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Expert advice, industry insights, and practical guides on building management systems, energy efficiency, and building automation technology.

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HVAC SystemsFeatured

Why the Frost Stat Is on the Extract Side of a Plate Heat Exchanger

On a plate heat exchanger AHU the frost protection reads the extract, not the incoming fresh air, and engineers rewire it believing it to be a mistake. Why the ice forms on the extract side, how pack frost protection differs from the coil frost stat, and what actually triggers a defrost.

11 Oct 20269 min read

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Latest Articles

HVAC Systems

What Is a Recuperator AHU, and How Does It Compare With a Thermal Wheel?

A recuperator AHU recovers heat through a static plate pack; a thermal wheel does the same job with a rotating matrix and moves moisture with it. What separates them, the efficiency figures the manufacturers actually publish, and the different point schedule each type lands on a controls contractor.

11 Oct 20269 min

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BMS Technical

AHU Controls: How Air Handling Unit Control Sequences Actually Work

A full guide to AHU control sequences: start/stop and optimum start, the damper sequence, fan control, coil sequencing through a deadband, CO₂ demand ventilation, heat recovery by device type, both frost protections, and what to prove at commissioning before you accept a unit.

11 Oct 202612 min

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Case Studies

24V Window Actuator Wiring After a School Roof Replacement

Royal Harbour Academy, Ramsgate: eight weather-damaged 24V window actuator feeds re-cabled in 4 mm² fire-resistant cable, AHU control cabling drawn back and re-terminated, and extract fans wired back to the BMS during a roof replacement.

2 Oct 20267 min

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HVAC Systems

VAV Installation: TROX VAVs & Sontay CO₂ on a Trend BMS

A real VAV installation on a refurbished office floor: four TROX TA-Silenzio extract VAVs and Sontay duct CO₂ sensors wired back to a Trend panel two floors up. Core-by-core terminations, the signal-range and mode checks that decide whether the floor works, and what good looks like at handover.

28 Sept 20269 min

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BMS Technical27 Apr 202613 min

Distech BMS Systems: ECLYPSE, EC-Net and Open Protocol Building Controls

Everything you need to know about Distech BMS systems — ECLYPSE controllers, EC-Net 4 supervisor, Allure interfaces, RESTful API integration, and how Distech compares to Trend for UK commercial buildings.

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BMS Technical27 Apr 202616 min

Trend BMS Systems: The Complete Guide to Trend Building Management

Everything facilities managers, M&E contractors, and building owners need to know about Trend BMS systems — from IQ3 and IQ4 controllers to IQVISION, 963 end of life, upgrade paths, and what a properly specified Trend installation looks like.

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BMS Maintenance27 Apr 202611 min

Why Every FM Company in Kent Needs a Dedicated BMS Partner

FM companies across Kent are managing buildings with BMS platforms they don't fully understand — and the cost of that gap shows up in every energy bill, every tenant complaint, and every reactive callout. Here's why a dedicated BMS partner changes the equation.

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BMS Maintenance27 Apr 202614 min

BMS Support for Property and Building Management Companies in London and Kent

Property and building management companies across London and Kent are under mounting pressure to deliver energy performance, tenant comfort, and MEES compliance — but most don't have a specialist BMS contractor on their books. Here's why that's costing them.

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BMS Technical22 Apr 202614 min

Commercial Leak Detection: BMS-Integrated Systems vs Standalone IoT Sensors

Organisations lose 15-25% of water consumption through undetected leaks. This guide compares BMS-integrated leak detection against standalone IoT sensors — costs, response times, protocols, and which approach suits your building.

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