How To Re-pressurise Your Heating System

Having a properly pressurised heating system is crucial for keeping your home warm and comfortable. This guide will show you how to repressurise your system yourself, saving you money and a call to the engineer.

What You'll Need:

  • Locate your pressure gauge. It's usually a round dial located on your boiler or near the filling loop.
  • Find the filling loop. This is a braided hose with a tap on it, typically located near your boiler. It might have one or two taps.


  1. Check the Pressure Gauge:  Take a look at your pressure gauge. If the needle is pointing close to zero, your system needs repressurizing.  Ideally, the pressure should be between 1 and 1.2 bar (shown on the gauge).
  2. Locate the Filling Loop: Find the braided hose (filling loop) with a tap (usually black or blue) near your boiler. There might be one or two taps on the hose.
  3. Turn on the Filling Tap (One Tap System):  If you have only one tap on the filling loop, simply turn it on slowly. You'll hear water filling the system.


  1. Turn on the Filling Taps (Two Tap System):  If you have two taps, turn on the first tap completely. Then, slowly open the second tap while watching the pressure gauge.
  2. Monitor the Pressure Gauge:  Keep an eye on the pressure gauge as the water fills the system. Once the pressure reaches between 1 and 1.2 bar (where the black needle is currently in the video), it's time to stop.
  3. Turn off the Tap(s):  With the pressure between 1 and 1.2 bar, turn off the filling tap(s). If you have one tap, simply turn it off. If you have two taps, close the second tap first, then the first one.

Congratulations! You've successfully repressurised your heating system. Now you can sit back, relax, and enjoy a warm and comfortable home.

Safety Note: If you're uncomfortable performing these steps yourself, or if you have any leaks, it's always best to consult a qualified heating engineer.

Ready to book a service plan?

Our friendly, professional team is here to help. Tell us how we can assist you, and we'll be in touch shortly!
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.