Few things are as frustrating as discovering there’s no hot water just when you need it most. Before you start worrying about costly repairs or replacements, it’s worth taking a few simple steps to diagnose the problem. Many issues can be resolved with a quick fix, saving you time and money. In this post, we’ll guide you through some common causes of hot water problems and when to call in a professional.

Check 1: Is Your Boiler Turned On?

It may sound obvious, but sometimes the simplest solutions are the most overlooked. Check if your boiler is switched on and that the power supply hasn’t been disrupted.

Look for error codes on the boiler display or warning lights that could indicate a specific issue. If your boiler seems unresponsive, try resetting it according to the manufacturer’s instructions.

Check 2: Inspect the Thermostat

A faulty thermostat can stop your water from heating. Make sure the thermostat is set to the desired temperature and hasn’t been accidentally turned down.

For systems with separate controls for heating and hot water, double-check that the hot water timer is set correctly and hasn’t been turned off or overridden.

Check 3: Check the Pilot Light (for Older Boilers)

If you have an older boiler with a pilot light, ensure it hasn’t gone out. A strong gust of wind or a temporary gas supply issue could extinguish the flame.

Follow the manufacturer’s instructions to safely relight the pilot. If it keeps going out, this may indicate a more serious issue, such as a faulty thermocouple, requiring professional attention.

Check 4: Inspect the Water Pressure

Low water pressure can prevent your boiler from functioning correctly. Modern boilers typically have a pressure gauge on the front; the ideal pressure is usually between 1 and 2 bars.

If the pressure is too low, you may need to repressurise the boiler by following the instructions in your boiler manual. If the pressure keeps dropping, it’s time to call a heating engineer as this could signal a leak or other system issue.

Check 5: Is the Hot Water Tank Heating?

If you use a hot water cylinder rather than a combi boiler, the issue might be with the immersion heater or thermostat within the tank.

• Immersion Heater Issues: If you rely on an electric immersion heater, ensure it’s switched on and receiving power.
• Thermostat Malfunction: A malfunctioning thermostat within the cylinder can prevent the water from heating properly. This will need to be inspected and potentially replaced by a professional.

Check 6: Frozen Pipes

During colder months, frozen pipes can block the flow of water and stop your boiler from working efficiently. The condensate pipe, which drains water from your boiler, is particularly prone to freezing.

Signs of a frozen pipe include gurgling sounds from your boiler or an error code. To fix this, you can gently thaw the pipe using warm (not boiling) water or a heat wrap.

Check 7: Inspect the Boiler Timer and Settings

Power outages or accidental button presses can reset your boiler’s timer. Check that the timer settings match your schedule for hot water and heating.

If the timer is digital and not functioning, it could indicate a power supply issue or an internal fault.

Check 8: Gas Supply Issues

If your boiler is gas-powered, ensure your home has a steady gas supply. Check other gas appliances, such as a gas cooker, to see if they’re working correctly.

If you suspect a gas supply issue, contact your gas provider immediately. Never attempt to fix gas-related issues yourself.

When to Call a Professional

While these checks can help diagnose common issues, some problems require expert attention. Persistent low pressure, leaks, strange noises, or frequent error codes may signal a more complex fault within your heating system. Attempting to repair these issues without the right expertise can be dangerous and may void your boiler’s warranty.

Why Choose T Griffin Plumbing and Heating?

At T Griffin Plumbing and Heating, we specialise in diagnosing and repairing all types of boiler and hot water issues. Whether it’s a quick fix or a more complex problem, our experienced engineers are here to help.

If you’re experiencing hot water problems and need professional assistance, contact us today. We provide reliable boiler repair services in Bognor Regis and the surrounding areas. Call us now or fill out our online form to schedule a visit. Don’t let a lack of hot water disrupt your day – let us restore warmth and comfort to your home.