Ventilation in hotels and guesthouses is not a comfort detail. It is a mandatory technical requirement and directly linked to the star/flower classification of the tourist accommodation structure. This article explains exactly what is mandatory in each zone of a hotel or guesthouse, which products are suitable, and what a complete system costs.

The attic is the most difficult space to ventilate in any home. Unlike any other room, an attic has three completely different problems that must be solved simultaneously — and solving one can worsen the others if you don't understand the mechanism behind each.

This guide explains what temperatures and humidity must be maintained, how to calculate required airflow, why redundancy is not optional, and which equipment from the Nicotra Gebhardt and Vent-Axia ranges available at ventilation.ro solves the problem correctly.

This guide explains what airflow is required in summer and winter, what gas concentrations must be maintained, how to calculate the number of fans and which equipment is suitable for Romanian poultry houses.

This guide explains what airflow is required, what the regulations say, which equipment solves the problem completely and how to quickly calculate what you need for your kitchen and dining room.

Complete industrial fan selection table: production hall, warehouse, paint shop, professional kitchen, smoke extraction, high temperatures. Find the right model in 2 minutes. 

Does your production hall reach 45°C in summer? Learn why it happens and what industrial ventilation solutions exist — wall axial fans, roof turrets, real costs and calculated ROI.

What ATEX ventilation is mandatory in a paint shop or auto workshop? Explosion risk, classified zones, regulations and Casals products available in Romania with real prices. Complete 2026 guide.

Confused between an F400 fan and one rated for continuous 250°C operation? They are completely different products. Full technical guide with Casals products available in Romania — with prices and real-world applications.

Air curtain guide 2026: when mandatory, how to choose between electric and hot water types, how to calculate width and air speed. Real prices.