Idea for a piece of #legislation. All #Airconditioners including #window units should be required to also have reversing valves so that they can also produce heat. I don't want to jinx it but in the over 10 years and 3 #houses me and my #wife have lived in our #minisplits are by far the best heat source we've used. And they are basically just #acunits that can run backwards. So why isn't it required for all ACs to be able to do so?