Service and maintenance

Planned servicing, fault finding and repairs for air conditioning, heating and ventilation systems.

IMAGEEngineer servicing an outdoor air conditioning or heat pump unit

Building services need regular checks and maintenance to keep working reliably for years. We service the systems we install and systems fitted by other companies.

Why servicing matters

  • Efficiency. Dirty filters and coils reduce output and increase electricity costs.
  • Reliability. A fault in one small part can stop the whole system. Regular checks find problems before a breakdown.
  • Warranty. Manufacturer warranty terms may require commissioning and service records.
  • Legal requirements. Commercial systems containing refrigerant must be leak checked regularly.

Our services include

  • Planned maintenance. Cleaning, checks and adjustment on an agreed schedule.
  • Diagnostics. Finding the cause of a fault or loss of performance.
  • Repairs. Fault fixing and part replacement.
  • Systems fitted by others. Inspection, condition report and recommendations.
  • Maintenance agreement. Scope, frequency and cost fixed in advance.

Systems we service

Air conditioning

Without regular servicing an air conditioner loses efficiency, and faults are found late, when repairs cost more.

  • Cleaning filters, grille and indoor coil
  • Cleaning the outdoor coil
  • Checking condensate drainage
  • Refrigerant leak and pressure checks
  • Electrical and controls diagnostics
  • Testing in cooling and heating modes

Heat pumps and heating

A heat pump should be checked once a year. We service heat pumps and wet systems with radiators and underfloor heating.

  • Outdoor unit and clear airflow around it
  • Heating system pressure
  • Controls, weather curve and settings
  • Radiators, underfloor heating and cylinder
  • Advice on economical operation

Ventilation and heat recovery

Ventilation filters are usually changed once a year or on the manufacturer's schedule. Clogged filters reduce airflow.

  • Filter replacement
  • Cleaning grilles and extract fans
  • Checking fans and the heat exchanger
  • Airflow and drainage checks
  • Electrical and controls diagnostics

Equipment we service

  • Split, multi-split, VRF, ducted and cassette air conditioning
  • Air-to-water and air-to-air heat pumps
  • Radiators, underfloor heating, cylinders and heating controls
  • Supply and extract units with heat recovery
  • Extract fans and kitchen extract

Why work with us

  • All systems in one place. Air conditioning, heating and ventilation.
  • Clear results. You receive a report and recommendations after each visit.
  • No surprises. Repairs are carried out only with your approval.
  • One contact. For every maintenance question.

Types of service

One-off visit

Diagnostics, servicing or repair on request, at a time agreed with you.

Planned maintenance

Visits at agreed intervals, with a record of the work carried out.

Repairs

Arranged separately from planned maintenance, only after your approval.

Maintenance agreements

Scope and frequency set for the specific system, home or business.

Homes and flats

An annual heat pump check, air conditioner cleaning and ventilation filter changes, arranged at a convenient time.

Offices, shops and cafés

A maintenance agreement with a visit schedule, mandatory leak checks included and minimal disruption to trading.

For commercial premises

  • Systems with 5 tonnes CO₂ equivalent of refrigerant or more must be leak checked at least every 12 months.
  • A leak that is found must be repaired as soon as possible and the system rechecked within one month.
  • Air conditioning systems over 12 kW must have an energy assessment at least every 5 years.
  • We agree the visit schedule with these requirements in mind.

How a service visit works

Request

Tell us about the system, its model and the symptoms.

Site visit

Inspection, cleaning and checks carried out on site.

Report

Findings and recommendations explained after the visit.

Agreed works

Repairs or adjustments carried out only with your approval.

Next service

Date of the next planned visit agreed in advance.

Frequently asked questions

What services do you offer?

Planned maintenance, diagnostics and repair of air conditioning, heat pumps, heating and ventilation systems.

Why service a system that is under warranty?

A warranty does not replace cleaning and checks. Repairs after a breakdown cost more, and the manufacturer may require service records.

How often is servicing needed?

A heat pump should be checked once a year. Ventilation filters are usually changed once a year or on the manufacturer's schedule. Commercial systems containing refrigerant are checked on the schedule set by law.

Do you service systems fitted by other installers?

Yes. On the first visit we inspect the system and give recommendations.

Who can work on refrigerant?

Only technicians with an F-gas qualification.

What should I tell you when I book?

The system type, the model if you know it, the symptoms and the site address.

Book a service visit

Describe the system and what is happening with it. We will agree a visit time.

+44 7511 730947info@barsum.co.uk152 Chelmsford Avenue, Romford, London RM5 3XH
Request a service visit