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How many patio heaters will I need to heat my area? How do I calculate what's needed?

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How many patio heaters will I need to heat my area? How do I calculate what's needed?

The easiest answer to that question is to give us a call and tell us the area you are looking to heat, describe it to us or send us some photos and we can give you the answer to your questions.

This is the formula that we would use to calculate it and you can apply the exact same logic yourself at home or in any kind of business setting or environment:

As the video demonstration explains heat is subjective and the shape of the area to heat is an important factor. However as a general rule 1kW of heat output heats an area of up to 3 square meters. Indoors this can increase to 4 square meters

We generally recommend a 2kW heater for a 4sqm area and a 3kW heater for a 10sqm area.

Video How many patio heaters will I need to heat my area
Shadow 3kW & 4kW Ultra Low Glare Patio Heater
Shadow 3kW & 4kW Ultra Low Glare Patio Heater
From £423.49 + VAT
more info
  • Long life Ultra Low Glare infrared lamps
  • Special reflector with scientific parabolic system for top efficiency
  • Safety guard
  • Heater body in solid black or silver anodised aluminium
  • Waterproof heater IP65 rated
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Shadow XT 2kW Bluetooth Ultra Low Glare Patio Heater
Shadow XT 2kW Bluetooth Ultra Low Glare Patio Heater
£329.99 + VAT
more info
  • Variable heat control from integrated switch, remote handset or Bluetooth (Apple device)
  • Long life exclusive Ultra Low Glare infrared lamp
  • Scientifically designed double parabolic reflector for massive efficiency and power
  • EasyFit fast lamp changing system
  • Heater body in solid silver anodised aluminium
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Shadow Fatboy 2.4kW Mega Heat Electric Patio Heater
Shadow Fatboy 2.4kW Mega Heat Electric Patio Heater
From £250.05 + VAT
more info
  • Large Parabolic Reflector to focus the heat
  • Powerful 2.4kW of Heat Output
  • Remote Control Option Available
  • Wall and Stand Mountable
  • Hottest Heater within the 2kW range
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Shadow II 1.5kW & 2kW ULG+ Electric Patio Heater
Shadow II 1.5kW & 2kW ULG+ Electric Patio Heater
From £307.99 + VAT
more info
  • Ultra Low Glare Plus Technology
  • Slimline Design
  • Inbuilt Variable Remote Control Option
  • Vertical Mounting Compatible
  • Also available in a 3.0kW size
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