Plate and Heat-Pipe Units

These are nearly maintenance free. Inspect annually, vacuum or wash the core if it collects dust, and check for leakage between airstreams if performance drops.

Rotary Wheels

The wheel adds a motor, seals, and bearings. Plan for periodic media cleaning, seal inspection, and drive-belt or bearing checks per the manufacturer schedule.

Filters Matter

Good upstream filtration keeps the core clean and extends intervals. Dirty filters also raise pressure drop and fan energy, so replace them on schedule.

What to Track

• Pressure drop trend (rising drop signals fouling)
• Supply-air temperature (falling effectiveness signals blockage or leakage)
• Motor current on rotary units