BidSkim
Free report
Service market

Boiler maintenance contracts

UK public sector · 400 contracts awarded in the 12 months to 6 October 2026

Covering 600+ buyer portals · 5 years of records · Updated 6 October 2026 · How we count

Contracts awarded
400
Last 12 months
Median contract
£98k
Recorded value
Recorded value
£194m
379 of 388 main-service contracts have a published value
Buyers
187
Suppliers
247

BidSkim assigns contracts to services from the notice text. How services are assigned

What stands out

  • The five suppliers that won the most boiler maintenance contracts took 9% of them (34 of 400).
  • Contracts awarded per quarter rose 35% from the first half of the period to the second.
  • The median contract, £98k, is 29% below the median across construction & trades contracts (£139k).
  • North West had the most contracts: 86, or 22% of the total.

Who buys boiler maintenance

By contracts awarded, the 12 months to 6 October 2026.

  1. 1NHS Property Services Limited42 contracts
  2. 2Hampshire County Council26 contracts
  3. 3Gov Facility Services Ltd12 contracts
  4. 4City and County of Swansea12 contracts
  5. 5Milton Keynes City Council6 contracts
  6. 6East Sussex County Council6 contracts
  7. 7Southend-on-Sea City Council6 contracts
  8. 8Kirklees Council5 contracts
  9. 9Buckinghamshire Council5 contracts
  10. 10West Northamptonshire Council5 contracts

Top boiler maintenance contractors by contracts won

The 12 months to 6 October 2026.

  1. 1Mitie9 contracts
  2. 2Simer Environmental Services Ltd7 contracts
  3. 3BSW HEATING LTD6 contracts
  4. 4Lord Combustion Services Limited6 contracts
  5. 5Lorne Stewart6 contracts
  6. 6R & A MECHANICAL SERVICES LTD6 contracts
  7. 7Bruce Towers and Sons Limited6 contracts
  8. 8Industrial Boiler Services Ltd5 contracts
  9. 9Stonegrove Limited5 contracts
  10. 10ROBERT KIRKLAND (BLYTH) LIMITED5 contracts

Latest and largest awards

Each links to the official notice.

Latest

Largest

Contracts awarded by quarter

76Q4 2025*94Q1 2026101Q2 2026127Q3 20262Q4 2026*
* part quarter

Where the contracts were awarded

England 356 · Wales 33 · Scotland 9 · Northern Ireland 2

North West86South East63London47Yorkshire and The Humber33Wales33North East32East of England32South West17West Midlands15East Midlands10Scotland5Northern Ireland2UK-wide or not stated25

What is included

Installation, replacement, servicing and repair of boilers, burners, plant rooms, heating and hot water distribution, emitters, pumps, pressurisation units and steam plant in non-domestic buildings and communal plant rooms.

  • Commercial boiler and burner replacement
  • Boiler and heating plant PPM and reactive repair
  • Commercial gas servicing of communal boiler plant in housing schemes
  • Heating distribution pipework, radiators and emitters
  • Circulation pumps, pressurisation units and TRVs
  • Gas-fired water heaters and calorifiers
  • Steam plant servicing
  • Boiler safety valve overhaul
  • Heating zoning and small heating system upgrades

What is not included

  • Domestic boiler servicing and replacement (con.mech.domestic-gas-servicing, con.mech.domestic-heating-replacement)
  • Gas pipework, tightness testing and gas safety certification bought on their own (con.mech.commercial-gas-safety)
  • Oil and LPG fuel systems (con.mech.oil-lpg-heating)
  • Heat pumps and hybrid systems (con.energy.heat-pumps)
  • Biomass boilers (con.energy.biomass-boilers)
  • District heat networks and energy centres (con.energy.heat-networks)
  • Heating system water treatment (con.mech.water-treatment)
  • BMS controls let on their own (con.mech.building-management-systems)
  • Electric heating (con.elec.electric-heating)

Often bought by the same buyers