adding heat strips to Mitsubishi heat pump

We have a ducted Mitsubishi heat pump (not hyperheat) that was installed a few years ago. There’s no backup heat source and we had the impression that it would be… We have a ducted Mitsubishi heat pump (not hyperheat) that was installed a few years ago. There’s no backup heat source and we had the impression that it would be…Read MoreGreenBuildingAdvisor