Booking Ahead of the Ridge's First Cold Snap
The hardest-working boilers in the village are on the exposed properties along the ridge, where the wind takes heat off the walls faster than the radiators can put it back. Those boilers spend long stretches of the winter near full output, and a weak component tends to give out under exactly that strain.
That is the argument for servicing in the warmer months or early autumn rather than waiting for the first frost. A burner that needs cleaning, a fan starting to sound rough, pressure that keeps dropping: a service can pick these up while there is time to deal with them calmly, at one fixed price agreed beforehand, rather than on a freezing evening with the house cooling.
The post-war houses in the village sit a little more sheltered than the farmhouses on the top road, but the same logic holds. A boiler that has gone through one winter without attention goes into the next with a year's more wear on it, and the service is where that wear gets measured rather than guessed at. Booking at about the same time every year also keeps the dates tidy for warranty purposes, which is one less thing to keep track of.