01387 268 868 (Dumfries)
01556 503 150 (Castle Douglas)


Our skilled engineers are fully SNIPEF certified, and Gas Safe and Water Safe registered, providing a number of domestic boiler services.

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Domestic Boiler Services

Domestic Boiler Services

At Derek Mitchell Group, we offer a number of services in relation to gas and LPG. All of our engineers are fully SNIPEF certified, and Gas Safe and Water Safe registered.



"All in all, I am very happy with the company and the way in which they carry out their services. This will be my first choice for any future gas or electric work that I might require."

Removal of old boiler and installation of new

"This was our second boiler service from D.Mitchell Ltd-It was easy to arrange the appointment via the telephone at a convenient date and time. It was carried out neatly and professionally by Laurie. He protected the floor area with coverings prior to beginning and there was no mess afterwards. Social distance was maintained at all times."

Annual Service to Caravan Gas Boiler

The services we provide include:

  • Appliance installation, repair and servicing
  • Annual boiler servicing
  • Boiler fault finding, repairs, replacement and installation
  • Central heating health check
  • Central heating system installations and repairs
  • Central heating pump installation and repairs
  • Gas testing and certificates
  • Immersion heater installation, servicing and repairs
  • Landlord safety certificates
  • Radiator installation, bleeding and repairs
  • Thermostats and thermostat valve installation and repairs
  • Powerflushing
  • Vented and unvented cylinder installation, servicing and repairs.
  • If you do not see the service you are looking for, or are unsure of what service you require, please do not hesitate to contact us and speak to one of our engineers for further information.

If you do not see the service you are looking for, or are unsure of what service you require, please do not hesitate to contact us and speak to one of our engineers for further information.


Annual Boiler Service

To ensure that your boiler is working as efficiently as possible, we recommend an annual boiler service.

An annual boiler service includes a number of safety checks, as well as identifying and correcting any potential issues in order to minimise the need to future repairs. All pressures and settings are compared against manufacturer’s instructions and amended accordingly to make sure that your boiler is running as safely and efficiently as possible.

Once the service has been completed, we will provide you with a Gas Safety Certificate (CP12) to confirm that your boiler is safe. With our customer reminder service, you’ll never need to worry about when your next service is due, we will contact you to arrange an appointment at a time suitable for you.

Central Heating Check

To make sure your central heating is as economical as possible we offer a central heating health check, which includes:

  • Full service of your boiler
  • Servicing certificate
  • Water sample analysis
  • Thermal imaging of your radiators

You will be provided with a full report detailing the water sample results and copies of the thermal images alongside any recommendations we may make in relation to maintaining or improving your heating system. Take a look at a sample report here.

This health check is ideal for customers looking to make sure that they are getting the most for their money when it comes to their heating and hot water. It is also a great idea for anyone looking to purchase a property and want to make sure that there will be no major surprises after completion.


Powerflushing is extremely important in the maintenance of an efficient central heating system.

Over time sludge and contaminants can build up in your central heating system.  ‘Magnacleanse Powerflush’ is a revolutionary method of flushing these contaminants from your central heating system.

By removing these contaminants, you reduce the risk of a build up of sludge within your heating system allowing it to run effectively and efficiently for much longer. This saves you money, and decreases the likelihood of costly repairs being incurred in the future.


For any necessary repairs, a Derek Mitchell Group engineer will arrange to visit your home at a convenient time for you in order to diagnose any faults and advise you on the most suitable course of action, taking into consideration your budget and likely future needs.

We highly recommend installing a Magnaclean filter to your boiler. This filter helps to avoid common boiler damage caused by a build up of dirt in your heating system, which can result in costly repairs being required in years to come. To arrange a home visit, contact us today.

Oil Boiler Servicing

If your oil boiler is due a service, get in touch with us to arrange a visit from one of our engineers. We can undertake professional safety checks and our fully certified engineers will inspect and assess the physical condition of your boiler, including pipework, providing a complete report detailing any deterioration or problems and any repairs that may be necessary.

We will work to identify any issues, and ensure the safety and efficiency of your oil boiler, so get in touch with us today to find out more.




Domestic Projects

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Lloyd Limited - Carlisle

Mechanical and electrical installation on workshop extension for Lloyd Limited.

Westlands Country Park - Annan

Full design & build of electrical and mechanical services for Westland's Country Park.

Gracefield Arts Centre - Dumfries

Supply & installation of a new oil boiler and chemical flushing of the existing heating system pipe work.


Our people make us who we are

Derek Mitchell Group is a large, multi division contractor based in Dumfries & Galloway and working across the UK.

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