AirHC1000

Advanced Duct Coolers/Heaters with Circular Connections

GHT duct coolers and heaters with circular connections (D200/D250) are designed to deliver reliable and energy-efficient climate control for a wide range of ventilation systems. These units are suitable for both residential and commercial applications, as well as controlled environment agriculture (CEA) projects such as greenhouses and indoor farms.

Our duct coolers/heaters can operate with water or glycol as the heat transfer medium and are fully compatible with both heat recovery (HRV/ERV) and standalone ventilation systems. The robust construction, high efficiency, and flexible installation make them the ideal solution for maintaining optimal indoor air temperature in any project.

Possible Applications of AirHC1000

AirHC1000 is developed for versatile use in various air handling and ventilation solutions, thanks to its high efficiency, broad temperature range, and robust construction. 

Flexible Integration – With or Without Heat Recovery Units

The AirHC1000 post-heater/cooler is designed for maximum flexibility and can be efficiently integrated both downstream of a heat recovery (HRV/ERV) unit or used independently on supply air duct alongside fan.

With Heat Recovery Unit:
When installed after a ventilation heat recovery unit, AirHC1000 serves as a “post-heater” or cooler. It ensures the supply air temperature reaches the desired comfort level, regardless of the efficiency of the heat exchanger in the HRV. This is especially important during extreme outdoor temperatures, or when additional cooling is needed in summer.
Without Heat Recovery Unit:
The unit can also be used in ventilation systems without heat recovery. In this case, AirHC1000 provides all supply air heating or cooling, ensuring comfortable indoor climate all year round.

Operation in Cold Climates – Why Use Glycol?
Important: In regions where winter temperatures regularly fall below 0°C (32°F) and no heat recovery unit installed, it is essential to use a glycol solution (antifreeze) as the heat transfer medium in the AirHC1000 unit. Glycol protects the internal heat exchanger from freezing and subsequent damage, ensuring:
Safe, reliable operation even in prolonged frost or during ventilation shutdowns.
Extended equipment lifetime and reduced maintenance risks.

In moderate or warm climates, plain water can also be used as the heat carrier. However, for maximum safety, especially in areas subject to sudden temperature changes or for seasonal homes with prolonged absence, glycol is always recommended for freeze protection.


Parameter

Value/Description

Maximum Airflow

1000 m³/h (588 CFM)

Duct Connection

DN250 (Ø250 mm / 9.84 in, circular)

Heating Capacity

up to 20 kW

Cooling Capacity

up to 6.6 kW

Heat Transfer Medium

Water or glycol solution (antifreeze)

Operating Temp. Range

-30°C to +60°C (-22°F to +140°F)

Insulation

High-efficiency EPP

Air Filter Integration

Optional

Casing Material

Moisture-resistant, durable EPP

Heat Exchanger

Biologically safe for water/glycol

Condensation Connection

5/4" (Ø63 mm), below the unit

Weight

8 kg (17.63 lbs)

Dimensions (H x W x D)

530 x 390 x 590 mm

Application Examples

Residential, commercial, CEA, data centers, labs, museums, etc.


Technical information