Boiler Services

Whether you need installation, service or repair, we have your boiler covered.

Boiler Supply and Installation

We supply and install Oil,Gas & LPG boilers for your home. We can also supply & fit new oil storage tank at property.

Boiler Repair

Whatever your issue with your boiler or heating system, call and see how we can help.  Our heating engineers are experienced in oil, gas and LPG boilers.

Boiler Servicing

Our engineers are OFTEC regulated and are experienced in fitting and repairing boilers from all manufacturers, so you know you’ll receive a quality service every time you deal with us.

Our year-round protection with JPlan

For just £35 a month, you’ll have the reassurance that your boiler is working effectively and efficiently, and that we’ll be there to fix it if it breaks down.

The Jplan is ideal for homeowners with oil and LPG boilers.

The annual service ensures that your boiler is clean and fit to face the challenge of winter. And if you have a breakdown, just call — we aim to visit your home within 24 hours, Monday to Saturday.


Annual Boiler Service


Boiler parts & labour cover


Oil tank visual inspection

Servicing and repairs for your range cooker

If you own an Aga or Raeburn cooker, you’ll know how important it is to keep it in top condition, especially through the winter months when it has to work harder to heat your home and hot water.

At Johnston Heating Services we’re experts in all sorts of range cookers. So if you have a breakdown, or need an annual (or six-monthly) service, call us on 01382 505 092 or make an enquiry.

Hints and Tips

Why does my heating stay on when the clock/programmer is off?

This is usually the result of a faulty actuator on a motorised valve.

Why are my radiators cold when my boiler is hot?

This is normally a result of the circulation pump or a motorised valve having failed.

Why is my radiator cold at the top but warm at the bottom?

This is usually caused by air being trapped in your radiator. Using a suitable radiator ‘airing key’, you should be able to release the trapped air through the ‘bleed point’ at the top of your radiator.

Where do I find my oil shut off valve?

Your main oil shut off valve can usually be found at the bottom outlet of your fuel tank. The valve will have either a wheel type handle (clockwise to close) or a lever handle (quarter push to close).

Do I need to service my boiler and if so how often?

Annual servicing can increase your boiler efficiency, reduce emissions and ensure its safe operation. Studies have found that with just a 3mm layer of soot, your boiler efficiency can be reduced by more than 8%.

Where do I find my boiler restart button?

Your boiler restart button, also referred to as ‘lock out’, is located on your boiler burner unit. Usually, the burner unit front door cover will need to be removed to gain access to the control box reset (when ‘tripped’ the button is normally illuminated). To initiate a start-up, simply push the reset button – always […]

Why does my boiler gauge show no pressure?

The majority of modern boilers are installed as sealed systems with no header tank to automatically top up the system with water. The system pressure gauge, located either on the front of the boiler or on a nearby pressure vessel, will normally indicate 1 Bar when the system is cold. If your gauge is showing […]

Fault: Oil Boiler Locking Out

Have you checked your Fuel level? If there is plenty of oil in tank – call us and we can arrange someone to callout. If oil level is low or tank has ran dry the boiler will Lockout. Buy Heating Oil.