How very rude of you! I can't see what's to be gained by making a pointless little jab like that.
I can't imagine where you live where there was any air cool enough to activate a heating system this summer. Our doors and windows were open permanently for about 3 months and I live in the far north of England where many people seem to think it's permanently winter. Our heating never came on once, as it never does in the summer, even an ordinary one. You must have some weird little micro climate in your area. Either that or there's something wrong with your heating system.