A modern sports hall in Kazanlak in Bulgaria "breathes" sustainably and efficiently thanks to a Hoval decentralized system

2025-12-113 min.

During the spring of 2025, the new modern building part of the gymnasium at the Nikola Obreshkov Specialized High School of Natural Sciences and Mathematics in the city of Kazanlak, Bulgaria, was officially opened. The new gymnasium is designed with all requirements regarding energy efficiency and offers a spacious, illuminated and comfortable zone, in which students can undergo their physical training and skills. The gymnasium is equipped with a highly efficient ventilation and air conditioning system, Hoval TopVent MP 6P, which guarantees an optimal microclimate in every season. Through it, PPMG "Nikola Obreshkov" not only expands its infrastructure, but also creates a high-tech sports environment that stimulates an active and healthy lifestyle," Hoval told BalkanEngineer.com.

The roof apparatus Hoval TopVent MP 6P is the most state-of-the-art climate solution, entirely responsible for the comfort and pleasant atmosphere within the new gymnasium. The system works in tandem with a rooftop VRF unit with direct evaporation and a high efficiency factor, ensuring optimal year-round temperatures. It supplies fresh air to the room, heats it in winter, cools it in summer, and provides effective ventilation - a key factor in maintaining a high-quality microclimate during intensive use of the facility.

“The installation is based on the air/air heat pump system integrated into the TopVent® MP. It enables decentralized, autonomous and environmentally friendly generation of heat and cold by using the energy of the ambient air. The device is installed discreetly under the ceiling and connected to an external air duct that runs vertically through the roof. Through intelligent control of the flaps, the device sucks in external and/or room air, treats it according to the set mode and supplies it into the room via the highly efficient Air-Injector®,” explained Hoval.