Practical insights on energy, building automation, and compliance for buildings and industry, by the Cobler team.
HVAC & Chiller PlantsPutrajaya's ministries have run without their own chillers since 1999. How district cooling works in Malaysia, what RT and RTh mean on the bill, why delta-T can cost you, and what running a plant at 0.7 kW/RT taught us about the economics.
HVAC & Chiller PlantsIndicative RM per RT ranges for replacing a chiller in Malaysia, plus the hidden half of the project: rigging, piping, electrical, controls and downtime. And the measurement that should happen before you sign anything.
HVAC & Chiller PlantsCooling towers combine warm water, biofilm and aerosol generation, which is why they remain the classic Legionella source in Malaysian buildings. Here are the operational controls, shutdown procedures and leading indicators that keep the risk managed.
HVAC & Chiller PlantsHow much outdoor air a Malaysian office actually needs, why CO2 above 1,000 ppm is the practical warning sign under ICOP IAQ 2010, and how demand-controlled ventilation stops you paying to cool and dry air nobody needed.
HVAC & Chiller PlantsICOP IAQ 2010 caps total fungal count at 1,000 cfu/m3 and recommends 40 to 70% RH, yet most tropical buildings drift outside that band during unoccupied hours. Here is why mould grows in air-conditioned Malaysian facilities and the order in which to fix it.
HVAC & Chiller PlantsA practical decision guide for Malaysian buildings: where the size crossover between DX and chilled water actually sits, how the two compare on kW/RT, redundancy, space and lifecycle cost, and why one gets metered while the other fails quietly.
HVAC & Chiller PlantsA spec sheet says 3.5 kW cooling from 1 kW of power. That is not broken physics. An aircon moves heat instead of making it, and the ratio that measures the leverage is COP.
HVAC & Chiller PlantsTwo near-identical aircon units, one says INVERTER and costs more, and nobody can say why. Here is what is actually different inside, what it saves, and the payback you can do yourself.
HVAC & Chiller PlantsOn 2 April 2026, Malaysia ordered all government offices to set air-conditioning no lower than 24C. The facts, the RM maths under RP4, and why the rule failed in 2011 and 2023: verification.