Hvac Insurance from £12.00/month

HVAC contractors need public liability that covers work on live mechanical and electrical systems, F-Gas compliant operations, employers' liability for engineers, and professional indemnity if you design or specify systems. A gap to check is design work done informally — a specified system that underperforms is a professional indemnity claim, not a public liability one.

Cover this trade usually needs

Cover	Why it matters	Typical limit
Public liability	Damage and injury during installation and repair — water leaks from pipework are the classic claim	£2m–£5m; £5m common for commercial contracts
Employers' liability	Legal requirement — engineers working at height, with electrics and refrigerants	£10m (legal minimum £5m)
Professional indemnity	System design and specification — an undersized or wrongly specified system	£250k–£1m where design is done
Contract works	Units and materials on site damaged or stolen before handover	Matched to largest contract value
Tools, stock and goods in transit	Tools, refrigerant and units in the van	Full replacement value

Key risks

• A poorly jointed pipe or condensate line leaks and floods the client's premises.
• A refrigerant leak causes damage or injury, or breaches F-Gas rules.
• A system you specified fails to heat or cool the building and the client claims the redesign cost.
• Units or materials are stolen from site before handover.
• An engineer is injured working at height or on live electrics.

Regulations and licences

• F-Gas Regulation — engineers handling refrigerants must be certified and the company registered.
• Gas Safe registration for any work on gas heating appliances.
• Part P building regulations for electrical installation work.
• CDM 2015 duties on construction projects.

What we check before quoting

• The split between domestic, commercial and industrial work.
• Whether you design or specify systems, even informally.
• Any gas work — that requires Gas Safe and changes the rating.
• Work at height: roofs, plant rooms and external condensers.
• Largest contract value and whether units sit on site before installation.

Gaps we see most often

• Design and specification work not declared, so performance claims are uninsured.
• Damage to the system being worked on excluded from public liability.
• Refrigerant and units in the van not covered overnight.
• Gas work assumed covered when the policy only rated for air conditioning.

Limits clients and contracts usually ask for

• Public liability £2m–£5m; £5m is standard for commercial contracts.
• Employers' liability £10m (the legal minimum is £5m).
• Professional indemnity £250k–£1m where design is done.

Key facts and sources

• HSE's provisional figures record 126 workers killed in work-related accidents in Great Britain in 2025/26, with construction and agriculture together accounting for over a third, and falls from height the most common kind of fatal accident at around a quarter. HSE — Work-related fatal injuries in Great Britain, 2026
• The Construction (Design and Management) Regulations 2015 place legal duties on clients, designers and contractors on construction projects in Great Britain, including domestic work. Domestic client duties normally transfer to the contractor or principal contractor. legislation.gov.uk — CDM Regulations 2015

Make refrigerant and commissioning records tell the same story

Create an equipment-specific file linking serial numbers, refrigerant identification, commissioning results and maintenance visits rather than storing records only by customer address. The government's F-gas record guidance describes information needed for equipment within its scope, including gas quantities and leak-check results. Confirm the applicable regime and thresholds for the installation's location, particularly Northern Ireland, rather than assuming one UK-wide position. These regulatory records help reconstruct work but do not establish insurer acceptance of refrigerant-related liabilities.

Agree who owns the operator record and how your service report reaches them after each visit. If another contractor subsequently attends, preserve your original findings and record the handover rather than overwriting the equipment history. Distinguish a leak you discovered from a repair you carried out and a recommendation the customer deferred. This provides a clearer broker discussion if a client alleges prolonged refrigerant loss, equipment damage or avoidable shutdown after several businesses have worked on the same circuit.

For commissioning disputes, retain the design brief, stated operating conditions and test results, including limitations on what could be tested at handover. Separate a complaint that the room never reaches the promised temperature from physical damage caused by an escape of water or refrigerant. Ask the broker to review the actual performance undertaking and service activities. Do not assume a maintenance liability section responds to the cost of improving an underspecified installation or meeting an unqualified contractual efficiency promise.

Before changing refrigerant, adding heat-recovery functions or taking over an undocumented system, obtain the manufacturer's relevant instructions and identify any changed competence or safety requirements. Record the client's authorisation and the basis on which existing components were judged suitable. Notify the broker where the change expands your declared work. Keep recovered-gas records and disposal evidence where applicable, while recognising that regulatory compliance, pollution-related insurance questions and responsibility for rectifying the installation require separate consideration under the relevant wording.

GOV.UK — Record F gas in equipment you own or service

Common questions

Am I covered if a pipe I fitted leaks and floods the building?

Public liability may cover resulting water damage if the installation activity is insured. Check water-damage, workmanship and property-being-worked-on exclusions; the cost of correcting the defective pipe itself may be excluded. Cover is subject to the policy terms, limits and excesses.

Do I need professional indemnity as an HVAC contractor?

If you design or specify systems — even recommending a unit size for a building — yes. If the system underperforms, the client claims for your specification error, and public liability does not cover that.

Does my policy cover gas boiler work?

Only if gas work is declared and you are Gas Safe registered. Many HVAC policies are rated for air conditioning and refrigeration only — adding gas work without telling the insurer can void a claim.

Are units covered while sitting on site before I install them?

Not under tools cover — materials and units for a specific contract need contract works cover. Without it, a stolen condenser unit before handover is your loss.