No Hot Water but Heating Works: Common Causes
14 September 2026 | Leyton Boilers
On combi boilers, a stuck diverter valve may send heat to radiators instead of taps. Scaled plate heat exchangers restrict hot water flow in hard water areas.
These faults are usually repairable without full replacement. Our engineers test components systematically to avoid unnecessary parts bills.
Book a diagnostic visit with Leyton Boilers for fast hot water restoration.
Need professional help?
Leyton Boilers provides Gas Safe registered boiler servicing, repairs, and installations across London.
07429 031 444 Contact us