SlimAIR Heat Recovery Unit is a low-profile HRV unit with 89,9% heat recovery, dedicated to 140-150 m2 residential buildings with high requirements for air quality and energy-efficient solutions. By removing stale air simultaneously with filtering fresh air, the unit assures balanced ventilation at home.
With only 24.2 cm height and compact design, SlimAIR is a great space-saving solution for limited, restricted spaces. SlimAIR unit is a flat heat recovery unit designed as a one-fits-all solution, i.e. it can be installed both under the ceiling or on the wall.
The unit is extremely versatile when it comes to the installation possibilities since You can install SlimAIR in 3 positions without any additional mounting brackets (everything You would need, is included in the set):
Wall-mounted horizontally
Wall-mounted vertically
Ceiling-mounted, vertically
For maintenance purposes, air filters can be easily removed without dismantling the front cover, which could be quite bothersome when the unit is suspended under the ceiling.
What’s more, there’s easy access to filters both from the front and from the side of the unit. This makes sure the process of changing filters is quick and simple.
SlimAIR unit is compact and easy to handle, it weighs only 25.5kg so that one installer is enough to install it, single-handedly. For ceiling mounting, there’s an additional mounting rack available for one-person installations.
For maintenance and service purposes, all the most important parts of the unit, like the heat exchanger and fans can be accessed through the front cover. Without dismantling the HRV unit. An installer can easily commission the HRV and check parameter settings of the unit, by simply connecting to the USB port located on the SlimAIR unit.
The heat recovery ventilation system is designed to operate continuously with low power consumption. SlimAIR unit consumes only 14.8 W at its lowest speed! Compliant with EU standards and constructed with high-quality materials, ensuring energy class A/A+, very low leakage (class A1), high thermal insulation, and minimal noise.
MVHR systems need to work non-stop, hence SlimAIR's low noise level of 50dB(A) is perfect for avoiding disturbing residents. In an effort to reduce noise, we used the following measures:
1. Supply fan located upstream of the heat exchanger; 2. Profiled airflow channels; 3. Special grids for fans; 4. EPP casing with acoustic insulation
The heat recovery unit can be equipped with the Constant Flow (CF) module that guarantees that the airflow rates preset by the installer are achieved independent of any resistance in the duct system. 
After HRV installation, the ventilation system naturally gets more and more unbalanced. Dirty air filters, condensate on the heat exchanger can influence the efficiency of the unit. Adding a CF module to the MVHR system will ensure 100% capacity year-round. Only a balanced ventilation system takes full advantage of the heat recovery unit’s effectiveness.
The advanced algorithm that controls fans’ operation together with build-in 1kW pre-heater protects the heat exchanger, a heart of the unit, from freezing and risk of damage.
The energy efficiency of this two-step frost protection system lies in the fact that merely when temperatures drop below a certain threshold, the preheater can be activated (bringing in additional power consumption).
89,9% heat recovery efficiency is achieved thanks to a high-quality counter-flow heat exchanger made of PET. For cold and dry areas, we’ve added the option to change the standard heat exchanger to an enthalpy heat exchanger.
In addition to transferring heat, the enthalpy heat exchanger also transfers moisture between streams. In cold weather (when the outside air is dry), an enthalpy exchanger can help maintain a comfortable interior humidity rate (40-60%).
As a result, during the summer it will lower the relative humidity in the supplied air. Lower risk of heat exchanger freezing is another benefit of energy recovery units.
Unit housing is made of EPP - expanded polypropylene, high-quality material with excellent acoustic and thermal insulation properties. The device has 4steel mounting brackets and 4 clamps to open the front cover.
Standard equipment includes two pleated filters with increased filtration area, which results in low pressure drops. The air filters are classified according to ISO 16890 as ISO coarse 70%.
Thanks to the unit’s unique condensate drain system, it can be mounted in three different positions without using additional mounting brackets: vertically on the wall, horizontally on the wall, and ceiling-mounted, vertically.
Technical data - Overview
Technical data for SlimAIR heat recovery unit
If You're looking for more tips and instructions about the MVHR (mechanical ventilation with heat recovery), check also the following articles: