Retrofits that pay for themselves
Turnkey air-side retrofits taken from measurement to handover. Each project starts from an energy study, is quoted against a measured baseline, and is verified after commissioning so the saving is a number you can audit.
EC fan retrofit
Belt-driven fan sections replaced with EC plug fans or fan arrays: integrated drives, speed control down to actual load, no belts to tension, and redundancy when an array is used instead of a single large fan.
- Fan section survey and duty measurement
- EC fan or array selection
- Retrofit plate fabrication and fitting
- Control integration and speed setting
- Post-retrofit power measurement
- Lower fan input power at the same airflow
- Speed control without an external VFD
- Belt and bearing maintenance removed
Heat recovery & TFA addition
Ventilation air conditioned properly: a dedicated TFA unit, optionally with a heat recovery wheel on the exhaust, so fresh-air load stops being carried by terminal cooling at poor efficiency.
- Fresh-air and exhaust rate survey
- Latent load calculation
- TFA and recovery wheel selection
- Duct route and space coordination
- Installation and commissioning
- Fresh-air load moved off terminal units
- Recovered energy from exhaust air
- Stable indoor humidity at design occupancy
Coil & filter upgrade
Pressure drop is energy. Cleaned or re-selected coils and a re-specified filter train — lower resistance, longer change intervals, correct grade at each stage — usually recover a measurable share of fan power.
- Pressure drop measurement across each stage
- Coil cleaning or re-selection
- Filter train re-specification
- Bypass and gasket sealing
- Change-interval planning
- Reduced air-side resistance
- Fewer filter changes per year
- Filtration grade matched to the application
Controls & VFD projects
Plants that run flat out at part load are the most common saving on the list. Sensors, VFDs and a sequence that follows demand — shift patterns, occupancy, ambient — instead of running everything at full speed.
- Sequence and setpoint review
- Sensor and VFD installation
- Fan and pump speed control loops
- Schedule and interlock programming
- Operator handover and training
- Plant output following actual demand
- Documented sequence of operation
- Measured saving verified after handover