ERV/HRV planning worksheet
Heat Recovery Ventilator Sizing Worksheet
ERV/HRV worksheet keeps project details together: climate, indoor humidity goal, outdoor-air CFM, occupancy, duct route, filtration, service access, controls, and model-document needs.
Heat Recovery Ventilator Sizing Worksheet: Compare ERV and HRV paths from climate, humidity goal, outdoor-air CFM, occupancy pattern, duct route, filter needs, and service access. Confirm current model documents before using the worksheet for product selection.
Updated 2026-07-06Before you calculate
ERV/HRV Inputs
Heat recovery ventilator sizing should start with climate, indoor humidity goal, building operation, and outdoor-air CFM, then move to duct route, filter access, service clearance, and current model documents.
- Capture climate, humidity goal, room type, occupancy, and outdoor-air CFM target.
- Identify whether humidity transfer, sensible heat recovery, filtration, or service access is the main concern.
- Keep duct path, drain or condensate expectations, filter access, and maintenance space visible.
Result use
Recommended next step
The output helps decide what to ask next for fresh air ventilation systems. Code compliance, recovery, and certification remain project-specific.
Carry Forward
Climate and humidity
Humid, cold, dry, and mixed climates can change whether latent transfer is useful.
Keep the climate note attached.ERV/HRV planning result should enter fresh-air system selection with outdoor-air CFM, climate, duct route, filter access, service clearance, and current model documents together.