Philip Sellwood, chief executive of the EST, said: "We are calling for responsible retailers to re-consider the sale of patio heaters in light of the substantial amount of carbon emissions they produce. Why don't people just wear a jumper?"
The group also criticised the growing use of patio heaters by pubs and restaurants, a trend expected to increase following the smoking ban in public places that came into effect in England at the start of July. It said nearly 60,000 pubs, 25,000 restaurants and many bars and hotels now owned heaters.
At least year, the EST's worries may be somewhat overstated. A new survey from insurance provider Legal & General revealed 67 per cent of households do not plan to buy anything for their garden this year because of all the wet weather.
Click here to run an energy price comparison, and see if you could be paying less for your gas and electricity.