11/06/2026
❗When you look at a cross-section of a modern boiler plate heat exchange, it's easy to see how blockages can occur when a heating system isn't properly maintained❗
Some typical symptoms you can expect to see:
✅ Reduced hot water flow or weaker tap/shower pressure
✅ Slower hot water recovery (takes longer to reach set temperature)
✅ Fluctuating hot water temperature (surges between hot and lukewarm)
✅ Lower boiler efficiency / higher energy use for same output
✅ Frequent burner cycling or longer run times to reach temperature
✅ Unusual noises (gurgling or reduced flow-related sounds) during hot-water demand
✅ Increased boiler pressure variation when drawing hot water
✅ Error/fault codes related to flow, temperature sensors, or low heat transfer (model-dependent)
If you're having issues like this with your boiler, get in touch today to arrange for one of our gas safe engineers to investigate.
📞 01253 421311
📍Covering the Fylde Coast & surrounding areas
🏠 Energi House Ltd – Quality installations. Fair pricing. Every time.