Cheapest way to heat a garage

by Sam Wood | Last Updated: 27/10/2020

With the cold days coming in fast, you may well be thinking of the best way to heat your garage, but we are all on budget arent we. So what is the cheapest way to heat a garage that also works? After all, a cheap way that doesn’t work isn’t really cheap at all now is it. 

Three Choices

You have three different choices for efficient garage heating, an electric tube heater, a gas space heater or an electric infrared heater. Each of these options has different pros and cons which I will dive into deeper below.

Tube Heater

Very Efficient
Low Energy Tubular Heater 4ft
£39.99
  • Built in thermostat
  • 4ft (1323mm total length) - (w) x 81mm(h) x 80mm Weight: 1kg
  • DPD delivery with a 1 hour time slot
  • Ambient temperature technology - Splash proof
  • Switched on/off automatically


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09/23/2021 04:36 pm GMT

A tube heater is a very efficient way of heating up any space. They are electrically powered but have low energy usage when compared with other electric heaters.

This 160W Tubular Heater will provide a safe, low level of heat output, as it has been designed for continuous operation, and has the ability to reach normal operating temperatures within a few minutes after the appliance is switched on. Based on the surrounding environment and ambient temperature, the heater may periodically cycle its heat output, to ensure the maximum permitted surface temperature is not exceeded.

The cost to run

So using the nifty energy calculator we have created, and the average UK cost electricity cost of 14.37 pence per kWh the costs to run this tube heater for a 30 day month comes to £16.55

This is calculated with the tube heater running 24/7.

Compare this to a 2000W fan heater which would cost £206.93 when run for the same time!

Gas Space Heater

Gas Space Heater
Sealey LP41 Space Warmer Propane Heater
  • 40,500Btu/hr(11.5kW) (Propane).
  • Features safety solenoid preventing the unit from leaking gas without first being electrically started.
  • Fan assisted, fitted with a piezoelectric ignition system for trouble-free starting and features a direct gas head assembly.


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This space heater from Sealey really blasts out some heat. It connects to a propane tank but also needs electrical power for the fan and ignition system.

Lighting the Sealey gas space heater is really simple thanks to the piezo ignition. Simply turn the gas on, push the gas button and hit the ignition button, job done!

The cost to run

While you may initially scoff at the idea of a gas heater and think it will be extortionate to run, you may well be shocked.

The Cylinder

On your first bottle, you will have to pay for the cylinder, but this is a one-off cost. Looking at Flogas for an 11kg propane gas cylinder with a screw fitting this charge will be £30.62.

After paying for the cylinder, each refill will only cost £33.35 for an 11kg cylinder.

How long will it last?

Running off an 11kg cylinder, the heater will run for approximately 12-15 hours depending on how high you set the heater.

This equates to a running cost of £2.78 to £2.22 per hour. While this sounds really expensive at first, you have to bear in mind the heat output. This heater will heat a garage quick, meaning you may only need to switch it on once in the morning and run for 30 minutes. Whereas with many electric heaters, you will need to run them almost continuously.

Infrared Heater

Infrared Heater
Byecold Infrared Heater with Built-in Thermostat 700
£150.00
  • Built-in Temperature Receiver - equipped with a remote control that allows you to adjust the temperature of the panel, and to set different timers.
  • Eco-friendly and Energy Saving - 50% cheaper compared to other heating systems.
  • Fantastic Space Heater - With such a slimline panel heater, you don’t have to worry about it taking up too much room, Mounting kits also included, easy to install.


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09/23/2021 04:34 pm GMT

These infrared heaters are a lot more energy-efficient than a regular electric fan heater. They work almost like a radiator, the whole panel heats up then radiates this heat out. It has no fan or anything to blast the heat out.

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Wood by name, wood by nature. I am a fully qualified, time-served, award-winning joiner with an NVQ Level 3 in Carpentry and Joinery as well as an HNC in Construction. Beyond my joinery qualifications, I have also earned a degree in building surveying. I believe these qualifications make me perfectly positioned to provide expert advice on many different areas of DIY as well as share all of the tips I have picked up in over a decade working on building sites!