Short technical notes for owners, facility teams and project teams.

Energy Audit

What a Practical Building Energy Audit Should Deliver

A useful audit should do more than list equipment. It should identify the major energy users, confirm operating conditions, quantify saving measures, explain payback and separate quick operational improvements from capital works.

HVAC Optimisation

Why Chiller Plant Performance Depends on Operation, Not Equipment Alone

Chiller efficiency is affected by control sequence, condenser water temperature, chilled water reset, pump operation, fouling, sensor accuracy and maintenance discipline. Good optimisation starts with measurement before adjustment.

Commissioning

Retro-Commissioning as a Low-Risk Path to Better Building Performance

Retro-commissioning helps existing buildings recover intended performance by checking system operation, controls, balancing, BAS settings and fault symptoms. It is often the bridge between maintenance complaints and capital replacement.

IAQ

Indoor Air Quality Requires Engineering, Operation and Evidence

IAQ issues should be assessed through ventilation adequacy, filtration, humidity, contaminant sources, maintenance condition and measured data. The best recommendations are specific enough for facilities teams to act on.

Chiller Diagnostics

ClimaCheck and the Next Level of Chiller Performance Measurement

ClimaCheck is a Swedish diagnostic technology for HVAC and refrigeration systems. Unlike traditional chiller efficiency checks, it measures refrigerant-side temperatures and pressures together with secondary media temperatures and live electrical input. The software analyses the vapour compression cycle and component performance across the condenser, evaporator, compressor and expansion device.

By using refrigerant enthalpy data, ClimaCheck can calculate kW/RT, cooling capacity, COP, refrigerant mass flow and chilled water flow. This gives facility teams a more accurate view of chiller performance and can reveal meaningful energy-saving opportunities, even in plants that appear to be operating well.