Mechanical Design & Installation in Cornwall

Looking at the market: Many regional contractors talk about scale and growth. Our focus is different: delivering right first time mechanical installation with clear communication, predictable programmes and clean handovers. Clients choose Evans for local accountability, accredited quality, and integrated BMS/control expertise built into the core of our mechanical delivery.

Why choose Evans for your mechanical installation in Cornwall?

• End‑to‑end delivery: Design, install, test, commission, train and maintain—all under one roof.
• Sector expertise: New build, refurb, fit‑out and live environments.
• Programme certainty: Phased works, early risk‑reduction and responsive local teams to keep handovers on track.
• Controls integrated from day one: In‑house BMS design, panel build and commissioning to de‑risk interfaces.
• Proven in specialist environments: Cleanrooms, laboratories, healthcare and server rooms with N+1 resilience.

Core keyword focus: We handle full‑scope mechanical installation – from LTHW heating, ventilation and air conditioning to domestic water, above‑ground drainage, BMS/controls, sprinklers, insulation, and specialist lab systems.

Full‑scope mechanical installation

Heating (LTHW) & Heat Generation

• Low‑Temperature Hot Water (LTHW) Heating
• Boilers installed in position and flue installation
• Plantroom pipework installation and plantroom insulation
• Pumps installed in position, pressurisation unit & expansion vessel installed in position
• Dirt & air separator integration
• Workshop heating — 1st fix, 2nd fix and workshop radiant panels installed in position
• Underfloor heating (excluding insulation & screed)

• Mechanical and natural ventilation
• Ventilation systems (supply & extract)
• Natural ventilation supply & install
• Ductwork: Ground, First & Second Floor — 1st fix, 2nd fix, insulation
• Roof & risers ductwork installation and roof ductwork insulation
• Air handling units / heat recovery units installed in position
• Attenuators and grilles
• External louvres

• DX cooling systems and internal gas services
• Air conditioning (split/multisplit/VRF)
• External rooftop condensers installed in position
• AC to server N+1 redundancy
• Metrology clean room air con (N+1 based on 2 × 5kW split)

• Sanitaryware; domestic hot & cold water services
• Incoming gas and water; gas supply liaison
• Gasfired water heater installed in position
• Booster set installed in position; pump installed in position
• Tank supply & install; water conditioner installed in position
• Floorbyfloor: Ground/First/Second — 1st fix, 2nd fix, insulation
• Hot water cylinders
• Chlorinating rising cold main
• Soil testing

• Aboveground drainage systems (incl. internal rainwater stacks)
• Floorbyfloor stacks & drainage: Ground/First/Second
• Condensate drainage
• Acoustic insulation to drainage runs
• Laboratory drainage systems

• Sprinkler systems and dry risers
• Isolations and stripout (sprinklers) as required for refurbishments

• Fume cupboard installations for science laboratories
• Fume extract systems

• Building Management System (BMS) / controls integration
• Design, panel build, control wiring, loose controls, commissioning
• Graphics and software
• BMS (Honeywell—budget pricing available)

• Overdoor air curtain installed in position
• External louvres and internal rainwater stacks
• Kitchen services
• Extract fans & ventilation

Project delivery: from preconstruction to handover

• Testing and commissioning (mechanical & controls)
• Commissioning management
• Seasonal commissioning
• Testing / commissioning / water treatment
• Thermal insulation and commissioning
• Labelling and staff training
• O&M and log book handover
• 12 months maintenance (optional)

• Natural gas in plantroom, flue installation, plantroom pipework, pressurisation, pumps, radiators installed in position
• Roof plant (condensers, AHUs/HRUs) and risers
• Domestic water and aboveground drainage floorbyfloor sequencing

Design & Coordination

• Diversion of existing services
• Design (mechanical and BMS)