Hot water that alternates between comfortable and cold
Tell us whether temperature changes happen at every hot outlet or only at one shower, and whether another tap being used seems to trigger them. Mention the type of water-heating equipment if you know it. Do not test with water that could scald or ask someone vulnerable to reproduce the symptom.
A local mixer problem and a hot-water generation fault can require different work. An enquiry should therefore include both the affected fitting and equipment details rather than request a particular replacement part. We discuss diagnosis first and the likely repair separately. Any gas-appliance inspection or work must be performed by an appropriately competent Gas Safe registered engineer.
Gas work. Any work on gas appliances or pipework must be carried out by an appropriately qualified, Gas Safe registered engineer. Tell us what the job involves and we will discuss how it will be handled before booking.
For a South Kensington apartment or house, include the room and floor where the fault appears. Where several homes occupy one building, access, service responsibility and the ability to isolate water may depend on the managing agent as well as the resident.
Give the exact residential entrance if it differs from the main street frontage. State whether there are steps, a lift or restricted delivery periods. Any proposed change outside the property should be checked against the correct address and ownership permissions.
- Which outlets fluctuate and which remain steady
- Whether simultaneous water use changes the symptom
- Boiler or cylinder details and any visible fault display
- One hour minimum charge.
- Before any extra work, we give you an estimated duration and expected labour cost to agree.
- We do not promise fixed turnaround times; visits are arranged with you directly.
- Call or bookRing 020 3858 0085 or book an engineer with your full address.
- Share building detailsConcierge, parking, lift access, key holders and where stopcocks or boilers sit.
- Agree before workEstimated duration and expected labour cost agreed before anything extra.
Good to know.
Is fluctuating shower temperature always a boiler fault?
No. A shower fitting, the supply arrangement or the hot-water system can contribute. Comparing the behaviour of other outlets helps frame the inspection but does not replace diagnosis.
What does heating cost in South Kensington?
£120 + VAT per hour (£144 inc VAT), with a one hour minimum. Before any extra work we give an estimated duration and expected labour cost for you to agree.