Luxury Residential Case Studies London
In-depth documentation of high-end plumbing and heating installations completed by RARE in London's finest homes — from Grade II listed mansion flats to six-storey Belgravia townhouses. Each project records the specific problem, the technical solution and the verified outcome: premium boiler specification, multi-zone smart controls, underfloor heating design, discreet leak detection and full system replacements.
Mayfair, Belgravia, Knightsbridge, Hampstead, Marylebone, Notting Hill and surrounding prime London areas. Commercial and portfolio contracts are documented separately.
Technical expertise for demanding properties.
Premium Boiler Specification
ATAG, Viessmann, Vaillant and Worcester Bosch selected by heat loss calculation and noise performance — not catalogue defaults.
Smart Control Integration
Heatmiser NeoHub 2 systems with per-room zoning, floor sensing and multi-device access for complex multi-zone properties.
Underfloor Heating Design
Low-profile overlay systems, manifold specification and integration with existing boilers — designed at architect stage.
Discreet Leak Detection
Acoustic detection equipment pinpoints concealed leaks beneath screed and tile — minimal disruption to high-end finishes.
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Latest Case Studies
Hot Water Cylinder Pressure Loss in Belgravia: Case Study
A Belgravia apartment’s unvented cylinder kept losing pressure. See how RARE Plumbing identified the expansion vessel fault and restored reliable hot water.
Cold Radiators in Mayfair: Zoned Heating Case Study
A Mayfair home had cold radiators in one heating zone. Discover how RARE Plumbing traced the control and circulation fault without disrupting the property.
Underfloor Heating Not Warming in Hampstead: Case Study
A Hampstead property had uneven underfloor heating. Learn how RARE Plumbing isolated the manifold and control issues to restore comfortable, even warmth.
Heating System Redesign in Marylebone Townhouse
A five-storey Marylebone townhouse with persistent uneven heating, an oversized boiler and no zone control — how RARE identified five underlying faults and delivered a 22% energy saving.
Vaillant ecoTEC Plus Installation — Mayfair Townhouse
A 15-year-old Worcester Bosch boiler in a five-storey Mayfair townhouse was failing repeatedly. RARE replaced it with a Vaillant ecoTEC Plus 30kW in a single day — including a full power flush, magnetic filter and Heatmiser NeoHub 2 upgrade. The client now has a 10-year warranty, zero sludge contamination and seamless app-based heating control across four independent zones.
Heatmiser NeoHub Multi-Zone Installation — Marylebone
A six-bedroom Georgian townhouse in Marylebone was heating 14 separate rooms from a single, ancient Honeywell programmer — with no zonal control at all. RARE installed a complete Heatmiser NeoHub 2 system with 14 independent zones, app access across three devices, and individual room schedules tailored to the household routine. Energy bills dropped by an estimated 25–30% within the first month.
Megaflo Cylinder Replacement — Knightsbridge
A Knightsbridge client arrived home on a Friday evening to water pooling around the base of the airing cupboard and no hot water. RARE diagnosed a catastrophically failed Megaflo expansion vessel, sourced a replacement 210-litre Heatrae Sadia Megaflo Eco that evening, and had it installed and commissioned by Saturday afternoon — navigating extremely restricted access without a single scratch to the surrounding fixtures.
Full UFH Installation — Hampstead Extension
A Victorian detached house in Hampstead gained a 120m² ground floor extension with architect-specified wet underfloor heating across 8 independent zones. RARE designed the system, confirmed the existing Vaillant boiler had the capacity, installed a low-profile 18mm overlay system to protect ceiling heights, and integrated everything with the existing Heatmiser NeoHub — bringing the total property to 12 independently controlled zones.
Full System Power Flush — Primrose Hill
Two winters of cold radiators, one boiler service from another company that missed the real problem entirely. RARE's water quality test confirmed the diagnosis immediately: severe magnetite sludge throughout the entire primary circuit. A full 16-radiator MagnaCleanse power flush cleared the system in a single day. Every radiator in the house was hot by evening.
Worcester Bosch Greenstar Installation — Notting Hill
A cracked heat exchanger meant a Gas Safe engineer had to condemn the existing Baxi boiler on a Thursday morning in February — leaving five bedrooms and four floors without heating. RARE specified a Worcester Bosch Greenstar 8000 Life 30kW, planned an entirely new compliant flue route around a rear extension, and had the property fully heated again by Friday evening, with a 12-year warranty registered and a Tado smart thermostat configured.
Daikin Multi-Room AC Installation — South Kensington
A high-net-worth client in a South Kensington mansion block needed air conditioning across four rooms — but the building management company would accept no visible pipework on the primary facade, no units visible from the street, and required pre-approval for all external works. RARE specified a Daikin 5MXM90 multi-split system, secured building management approval before a single tool was lifted, routed all pipework internally or through service voids, and completed the two-day installation with zero visible trunking in any living space.
Full Central Heating System Upgrade — Belsize Park
A full renovation of a five-bedroom Edwardian semi in Belsize Park demanded a complete central heating system replacement — new ATAG boiler, 18 designer radiators in a custom RAL colour, two-zone Heatmiser controls, and all ground floor pipework concealed in service voids to meet the architect's brief. RARE were involved from design stage through to commissioning, and the installation was completed in five days without a single specification error.
Viessmann Vitodens 100W Installation — Pimlico
A Pimlico solicitor's boiler failed beyond repair the week before Christmas. Access was through a narrow utility corridor. RARE specified a Viessmann Vitodens 100W for its compact footprint and quiet operation, installed and commissioned it in a single day, and had heating and hot water restored before Christmas — with a 10-year warranty registered and a new Heatmiser NeoStat thermostat configured.
Concealed Leak Detection & Repair — Marylebone
A Marylebone rental flat had a slow concealed leak causing water damage to the flat below. The bathroom floor had recently been tiled with expensive Italian porcelain. RARE used acoustic detection equipment to pinpoint the leak exactly, removed just five tiles, repaired the compression joint failure beneath the screed, matched the original tile, and left the floor looking indistinguishable from the day it was laid.
ATAG One Boiler Installation — Belgravia
A six-storey Belgravia townhouse with a master bedroom directly above the boiler cupboard needed the quietest possible combi boiler replacement. RARE specified an ATAG One 25 — one of the lowest-noise wall-mounted boilers available in the UK — and installed it in a single day, with a Heatmiser NeoHub 2 upgrade and five-zone recommissioning. The client confirmed it was inaudible from the room above.
Heatmiser NeoHub Installation — Hampstead Heath
A Hampstead homeowner had a five-bedroom house with five separate heating zones and five separate programmers — one per zone, none of them synchronised and none accessible remotely. RARE consolidated the entire system onto a single Heatmiser NeoHub 2 with five NeoStat thermostats, floor sensors on the ground floor timber zone, and full app control across the household's devices. The house now runs from one app, with independent schedules per zone and remote access from anywhere.
Lateral Apartment Power Flush & System Rebalance — Knightsbridge
A Knightsbridge lateral apartment had a complete power flush and system rebalance following a boiler service that flagged severe water quality issues. Eight radiators across the apartment were partially blocked with magnetite sludge — three were barely warm. RARE carried out a full MagnaCleanse flush, fitted a Fernox magnetic filter and rebalanced the system. Every radiator in the apartment was at full temperature by early afternoon.
Electric Boiler Replacement — Marylebone Mansion Flat
A Grade II listed mansion flat in Marylebone had been running on a 22-year-old Heatrae Sadia electric boiler that was beyond economical repair — intermittent heating, rising energy bills and no spare parts available. RARE specified a modern EHC electric combi boiler, navigated the listed building constraints on flue-free installation, upgraded the electrical supply to handle the new load, and had the flat fully heated within a single day — with no gas certification required and a 5-year warranty registered.
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Reviewed by RARE Plumbing London Engineering Team
Gas Safe Registered Heating Engineers · Reviewed 14 October 2026