Mechanical Engineering Company in London – Commercial & Residential Building Services
At Masterfix, our mechanical engineers deliver specialist maintenance, repair, and compliance services for complex residential and commercial buildings across London.
From plant rooms and communal heating systems to apartment-level assets, we keep mechanical systems efficient, compliant, and reliable, protecting occupants, assets, and operational continuity.
Mechanical Engineering
Accreditations & Compliance
Gas Safe Registered Engineers, City & Guilds Qualified Mechanical Engineers, Manufacturer Trained on HIU, FCU & MVHR systems, Legionella Awareness & L8 / HSG274 Working Practices, Safe Contractor Approved, Fully insured, compliance-led workforce
Mechanical Expertise for Complex Buildings
Our mechanical engineers are trusted in high-density, high-value and technically demanding environments and always provide the highest quality of service. We understand how heating, hot water and ventilation systems interact with electrical, plumbing and life-safety systems—allowing us to deliver safe, coordinated and efficient solutions across entire buildings.
Reactive When Needed.
Strategic by Design.
Mechanical failures impact comfort, safety and reputation. Masterfix Maintain provides 24/7 mechanical response backed by data-led maintenance strategies. We don’t just restore service—we identify inefficiencies, reduce energy waste and help clients plan for long-term system resilience.
Mechanical Engineering FAQs
Yes. Our engineers are available around the clock for critical heating, hot water and ventilation failures.
Absolutely. HIUs, CIUs and communal plant rooms are a core part of our service offering.
Yes. All PPM programmes are tailored to the building, systems and risk profile.
Yes. Our teams are experienced in live residential and commercial environments.
Our Full Range of Trades from
Masterfix – the UK’s Leading Main Contractors
We offer a wide range of property management and maintenance trades, so you only have to rely on one team to carry out your projects. Our team has a high level of expertise in each of these sectors.
We have a
Proven Track Record
Best-in-Class Mechanical Engineers
Highly trained professionals with deep experience in building services engineering.
Commercially Focused Delivery
Built around the needs of managing agents, asset managers and duty holders.
Integrated Multi-Trade Model
Seamless coordination with plumbing, electrical and fire safety teams.
Rapid & Accountable Response
Clear ownership, fast mobilisation and permanent solutions.
Compliance & Performance Led
Every visit supports safety, efficiency and asset longevity.