Insights

Notes from the plant room

Practical writing on controls, commissioning, electrical works and energy - from the engineers doing the work.

9 articles

Trend IQ Upgrades • 6 min read

Trend IQ3 end of life: what it actually means for your building

Obsolete outstations don't fail politely. Here's how to plan an IQ3 to IQ4 migration before a spares shortage plans it for you.

18 June 2026

Control Panel Manufacture

What good looks like: a control panel build quality checklist

Form 4 compliance is the floor, not the ceiling. Nine things we check on every panel that leaves our workshop.

7 May 2026 • 5 min read

Commissioning

Commissioning is not a week at the end of the job

Seasonal fine-tuning, witnessed testing and soft landings - why the last 5% of a project decides how the building performs.

21 March 2026 • 4 min read

Leak Detection

Leak detection: where the cable actually needs to go

Addressable sense cable is only as good as its routing. A practical guide to covering the risk, not the floor plan.

4 February 2026 • 5 min read

Energy

Five ways to cut HVAC energy before you spend a penny on plant

Schedules, setpoints, dead bands, optimum start and sequencing. The unglamorous wins hiding in your existing BMS.

15 January 2026 • 6 min read

BMS Design

What is a building management system, and does your building need one?

A plain English guide to what a BMS actually controls, what it costs to run, and when a building is big enough to justify one.

2 July 2026 • 7 min read

BMS Retrofit

How much does a BMS upgrade cost in London?

Real cost drivers on a controls upgrade, what a per point figure hides, and how to build a budget that survives contact with a plantroom.

21 July 2026 • 6 min read

Electrical Installation

EICR and commercial electrical testing explained

How often commercial installations need inspecting, what the C1, C2, C3 and FI codes mean, and how to act on a report without panic.

6 August 2026 • 6 min read

Planned Maintenance

What a good BMS planned maintenance schedule looks like

Quarterly, biannual and annual tasks that keep a controls system honest, plus the reporting that proves the visits were worth paying for.

19 August 2026 • 5 min read

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