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By Jordan Valentine-Dunn, Gas Safe registered engineer · 9 July 2026
Boiler breakdowns spike over the Christmas holidays, when the heating is working hardest, the weather is coldest, and engineers are hardest to reach. Landlords can cut the risk with a service and a few checks before the break; engineers can handle the rush by setting cover expectations and getting ahead of the customers most likely to call.
A no-heat call over Christmas is the most expensive and stressful kind, for the tenant and for you. The prevention is boring and it works: get the boiler serviced before the holidays, make sure any exposed condensate pipe is lagged, and check the tenant knows how to reach you or an emergency engineer, and how to reset the boiler for the simple stuff.
You can't stop the phone ringing over Christmas, but you can shape it. Decide in advance whether you're offering cover, and what you're charging for holiday call-outs, and say so clearly before the break. Reach out to your elderly and vulnerable customers early with a pre-winter check; they're the ones you least want stuck without heat and the ones most grateful for a call.
If a tenant or customer reports a smell of gas or a carbon monoxide alarm sounding, treat it as an emergency: fresh air, appliance off if safe, and call the gas emergency line. This is general guidance, not a substitute for a Gas Safe registered engineer.