Benchmark of Energy-saving Renovation for HVAC in Medical Buildings – EC Fan Upgrade, Saving Nearly 400,000 KWh Annually

Large general hospitals operate 24/7 all year round, with central air handling units running under continuous high load. Exorbitant electricity bills and frequent maintenance have long been core operational challenges for medical institutions.EBST Technology has delivered an energy-saving renovation project for AHU air handling units at a Grade A tertiary general hospital. By replacing conventional belt-driven fans with high-efficiency EC array fans, we have achieved measurable and outstanding energy-saving results.

ⅠBefore Renovation: Multiple Loss Pain Points of Conventional Belt-Driven Fans

The original old AC belt-driven fans have obvious drawbacks:

1. Severe mechanical friction loss from belts and bearings keeps the overall unit energy consumption at a high level.

2. The equipment generates excessive heat during operation. Large high-temperature areas can be observed via thermal imaging, adding extra heat dissipation load to the equipment room.

3. Transmission components are prone to aging and wear. Regular replacement of spare parts leads to continuously rising logistics maintenance costs.

4. Poor speed regulation performance fails to flexibly adjust air volume according to time-shifted demands of outpatient departments, wards and operating rooms, resulting in massive ineffective power consumption.

II. Renovation Solution: Full Replacement with EBST High-Efficiency EC Array Fans

Remove the original individual belt-driven fans and fully replace them with modular brushless EC fan arrays:

 ✅ Eliminate the belt drive structure to cut mechanical friction losses and reduce energy consumption at the source.

✅ Intelligent DC EC variable frequency control automatically adjusts rotating speed based on air volume demands of different hospital zones and time periods.

✅ Significantly lower equipment operating temperature rise and reduce extra energy consumption for machine room heat dissipation.

✅ A robust structure with minimal wear extends the service life and drastically cuts labor and spare parts costs for later maintenance.

 III. Convincing Energy-Saving Data with Tangible Cost Reduction Effects

- Annual power consumption of air handling units before renovation: 983,000 kWh

- Comprehensive system energy saving rate: 40%

- Annual electricity saved: 393,000 kWh

Each set of AHU system saves nearly 400,000 kWh of electricity per year, directly cutting the hospital’s power expenditure. Meanwhile, carbon emissions are reduced, complying with the requirements of green, low-carbon and energy-efficient development for public hospitals. The project delivers both economic benefits and environmental value.

EBST EC energy-saving fan solutions are the top choice for low-carbon renovation of medical buildings. Backed by numerous proven completed projects and authentic quantifiable energy-saving data, we help medical institutions cut costs and boost efficiency to build green smart hospitals.If you have ventilation or HVAC energy retrofit demands, you may book an on-site survey for a tailor-made energy-saving solution.