Simon Jenkins, who runs GFP Home Heating Care, in Victoria Road, said people are leaving it until they need their fire or boiler before checking it is safe.

He said chimneys blocked by birds' nests and faulty equipment could cause deadly carbon monoxide to escape into people's homes.

It would also have the effect of making fires and boilers less efficient.

Simon said: "It may seem crazy, but this is really the best time to have your chimney checked for blockages and servicing on your heating and hot water appliances carried out.

"Only a tiny amount of carbon monoxide escaping into your home can be deadly.

"Everybody leaves these things until the start of the winter or, even worse, they don't do it at all.

"We want people to avoid the winter rush and get gas safe this summer.

"Ensuring your chimney and gas equipment is safe and efficient can save you money and even save your life."

Simon is holding advice sessions in the Brunswick Centre this week and in August and is offering a buy now, pay in October offer.

For more information call 377777 or 0800 0264244.