West Lancashire MP Rosie Cooper is urging residents to access the independent Home Heat Helpline.
New research the helpline shows 600 households - 14 per cent of the housing stock in West Lancashire - are eligible for help to keep their home warm this winter.
Homes that may qualify include all those living in certain deprived areas as well as low income pensioners, disadvantaged families with children or those with a disability that live in a rural area.
Rosie Cooper said: “Many people may not know where to turn for free advice on keeping their homes warm.
“One of the best ways for people in West Lancashire to stay warm this winter is to act now, and call the Home Heat Helpline on 0800 33 66 99 to see if they’re eligible for help.”
Lawrence Slade, chief operating officer at Home Heat Helpline said: “The research speaks for itself – an astounding 3.2 million households in Britain are entitled to home heating help.
“As we’re now in winter, we are urging people to make a free, confidential call to the Home Heat Helpline.”
Last year, 98 per cent of eligible households may have missed out on free advice and support because they did not call the independent Helpline.
The British Energy Aid Report, carried out by the New Policy Institute on behalf of Home Heat Helpline, showed that one in eight homes across Great Britain is entitled to relief – a total of 3.2 million households.
In Great Britain, 2.2 million households qualify for support with cavity wall insulation, 1.3 million for loft insulation and 200,000 for solid-wall insulation.
Nearly 200,000 eligible households live in properties with external walls that failed the home decision test due to thermal comfort because of a lack of insulation.
The helpline is free to call and is open 9am-5.30pm Monday to Fridays.