At 13.5KW the heat output from the pyramid heater is superb. Perfect for covering a wide area and heating up large groups of people. Whether it's in a pub beer garden or on your patio for a party or gathering, The weatherproof cover is a great addition to the piece. Allowing you to leave it outside all year round, whatever the weather. Easy to put on and equally as easy to take off when you're using the heater. The built-in anti-tilt switch gives you peace of mind when using the gas patio heater. If the unpredictable British weather causes the heater to fall over the flame will immediately cut out.