Blog

Practical insights on energy, building automation, and compliance for buildings and industry, by the Cobler team.

Digital power meters with Milesight LoRaWAN Modbus controllers in an electrical panel

LoRaWAN Explained: Long-Range Wireless for Energy Data

LoRaWAN gets energy data off scattered meters with no cabling and no per-device SIM fees. How it works - in plain analogies - and why it suits large-site energy monitoring.

Jun 5, 2026Read
Rows of solar panels in a field under a blue sky

What Is KWTBB? The RE Levy on Your TNB Bill

That small 1.6% KWTBB line on your bill is the Renewable Energy Fund levy. What it funds, who pays it, and the 2025 change that lets some businesses stop paying it.

Jun 5, 2026Read
White HVAC supply air ductwork below a building roof

Air-Side HVAC Efficiency in Malaysian Buildings

Chiller plants get the attention, but the air side - fans, ducts, AHUs, FCUs - runs its own energy bill and decides comfort. Where air-side energy goes, and how to cut it.

Jun 5, 2026Read
Weathered, empty industrial interior with light through aged windows, entropy at work in a building

The Second Law of Buildings: Why Buildings Decay

A building is a structure in a slow, constant argument with entropy. On the physics of why everything you operate is quietly falling apart - and what it means to fight it.

Jun 4, 2026Read
Rooftop chiller plant with air-cooled chiller units and chilled water piping

Chilled Water Delta-T: The Key to Better kW/RT

Delta-T is the hidden lever on chiller plant efficiency. Here is why it decides kW/RT, what causes low delta-T, and how to tune a plant for the best efficiency.

Jun 4, 2026Read
Kuala Lumpur commercial building skyline representing a multi-site property portfolio

Multi-Site Energy Management: One Screen for Every Building

Running a portfolio means seeing every building on the same terms at once. Multi-site energy management is the difference between knowing which sites waste money and guessing.

Jun 3, 2026Read
Building services plant room with chillers, pumps and heat exchangers

What Makes a Well-Designed BMS

Two buildings with identical hardware can run 20% apart. The difference is BMS design - sequences, sensors, open protocols, and data an operator can use.

Jun 2, 2026Read
A person working through a fan of documents at a dark desk

The Sustainability Manager's Impossible Spreadsheet

Handed a target in tonnes of carbon and a tool measured in spreadsheet tabs, the sustainability manager has to report data they can't reach. Why credible data changes everything.

Jun 1, 2026Read
Building HVAC plant with air ducts and chilled-water pipework against an office tower

How HVAC Air Side and Water Side Work Together

Building cooling is a relay between the water side (chillers, pumps) and the air side (AHUs, coils), meeting at the cooling coil. Here's how they connect - and fail.

May 28, 2026Read