Heat Recovery Ventilation Systems is an innovative & autonomous system that filters and “freshens” the incoming air of the room and at the same time recovers the waste heat energy by heating or cooling it, depending on the prevailing thermal conditions within the space.

This process ensures and guarantees the purity and the proper quality of the indoor air while achieves Thermal Comfort and Healthy Atmosphere by disposing pollutants and microbes from the space, without losing the Heat (energy) in the environment, which happens when we open the windows for the same reason.

thermiki anesi andrianos aerismos me anaktisi thermotitas

Download the PDF Brochure: Ventilation System With Heat Recovery ASSOLO

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Continuous Supply of Fresh - Healthy Air with Closed Windows
Reduce Heat Loss to 93%

Our houses, insulated or not, require an aeration / ventilation system. Ventilation provides fresh, clean air, free from pollen, dust, viruses, microbes and removes humidity from the house. Mechanical ventilation with heat recovery offers to a well-insulated home, the ideal comfort conditions with minimal expense since it achieves maximum energy efficiency through heat recovery.

Heating Recovery Ventilation system is ideal for everyone and especially necessary for people who have problems with allergies & respiratory as well as those who are susceptible to infections.

By installing Assolo Heat Recovery System of ANDRIANOS achieving:

  • Fresh & Clean air, free from pollen, dust, viruses, microbes day and night!
  • Quick disposal of mold, unpleasant smells & humidity.
  • Up to 93% Heat Recovery
  • Up to 50% reduction in the cost of heating / cooling of your space.
  • Increased sound insulation.
  • Easy and affordable installation | Plug & Play.
  • Value for money.

The mechanical ventilation unit manages to expel the air from rooms with increased humidity, such as the kitchen, after having "taken" the heat. When it is necessary, the ventilation system preheats or pre-cooling the incoming air.

The result:

Healthy Atmosphere & Disposal of pollutants and microbes from the room, by supplying fresh-clean air with closed windows.

 An optimal air ratio and a pleasant indoor environment with the necessary Internal Air Quality (IAQ - InternalAirQuality).

 Significant Energy Saving and Reduction of Heat Losses thanks to Heat Recovery

Αερισμός με Ανάκτηση

Advantages of Ventilation with Heat Recovery

  • Very Healthy and Clean Atmosphere, so ideal conditions and satisfied residents or customers or staff.
  • Immediate and effective removal of viruses,microbes, mold, pollen, unpleasant smells & humidity.
  • High Heat Recovery [93%], that is, a significant reduction in heat loss and energy savings since ventilation losses are almost zero.
  • Low Power Consumption, just 5W, so almost zero power consumption.
  • Totally silent operation 13dB, to an extent that passes unnoticed.
  • Additional savings in heating costs by at least 30% and at the same time a significant contribution to environmental protection.


You will continue to lose valuable energy when ventilating your space


will you choose Clean Atmosphere & Absolute Thermal Comfort with ASSOLO?


Heat Recovery Ventilation

For questions and best Heat Recovery Ventilation solutions, please call at +3027210 23124 or fill out the form. The experienced engineers of ANDRIANOS will contact you as soon as possible.

The principle of operation of the Heat Recovery of Ventilation with Heat Recovery

Ventilation System ASSOLO of ANDRIANOS operates in 2 cycles, where each cycle lasts 70 seconds. In the first cycle, it removes air from the interior, to the outside environment, in the second cycle it introduces air from the environment inside the building. The operation of heat recovery per cycle described below:

Χαρακτηριστικά εναλλάκτη αέρα-αέρα με ανάκτηση Assolo

Ventilation System Operating Circle (70sec + 70sec)

1st Cycle
Ventilation unit removes air from the rooms for 70sec, after first absorbing its heat to the ceramic exchanger, which stores the precious heat of the space.

2nd Cycle
Once the 70 sec is completed, then the fan changes direction by transferring fresh, outside air into the room, which passes through the ceramicexchanger, where it absorbs - recovers the stored heat from the 1st cycle.
When after 70 sec the stored heat is exhausted (fully recovered) the fan changes direction again and a new 1st cycle begins, etc.

ventilation with heat recovery

Indicative Ventilation Mode with recovery during winter. (heating period)

Technical Ventilation Features with Assolo Recovery

↦ High Heat Recovery [93%]
↦ Reduced power consumption [5W]
↦ Energy Class A
↦ Totally silent operation
[13 dB on the small scale– 3m]
[23 dB on the large scale– 3m]
↦ Easy installation – Plug n play
↦ Easy maintenance and cleaning


TECNOGAS ASSOLO 91  Energy label small

Modern Ventilation Systems with Heat Recovery - Assolo

New technologies dedicated to energy saving and well-being give a different way of interpreting "air" to new controlled ventilation systems (CMV).
By filtering the incoming air and recovering the maximum thermal energy of the discharged air, the Assolo Air Recovery System is the best solution for ventilating and ventilating your space.

assolo aerismos anakthsh 2

A must have of the season in sustainable consumption and in reducing operating costs.

The new thermal and technical design, complying with the European Directive 91/2002, has shown the way for the use of energy-efficient systems which offer a specific contribution to our well-being and support for the day-to-day management of our services.

Product design



Air-to-air heat recovery exchanger Assolo 91-1.0, suitable for a single-room, with silent operation


assolo aerismos anakthsh


- Ceramic exchanger with heat recovery up to 90%.
- Compact, flexible and easy to use.
- Made of durable materials of high quality and aesthetics.
- Double separate inlet and outlet air filters, washable and easily removable.
- It does not require drainage of condensates.
- Adjustable suction speed up to 60 m3/h.
- Air Abduction and supply alternately.
- Electronic switching motor.
- Reduced power consumption (5W).
- These silent devices can be installed on the perimeter walls of the house and have a variable length of 250 to 400mm.
- The air duct can be extended from a tube of the same diameter up to 3m. For this air duct when a bypass is necessary, the maximum length of the duct will be 2.5m (including a 90° angle).
- Simple ventilation system requiring no channels.
- Washable and easy to remove filters and heat exchanger.
- Suitable for replacing an existing fan with minimal interference.- Fan Speed Adjustment Button that allows the device's operating speed to be set from a minimum to a maximum level.
- The 2 buttons of the electrical contacts (on off and speed control) can also be mounted on the wall.

 Air-to-air heat recovery exchanger Assolo 91-2.0

assolo aerismos anakthsh 2


It has the same features as Assolo 91-1.0, as well as the following:
- Night mode (silent low speed operation)
- On/off switch on the controls
- Equipped with a visual indication of the functions and a warning indication for cleaning the filter
- Capability of expansion up to 16 units
- Optional: CO2 detector built into the wall-mounted controller

Air-to-air heat recovery exchanger Assolo 91-3.0 Wireless (868MHz)

It has the same features as the Assolo 91-2.0 with the basic difference that the wiring is not necessary, as it operates 868MHz wirelessly and the fan speed has 5 predefined levels instead of 3.

Contact ANDRIANOS for more information about Ventilation Systems with Heat Recovery

The best solution for ventilating your space

An integrated ventilation system manages the seamless airflow in the room to reduce energy needs and upgrading the quality of living conditions by ensuring air quality and comfort conditions without creating unwanted streams. The stronger the air-tightness of the building, the lower the energy losses and the natural ventilation of the building, making it imperative to use mechanical ventilation systems and heat exchangers. Optimum indoor climate (IAQ) without air drafts. By installing Assolo Heat Recovery System achieving:

  • Optimal indoor climate (IAQ) without air drafts.
  • Removes suspended particles with high quality air filters.
  • Quick disposal of unpleasant smells from the kitchen, toilet.
  • Structure protection, combat mold.
  • Simultaneous reduction of operating costs of air conditioning (Heating - Cooling).
  • Silent mode.
ANDRIANOS engineers, with many years of experience in ventilation systems, have chosen the Assolo Heat Recovery Ventilation System for a wide range of applications, from the smallest room to the most demanding business building.


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