Public sector buildings need ongoing heating, ventilation and air conditioning maintenance. NHS hospitals, council offices, schools and social housing estates all generate steady HVAC contract work throughout the year.
HVAC and mechanical contracts include boiler servicing, planned preventative maintenance, air handling unit maintenance, heat pump installation, gas safety inspections and reactive repair work. Many are long-term PPM contracts offering predictable recurring income.
Mechanical services is one of the most reliable categories in public sector maintenance spend because so much of it is legally mandated. Social landlords must carry out annual gas safety checks on every property. Public buildings must maintain ventilation systems and water hygiene regimes. This is not discretionary work that gets cut when budgets tighten.
The prize for a small mechanical contractor is a planned preventative maintenance contract. These typically run three to five years, cover a defined asset list on a scheduled cycle, and generate predictable monthly income. They are considerably more valuable to a small business than reactive call-out work, and they are scored more on capability and process than on headline price.
Decarbonisation has changed the shape of this market significantly. Public sector estates are under pressure to move off gas, and heat pump installation, heat network connections and building fabric improvements now appear regularly in tenders. Contractors with heat pump capability and the relevant certification are competing in a much less crowded field than traditional boiler work.
Compliance documentation is scrutinised heavily. Gas Safe registration for every engineer, F-Gas certification for refrigerant work, and evidence of a competence management process are all standard requirements. Buyers will also want to see how you handle out-of-hours response, because a heating failure in a school in January is an emergency.
£20,000 to £500K
Yes. Every engineer carrying out gas work on a public sector contract must hold current Gas Safe registration covering the relevant appliance categories. This is a legal requirement, and buyers verify it at contract award and periodically thereafter.
Planned preventative maintenance is scheduled servicing carried out on a fixed cycle rather than in response to breakdowns. PPM contracts typically run three to five years and generate predictable recurring income, which makes them considerably more valuable to a small contractor than ad hoc reactive work.
You do for any work involving fluorinated refrigerant gases, which covers most air conditioning and heat pump systems. REFCOM is the most widely recognised certification body and is frequently named specifically in tender documents.
Yes, and it is growing quickly. Public estates face decarbonisation targets that require moving away from gas heating, and there are currently more projects than certified installers. Demonstrable heat pump capability puts you in a much less competitive field than conventional boiler work.
Typically as an annual fixed price for the scheduled PPM programme, with an agreed schedule of rates for reactive work and parts. Read carefully which components are included in the fixed price and which are chargeable, as this is the most common source of margin erosion.
A defined response time, usually somewhere between two and eight hours depending on criticality, backed by a documented on-call rota and escalation process. Heating failures in schools, care settings and hospitals are treated as emergencies.