Disability or chronic illness and the impacts of heat.

A new survey reveals people with disability or chronic illness and First Nations people are feeling the affects more than others due to hot homes.

The Australian Council of Social Service says its survey of over two thousand people shows 75 per cent of respondents struggle to cool their homes. That's up almost 20 per cent since last year.

Nine in ten say their homes got too hot in summer - many reporting they have to choose between food and medicine to pay energy bills.

ACOSS is calling on Governments to commit to upgrading all social housing by 2031 with a priority on First Nations housing.