London care homes, TMV3 valves and getting ready for CQC

In a care home, hot water isn't just a comfort thing. Many residents can't feel heat properly, can't move away quickly or can't tell anyone when the bath is too hot. That's why thermostatic mixing valves matter more here than almost anywhere, and why the people who run London care homes tend to want their TMV records in very good order.

Why TMV3 valves, specifically

There are two main approval schemes for TMVs in the UK. TMV2 covers valves for domestic-type use, tested against BS EN 1111 (high pressure) and BS EN 1287 (low pressure). TMV3 approves valves against the tougher specification written for healthcare, and it's the one normally expected in care settings.

The difference shows up when things go wrong. A TMV3 valve has to hold its temperature tightly when supplies fluctuate, and shut off quickly if the cold supply fails. For a resident who can't step out of the shower, those seconds count. Many valves are dual-approved, but if you're not sure what you've got, check. A domestic valve doing a care home job is one of the things we'd always flag.

Temperatures in a care home

HSE guidance for health and social care is clear that where vulnerable people could be scalded, the water at outlets they can reach needs to be kept at a safe temperature, and TMVs are the usual way to do it. The figures commonly used for TMV3 valves are 41°C for showers and washbasins, 38°C for bidets and 44°C for baths. Bath fill temperatures can be set differently where a carer is always present, but that needs to be part of your written scheme and each resident's bathing assessment, not a quiet tweak by whoever's on shift.

Meanwhile, the stored hot water still needs to be hot enough to control Legionella, as set out in HSG274 Part 2. That tension is the whole reason TMVs exist. Our TMV compliance guide explains how the pieces fit.

What CQC is looking at

We're not going to pretend we know exactly what an inspector will ask on the day, because that depends on the inspection. What we can say is that care homes in England are regulated under the Health and Social Care Act 2008 (Regulated Activities) Regulations 2014, which include requirements on safe care and treatment and on premises and equipment. Inspectors look at whether the building and equipment are safe and properly maintained, and whether the home can show it.

For hot water, "show it" usually means records. A registered manager who can pull up the TMV register and recent certificates in a couple of minutes is in a much better position than one hunting through a filing cabinet for a contractor's invoice from 2022.

What a solid TMV regime looks like

1. Know every valve. A register listing each TMV, the room, the outlets it serves, the make and approval, and the set temperature. Our asset registers are built for this.
2. Commission new valves properly and carry out in-service tests at the intervals HTM 04-01 describes, then set a routine interval based on how much each valve drifts.
3. Service on schedule. In London's hard water, with heavy daily use, six-monthly servicing is common for care homes. Your written scheme should set the interval, and the records should justify it.
4. Check temperatures between services. Routine outlet temperature checks by maintenance staff, with anything out of range reported straight away.
5. Act on failures quickly. If a valve fails its fail-safe test, the outlet is taken out of use or made safe until it's fixed.
6. Keep it all in one place, alongside your Legionella risk assessment.

The hard water bit

London's water is very hard, and care home valves run all day. Scale builds up on strainers and thermostatic cartridges, the valve gets sluggish, and the fail-safe response slows down. That's the last thing you want on a valve feeding a frail resident's shower. We descale on every visit, and we'll tell you if the interval needs to come down. There's more on this in hard London water and TMV limescale.

Fitting servicing around residents

A care home is somebody's home. We plan visits with the manager so we're not in a resident's bathroom during personal care, mealtimes or a doctor's visit. Larger homes are done over several days, a wing or a floor at a time, and every outlet goes back into use the same day. If a resident would find a stranger in their room distressing, a member of staff they know can be with us.

A typical scenario

Imagine a 60-bed nursing home in Barnet with a TMV on every en-suite basin and shower, plus assisted baths on each floor. A new registered manager takes over and finds service certificates for some rooms, nothing for others and no list of where the valves are. A sensible first step would be a combined survey and service: every valve found, labelled, serviced and recorded, with a short report of any that aren't TMV3 approved or have no access panel. From there, a six-monthly schedule keeps it on track, and the manager has a register ready for whoever asks next.

London care homes we cover

There are care homes all over London, but there are plenty in the leafier boroughs of North London, such as Barnet and Enfield, and in South London, from Croydon and Bromley to Sutton and Kingston. We cover the lot, and group visits to keep things efficient. Running more than one home? We can put them all on one schedule.

The short version

Use TMV3 valves, keep them on a proper schedule, check temperatures in between and keep records you can find in a hurry. That protects residents first, and it makes any conversation with CQC, your insurer or your own quality team far easier.

See our TMV servicing page for what each visit covers. If you run a group with care homes and other properties, our HMO and licensing post covers the residential side.