Energy-Efficient Indoor Climate

We reduce energy consumption in your ventilation systems — and improve indoor climate. In offices, restaurants, shops, hotels and institutions.

Comfort ventilation with low energy consumption

IM Service optimizes indoor climate in all types of buildings with comfort ventilation: offices, restaurants, shops, hotels, schools, care homes and other institutions. We design new systems and upgrade older installations to deliver fresh air and stable temperatures at the lowest possible energy cost. Each building type has its own demands. A restaurant has high heat loads from the kitchen and varying occupancy throughout the day. An office needs stable air quality during working hours and minimal operation at night. A shop must handle customers entering and leaving without drafts and temperature swings. We tailor the solution to your actual needs — not a standard template.

Indoor climate installation in an office building

Older systems waste energy

Buildings from the 1990s and 2000s — offices, restaurants, shops, institutions — typically have ventilation systems with constant-pressure motors that run at full capacity regardless of load. Fans blow at the same speed at 3 AM as at 10 AM. Heat recovery is missing or underperforming. Dampers and control valves are misadjusted after years of operation without maintenance. The result is energy consumption that often runs 40-60% above what a properly optimized system requires. That translates to thousands of euros per year in unnecessary operating costs — and a carbon footprint far larger than it needs to be.

How we work

We start with a review of your existing system. We measure air volumes, record run schedules, identify motor types and assess heat recovery. From there, we develop a concrete plan with expected savings and payback period. For major energy renovations, we follow the commissioning process in DS 3090:2014, which ensures that all systems are verified and documented from design through operation. Typical improvements include replacing older motors with EC motors that offer stepless speed control, installing demand-controlled ventilation based on CO₂ and temperature sensors, configuring time schedules matched to the building's actual usage patterns, and retrofitting or optimizing heat recovery. Most improvements can be carried out without major construction and without disrupting daily operations. We coordinate the work to fit your schedule.

Concrete results

Energy optimization of older ventilation systems typically pays back within 2-4 years. After that, the savings are pure gain — year after year. Beyond lower energy consumption, most buildings also experience better indoor climate after optimization, because air volumes are matched to actual demand instead of running at a fixed, often incorrect setting.

What we offer

Ventilation Design

Design of ventilation systems tailored to your building's size, occupancy and air exchange requirements — with energy efficiency built in from the start.

Air Quality Measurement

Precise measurements of CO₂, humidity and particle content that form the basis for targeted indoor climate improvements.

Temperature Balancing

Balancing of heating and cooling systems to ensure consistent and comfortable temperatures across all zones.

Energy Optimization of Older Systems

Review and upgrade of existing ventilation systems: motor replacements, heat recovery, demand-controlled operation and reduced run times. We find the savings in your current installation.

Noise Reduction

Identification and mitigation of noise sources from ventilation systems — particularly important in restaurants, offices and other spaces where noise affects the experience.

Maintenance Planning

Preventive maintenance plans that ensure long service life and stable operation of your ventilation systems.