Low kWh / TR
Retrofits and Upgrades
Your existing plant doesn't need replacing — it needs upgrading.
Comfort RH engineers retrofit programs that transform ageing chillers, package units and pump sets into modern, efficient systems: inverter compressors, EC fans, microprocessor control and VFD-driven pumps, all without the capital cost of new equipment.
Four upgrades, one efficient plant
Compressor Replacement
From: Fixed-speed compressors
To: Inverter-driven screw & scroll compressors
Non-inverter compressors that cycle hard on and off are replaced with inverter-driven units that modulate continuously between roughly 25% and 100% of capacity — matching the real building load instead of chasing it. Soft starting removes the mechanical shock of every compressor trip, extends component life and cuts compressor energy by up to 40%.
EC Fan Conversion
From: Standard belt-driven centrifugal fans
To: Electronically commutated (EC) plug fans
Belt-driven fans lose energy in every pulley, bearing and slip — and belts are a maintenance item forever. EC fan modules are direct-drive with motor efficiencies up to 90%, stepless variable airflow, lower noise and no belts to replace. Fan energy drops by up to 70% at part-load speeds.
Controller Upgrades
From: Basic electromechanical controllers
To: Advanced microprocessor controllers
Chillers and package units still running on basic controllers are upgraded to advanced microprocessor control — PID capacity staging, adaptive setpoint control, precise leaving-water temperature regulation, comprehensive fault history and alarm logging, with BMS integration and remote monitoring built in.
VFD-Driven Pumps
From: Constant-speed water pumps
To: Variable frequency drive (VFD) controlled pumps
Standard pumps running flat-out against throttling valves waste energy around the clock. VFD-driven pumps track the chilled-water delta-T and trim speed to actual demand — eliminating throttling losses, enabling soft start and cutting pump energy dramatically at part load.
Belt-Driven Fan
EC Plug FansWhy retrofit
A modern plant inside your existing equipment
Every upgrade is engineered as part of one program — surveyed, designed, installed and commissioned by the same team, so the new inverter compressor, EC fans, microprocessor controller and VFD pumps work as a single controlled system instead of four separate fixes.
- Lower kW/TR across the plant — savings visible on your next utility bill
- Soft-starting components that extend equipment life and cut breakdowns
- Remote monitoring and fault history for proactive maintenance
- Fraction of the capital cost of replacing the whole plant
Running ageing chillers, package units or pumps? We'll audit your plant and quote the upgrade path.
Discuss Your Project