TMV Servicing for Preston properties
Thermostatic mixing valves protect vulnerable people from scalding, but they also create a section of warm pipework downstream where bacteria can grow. TMVs need regular servicing to make sure they still fail safe, deliver the right temperature and are free from scale and debris.
Water in Preston is generally soft. Softer water means less scale, but debris and corrosion products can still block TMV strainers and check valves, so annual in-service testing remains essential.
Preston's university campus, offices and growing student housing sector see seasonal low occupancy that needs managing.
What is included
- Mixed water temperature check against set point
- Fail-safe test by isolating the cold supply
- Cleaning and descaling of strainers, filters and check valves
- Recalibration where required
- Asset tagging and digital servicing record
- Replacement of failed valves or cartridges
How often
Manufacturers and HSG274 recommend in-service tests at least annually. Healthcare settings following HTM 04-01 may need a performance check at six to eight weeks after commissioning and then a frequency set by the results.
Legislation in England
In England, legionella duties come from the Health and Safety at Work etc. Act 1974, the Management of Health and Safety at Work Regulations 1999 and COSHH 2002, with HSE's ACoP L8 and HSG274 setting the standard. Enforcement is by HSE or the local authority, depending on the premises.
In Preston, legionella law is enforced by Preston City Council's environmental health team for offices, shops, hotels, restaurants and leisure premises, and by HSE for factories, warehouses, hospitals, schools and council-run premises. We cover all PR postcodes in and around Preston.
Frequently asked questions
How much does tmv servicing cost in Preston?
Prices depend on the size and complexity of the property. A single rented home is a short visit, while a large commercial building may take a day or more. Send us the details and we will give you a fixed price for Preston with no hidden extras.
How quickly can you carry out tmv servicing in Preston?
Get in touch with your postcode and preferred dates and we will confirm the earliest available appointment in Preston.
Is TMV servicing a legal requirement?
There is no law that names TMV servicing, but duty holders must control the risks of scalding and legionella, and HSG274 and manufacturers expect TMVs to be tested and maintained. In healthcare, HTM 04-01 sets the expectation.
What is the difference between TMV2 and TMV3?
TMV2 valves are certified for domestic use. TMV3 valves meet the more demanding NHS specification for healthcare and care settings.