Air conditioners offer the functions of ventilation, air filtration and humidity control. They can also perform the functions of air cooling and heating. However, basic air conditioners do not include the heating function. To benefit from this function, reversible air conditioners, also called heat pumps or heat pumps, must be used.
A heat pump works the same way as an air conditioner. Again, this is a heat transfer process, not heat generation.
Thus the free energy (Btu / h) present in the outdoor air is transmitted by the heat pump to your indoor space. You opt for a complete solution, you heat and cool at low cost.