About Synergy
Build Your Boiler
Most boiler companies compete on speed and price. We built Synergy around something different — clarity and responsibility. Too many homeowners experience vague quotes, unexpected extras on installation day, and installers who disappear once the job is finished. We believe a fixed price only means something if it has been properly verified first.
That is why we confirm the full scope before booking, check the details that others overlook, and agree everything upfront. From quotation to commissioning, we take ownership of the entire process — including certification, warranty registration, and aftercare. We specialise in boiler replacement and heating system upgrades across London, delivering installations that are not just compliant, but carried out properly. Our work is structured, transparent and professional, because when it comes to heating your home, guesswork should never be part of the job.
Why Choose Us
Fixed Price – Verified First
We built our process around one principle. A fixed price must be checked before installation day.
That Means:-
• We verify flue routes, condensate runs and access.
• We confirm system condition.
• We review property layout.
• We agree the full scope before booking.
Our Commitment
1
Predictable Costs
We believe a fixed price should mean exactly that. Before any installation date is confirmed, we verify the full scope of work — from flue routes to system condition — so there are no last-minute surprises. Clear inclusions, agreed scope, and transparent pricing give you confidence from day one.
2
Clear Communication
From initial enquiry to final handover, we keep you informed at every stage. You know what is happening, when it is happening, and what is included. No vague wording, no rushed explanations — just straightforward updates and structured process.
3
Proper Certification
Every installation is completed by Gas Safe registered engineers and commissioned correctly. We handle all required documentation, including Benchmark certification and manufacturer warranty registration, ensuring your heating system is compliant and fully protected.
4
Reliable Aftercare
Our responsibility does not end on installation day. We remain accountable for our work, offering ongoing support and guidance if needed. When you choose us, you choose a company that stands behind its installation.