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Fresh Air · Dehumidification · Rotary Core

Fresh Air Dehumidifier
with Rotary Heat Recovery

The InAir Fresh Air Dehumidifier with Rotary Heat Recovery brings fresh outdoor air indoors while reducing humidity and recovering energy from exhaust air. It filters outdoor air through G4 and H10 filters, exchanges sensible and latent heat through a total heat recovery wheel, dehumidifies through an evaporator and reheats air through a condenser before supply.

Model: INAV-HTRW30 · Airflow: 300 CMH
InAir Fresh Air Dehumidifier with Rotary Heat Recovery
✓Fresh air dehumidification
✓Total heat recovery wheel
✓Sensible heat efficiency above 70%
✓G4 primary filter and H10 high-efficiency filter
✓EC fan with six adjustable speeds
✓Compressor-based dehumidification
✓Evaporator and condenser arrangement
✓Internal rubber board insulation
✓Wall-mounted installation only
✓Optional pressure difference gauge or filter replacement alarm
Not sure which filtration grade suits your city?

Filter grade depends on local AQI and application. Ask our engineer — tell us your city and building type.

Best Applications

Typical applications

Premium homesVillasWellness spacesHigh-humidity apartmentsCoastal citiesMonsoon-sensitive areasClinicsSmall commercial rooms
How to Select — Step by Step
Confirm humidity and fresh air need
Use this unit where both fresh air and dehumidification are required.
Check installation wall
Confirm wall mounting, duct access and service clearance.
Plan air routes
Coordinate outdoor air, exhaust air, return air and supply air paths.
Plan drainage
Provide condensate drain route.
Select alarm options
Consider pressure differential or filter replacement alarms.
Frequently Asked Questions
The heat recovery wheel transfers sensible and latent energy between exhaust and fresh air streams, improving energy efficiency.
Yes. Outdoor air is filtered through G4 and H10 filters.
The brochure specifies wall-mounted installation only.
Ready to specify? Start with a free site survey.

How is Fresh Air Dehumidifier with Rotary Heat Recovery sized?

Sizing starts from the air the space actually needs, not from the size of the room. For occupied spaces that means airflow per person under ASHRAE 62.1 — CO2 is produced by people, so a crowded small room needs more air than an empty large one. For process and extract duties it means the required air changes per hour for the activity. Once the airflow is fixed, the duct route sets the static pressure the unit has to overcome, and those two numbers together select the model.

Three things change the answer in India specifically: outdoor temperature at the design peak, which decides how much heat recovery is worth paying for; outdoor humidity, which decides whether passive recovery is enough or active dehumidification is needed; and local AQI, which sets the filter grade — MERV-13 for ordinary urban particulate, HEPA-13 where AQI regularly passes 200. The city pages give the design figures for fifteen Indian cities.

Where does it install?

Installation is cheapest and least disruptive during construction or renovation, when ducting is concealed inside the ceiling void and no finished surface is disturbed. In a completed interior the same result is reached with surface-run ducting in a boxed soffit, or with a standalone unit that needs only a core-cut through an external wall. A typical residential installation is commissioned in ten to twelve days from order.

Every installation includes a site survey, duct design, commissioning with measured airflow readings, and handover. Send a floor plan to sales@in-air.in and we will size it and quote it.

What does it cost to run?

Two figures matter. The fan draws continuous power, which is small — residential units run in the tens of watts. The larger figure is what the unit saves: recovering heat from the air being exhausted means the incoming air arrives closer to room temperature, so the air conditioner does less work. In a Hyderabad summer, incoming air at 44°C reaching the room at 26–28°C is the difference between an AC that copes and one that runs continuously. Filters are the recurring cost, changed on a schedule that depends on local AQI.

Further reading

Product questions

What do specifiers ask about this range?

The InAir Fresh Air Dehumidifier with Rotary Heat Recovery brings fresh outdoor air indoors while reducing humidity and recovering energy from exhaust. In practice that means premium homes, villas, wellness spaces, high-humidity apartments. Selection starts from the duty the space needs rather than from the size of the room: airflow first, then the static pressure the duct route imposes, then filtration and controls. Get those three right and the equipment follows.
Three things. First, fresh air dehumidification. Second, total heat recovery wheel. Third, sensible heat efficiency above 70%. What matters is not the datasheet but that the specification is chosen for Indian operating conditions — sustained heat, monsoon humidity and a particulate load that shortens the life of equipment designed for a temperate climate.
Five steps, in order. Define the duty — for fresh air dehumidifier with rotary heat recovery that usually means premium homes, villas, wellness spaces, high-humidity apartments. Calculate the airflow from occupancy under ASHRAE 62.1 rather than from floor area. Check the static pressure the duct route imposes, which is what separates two units of the same rated airflow. Add the filter grade your city calls for. Then validate against the published performance curve.
Yes, and the survey costs nothing. Send a floor plan with occupancy and intended use to sales@in-air.in and an engineer returns the airflow the space needs, which fresh air dehumidifier with rotary heat recovery model delivers it, the filter grade your city calls for, and an installed cost. Typical duty for this range is premium homes, villas, wellness spaces, high-humidity apartments. If the building already ventilates adequately, we say so rather than quoting.