Heating Tips & Advice | Gas Wizard Heating Blog

Baxi boiler fault codes explained (and when to call an engineer)

Baxi boiler flashing an error code? Learn what the most common fault codes usually mean, what you can safely check at home and when it is time to call an engineer.

No hot water but heating works: causes and what to do

Radiators warm but taps running cold is a common boiler headache. Learn the most likely causes, what you can safely check yourself, and when to call an expert.

Radiator cold at top but hot at bottom? What it means

Got a radiator that is hot at the bottom but chilly across the top? Learn what it usually means, what you can safely check yourself, and when to call a heating engineer.

Boiler Pressure Dropping? What It Means & Next Steps

Noticed your boiler pressure keeps dropping? Learn what it means, simple checks you can do yourself, and when it is time to call in a Gas Safe engineer.

Combi Boiler Not Heating Water: Causes & Fixes

Hot water going lukewarm, cutting out in the shower or only working sometimes? Use this practical guide to trace common combi boiler faults and next steps.

Radiators Not Heating Up? Causes & Safe Checks

Radiators cold at the top, bottom or in certain rooms? Use this step‑by‑step guide to safely check common issues before calling an engineer.

Heating Tips & Updates