EPM engineer servicing a commercial boiler system in a plant room

How Much Does a Commercial Boiler Service Cost?

October 30, 2026

Like most trades work, the cost of a commercial boiler service depends on what you have got and how much work is involved. A single wall-mounted boiler in a small office is a different job from a plant room with multiple units and associated equipment.

What drives the cost

The type and size of the boiler is the biggest factor. Larger commercial boilers take longer to service than smaller ones.

The number of boilers matters. If you have two or three units in a plant room, all of which need servicing and checking, the time and cost goes up accordingly.

Whether other associated plant is included — hot water cylinders, pressurisation units, and so on — will affect the scope of the visit and the cost.

Access to the boiler room makes a difference. A well-maintained, accessible plant room is easier to work in than one that is cramped or where the boiler is surrounded by stored equipment.

If remedial work is identified during the service, that will be quoted and agreed separately before the work is carried out.

Make sure your engineer is Gas Safe registered

This is not optional. Anyone working on commercial gas appliances must be Gas Safe registered. Ask to see their registration before work starts, or check the Gas Safe Register yourself. EPM is Gas Safe registered and carries out commercial boiler services across Exeter and Devon. Get in touch for a quote based on your installation.

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