Tips for turning on a boiler that has been switched off for a long time

It is a well-known fact that when older systems or pieces of equipment are left unused, they are more likely to develop faults. The same can be true for boilers. So if you do decide to switch off your home boiler for an extended period of time, it’s important you follow the recommended steps when switching it back on. This will help extend the lifespan of the unit.

Should I turn my boiler off at the mains?

If you’re going away for a long period of time, you might decide to switch your home boiler off until you get back. It can save you money, especially during colder months. However, this is not recommended if you have an older model of boiler system as it could risk of developing faults. For instance, dust accumulating in the boiler PCB has the potential to cause a range of faults.

Note that if you choose to switch the boiler off for short periods, such as overnight, you could be increasing your heating costs. This is because it can require more fuel to bring the temperature in the home up to the desired reading. Extra strain on boiler parts like the heat exchanger can increase the need for repairs over time. Of course, this will also be influenced by the ambient temperature of the property.

How to turn on a boiler that has been off for a while

The following tips are designed to help you safely turn on a boiler that has been off for an extended period (usually 2 or more weeks):

1. Inspect the boiler: Before turning on the boiler, it’s important to check any signs of damage, leaks, or corrosion. This means examining the pipes, valves, casing, and fittings.
2. Check fuel supply: Ensure that the boiler has an adequate supply of fuel, whether it’s gas, oil, or electricity. If it’s a gas boiler, make sure the gas supply valve is open.
3. Follow reset procedure: If the boiler has any reset controls, follow the manufacturer’s instructions for resetting them. This may involve pressing a button or turning a dial.
4. Bleed radiators: It’s a good idea to bleed the radiators in the property before turning on the boiler. Air can remain trapped in the system, preventing proper heating.
5. Increase temperature gradually: When turning on the boiler for the first time after a long period of disuse, it’s a good idea to gradually increase the temperature setting rather than immediately choose your desired setting. This helps minimise sudden stress on the system components.
6. Check for faults: After turning on the boiler, monitor it closely for any signs of leaks, unusual sounds (such as banging or rumbling), or other issues. If you notice anything concerning, turn off the boiler immediately and seek assistance from a Gas Safe engineer.
7. Schedule maintenance: If needed, get a qualified professional to inspect the boiler and conduct maintenance. They will ensure all parts and components are in working order, sourcing boiler spares with a quick turnaround.

Reliable heating solutions for boiler maintenance

National Boiler Spares provide new, refurbished, and replacement boiler parts that meet manufacture standards. Our responsive delivery service allows any faults to be addressed before they develop into costly problems. This will help make your return from holiday as stress free as possible. Contact us if you have any more questions about best practices for heating efficiency.