Boilers 6 min read12 May 2026

Boilers fail when they are worked hardest, which is why our busiest week of the year is always the first hard frost. Half of those call-outs across Glasgow, Coatbridge, Airdrie and Motherwell are avoidable with an hour's attention in autumn.
The autumn checklist
Run through this in October, before the heating goes on full time. Anything you cannot resolve is far cheaper to fix as a booked appointment than as a December emergency.
- Book the annual service — it also keeps the warranty valid
- Run the heating for an hour and check every radiator warms evenly
- Check boiler pressure is between 1 and 1.5 bar when cold
- Insulate the external condensate pipe against freezing
- Test the carbon monoxide alarm and replace it if over seven years old
- Exercise the stopcock so it will actually close in an emergency
Frozen condensate: the classic Scottish fault
If your boiler shuts down during a cold snap and shows a fault code with a gurgling noise, the external condensate pipe has frozen. Pouring warm — not boiling — water over the exposed section usually clears it. The permanent fix is re-routing the pipe internally or upsizing and lagging it, which we do across Glasgow and Lanarkshire.
Why servicing pays for itself
A serviced boiler burns less gas, is far less likely to fail mid-winter, and keeps its manufacturer warranty valid — most warranties are void without documented annual servicing. We service every major brand across Glasgow, Coatbridge, Airdrie, Motherwell, Hamilton and the wider Lanarkshire area, regardless of who installed the boiler.
Need help with this?
We handle this work every week. See Heating & Boiler Services in Glasgow or browse all our services.
Frequently asked questions
When should I book a boiler service?
Autumn is ideal — before the first cold snap, when appointment availability across Glasgow and Lanarkshire is still good.
How do I stop the condensate pipe freezing?
Lag and upsize the external section, or re-route it internally. We do both across Glasgow and Lanarkshire.
Does servicing keep my warranty valid?
Yes. Most manufacturer warranties require documented annual servicing by a Gas Safe registered engineer.
Related reading
What Happens During an Annual Boiler Service
Frozen Condensate Pipe: Safe Ways to Thaw It
Boiler Repair in Motherwell: Same-Day Fixes for ML1 Homes