How Heat Pumps Work in Transport
Heat pumps transfer heat from one place to another using electricity. The air-conditioner in a car is actually a type of heat pump. However, as the transport sector electrifies to reduce emissions, there are new applications for heat pumps.
In transport, heat pumps can:
- Heat vehicle cabins more efficiently than traditional systems. This is of special importance for electric vehicles, where there is not as much waste heat available as in cars with combustion engines.
- Recover waste heat from engines or batteries in electric vehicles (EVs).
- Support thermal management in public transport systems, such as trains and buses.
- Integrate with district heating and cooling networks that serve transport hubs like stations and airports.
Why It Matters
- Energy Efficiency: Heat pumps use less energy than conventional heating systems, helping reduce fuel consumption and extend EV range.
- Climate Impact: By replacing fossil-fuel-based heating, they lower greenhouse gas emissions.
- Comfort and Safety: They provide stable and responsive climate control, improving passenger comfort and battery performance in EVs.
- System Integration: Heat pumps can be part of broader energy systems, linking transport with electricity, heating, and cooling networks—known as sector coupling
Future Potential
According to the IEA, heat pumps could play a major role in multi-vector energy systems, where electricity, heating, cooling, and transport are interconnected. In such systems, heat pumps help balance energy demand, store thermal energy, and reduce grid strain—especially when paired with renewable energy sources.
As cities and countries invest in sustainable transport, heat pumps offer a practical and scalable solution to make mobility cleaner, more efficient, and more resilient.