We sold a house last year. This week, our conveyancing firm received a letter from the buyer's solicitors threatening to take us to court to recover cost for replacing the (oil) boiler for around £6k. Apparently, they've had trouble with the boiler, and their boiler engineer told them that it could only be this bad because we never serviced it. So the letter accuses us of lying on the forms we completed during the sale.
Boiler was new in 2016. Serviced annually. Five-year warranty expired a month after we sold. We passed all paperwork and service records over to the buyers when we sold, although I would guess that our conveyancer has digital copies.
Has anyone had this happen to them? What is this even about? And what should we do?