Fresh Air and ERV Systems

Fresh air and ERV equipment

Plan fresh air systems for offices, classrooms, gyms, cafes, and multi-room projects by matching outdoor-air CFM, climate, humidity goal, duct layout, filtration, controls, and service access to the right equipment family.

Fresh Air and ERV Systems: Fresh air ventilation systems and fresh air exchanger options for offices, gyms, cafes, classrooms, and multi-room projects where outdoor-air CFM, climate, humidity goal, duct layout, filtration, controls, service access, and current model documents need to stay together.Updated 2026-07-06

airflow target: CFM
room exchange: ACH
duct resistance: ESP
Air Filter Box / filter path: FLT

MiWind heat recovery ventilation equipment view

MiWind ultra-thin fresh air unit equipment view

Fresh Air and ERV Series

Compare fresh air units, ERV products, and HRV options by CFM range, recovery type, duct path, filter access, and service space.

Heat Recovery Ventilation Series

Fresh air series

Heat recovery ventilation series for ERV/HRV fresh-air sizing where outdoor-air CFM, room use, climate, humidity goal, duct route, filter access, service side, controls, and current model documents drive the next equipment check.

Airflow: air volume range 150-15000 m3/h by model; confirm selected model and convert units before submittal use
Dimensions: 4/6/8 inch duct-size range; confirm exact dimensions
Mounting: Ducted HRV / fresh-air unit; verify orientation and service side
Voltage: Confirm the US voltage option
Controls: Controls, service side, filter access, and outdoor-air CFM should be listed together; confirm controls by model.

Typical applications

Space use: Offices
Air path: Classrooms
Service focus: Hotels

View series

Air Filter Box Series

Fresh air series

Air filter box series for fresh air systems, fresh air intake filter box HVAC requests, and inline air duct filter planning where filter type, duct size, pressure impact, access side, and service routine need to be reviewed.

Airflow: air volume range 120-2600 m3/h by model; confirm exact model before submittal use
Dimensions: 4/6/8/10 inch duct-size range; confirm exact dimensions
Mounting: Duct-mounted filter box; confirm access direction and exact dimensions
Voltage: Confirm the US voltage option

Typical applications

Space use: Fresh air filtration
Air path: PM2.5 reduction review
Service focus: Ducted filter planning

View series

Selection information

CFM, ACH, climate, filter access, and duct route establish the product-sizing basis; ERV vs HRV remains the comparison guide.

Projects need planned outdoor air without guessing at CFM, ERV/HRV direction, climate fit, filter pressure, duct route, controls, or installation space.

Project measurements

Define room type, area, ceiling height, expected occupancy, outdoor-air target, and operating schedule.
Estimate planning CFM or ACH before discussing product fit.
Use the ERV vs HRV guide for recovery-type comparison, then keep product sizing on the equipment path.

Product documents

Product documents: 2 available
Series pages: 2 series
Model documents: Request
Certification and availability: Confirm by model

Selection checks

Airflow demand: CFM first.
Recovery path: Match recovery type to climate and humidity goals.
Duct and filter reality: Collect filter-box and duct data early.
Space type: Tie CFM to actual use.

Decision matrix

CFM: How much outdoor air the project is planning around. / Ventilation CFM calculator.
ACH: How quickly the room air volume is exchanged. / CFM to ACH comparison.
Fresh air exchanger: Whether the project needs a ducted fresh air exchanger, ERV fresh air intake, Air Filter Box, or fan-supported path. / Collect CFM, climate, duct, filter-box, and service notes.
ERV vs HRV: Whether humidity transfer should be part of the selection. / ERV/HRV guide.
External static pressure: Whether equipment can move air through ducts, filters, and grilles. / Collect duct route and filter data.
Filter access: Whether maintenance will be realistic after installation. / Confirm filter type and service clearance.

Is an ERV always better than an HRV?

No. Climate, humidity goals, building use, and equipment documents all matter. The ERV vs HRV guide helps frame the first discussion.

Can the calculator replace mechanical design?

No. It gives planning-level airflow ranges for an inquiry, not final engineering approval.

What should be checked before choosing ERV or HRV?

Review climate, indoor humidity goal, occupancy, filter access, duct route, and service clearance before narrowing the equipment family.

Air Curtain Series

Ventilation Fan Types

Fresh Air Systems

Exhaust Fan Options

Dehumidifier Options