Boiler & heating troubleshooting guides
Diagnose boiler faults including ignition problems, pressure issues, kettling noises, lockouts and central heating circulation problems.
Common problems
Outside drain blocked
Advice Hub / Drains & Blockages Outside drain blocked Check time: 10–15 minutes • Difficulty: Easy checks • Safety: Low risk Quick summary This guide explains common causes and safe checks related to outside drain blocked. Safety first If you smell gas or suspect CO, leave the property and call 0800 111 999. Do not
Water pressure dropping when tap runs
Advice Hub / Water Pressure Water pressure dropping when tap runs Check time: 5–10 minutes • Difficulty: Easy checks • Safety: Low risk Quick summary This guide explains common causes and safe checks related to water pressure dropping when tap runs. Safety first If you smell gas or suspect CO, leave the property and call
Radiator not heating after bleeding
Advice Hub / Radiators Radiator not heating after bleeding Check time: 5–10 minutes • Difficulty: Easy checks • Safety: Low risk Quick summary This guide explains common causes and safe checks related to radiator not heating after bleeding. Safety first If you smell gas or suspect CO, leave the property and call 0800 111 999.
Radiator valve leaking
Advice Hub / Radiators Radiator valve leaking Check time: 5–10 minutes • Difficulty: Easy checks • Safety: Medium risk Quick summary This guide explains common causes and safe checks related to radiator valve leaking. Safety first If you smell gas or suspect CO, leave the property and call 0800 111 999. Do not remove boiler
Boiler making loud vibrating noise
Advice Hub / Boilers & Heating Boiler making loud vibrating noise Check time: 5–10 minutes • Difficulty: Easy checks • Safety: Low risk Quick summary This guide explains common causes and safe checks related to boiler making loud vibrating noise. Safety first If you smell gas or suspect CO, leave the property and call 0800
TRV valve faults explained
Advice Hub / Radiators TRV valve faults explained Check time: 3–5 minutes • Difficulty: Easy checks • Safety: Low risk Quick summary This guide explains common causes and safe checks related to trv valve faults explained. Safety first If you smell gas or suspect CO, leave the property and call 0800 111 999. Do not
Heating system sludge explained
Advice Hub / Boilers & Heating Heating system sludge explained Check time: 3–5 minutes • Difficulty: Easy checks • Safety: Low risk Quick summary This guide explains common causes and safe checks related to heating system sludge explained. Safety first If you smell gas or suspect CO, leave the property and call 0800 111 999.
Radiator balancing explained
Advice Hub / Radiators Radiator balancing explained Check time: 3–5 minutes • Difficulty: Easy checks • Safety: Low risk Quick summary This guide explains common causes and safe checks related to radiator balancing explained. Safety first If you smell gas or suspect CO, leave the property and call 0800 111 999. Do not remove boiler
PRV valve discharge explained
Advice Hub / Water Pressure PRV valve discharge explained Check time: 3–5 minutes • Difficulty: Easy checks • Safety: Low risk Quick summary This guide explains common causes and safe checks related to prv valve discharge explained. Safety first If you smell gas or suspect CO, leave the property and call 0800 111 999. Do
Expansion vessel failure explained
Advice Hub / Water Pressure Expansion vessel failure explained Check time: 3–5 minutes • Difficulty: Easy checks • Safety: Low risk Quick summary This guide explains common causes and safe checks related to expansion vessel failure explained. Safety first If you smell gas or suspect CO, leave the property and call 0800 111 999. Do