Fan Coil Unit Services
Fan Coil Unit Commissioning in London & the M25
Commissioning of new and replacement fan coil units, setting flow rates, fan speeds and controls to design and issuing full commissioning records. We cover fan coil unit commissioning for homeowners, landlords, managing agents and commercial sites across every London borough and the wider M25. Engineer time is £120+VAT per hour with a one hour minimum, and parts are always quoted in writing before they are fitted.
Quick answer
Who provides fan coil unit commissioning in London, and what does it cost?
London HVAC Pro provides fan coil unit commissioning in London and the M25 using F-Gas certified engineers. Engineer time is £120+VAT per hour with a one hour minimum and no call-out fee, parts are quoted in writing before fitting, and same-day attendance is usually available. Call 07427 826446 to book.
More answers: faults and causes, service costs, areas we cover.
Fan Coil Unit Commissioning explained
Commissioning of new and replacement fan coil units, setting flow rates, fan speeds and controls to design and issuing full commissioning records.
- Flow rate setting against design: Distinguish a pump fault from air, restrictions or closed valves elsewhere in the circuit.
- PICV and commissioning valve setting: Check movement, control command and the effect on flow together; the actuator and valve body can fail independently.
- Fan speed tap selection: Operation, mechanical condition and control demand must be separated before condemning the drive.
- Air-on and air-off verification: Confirm the component identity and model-specific requirements before deciding whether adjustment, testing or replacement is appropriate.
- Control and BMS point proving: Compare the input reading, requested output and actual equipment response; an error code is a starting point, not a diagnosis.
- Set point and dead band configuration: Confirm the component identity and model-specific requirements before deciding whether adjustment, testing or replacement is appropriate.
- Commissioning record sheets: Confirm the component identity and model-specific requirements before deciding whether adjustment, testing or replacement is appropriate.
Interpreting the reported fault
Check fan response, filter condition, valve operation, coil condition and condensate drainage. A working fan does not establish that the water coil is receiving the required flow.
- Reported symptom: new or replacement units that have never been properly set up
- Record when the problem started and any recent changes
- Keep fault codes and model details for the assessment
Before specifying new equipment
Define the required duty, operating hours, available space and connection routes before comparing models. Agree what commissioning and handover will cover. A product price alone is not an installed-system quote.
- Provide the unit location, access-panel position, controller behaviour and whether neighbouring units show the same problem.
Labour and the work to be agreed
Engineer time is £120+VAT per hour with a one hour minimum. The time and materials required depend on the diagnosed fault and access. Ask for the repair scope, any additional parts and the return-to-service checks before proceeding.
- £120+VAT per hour, one hour minimum
- Confirm the parts and labour required for the specific fault
Fan Coil Unit Commissioning across London
A fan coil transfers heat between room air and a water coil. The fan, control valve and building water supply all affect room output.
A fan, valve actuator or controller can often be assessed independently. Whole-unit replacement also requires access, coil duty, noise and connection compatibility to be considered.
Provide the unit location, access-panel position, controller behaviour and whether neighbouring units show the same problem.
Related fan coil unit services services
These faults often appear together — each service has its own page with costs and what we check.
Fan Coil Unit Servicing
The usual trigger for a call is weak airflow, dusty grilles and units that no longer hold set temperature. Oth…
Fan Coil Unit Maintenance
The usual trigger for a call is rising energy use, recurring faults and no planned maintenance in place. Other…
Multiple Fan Coil Unit Servicing
The usual trigger for a call is dozens or hundreds of units across floors needing servicing in one programme. …
Fan Coil Unit Repair
The usual trigger for a call is a unit that has stopped running, stopped conditioning or started leaking. Othe…
Fan Coil Unit Fault Finding
The usual trigger for a call is an intermittent fault nobody has been able to pin down. Other signs worth acti…
Fan Coil Unit Operational Inspection
The usual trigger for a call is units suspected of underperforming but never formally tested. Other signs wort…
Fan Coil Unit Replacement
The usual trigger for a call is a unit beyond economic repair, corroded or no longer supported by parts. Other…
Fan Coil Unit Cleaning
The usual trigger for a call is dusty grilles, musty smells and dirt visible on the coil face. Other signs wor…
See every service on our plumbing and mechanical services index, or read about underfloor heating repair London.
Book fan coil unit commissioning in London
Tell us what the system is doing and we will send an engineer with the right parts. £120+VAT per hour, one hour minimum.
Call 07427 826446Frequently Asked Questions
Engineer labour from £120 + VAT per hour, with a 1-hour minimum. Parts and materials are quoted separately before work begins.
What's included in Fan Coil Unit Commissioning
- Site survey of the space, duty and access
- Equipment selection matched to the required duty
- Installation scope and connection routes agreed in writing
- Commissioning and performance readings at handover
- Handover of controls and maintenance requirements
- Refrigerant handling by F-Gas certified engineers, with records kept
How Fan Coil Unit Commissioning works
- 1
Tell us about the site
Call or book online with the rooms or equipment involved and the site postcode.
- 2
Site survey
An engineer checks the space, duty, plant position, routes and electrical supply.
- 3
Written quote
You receive the installation scope and price in writing before any work is booked.
- 4
Installation
Equipment is installed to the agreed scope at a time that suits the site.
- 5
Commissioning and handover
Operating readings are taken and the controls are explained.
Fan Coil Unit Commissioning prices
| Item | Price |
|---|---|
| Engineer labour | £120 + VAT per hour |
| Minimum charge | One hour |
| Parts and materials | Written quote before work starts |
| Installation or replacement | Fixed written quote after survey |
See all rates on our prices page or read why customers choose us.
Fan Coil Unit Commissioning: scope, checks and next steps
Commissioning of new and replacement fan coil units, setting flow rates, fan speeds and controls to design and issuing full commissioning records.
What the reported symptom tells us
new or replacement units that have never been properly set up. Record when this occurs, what changed beforehand and whether other equipment is affected. These observations narrow the investigation; they do not prove which part has failed.
A fan coil transfers heat between room air and a water coil. The fan, control valve and building water supply all affect room output.
Separate the possible causes
Check fan response, filter condition, valve operation, coil condition and condensate drainage. A working fan does not establish that the water coil is receiving the required flow.
Repair or replacement?
A fan, valve actuator or controller can often be assessed independently. Whole-unit replacement also requires access, coil duty, noise and connection compatibility to be considered.
Before specifying new equipment
Define the required duty, operating hours, available space and connection routes before comparing models. Agree what commissioning and handover will cover. A product price alone is not an installed-system quote.
What each check helps establish
- Flow rate setting against design
- Distinguish a pump fault from air, restrictions or closed valves elsewhere in the circuit.
- PICV and commissioning valve setting
- Check movement, control command and the effect on flow together; the actuator and valve body can fail independently.
- Fan speed tap selection
- Operation, mechanical condition and control demand must be separated before condemning the drive.
- Air-on and air-off verification
- Confirm the component identity and model-specific requirements before deciding whether adjustment, testing or replacement is appropriate.
- Control and BMS point proving
- Compare the input reading, requested output and actual equipment response; an error code is a starting point, not a diagnosis.
- Set point and dead band configuration
- Confirm the component identity and model-specific requirements before deciding whether adjustment, testing or replacement is appropriate.
- Commissioning record sheets
- Confirm the component identity and model-specific requirements before deciding whether adjustment, testing or replacement is appropriate.
Details to include with your job request
Provide the unit location, access-panel position, controller behaviour and whether neighbouring units show the same problem.
Related fault and service guidance
Before your engineer visits
- Note the fault code shown on the display.
- Photograph the rating plate so we can identify the model and refrigerant.
- Write down when the problem started and whether it is constant or intermittent.
- Move stock out of failing fridges or cold rooms into a working unit if you can.
- Check the isolator and circuit breaker without opening any electrical panels.
- Keep previous service sheets and F-Gas leak-check records ready for the engineer.
- Tell us about roof, ladder, permit or out-of-hours access requirements when you book.
- Avoid repeatedly resetting equipment, because this can clear useful fault history.
- Let us know if water, ice or unusual noise is coming from the unit.
- Confirm who on site can sign off the written quote before extra work starts.
- Mention any recent building works, power cuts or changes to the room layout.