Underfloor heating(hydronic) beneath fridge freezer

[Ormston]

We are about to lay the underfloor heating in our extension and i've started to think about which areas to avoid?

Should i be laying pipes under the fridge freezer?
I'm not expecting the water to be above 30C unless we get a stupidly cold winter so surface temp will be a few degrees below that.

During summer the floor will be used for cooling, or at least heat will be dumped to reduce overheating in the house. This summer we cooled the the existing floors to 20-21C. Without cooling temperatures get out of control fairly quickly.

I'm mostly thinking about the efficiency of the fridge freezer, which despite supposedly being A rated uses more than double it's claimed usage.

How about under a wood burner, is the floor likely to gain any heat which would be spread around the rest our the house?

Thanks Steve