Plate Heat Exchanger Replacement in London & the M25
Replacement exchangers are sized on the actual duty rather than physical match, then proved on flow and temperature rise before handover. We cover plate heat exchanger replacement 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.
Plate Heat Exchanger Replacement explained
Replacement exchangers are sized on the actual duty rather than physical match, then proved on flow and temperature rise before handover. Every visit starts with a check of the surrounding system, because plate heat exchanger replacement 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.
- Duty and kW sizing
- Brazed versus gasketed
- Connection sizes
- Post-fit delta T proving
Symptoms we get called to
The usual trigger for a call is a fouled exchanger that can no longer deliver design temperatures. 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: a fouled exchanger that can no longer deliver design temperatures
- 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.
- Duty and kW sizing
- Brazed versus gasketed
- Connection sizes
- Post-fit delta T proving
Cost, response times and guarantee
Plate Heat Exchanger Replacement 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
Plate Heat Exchanger Replacement across London
Customers usually call us about plate heat exchanger replacement when they notice a fouled exchanger that can no longer deliver design temperatures. 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.
Plate Heat Exchanger Replacement sits within our plate heat exchangers work. Plate heat exchanger replacement, cleaning and flushing for domestic hot water, HIUs and commercial plant. 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 Alfa Laval, SWEP, Danfoss, Kelvion, APV 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 plate heat exchanger replacement 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 plate heat exchanger replacement 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 plate heat exchanger replacement 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 plate heat exchangers services
These faults often appear together — each service has its own page with costs and what we check.
Plate Heat Exchanger Cleaning
The usual trigger for a call is falling output and rising return temperatures on a scaled unit. Other signs wo…
Plate Heat Exchanger Flushing
The usual trigger for a call is debris and magnetite from a dirty primary circuit. Other signs worth acting on…
Blocked Plate Heat Exchanger
The usual trigger for a call is hot water that runs hot for seconds then cools away. Other signs worth acting …
Gasketed Plate Heat Exchanger Repair
The usual trigger for a call is a gasketed pack weeping between the plates. Other signs worth acting on early …
PHE Servicing
The usual trigger for a call is planned maintenance on plant room heat exchangers. Other signs worth acting on…
Commercial Plate Heat Exchanger Repair
The usual trigger for a call is a plant room exchanger failing to hold building hot water demand. Other signs …
Domestic Hot Water Plate Heat Exchanger
The usual trigger for a call is a combi or HIU DHW exchanger scaling up in hard water. Other signs worth actin…
See every service on our plumbing and mechanical services index, or read about underfloor heating repair London.
Book plate heat exchanger replacement 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