Have a word with your IP to see if you can have a payment break to fund your new boiler.
Sharing from experiences of dealing with debt
The greatness of a man is not in how much wealth he acquires, but in his integrity and his ability to affect those around him positively.
Bob Marley. http://kallis3.blogs.iva.co.uk
I would establish the price of a new boiler and then approach your IP to seek their help in identifying ways to make this viable. A payment break maybe available.
There are some good options out there which may be suitable.
Sharing from experiences of dealing with debt
There is a solution for everyone .... Just need to stay positive !