We are accredited installers for boilers by global industry leaders Worcester Bosch
and Vaillant. Here some popular boiler manufacturers we work with and install:
Exclusive up to 12-year guarantee on Worcester Bosch Boilers.
We are the leading boiler installer in Merton for over 20 years.
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Common Heating Issues in Merton
Merton homes often blend original fabric with later side-returns, lofts and garden rooms, which can expose inefficiencies in older systems. We verify pressure, map pipework and look at real usage patterns before we recommend a replacement so hidden constraints don’t follow you into a new install.
- Boilers sized for yesterday – Many Merton properties still rely on 12–20-year-old appliances chosen for different insulation levels and hot-water habits. Oversized or narrow-modulating units short-cycle, burn extra gas and falter at the morning rush. Telltale signs include radiators warming unevenly along long landings and a kettling hiss from the heat exchanger—both signals that efficiency has ebbed and a like-for-like swap would lock in the waste.
- Pressure that drops when everyone’s using water – Upper floors in Colliers Wood conversions and loft ensuites around Raynes Park often suffer weak showers and hesitant heating due to vertical risers, shared stacks and a patchwork of pipe sizes. At peak times older combis can’t hold flow. Correct output, sympathetic pipe upgrades and, where appropriate, an accumulator restore stable delivery for back-to-back showers.
- Hard-water scaling – South-west London’s water is mineral-heavy. Limescale constricts plate heat exchangers, raises operating noise and chips away at efficiency, while pushing pumps, fans and diverter valves towards early failure. We design-in filtration and scale protection so performance stays strong and maintenance predictable.
- Awkward pipe runs – Rear kitchen extensions, garden studios and top-floor bathrooms can leave hot water slow to arrive at the far end of the home. Undersized returns and meandering routes cause temperature lag between front receptions and back kitchens. We rationalise runs, prioritise draw-off points and balance radiators so rooms warm together across every storey.
- Heat loss in bay-fronted rooms – Bay windows, exposed elevations and timber floors around Merton Park require the right blend of boiler output, emitter sizing and modern controls. Without zoning and effective TRVs, a boiler alone can’t offset fabric losses. We tune the system so living areas hit temperature promptly and hold it without overshoot.
- Patchwork controls – Old wall stats, mixed TRVs and basic programmers create hot/cold pockets and needless gas spend. Smart controls with load and weather compensation smooth temperatures and trim running costs. We replace piecemeal setups with an app-managed schedule that suits daily life.
Tailored Boiler Installation Services
No two Merton households use hot water the same way. We engineer the system around the property and the people in it, not just the appliance. Model choice, flueing, water treatment and controls are selected for the borough’s real-world conditions.
- New Boiler Installation – We start with measured checks: dynamic pressure/flow under peak demand, hot-water profile, pipe sizes and the building’s thermal performance. That lets us specify a boiler that truly fits your Merton home—whether that’s a compact maisonette near Colliers Wood station, a 1930s semi in Wimbledon Chase or a larger family property by Morden Hall Park. We plan for simultaneous use (showers plus a kitchen draw), likely future changes (loft ensuite, open-plan kitchen) and the recovery rates that keep mornings smooth. Commissioning covers compliant flue routes in tight lightwells, dependable condensate drainage for basements, full system clean/treatment and precise control setup for quiet, efficient running.
- Boiler Replacement – We don’t copy old shortcuts. Pipework is adapted properly, and we clean the system—powerflush or chemical—so the new heat exchanger is protected. Radiators are balanced so rooms heat evenly from hallway to rear extension. You receive a clear handover, benchmark readings and same-day warranty registration.
- Vaillant & Worcester Bosch – As accredited installers we unlock extended warranties and pick models proven in London’s pressure realities. Wide modulation ranges, stainless-steel exchangers and strong DHW performance suit hard water and multi-bathroom living. Manufacturer support keeps spares and aftercare straightforward.
- System Upgrades – True efficiency is a system outcome. We add smart zoning with load/weather compensation, update TRVs and radiators, integrate underfloor heating where suitable, and fit magnetic filtration plus scale protection. Expect steadier temperatures, lower gas use and longer component life—especially in period conversions with varied emitters.
- Tricky Install Expertise – Discreet flue routes through lightwells, plume management near neighbours, relocations into cupboards/lofts and robust condensate solutions for lower-ground levels—we handle the London quirks so the finish looks deliberate, not improvised.
- Next-Day Availability – When diaries and stock align, we offer next-day installs across Merton. Pre-surveyed jobs move quickly: materials booked, access coordinated, waste removed and your heating restored with minimal disruption.
Our Work Ethics
“TRUST US TO TAKE CARE OF YOUR HOME”
Our Mission is to be the leading heating company in Merton by respecting our customers and their homes, and providing the highest quality of workmanship in our industry. Our Philosophy is that we can only do that with outstanding people. We always aim to employ highly skilled, committed and motivated people, with a passion for their trade.
Local Team Presence & Fast Response
We’re in Merton every week—Merton Park, Colliers Wood, Raynes Park and Morden—so we know the local housing stock and its nuances. That familiarity speeds surveys, smooths access in conversions and managed blocks, and helps us pre-empt pressure issues, scaling and control upgrades before they cause trouble. The outcome is an installation that performs properly from day one.
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WHAT OUR CUSTOMERS SAY ABOUT US
New Boiler Installation Merton – WPJ Heating
Merton’s variety—from compact maisonettes to extended family houses—calls for a heating design that matches the fabric and the routine, not just the postcode. Our survey turns real flow rates, pipe paths and daily hot-water use into a specification that serves how you live, which is why newly commissioned systems feel calmer and more predictable.
Once everything is tuned, families typically notice steadier showers, radiators warming in step and less thermostat fiddling to stay comfortable. Those improvements come from clean system water, balanced emitters and controls configured to the building—elements we set up together rather than bolt on after the event.
If you’re planning a loft ensuite, opening a kitchen to the garden or preparing a rental for dependable turnovers, we’ll factor that into today’s choices so tomorrow’s upgrades stay simple. For a new boiler installation in Merton that delivers dependable warmth now and flexibility later, choose the local team homeowners recommend.
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FAQs for Boiler Installations in Merton
What type of boiler suits smaller Merton flats best?
For most one-bath flats, a modern combi provides on-demand hot water and a compact footprint. We confirm dynamic pressure/flow so the chosen model performs on upper floors and long risers.
Can you sort weak showers at the back of long 1930s semis?
Yes—by testing pressure/flow under peak load, upgrading pipework where needed and, if appropriate, adding an accumulator to stabilise delivery.
Are flue routes through lightwells an issue in conversions?
We handle them routinely, ensuring clearance compliance, discreet terminations and safe condensate handling—vital in maisonettes and lower-ground flats.
Will you clean the system during a replacement?
Where appropriate, we powerflush or chemically clean to remove sludge/scale, protect the new exchanger and restore radiator heat-up times across all floors.
Which brands work best locally?
We typically recommend Vaillant and Worcester Bosch for efficiency, support and warranty cover, then match model/output to your hot-water pattern and pressure reality.
How quickly can you install?
Subject to survey and stock, next-day installation is often possible in Merton. We coordinate access and keep disruption low.
Ready for a New Boiler in Merton? Get a Free Quote
Call 020 7350 2511 to book your survey and get your new boiler installation in Merton underway. We’ll specify the right model, treat and protect the system water, configure smart controls and leave everything neat, balanced and ready for winter. Prefer school-day or quieter slots? We’ll arrange access, remove waste responsibly, register warranties and provide straightforward aftercare—so reliable heating and hot water just get on with the job. For rentals, we’ll supply the documents managing agents request.