HIU No Heating in London & the M25
Heating-only failures usually point to the heating control valve or the flat thermostat wiring rather than the plate exchanger. We cover hiu no heating 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.
HIU No Heating explained
Heating-only failures usually point to the heating control valve or the flat thermostat wiring rather than the plate exchanger. Every visit starts with a check of the surrounding system, because hiu no heating problems are frequently caused by something upstream — pressure, controls, water quality or an earlier installation shortcut. You get a plain explanation of what we found and what it will cost to put right.
- Heating circuit valve
- Pump and bypass
- Thermostat and wiring
- Differential pressure valve
Symptoms we get called to
The usual trigger for a call is radiators cold while hot water still works, or both cold. Other signs worth acting on early include unexplained noise, water where it should not be, pressure that will not hold, and temperatures that drift away from where they were set. Left alone these get more expensive, so an early diagnostic visit is almost always the cheaper route.
- Reported fault: radiators cold while hot water still works, or both cold
- Noise, vibration or unusual running behaviour
- Pressure loss, discharge or visible water
- Temperature or performance that has drifted over time
What the engineer checks on site
The engineer tests each element in turn rather than swapping parts hopefully. Findings are recorded, photographed where useful and sent to you afterwards, which matters for landlords, managing agents and anyone keeping compliance records for a building.
- Heating circuit valve
- Pump and bypass
- Thermostat and wiring
- Differential pressure valve
Cost, response times and guarantee
HIU No Heating is charged at £120+VAT per hour with a one hour minimum, and most straightforward jobs are completed within that first hour or two. Parts are quoted in writing before fitting, workmanship is guaranteed for 12 months and we do not charge a separate call-out fee on top of the hourly rate.
- £120+VAT per hour, one hour minimum
- No separate call-out fee
- Written quote before any parts are fitted
- 12-month workmanship guarantee
HIU No Heating across London
Customers usually call us about hiu no heating when they notice radiators cold while hot water still works, or both cold. Rather than guessing, the engineer works through the system in a fixed order, isolates the component at fault and shows you what has failed before anything is replaced. That approach keeps the first visit productive and means you are not paying for a second engineer to repeat the same tests a week later.
HIU No Heating sits within our hiu & communal heating work. Heat interface unit repair, servicing and component replacement for apartments on communal and district heating networks. Because we handle the surrounding system as well as the individual component, faults that cross between pumps, controls, valves and hot water get solved once instead of being passed between trades.
We work on equipment from Danfoss, Alfa Laval, Evinox, SAV, Thermal Integration Satchwell and other major manufacturers, and we carry the common service parts for these on the van. Where a specialist part has to be ordered, we tell you the lead time and the price on the day rather than leaving you waiting for a quote.
Coverage runs across Central, North, South, East and West London and out to the M25 — including Camden, Islington, Westminster, Chelsea, Hammersmith, Croydon, Bromley, Ealing, Barnet, Poplar and the surrounding Home Counties towns. Same-day attendance is normally available for urgent hiu no heating work, and out-of-hours visits can be arranged for commercial sites that cannot lose service during trading hours.
Landlords, letting agents and facilities managers use us for hiu no heating because the paperwork comes with the work: a written record of what was tested, photographs of the components we found at fault, the parts fitted and the readings taken at handover. That record goes straight into a property file or a planned maintenance schedule, and it gives you evidence if a tenant, an insurer or an inspector asks what has been done.
Booking hiu no heating is straightforward. Call 07427 826446 and describe what the system is doing, or request a visit online and we will confirm a slot the same day wherever the diary allows. There is no call-out fee on top of the hourly rate, parts are quoted before they are fitted, and all workmanship carries a 12-month guarantee. If we believe replacement is better value than repair we will say so, with prices for both, so the decision stays yours.
Related hiu & communal heating services
These faults often appear together — each service has its own page with costs and what we check.
HIU Repair
The usual trigger for a call is a flat on communal heating with no hot water or lukewarm radiators. Other sign…
HIU Servicing
The usual trigger for a call is an annual service due under the block maintenance schedule. Other signs worth …
HIU Engineer
The usual trigger for a call is a managing agent needing a specialist rather than a general plumber. Other sig…
Heat Interface Unit Servicing Contract
The usual trigger for a call is a block needing scheduled HIU maintenance across many flats. Other signs worth…
HIU Plate Heat Exchanger Replacement
The usual trigger for a call is hot water that has gradually got weaker and cooler over months. Other signs wo…
HIU Control Valve Replacement
The usual trigger for a call is heating or hot water stuck permanently on or permanently off. Other signs wort…
HIU Actuator Replacement
The usual trigger for a call is an actuator that buzzes, sticks or shows no drive. Other signs worth acting on…
HIU Strainer Cleaning
The usual trigger for a call is reduced flow and poor hot water caused by network debris. Other signs worth ac…
See every service on our plumbing and mechanical services index, or read about underfloor heating repair London.
Book hiu no heating 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 826446