[patd]

The ground heat pumps are not used in the opposite direction, it doesn't cool down water to the floor but it flows water at 10-15C into your floor. According to the installers I've talked to here in Belgium, all the ground heat pumps devices are capable of doing that.

While this might not be needed in Sweden, it's more interesting further south. I live in Belgium and we had a long heatwave this summer and they predict more of those in the coming years. So cheap efficient cooling might turn out useful here (even if nobody had AC systems 20 years ago)