We Specialise Mechanical Services
Sigma provide a full range of mechanical services from the design and build concept through to full installation,project managment and routine planned preventative maintenance.
As well as installation we also offer a dynamic ‘Planned Preventative Maintenance Service’ which includes a 24 hr call out facility.
Our team of multi disciplined engineers enables first time fix solutions, ensuring maximum performance of customers assets and a reliable approach to life cycle replacment.
Energy solutions are now considered within every service and we aim to maximise efficiency of each installation throughout its service life.
Our range of mechanical services includes:
- A/C installation and maintenance
- HVAC installation and maintenance
- Duct work cleaning and inspection
- Plumbing services to include installation and maintenance
- Pump maintenance and repair
Our Mechanical Service
Heating Systems
Installation, upgrade and maintenance of commercial and large-scale heating systems.
- Boiler replacements and upgrades
- Plant room works
- Radiators and heating distribution networks
- System flushing and optimisation
Ventilation & Air Handling
Providing comfortable, healthy and regulated internal environments.
- Ventilation unit installation and replacement
- Air handling systems
- Ductwork modifications and upgrades
- Workplace ventilation compliance
Hot & Cold Water Services
Safe, efficient water supply and distribution systems.
- Hot and cold domestic services
- Water storage, pressurisation and distribution
- Pipework installation and modifications
- Legionella safety considerations
Gas Services (Gas Safe Registered Engineers)
Safe installation, testing and servicing of gas systems and appliances.
- Gas pipe installations
- Gas appliance commissioning and certification
- Safety testing and compliance documentation
Mechanical Maintenance (Planned & Reactive)
Ensuring system reliability and performance over time.
- Preventative maintenance schedules
- Reactive repair support
- System efficiency checks
- Long-term asset lifecycle planning
Plumbing & Pipework
General plumbing and pipework for building operation and maintenance.
- Washroom refurbishments
- Pipe repairs and replacements
- Leak investigation and remedial works
How We Work
Simple → Effective → Secure
Initial consultation
We discuss your needs and assess the site.
Tailored specification
We design the right solution (whether upgrade, install or refurbishment).
Professional installation
Our directly-employed workforce carries out the work to the highest standard.
Testing & hand-over
All installations fully tested and safe to hand over
Maintenance & support
We support you after installation, offering ongoing service and maintenance.
Contact Form
Contact Details
Ready to secure your London or Kent property with best-in-class building services? Contact Sigma Building Services today for a no-obligation site survey.
FAQs
What mechanical services do Sigma BS provide?
We provide heating systems, ventilation and air handling, hot and cold water services, gas services, plumbing, pipework and planned and reactive maintenance.
Do you work in occupied buildings?
Yes. We routinely carry out mechanical works in live commercial, education and healthcare environments, ensuring safety and minimal disruption.
Are your engineers qualified and certified?
Yes. Our mechanical engineers and gas operatives are trained, experienced and hold relevant industry qualifications, including Gas Safe registration.
Can you replace or upgrade commercial heating systems?
Yes. We design and replace boilers, plant equipment, distribution pipework and heating controls for improved efficiency and reliability.
Do you install or upgrade ventilation systems?
Yes. We install and maintain fresh air, extract and air handling systems to meet comfort, air quality and compliance standards.
What areas do you cover?
We serve London, Kent and the South East, including Bromley, Bexley, Dartford, Gravesend, Medway, Maidstone and surrounding areas.
Can you provide maintenance for existing mechanical systems?
Yes. We offer planned preventative maintenance and reactive call-out support to ensure systems continue running safely and efficiently.
Do you work with schools, academies and education environments?
Yes. We have extensive experience delivering mechanical works in classrooms, plant rooms and welfare areas, often out of hours to avoid disruption.
Can you install or repair hot and cold water services?
Yes. We provide new installations, repairs and upgrades to water supply and distribution systems, including pipework and storage systems.
Do you offer commercial plumbing services?
Yes. Our team handles washroom upgrades, pipe repairs, leak investigation, flushing and plumbing maintenance.
Are you able to carry out Gas Safe certified works?
Yes. All gas installations, testing and commissioning are completed by Gas Safe registered engineers.
Can you survey or assess existing mechanical systems?
Yes. We carry out condition surveys, performance assessments and lifecycle planning to help clients make informed decisions.
Do you provide plant room refurbishment?
Yes. We replace legacy systems, reorganise layouts and upgrade control equipment to improve safety, efficiency and reliability.
Can you assist with reducing energy consumption?
Yes. We can advise and implement system upgrades, efficiency improvements and modern controls to reduce running costs.
Do you work with industrial or warehouse facilities?
Yes. We deliver mechanical services across industrial estates, logistics environments, manufacturing plants and production spaces.
Can refurbishment and mechanical upgrades be phased?
Yes. We can schedule works in stages to keep buildings operational throughout.
Do you provide emergency mechanical repairs?
Yes. We provide responsive support for urgent issues affecting heating, ventilation or water systems.
Do you provide full installation documentation and certification?
Yes. All works are completed with required handover packs, compliance certificates and system documentation.
Do you offer long-term service or maintenance contracts?
Yes. We support facilities managers, estates teams and property owners with ongoing planned maintenance agreements.
How do I request a quotation?
Simply contact our office by phone or email to arrange a site visit and receive a free, no-obligation proposal.
Accreditations
Our Clients
