TMVs & Thermostatic Mixing Valves
TMV Servicing in London & the M25
Thermostatic mixing valve servicing with strainers cleaned, cartridges checked and outlet temperatures reset, all recorded for your compliance file. We cover tmv servicing 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 tmv servicing in London, and what does it cost?
London HVAC Pro provides tmv servicing 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.
TMV Servicing explained
Thermostatic mixing valve servicing with strainers cleaned, cartridges checked and outlet temperatures reset, all recorded for your compliance file.
- Strainer and check valve clean: Check movement, control command and the effect on flow together; the actuator and valve body can fail independently.
- Cartridge condition: Confirm the component identity and model-specific requirements before deciding whether adjustment, testing or replacement is appropriate.
- Outlet temperature set: Confirm the component identity and model-specific requirements before deciding whether adjustment, testing or replacement is appropriate.
- Failsafe test record: Confirm the component identity and model-specific requirements before deciding whether adjustment, testing or replacement is appropriate.
Interpreting the reported fault
A planned visit should establish condition and identify deterioration. An existing fault may need separate diagnosis and parts. Agree which assets, cleaning tasks, functional checks and records are included, and base the interval on manufacturer guidance and operating conditions.
- Reported symptom: annual thermostatic mixing valve maintenance for compliance records
- Record when the problem started and any recent changes
- Keep fault codes and model details for the assessment
Maintenance is not a breakdown repair
A planned visit should establish condition and identify deterioration. An existing fault may need separate diagnosis and parts. Agree which assets, cleaning tasks, functional checks and records are included, and base the interval on manufacturer guidance and operating conditions.
- Confirm equipment model and access before the visit
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
TMV Servicing across London
Related tmvs & thermostatic mixing valves services
These faults often appear together — each service has its own page with costs and what we check.
TMV Replacement
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TMV Temperature Testing
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TMV Failsafe Testing
The usual trigger for a call is proving the valve shuts down if the cold supply fails. Other signs worth actin…
TMV2 Servicing
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See every service on our plumbing and mechanical services index, or read about underfloor heating repair London.
Book tmv servicing 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 TMV Servicing
- Condition inspection of each listed asset
- Cleaning tasks agreed for the equipment type
- Functional checks of controls and safety devices
- Readings recorded against the previous visit
- Written findings, with any repairs quoted separately
- Refrigerant handling by F-Gas certified engineers, with records kept
How TMV Servicing works
- 1
Agree the asset list
Tell us which units are included and how they are used.
- 2
Set the interval
Visit frequency is based on manufacturer guidance and operating conditions.
- 3
Planned visit
The engineer inspects, cleans and tests each listed asset.
- 4
Findings
Readings and defects are recorded; repairs are quoted separately.
- 5
Follow-up
Agreed remedial work is booked, and the next visit is scheduled.
TMV Servicing prices
| Item | Price |
|---|---|
| Engineer labour | £120 + VAT per hour |
| Minimum charge | One hour |
| Parts and materials | Written quote before work starts |
| Planned maintenance contract | Quoted per asset list |
See all rates on our prices page or read why customers choose us.
TMV Servicing: scope, checks and next steps
Thermostatic mixing valve servicing with strainers cleaned, cartridges checked and outlet temperatures reset, all recorded for your compliance file.
What the reported symptom tells us
annual thermostatic mixing valve maintenance for compliance records. 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.
Maintenance is not a breakdown repair
A planned visit should establish condition and identify deterioration. An existing fault may need separate diagnosis and parts. Agree which assets, cleaning tasks, functional checks and records are included, and base the interval on manufacturer guidance and operating conditions.
What each check helps establish
- Strainer and check valve clean
- Check movement, control command and the effect on flow together; the actuator and valve body can fail independently.
- Cartridge condition
- Confirm the component identity and model-specific requirements before deciding whether adjustment, testing or replacement is appropriate.
- Outlet temperature set
- Confirm the component identity and model-specific requirements before deciding whether adjustment, testing or replacement is appropriate.
- Failsafe test record
- Confirm the component identity and model-specific requirements before deciding whether adjustment, testing or replacement is appropriate.
Related fault and service guidance
Before your engineer visits
- Write down when the problem started and whether it is constant or intermittent.