Division 01 — Commercial

Mechanical & M&E Contracting

We work with main contractors and developers as specialist mechanical sub-contractors on new-build residential and commercial schemes across London. Ready to price your next scheme.

What We Deliver

Full Mechanical Packages

From groundworks through to commissioning — every system, managed in-house, by one accountable team.

New Build Residential

Complete mechanical packages for multi-unit residential developments.

  • Full M&E design-and-install
  • Plant room installation
  • Communal heating & HIU systems
  • Mechanical ventilation & fire duct
  • Sprinkler systems
  • Cold water services

Boiler & Plant Rooms

Design, installation and commissioning of central plant rooms.

  • Ideal EvoMax & commercial boilers
  • Pressurisation units
  • Expansion vessels & header sets
  • BMS interface & controls
  • O&M manual production

Heating Systems

Centralised and distributed heating for new-build and refurbishment.

  • District heating networks
  • Heat interface units (HIU)
  • Underfloor heating
  • Radiator circuits
  • Thermal stores

Ventilation & Fire Duct

Mechanical ventilation and fire duct for residential & commercial schemes.

  • Mechanical ventilation (MVHR)
  • Fire duct & smoke control
  • Kitchen & bathroom extract
  • Ductwork design & installation
  • Commissioning & air testing

Sprinkler Systems

Compliant with BS EN 12845 and BS 9251.

  • Residential sprinkler systems
  • Commercial sprinkler systems
  • BS 9251 & BS EN 12845 compliance
  • Pump sets & tank installations
  • Commissioning & witness testing

Cold Water Services

Mains-fed and boosted systems, backflow prevention.

  • Mains water infrastructure
  • Booster sets & storage
  • RPZ valve installations
  • Legionella risk compliance
  • Water regulations sign-off

Commissioning & Handover

Full system commissioning and structured handover.

  • System flushing & chemical treatment
  • Hydraulic balancing
  • Commissioning reports
  • O&M manuals
  • Resident induction support

Refurbishment & Fit-Out

Mechanical works within occupied or partially occupied buildings.

  • Like-for-like system replacement
  • Pipe upgrades & re-routes
  • Bathroom & kitchen fit-out
  • Planned maintenance contracts
  • Emergency response

PPM & Reactive Maintenance

Planned and reactive maintenance across London & the South East.

  • Planned preventative maintenance (PPM)
  • Reactive breakdown response
  • Boiler & plant room servicing
  • HIU maintenance contracts
  • Compliance documentation
Completed Projects

Work We're Proud Of

New Build Residential · Full Mechanical Package · Principal M&E Contractor

105–108 Fulham Palace Road

Hammersmith, W6 · London
34 Apartments Full Mechanical Package Plant Room HIU to All Units Ideal EvoMax Boilers JET Pressurisation Mechanical Ventilation Fire Duct Commercial & Residential Sprinklers BMS Interface Practical Completion 2025
View Full Case Study →
New Build Residential · Mechanical, Plumbing & Fit-Out

Primrose House

Weybridge, Surrey
8 Apartments Cold Water Tank & Booster Set Gas Distribution Combi Boilers Bathroom & Kitchen Fit-Out Ventilation
View Full Case Study →
Coming Next

Your Project Here

Get in Touch →
Why Choose Us

What Makes E J Smart Different

We're not a box-ticker. A hands-on team with real project experience, real accreditations, and a reputation we protect on every job.

01

In-House Management

Every project is directly managed and supervised by our own team. We own the programme, the quality, and the outcome — with no buck-passing down the line.

02

Proven on Complex Schemes

We've delivered full M&E packages on multi-storey residential developments as principal mechanical sub-contractor, with direct accountability to the main contractor from day one.

03

Supply Chain Experience

Trusted labour supply partner to established heating contractors delivering maintenance to London boroughs in social and private sectors.

04

Fully Insured & Accredited

Gas Safe registered, full public liability and employer's liability insurance, and Constructionline Gold accreditation.

Gas Safe Registered
Constructionline Gold
Fully Insured
WRAS Approved
London Based
Let's Talk

Start a Conversation

Whether you're a main contractor with an upcoming scheme, a developer building your supply chain, or exploring prequalification — get in touch and we'll come back to you promptly.

LocationLondon, United Kingdom
HoursOpen 24 Hours · 7 Days a Week