Heat Pump Installer Insurance
Heat pump installation has a failure mode almost no other trade shares: everything works and the customer is still unhappy.
The Design Is The Product
A heat pump is sized to a heat loss calculation, and it delivers heat at a lower flow temperature than a boiler. If the heat loss was calculated optimistically, the emitters were not upsized, the cylinder is too small, the controls were set up badly or the fabric is leakier than assumed, the house does not get warm enough and the running cost is higher than quoted. Nothing is faulty. The design was wrong, and the client paid for a system on the strength of it.
Around that sit real physical exposures: ground loops and boreholes for ground source, refrigerant under pressure, and a substantial external unit fixed to somebody's wall.
What Heat Pump Installer Insurance Covers
Professional indemnity for heat loss and design
The core exposure. Heat loss calculations, emitter sizing and system design that a client's comfort and running cost depend on. Mechanics on our professional indemnity page.
Public liability
Injury and damage to third parties, including the home you are working in. £5 million is standard and £10 million on commercial and social housing contracts.
Water damage
Heating systems are full of water. A joint that failed, a cylinder connection or a pipe run through a ceiling is the frequent claim.
Ground works and boreholes
For ground source, excavation across a garden or drilling to depth, with services, ground movement and arisings to deal with.
Employers' liability
Compulsory at a £5 million statutory minimum. Refrigerant handling, lifting external units, hot works and working in occupied homes.
Refrigerant and F gas
Refrigerant under pressure, with handling, recovery and leak detection obligations attached to the work.
Products liability
Where you supply pumps, cylinders and controls, a failure in the equipment is a product claim.
Where The Cover Stops
Wordings differ between insurers, so treat these as the usual position rather than as universal fact. Where one of them matters to you, it is worth checking on your own schedule before you need to.
Performance and running cost
A system that does not heat the house to the promised temperature, or costs more to run than quoted, is a financial loss rather than damage.
Fabric the client did not improve
A design based on assumed insulation that was never installed will underperform, and whose assumption it was decides the claim.
Ground movement from loops and boreholes
Trenching across a garden near a house, or drilling, carries the same movement exposure as any excavation beside a dwelling.
Noise from external units
A unit sited close to a boundary generates complaints and sometimes planning problems, which is a cost rather than an insured loss.
Legionella in low temperature systems
Hot water at lower temperatures raises a bacterial question that the cylinder and controls strategy has to answer.
Grant and certification conditions
Work funded through a grant scheme carries conditions, and a failure to meet them affects the client's funding rather than their heating.
Heat Loss Is Where The Claims Start
If a heat pump installation goes wrong commercially, the cause is nearly always a number produced before anybody lifted a tool.
A heat pump has to deliver the building's heat loss at a low flow temperature, which means the calculation drives everything: the unit size, the emitter sizes, the pipework, the cylinder and the controls. Calculate the heat loss optimistically, or base it on fabric improvements the client intended rather than made, and the system cannot keep up on the coldest days. Undersize the emitters and the flow temperature has to rise, which destroys the efficiency and the running cost the client was quoted. Nothing has failed. The house is cold and the bills are high.
So the calculation and its assumptions are the file that defends you. Record the method used, the fabric assumptions and where they came from, room by room heat loss and the emitter sizes required, the design flow temperature, and anything the client declined such as radiator upgrades or insulation. Where a client refuses a recommended emitter change, that refusal in writing is the difference between a design failure and a client decision, and it is the single most valuable record in this trade.
Expectations Need Setting In Writing
A heat pump does not behave like a boiler, and a client who was not told that will report a fault that is not a fault.
Heat pumps work best running continuously at low temperature rather than in short bursts, radiators feel cooler to the touch, the hot water recovery is slower, and the system is less tolerant of being turned down and boosted. A household used to a combi boiler experiences all of that as underperformance. Add a quoted efficiency figure that assumed a design flow temperature the installation never achieved, and the dispute is about running cost rather than comfort.
Which makes handover part of the risk management rather than a courtesy. Explain in writing how the system is meant to be run, what the radiators will feel like, what the hot water recovery is, and what the quoted running cost assumed. Set the controls up properly and record the settings, because a system left on a boiler-style schedule will cost more and perform worse. A client who understood what they were buying complains far less than one who found out afterwards, and the written handover is also what answers a claim that the system was misrepresented.
Ground Source Means Groundworks
The ground source side of this trade carries exposures that belong to civils rather than to heating.
Horizontal loops mean trenching across a garden, which means services, drainage, tree roots and reinstatement of a lawn or driveway the client cares about. Vertical boreholes mean drilling to depth, with arisings, water strikes, the possibility of connecting two aquifers, and plant working close to a house. Both are excavation near a dwelling, which brings the ground movement question that applies to any deep dig beside a building.
So treat it as groundworks with a heating system attached. Trace services before breaking ground rather than assuming a garden is clear, record the condition of the house, boundary walls and hard landscaping before starting, agree reinstatement expectations in writing because a client's idea of a restored lawn differs from a contractor's, and establish whether your policy covers subsidence and ground movement at all. Where drilling is subcontracted, check the driller's own cover rather than assuming it, because a borehole problem reaches the client through you.
Water, Refrigerant And An External Unit
The physical claims in this trade are the ordinary ones, and two of the three are shared with any heating installation.
Water is the frequent loss: a system full of water, new pipework through ceilings and floors, a cylinder connection, a filled system left over a weekend. The controls are the same as any heating work, pressure testing before closing anything up and before leaving, and they matter more in an occupied home with finished floors. Refrigerant is the regulated one, with handling, recovery and leak obligations attached, and a release is both an environmental matter and a system failure.
The third is the external unit, and it generates a kind of complaint rather than a claim. A substantial box fixed to a wall or standing on a base, running at night, close to a neighbour's window or a boundary, produces noise objections and occasionally planning difficulty. Siting it for acoustics and for permitted development rather than for the shortest pipe run avoids a dispute that insurance does not answer, and recording the siting decision and what the client was told protects you when a neighbour objects later.
How To Choose A Broker For Heat Pump Work
The exposure is the design, not the installation. We are an FCA regulated broker and will not tell you we are the best choice. These are the questions that decide it.
Is professional indemnity in place for heat loss and design?
A system that cannot heat the house is a design failure with nothing damaged, which liability cover does not answer.
Does the cover reach performance and running cost?
The commonest dispute is a quoted efficiency the installation never achieved, which is financial rather than physical.
Is water damage in occupied homes covered?
New pipework through finished ceilings and floors is the frequent claim in any heating work.
Is ground source work covered, including movement?
Trenching and boreholes beside a dwelling bring the ground movement exposure of any deep dig.
Is refrigerant handling within the wording?
Refrigerant under pressure with recovery and leak obligations attached is a declared activity.
Does the limit match social housing contracts?
Retrofit programmes and social housing work generally specify £10 million rather than £5 million.
Factually, here is what we do against those questions. We treat professional indemnity as the core cover because the exposure is a heat loss calculation rather than a leak, we check performance and running cost disputes sit inside it, we confirm ground source work including trenching and boreholes is covered with the movement position clear, and we tell you to record every declined emitter upgrade in writing. We are a broker, so it goes to several insurers rather than one.
We also insure plumbers, heating and gas engineers and drilling contractors, so design calculations, water in occupied homes and boreholes are familiar ground here.
What Moves The Price
Every policy is priced on the business behind it. These are the things that move the premium:
- Whether professional indemnity covers heat loss and design
- Whether ground source work including boreholes is carried out
- Whether drilling is subcontracted or done in house
- Domestic, social housing and commercial split
- Whether you supply equipment as well as installing
- Refrigerant handling and certification held
- The limit of indemnity your contracts require
- Claims history, including performance disputes
We are a broker, so we take it to several insurers rather than quoting one. Call 02382 000820 for a quote.
What We Need To Quote
- The systems you install, air source, ground source and hybrid
- Whether you carry out heat loss calculations and design
- Whether ground loops or boreholes are installed, and by whom
- Domestic, social housing and commercial split
- Certification held, including MCS and F gas
- How performance and running cost figures are presented
- The limit of indemnity required, and who requires it
- Any claims in five years, including performance disputes
Cover that often goes with this
The gaps we most often find sitting next to this policy.
- PlumbersThe wet system, and water in occupied homes.
- Heating and gas engineersThe system being replaced, and the same water risk.
- Solar panel installersThe other low carbon retrofit, with the same figures exposure.
- Drilling contractorsBoreholes, if you subcontract the drilling.
- Energy and renewablesThe wider renewables page.
- Talk to a brokerTell us whether you do the heat loss calculations.
Common questions
What insurance do heat pump installers need?+
Professional indemnity as the core cover, because the exposure is the heat loss calculation and system design rather than a leak: a system that cannot heat the house is a financial loss with nothing damaged. Then public liability at £5 million domestically and £10 million on social housing and commercial retrofit contracts, water damage cover for pipework in occupied homes, ground works cover where you install loops or boreholes, employers' liability at a £5 million statutory minimum, refrigerant handling within the wording, and products liability where you supply equipment.
Am I liable if a heat pump does not heat the house properly?+
Potentially, and it is the claim this trade actually gets. A heat pump must deliver the building's heat loss at a low flow temperature, so an optimistic heat loss calculation, fabric improvements the client intended but never made, or undersized emitters mean the system cannot keep up on cold days or has to run hotter and cost more. Nothing has failed; the design was wrong. Record the method, the fabric assumptions and where they came from, room by room heat loss, design flow temperature, and anything the client declined such as radiator upgrades.
What if the client says the running cost is higher than quoted?+
That is a performance dispute and it turns on what was quoted and what was explained. A quoted efficiency assumes a design flow temperature, and if the installation never achieves it the real cost is higher. Heat pumps also behave differently from boilers: they work best running continuously at low temperature, radiators feel cooler, hot water recovery is slower, and a system left on a boiler-style schedule costs more. So explain the operation in writing at handover, set the controls properly and record the settings, and state what the quoted cost assumed.
Does ground source work need different insurance?+
It needs checking, because it is groundworks with a heating system attached. Horizontal loops mean trenching across a garden with services, drainage, tree roots and reinstatement the client cares about. Vertical boreholes mean drilling to depth with arisings, water strikes and plant close to a house. Both are excavation near a dwelling, so establish whether your policy covers subsidence and ground movement at all. Trace services before breaking ground, record the condition of the house and hard landscaping first, and agree reinstatement in writing.
Who is responsible if a neighbour complains about unit noise?+
It is usually a dispute rather than an insured claim, which is why the siting decision matters. A substantial external unit on a wall or base, running at night close to a neighbour's window or a boundary, produces objections and occasionally planning difficulty. Site it for acoustics and for permitted development rather than for the shortest pipe run, and record the siting decision and what the client was told about it. That record is what protects you when a neighbour objects months later and the client says nobody warned them.
Who insures heat pump installers in the UK?+
It is written both as a plumbing and heating trade and as a renewables specialism, and the difference matters because a general heating policy may cover the installation while leaving the design exposure uninsured. It is placed mostly through brokers. What separates placements is whether professional indemnity covers heat loss calculations and design, whether performance and running cost disputes sit inside it, whether ground source work including boreholes and ground movement is covered, and whether refrigerant handling is within the wording.
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