Boiler pressure keeps dropping
Repeated pressure loss can indicate a leak or component fault. Avoid repeated topping-up without diagnosis.
What to do first
- Check whether the issue is isolated or affects the whole home.
- Take photos and note any recent changes, work or weather.
- Stop DIY if the task involves regulated work, hidden services, height or a safety risk.
What could be behind it
- Control/setting issue
- Air, pressure or circulation problem
- Component or appliance fault
These are common possibilities, not a diagnosis of your specific home.
When to stop doing it yourself
Stop if you are unsure of the cause, cannot isolate the system safely, need to open fixed electrical/gas equipment, work at height, disturb hidden building fabric, or the problem is getting worse.
QUOTE CHECK
Typical quote components
- Diagnosis
- Call-out
- Parts
- Labour
PARTS / TOOLS
Possible items involved
Do not buy parts until the cause is confirmed.
How to describe it to a professional
My boiler pressure keeps dropping.
NEXT STEP
Move from symptom to action.
Compare the right service, understand the quote and keep the completed work in My Home.