The Co-operative Bank is launching a range of green fixed rate mortgages.
As part of its new range the bank is offering customers a free home energy report with their property valuation, which assesses the energy efficiency of the property and identifies ways in which it can be improved.
In addition, for the duration of the mortgage, the Co-operative Bank makes an annual donation to climate care to help tackle global warming.
The bank says houses are one of the largest sources of carbon dioxide emissions in the UK and, by using the banks annual donation, climate care will be able to offset around one quarter of an average homes carbon dioxide emissions each year for the lifetime of the mortgage.
John Barker, head of mortgages at the Co-operative Bank, says: With the current climate of uncertainty surrounding base rate changes, these new products offer customers an excellent rate and peace of mind that their rate will remain fixed at this level for the initial period of the loan.