And while many Scots can correctly identify technologies such as biomass boilers (26 per cent) and ground source heat pumps (17 per cent) as cheap ways to heat the home, nearly a fifth (18 per cent) say disruption during installation would put them off renewable heating.

The figures come as a result of a YouGov poll by the Energy Saving Trust Scotland, which is urging people to take a fresh look at renewable technology during a series of free open days across the country this weekend.

Energy Saving Trust Scotland director Mike Thornton said: “Our research shows people know renewable energy often offers the cheapest way to heat their home, but suggests many don’t know which system is the best solution. They also don’t realise how affordable renewables can be once savings and incentives are taken into account.

“In fact, not only can a renewable system cut your energy bills, it can actually generate cash for you. With help available for the initial costs through an interest-free loan from the Scottish Government, renewables have never been more appealing.”

On October 3 and 4, 40 green homes and 14 businesses across Scotland are taking part in the Energy Saving Trust’s Green Network open days, demonstrating how renewable technology works in practice.

Mike said: “Our Green Network open days are a great way to see how renewables systems work in real homes and businesses across the country. With many of the owners on hand to talk about their systems and energy efficiency improvements, you can find out about their experience of installing and living with a renewable system, and what savings they are making.

“Talking to someone who has been through the process gives people an idea that installing a renewable system is not as disruptive as they may have thought and any short-term disruption is far outweighed by the financial and environmental benefits.

“Renewable specialists will also be available at the open day properties, providing you with information on which system could be right for your home.”

Mike added: “There are a number of incentives to make renewables an even more attractive option, such as the UK Government’s Renewable Heat Incentive and Feed-in-Tariff schemes.

“Both of these schemes pay you depending on how much energy you generate, with the rate fixed for years so you know exactly how much you’ll be paid. There is also an interest-free loan of up to £10,000, funded by the Scottish Government, which can provide financial support to help you take action now.

“Given the savings possible, we’re asking people to consider how much better off they would be by installing a renewable system to heat their homes.”

Estimates from the Energy Saving Trust Scotland suggest households could be better off by up to £3,400 per year by installing a biomass boiler, while an air-source system could result in £1,200 more for the annual budget.