Survey & heat-loss assessment
Room-by-room heat loss and hot-water demand measured against the property's actual fabric, not assumed from its floor area.
Central heating installation · Chelsea SW3 & SW10
Central Heating Installation Chelsea
PEP designs and installs complete central heating systems for Chelsea's terraces, mews properties and high-specification refurbishments — boiler plant, hot water, distribution, zoning and controls, engineered as one system from survey to commissioning.
16years' London experience
01coordinated installation team
04disciplines under one roof
Chelsea · SW3 & SW10
Tight plots, tall terraces and mews hidden behind the street line.
Chelsea rarely gives a heating system much room to work with.
Old Chelsea's terraces, the mansion blocks along Chelsea Embankment, and the mews cottages tucked behind King's Road and Sloane Square rarely offer a generous plant room. Utility space is often a single small cupboard or a lower-ground corner, sized for a different era of heating altogether. Many of these properties sit close to Royal Hospital and the wider Brompton streets, where access is on foot rather than by van, and a new system has to be routed discreetly rather than fitted wherever is easiest.
PEP treats each property as its own design problem — planning the plant room, the route in, and the finished routing around the building we're actually working in, not a standard specification carried over from a larger house down the road.
TerracesMews propertiesRefurbishments
Plan the room, then the system
The plant room decides what the rest of the system can do.
In a Chelsea property, the space you're given usually decides the specification — so we design to the room first, not the other way round.
Plant-room design for restricted space
Boilers, cylinders and headers laid out to fit a genuinely small utility room or basement corner, with access preserved for the life of the system.
Coordinated services
Gas, water, electrical supply and drainage planned together, so the plant room works as one room rather than separate trades arriving in sequence.
Maintainable by design
Isolation valves, labelled circuits and real access clearances built in from the start, not fitted in afterwards around whatever space is left.
Boiler plant & distribution
Sized to the property, not the other way round.
A single high-output boiler suits many Chelsea terraces; a larger property, or one with awkward plant access, often does better with two smaller units working together.
We choose between a single boiler and a cascade based on demand and the room available, not as a default — a cascade adds output and some redundancy, but only earns its place where there's genuinely the plant space and the load to use it. Hydraulic separation and pumped zone headers are specified where the circuits need decoupling from each other, not fitted as standard on every job.
- Single or cascade boiler selection, sized to demand
- Hydraulic separation where the circuits need it
- Balanced radiator & underfloor-heating circuits
- Filtration & water-quality protection
Hot water & storage
Enough hot water for every floor, at the same time.
A tall Chelsea terrace with a loft conversion, or a mews house with every room in use, asks more of the hot-water system than its footprint suggests.
We calculate simultaneous demand across bathrooms and kitchens, recovery time and secondary circulation so hot water reaches a top-floor bathroom as quickly as one on the ground floor, then specify unvented cylinders sized to the property with the safety fittings and discharge routes a domestic installation requires.
CapacitySized to bathroom count
RecoveryFast reheat under demand
CirculationSecondary loop where needed
ProtectionExpansion, discharge & isolation
Zoning, controls & commissioning
Controls built around how the house is actually used, floor by floor.
A narrow Chelsea terrace with a different function on every floor — reception rooms low down, bedrooms above, a converted loft or lower-ground room at either end — needs zoning that reflects that stacking, not a single thermostat trying to average the whole house. We design the zone valves, sensors and actuators around the real floor plan, wire the electrical interface into the same scope as the pipework, then prove the sequence during commissioning rather than assuming it will work because the parts are specified correctly.
01Demand is detected
02The correct zone opens
03Pump and heat source respond
04Sequence is tested, balanced & recorded
From survey to handover
A clear route from survey to a system you understand.
Clear decisions before work starts. Coordinated installation on site, alongside any wider refurbishment programme. A system proven in operation, with the paperwork to match, before we leave.
Survey
We assess demand, existing services and how equipment will actually reach the plant room — critical on mews and other restricted-access properties.
Design
Heating, hot water, gas, electrical and controls developed as one coordinated scope, sequenced against the wider refurbishment where one is running.
Install
Our own heating and electrical teams deliver the agreed system, testing interfaces as work progresses and keeping noise and disruption to a minimum.
Commission
We fill, flush, balance, sequence, test and document the system, then hand over with the information you need to operate and maintain it.
Installer statusVaillant Advance Installer
Installer statusViessmann Trained Installer
Registered businessGas Safe No. 520933
Domestic Installer SchemeCertified since 2010
Areas we cover
Chelsea and the surrounding SW3 and SW10 postcodes.
We design and install central heating systems across Chelsea and neighbouring streets, including Old Chelsea, King's Road, Chelsea Embankment, Sloane Square, Royal Hospital and Brompton, along with the wider SW3 and SW10 postcodes.
This service sits alongside PEP's wider central heating and plant-room work across London, our Chelsea boiler replacement and commissioning service, and system cleaning for existing Chelsea heating circuits.
For general plumbing in the area, see our Chelsea plumbing service. See all the London areas we cover, or contact PEP to discuss a Chelsea heating system.
Before we begin
Useful answers for a Chelsea heating project.
If the project already has drawings, send them over. If it is still taking shape, bring us in early and we will help define the practical route forward.
07825 268 43401Our boiler cupboard is small and already full of pipework — can a proper system still fit?
Usually, yes. Chelsea utility cupboards and lower-ground plant spaces are often small by modern standards, so we plan the layout — boiler, cylinder, headers and controls — to that exact space at survey stage, choosing compact or wall-hung equipment and a serviceable arrangement rather than assuming a standard-sized plant room is available.
02We only have mews or side access — how do you get boilers and cylinders in?
We confirm the access route at survey — doorway widths, stairs, and whether equipment needs to go in by hand rather than trolley — and choose equipment and a delivery sequence that actually fits it. On restricted mews access this can affect which cylinder size or boiler format is practical, which is exactly why it's decided before ordering, not on installation day.
03Will the plant room cause noise or vibration in the rooms above or next door?
It shouldn't, if it's specified for that from the outset. We select pumps and mountings for the application, isolate pipework from the building structure where it passes through occupied areas, and consider what sits directly above or alongside the plant room — particularly relevant in terraced Chelsea properties where a neighbouring wall may be close by.
04Our house is tall and narrow with a different use on every floor — how is that zoned?
We zone by how each floor is actually used rather than splitting the house evenly — a ground-floor reception, upper-floor bedrooms and a converted loft or lower-ground room each get their own valve and control logic, and the sequence is tested during commissioning rather than assumed to work because the parts are specified correctly.
05Should we choose one large boiler or two smaller ones?
It depends on the demand and the room available, not a fixed rule. A single high-output boiler is simpler and suits many Chelsea terraces; a cascade of two smaller units can suit a larger property, add some redundancy, or fit a space that won't take one large boiler's footprint. We size and recommend based on your survey, not a standard specification.
06What do we get at handover, and who signs off the gas and electrical work?
You get a commissioned, tested system and the documentation to operate and maintain it, including Gas Safe certification and, where electrical work is involved, NICEIC certification for the work carried out. We explain the controls and zoning in person at handover rather than leaving you to work it out from a manual.
Before the plant room is fixed
Decide the plant room before the rest of the space is built around it.
Tell us the postcode, send any drawings you already have, and outline the programme. We will set out the likely scope and the sensible next step for your Chelsea heating installation.