installation Steps
1. Choose a Safe Location
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The water heater must only be used outdoors. Never install it inside tents, sheds, or any enclosed space.
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Keep at least 1 metre of clearance from walls, windows, or any flammable materials.
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Mount the heater at a convenient height for operation and water access.
2. Connect the Water Inlet
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Attach your cold water source to the "Water Inlet" on the heater.
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A standard ½-inch garden hose adapter usually fits.
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Ensure a tight seal to avoid leaks.
3. Connect the Gas Supply
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Connect the LPG hose between the heater and gas bottle, using a 37mbar regulator.
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Secure all connections with hose clamps or quick connectors.
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Inspect the hose for wear or damage before each use.
4. Check for Gas Leaks
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Slowly open the gas valve on the bottle.
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Spray soapy water on all gas connections—bubbles indicate a leak. If found, tighten the fittings or replace the hose.
5. Attach the Shower Hose
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Connect the included shower hose to the water outlet.
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Use plumber’s (PTFE) tape for additional sealing if necessary.
6. Insert Batteries (If Required)
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For models with battery ignition, insert 2x D-cell batteries.
7. Test the Unit
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Turn on the water supply first, then open the gas valve slowly.
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Adjust the water flow and flame intensity via the control panel.
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You should get hot water within a few seconds.
UK-Specific Safety Tips
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Never use the heater indoors, including inside caravans, awnings, or tents. This poses a serious carbon monoxide risk.
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Always use in a well-ventilated outdoor space.
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Never leave the heater unattended during use.
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For use in semi-enclosed areas, install a carbon monoxide detector nearby.
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Store the gas bottle upright and away from heat sources.
Frequently Asked Questions
Q: Can I use butane instead of propane?
A: Not recommended. Butane doesn’t vaporize well in cold UK temperatures, which may cause poor water pressure or ignition issues. Propane is always the better choice in the UK.
Q: Are these types of heaters legal in the UK?
A: Yes—as long as they are used outdoors and in accordance with safety regulations. For permanent installations, you must follow Gas Safe guidelines.
Recommended Models
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ThermoMate 5L Outdoor Portable Water Heater – Lightweight, ideal for individuals or small family camping.
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ThermoMate 16L Water Heater – More powerful, suitable for off-grid cabins or larger groups.
Final Thoughts
The ThermoMate Portable Gas Water Heater brings added comfort to your outdoor adventures, but safety always comes first. By using UK-compliant accessories and following the correct installation steps, you can enjoy hot water wherever your journey takes you.