Service 07 of 07
BMS Retrofit Projects
Replacing the brain of a building without closing it
Directly employed
engineers on site
Live buildings
phased and out of hours
Documented
test sheets and as-builts
London
and the South East
Overview
Retrofit is our specialism. We replace end-of-life control systems in occupied buildings, working out of hours and in phases so tenants keep heating, cooling and ventilation throughout the programme.
What we deliver
- 01Head-end and controller replacement
- 02Phased, out-of-hours changeover programmes
- 03Reuse of serviceable field devices and wiring
- 04Legacy protocol interfacing during transition
- 05Landlord and tenant liaison
- 06Net zero and energy reduction driven upgrades
How it works
Our approach to BMS Retrofit Projects
Condition survey
Existing system assessed for what can be kept and what must go.
Phasing
Programme built around occupancy, plant redundancy and risk.
Changeover
Out-of-hours swaps with fallback plans for every phase.
Optimise
Post-completion tuning to lock in the energy savings.
In detail
BMS retrofit projects in live London buildings
A BMS retrofit replaces an ageing building management system with a modern, supported one while the building stays occupied. We design, build panels, install and commission the new system in phases around the occupier.
Retrofits cut energy use, restore reliable control and give facilities teams a system they can actually use.
Typical projects
- Whole-system BMS replacement in occupied offices
- Migration from legacy controllers to Trend or Distech
- New front ends, graphics and remote access
- Panel replacement and field device renewal
Standards and ways of working
- ✓Phased changeover plans agreed with the client
- ✓Building Regulations Part L for replacement controls
- ✓Point-to-point testing after every phase
- ✓Full as-built records and handover training
BMS Retrofit Projects questions
Can a BMS be replaced without shutting the building?+
Yes. We phase the work plant item by plant item, usually out of hours, so the building keeps running.
Can existing wiring be reused?+
Often, yes. We survey the existing installation and reuse what is sound to reduce cost and disruption.
How much energy can a retrofit save?+
It varies by building, but replacing poor controls and strategies commonly delivers noticeable savings. We can review your current system first.
Do you handle the whole project?+
Yes. Design, panel manufacture, installation and commissioning are all delivered by our own team.
Related services
View all services →
Get started
Let's talk about
your building
Tell us what the building needs to do. We'll tell you what it takes - design, installation, commissioning, electrical works and maintenance from one team.
London & the South East - 24/7 reactive cover