replace a boiler any assistance available

hi not sure if its okay to ask for help with this here ,so feel free to delete if required

i heard there's a scheme for a free replacement boiler available ,but had no luck finding it

tried google but just seem to find what turn out to be adverts and end up filling "do i qualify" online forms only to end up confused and frustrated

any help appreciated

im 65 next month and receive esa in the support group and full pip ,have a blue badge and am on the vulnerable list with british gas ,my wife receives carers allowance for me

our boiler started leaking last thursday and despite me being on their "vulnerable"list it took them 3 visits over 3 days left without heating or hot water to get it working again

"o" rings and a manifold apparently

the gas guy told me the boiler ,its a ideal combi about 12 years old is
1 a rubbish unit
2 on its way out
3 and is unlikely to last and wont survive taking apart to repair if it goes wrong again

so im not filled with confidence over hearing this and as ive been paying british gas £26 a month home care and had no one over the door in the last 4 years ,and they now tell me it won't be repairable next time ,

i dont feel ive had either good service or good value so am looking at finding a replacement boiler for when or before it packs in again ,and if i qualify for any assistance

if some kind soul could point me in the right direction id be most grateful

thanks to all or any that can help

There is also
www.disability-grants.org/
and
www.turn2us.org.uk/.