Category Heating Advice
Boiler losing pressure – expert advice from Jones Heating on what to do next
Why Is My Boiler Losing Pressure? | Complete Guide for Dunfermline & Fife

Why Is My Boiler Losing Pressure?

Complete guide for Dunfermline & Fife homeowners facing pressure problems

1.0-1.5 Normal pressure (bar) when cold
2.0 Target pressure when heating
2.5 Danger zone - above this bar
0.5 Shutdown point - below this bar

Common Causes of Pressure Loss in Fife Properties

Understanding why your boiler loses pressure in Scottish conditions

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Hidden Leaks

Even tiny leaks from radiator valves or pipe joints can cause pressure loss. Victorian properties with original pipework are particularly vulnerable to corrosion.

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Recently Bled Radiators

Bleeding radiators removes air but also reduces pressure. This is normal and easily fixed by topping up your boiler pressure.

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Faulty Pressure Relief Valve

If the PRV is passing water continuously, you'll see constant pressure drops. Check for dripping from the copper pipe outside.

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Expansion Vessel Problems

Common in boilers over 10 years old. The vessel absorbs pressure changes - when it fails, pressure drops dramatically.

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Frozen Condensate Pipes

Our #1 winter callout! External pipes freeze during Fife's 60+ annual frost days, causing complete boiler shutdown.

Professional Pressure Diagnosis

Expert assessment of your boiler's pressure problems

Professional boiler pressure diagnosis consultation

What Our Engineers Check:

Our Gas Safe registered engineers use professional diagnostic equipment to identify pressure loss causes quickly and accurately.

Victorian & Edwardian properties: We understand older Dunfermline properties' unique challenges with original pipework and conversion systems.

Coastal areas: Properties near the Forth face increased corrosion from salt air - we know what to look for.

How to Repressurise Your Boiler Safely

Step-by-step guide for emergency pressure restoration

1

Turn Off Boiler

Switch off and let cool completely before starting

2

Locate Filling Loop

Find the silver braided hose with black handles underneath

3

Open Valves Slowly

You'll hear water entering the system

4

Watch Pressure Gauge

Stop at 1.2-1.5 bar on the gauge

5

Close Valves

Ensure both valves are fully closed

6

Restart Boiler

Switch back on and check normal operation

Gas Safe engineer repairing boiler pressure issues

Expert Pressure Problem Repairs

Our Gas Safe registered engineers handle all pressure-related repairs across Dunfermline, Kirkcaldy, and Fife:

  • Pressure relief valve replacement
  • Expansion vessel recharging/replacement
  • System leak detection and repair
  • Condensate pipe relocation
  • Complete system pressure testing

Our boiler repair service covers all major brands and provides same-day emergency response when you need it most.

⚠️ When Should You Call a Gas Safe Engineer?

  • You're topping up pressure more than once a month
  • Pressure drops within hours of refilling
  • You've spotted signs of leaks around the system
  • The boiler shows error codes after repressurising
  • Your energy bills have suddenly increased
  • Radiators stay cold despite adequate pressure

Important: Frequent pressure loss can cause long-term damage through corrosion, sludge build-up, and premature component failure. Don't ignore persistent problems.

Need Help With Pressure Problems?

Don't let dropping pressure leave you in the cold. Expert help available 24/7 across Dunfermline and Fife

01383 660098

Gas Safe registered engineers serving Dunfermline, Kirkcaldy, and all of Fife

Emergency service available • Most calls attended within 2-4 hours • Annual servicing prevents problems