Boiler Not Working? When to Call a Stevenage Plumber
There’s nothing worse than discovering your boiler isn’t working—especially during the colder months in Stevenage. No hot water, no heating, and a lot of uncertainty about what to do next.
Before you panic, take a deep breath. While some boiler issues can be resolved with simple checks, others require the expertise of a qualified plumber in Stevenage. In this post, we’ll help you identify common boiler problems, what you can do yourself, and when it’s time to call in the pros.
Common Signs Your Boiler Isn’t Working Properly
- No hot water or heating
- Pilot light has gone out
- Strange noises like banging, whistling or gurgling
- Error codes or flashing lights on the boiler display
- Pressure too low or too high
- Leaking or dripping from the boiler
- Radiators not heating evenly
- Boiler keeps turning off on its own
Quick Checks You Can Do Yourself
Before calling for help, try these basic checks:
✅ Check the Thermostat
Make sure the thermostat is turned up and the room temperature hasn’t already reached the set level. Also, check if the batteries need replacing.
✅ Inspect Boiler Pressure
The ideal pressure is usually between 1 and 1.5 bar. If it’s too low, you might be able to top it up using the filling loop—only if you’re confident doing so. If unsure, don’t risk it.
✅ Look for Error Codes
Most modern boilers display error or fault codes when there’s a problem. Consult your boiler manual to decode the message.
✅ Reset the Boiler
Some faults can be cleared by pressing the reset button—refer to your boiler manual. However, repeated resets indicate a deeper issue.
✅ Check the Power and Gas Supply
Ensure the fuse hasn’t tripped and your gas supply is active. If your gas meter shows a fault or you can’t smell gas, do not attempt to fix it yourself.
When You Should Call a Plumber in Stevenage
If any of the following applies, it’s time to contact a qualified professional:
- The boiler is leaking
- You smell gas (call the National Gas Emergency number immediately: 0800 111 999)
- The boiler is making loud or unusual noises
- The pilot light keeps going out
- You’ve tried resetting the boiler and it keeps switching off
- Radiators remain cold even after bleeding
- You’re not confident doing any checks yourself
A qualified plumber in Stevenage can diagnose and repair most boiler issues quickly and safely. In some cases, it may be more cost-effective to replace the boiler—our team can offer expert guidance tailored to your home and budget.
What If It’s an Emergency?
No heating and hot water can be a real emergency, especially in winter or for vulnerable individuals. If your boiler breaks down suddenly, don’t wait—our Emergency Plumber in Stevenage service is available 24/7.
Need Help with a Faulty Boiler?
If your boiler isn't working as it should, our expert team is ready to assist. Whether it’s a quick fix, a major repair, or a new boiler installation, we’re here to help.
👉 Contact us or book a plumber in Stevenage today for fast, professional boiler repairs and advice.

