CO2 Heatpump for electric double decker buses 2026

Electromobility in public transport is developing rapidly—and with it the demands on modern thermal management systems. Double-decker buses are a particular challenge in this regard: large interior volumes, two levels, and wide entry areas make an evenly distributed air conditioning difficult.

Konvekta recognized this challenge very early and created a sustainable solution with the first CO₂ heat pump for electric double-decker buses.

Now comes the optimized follow-up system, which will be available in 2026.

Lighter, more powerful, more efficient
The new generation sets new standards:

• Approx. 100 kg weight reduction thanks to a newly developed compressor
• +25% heating capacity for greater efficiency in winter operation
• +10% cooling capacity for optimal air conditioning in summer

This makes the system even more powerful – while reducing weight and maintaining the usual high level of comfort for drivers and passengers.

Sustainable and future-proof

Like all Konvekta systems, the new double-deck heat pump also uses the natural refrigerant CO₂ (R744). It is PFAS-free, non-flammable, non-toxic, and has a GWP of 1—in contrast to conventional chemical refrigerants, which are many times more harmful to the climate.

In addition, the CO₂ heat pump saves up to 50% energy compared to purely electric heating systems, thus reducing operating costs and significantly increasing the range of the buses.

With this further development, we are taking the next steps to use electric double-decker buses in an even more sustainable, efficient, and economical way.