Air-to-water and air-to-air systems

Commercial Heat Pump Services in London

Heat pumps are central to decarbonising commercial heating. We install, service and repair commercial heat pump systems across London.

  • London & Greater London
  • 24/7 contact line
  • Commercial buildings only
Row of rooftop outdoor units on a commercial building with an engineer in hard hat and high-visibility vest
Illustrative image

In short

Commercial heat pump services cover the installation, servicing and repair of air-to-water and air-to-air heat pumps that heat, and often cool, commercial buildings. Engineers check refrigerant circuits, coils, defrost operation, flow temperatures and controls, so systems run efficiently. Installation starts with assessing heat loads, emitters and electrical capacity to confirm a heat pump suits the building.

What heat pump services involve

  • feasibility surveys and heat load assessment for new installations
  • installation, commissioning and handover
  • coil cleaning, fan checks and defrost checks
  • flow and return temperature and water flow checks
  • refrigerant checks and F-gas leak checks where required
  • controls, weather compensation and scheduling checks

When heat pump work is needed

  • boilers are reaching end of life and you are considering alternatives
  • energy or carbon targets require lower-carbon heating
  • existing heat pumps are not reaching temperature or are icing
  • annual servicing is due

Equipment covered

Type Typical application
Air-to-water heat pumps Heating (and sometimes chilled water) via radiators, fan coils or AHUs
Air-to-air / VRF heat pumps Zoned heating and cooling in offices, retail and hotels
Hybrid systems Heat pumps working alongside existing boilers

Our process

  1. Survey. Building, existing heating, electrical supply, plant space.
  2. Proposal. Options and quotation, with assumptions stated.
  3. Installation and commissioning. To the agreed programme.
  4. Servicing. Ongoing maintenance to keep efficiency up.

Typical applications

Office refurbishments, retail units, schools and colleges, hotels and mixed-use buildings replacing or supplementing gas boilers.

Maintenance considerations

Heat pump efficiency depends heavily on flow temperatures and controls. Keep flow temperatures as low as comfort allows, keep coils clean and check that defrost cycles are working.

Compliance and safety

New installations must meet Approved Document L. Refrigerant work must be done by F-gas certified engineers. Electrical supply upgrades may be needed and must be designed and installed by competent electricians.

Coverage across London

We take heat pump enquiries across London and Greater London. See areas we cover.

Commercial Heat Pumps: frequently asked questions

Will a heat pump work in our existing commercial building?

Often, but it depends on heat loss, the emitters (radiators, fan coils or underfloor heating), the flow temperatures they need, plant space and electrical capacity. A survey and heat load assessment confirm feasibility.

Can heat pumps provide cooling as well as heating?

Air-to-air systems such as VRF heat pumps can heat and cool. Some air-to-water systems can produce chilled water. The right arrangement depends on the building's needs.

How often should commercial heat pumps be serviced?

Most commercial heat pumps should be serviced at least annually, with F-gas leak checks at the frequency the regulations require for the system's refrigerant charge.

Why is our heat pump icing up?

Frost on outdoor coils is normal in cold, damp weather and is cleared by defrost cycles. Persistent heavy icing points to a defrost, airflow, sensor or refrigerant fault that should be checked.

Are there grants for commercial heat pumps?

Funding schemes change regularly and many apply only to certain sectors. Check current GOV.UK schemes before planning a project.

UK guidance and references

Primary and industry sources relevant to this subject. Always check the current edition and how it applies to your building.

Enquiry form

Request commercial heat pumps support

Tell us about the building, the equipment and what you need. Your enquiry goes straight to the Commercial HVACS team at info@flairfacilities.co.uk.

Urgent fault or loss of cooling, heating or ventilation? Call our 24/7 contact line rather than using the form: 020 7998 9005. Attendance depends on location, engineer availability and site access.

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