🚿 What to Do If You Have No Hot Water

Few things are worse than turning on the tap and realising there’s no hot water especially on a cold morning! Don’t panic just yet. There are a few simple checks you can do before calling a plumber.

Here’s a step-by-step guide from DM Emergency Plumbing to help you get your hot water back.

🔧 1. Check If It’s the Whole House

Start by checking all taps and showers.

• If only one tap has no hot water, it might be a local issue (like an airlock or blocked mixer).

• If all taps are affected, the problem is likely with your boiler, immersion heater, or water supply.

🔥 2. Check the Boiler Pressure and Power

If you have a combi boiler, look at the pressure gauge it should read between 1.0 and 2.0 bar.

• If it’s lower than 1 bar, repressurise your boiler (see your manual).

• Make sure your boiler is turned on and that the power and gas supply are working.

If the boiler display is blank, check your fuse box or plug socket sometimes it’s just a tripped fuse.

💡 3. Check for Error Codes

Modern boilers show error codes when something’s wrong. Write it down and check your boiler manual  or simply tell us the code when you call DM Emergency Plumbing, and we’ll know exactly where to start.

🌡️ 4. For Homes with an Immersion Heater

If you use an electric water heater instead of a boiler:

• Make sure it’s switched on at the wall.

• Check the fuse and the timer settings.

• If you still have no hot water, the element or thermostat may need replacing (a quick job for a qualified plumber or electrician).

🧰 5. Look for Leaks or Airlocks

Sometimes air can get trapped in your pipes, stopping hot water from flowing properly.
Try running your taps for a few minutes  if the water splutters, you may have an airlock.
If you notice damp patches or dripping pipes, turn off your water supply and call a professional straight away.

🧑‍🔧 When to Call a Professional

If you’ve checked the basics and still have no hot water, don’t risk damaging your boiler or electrical system.
At DM Emergency Plumbing, we can diagnose the issue quickly whether it’s a faulty valve, pressure loss, or broken component and get your hot water back on the same day in most cases.

Need a local plumber in Northamptonshire?
Call DM Emergency Plumbing for fast, friendly, and professional help  we’re always here when you need us most!