I find it odd that for heat he only mentions units external from the a/c. The 'cu-229cf' unit he bought seems to be capable of heatpump mode[0]. Nonetheless, I

I find it odd that for heat he only mentions units external from the a/c. The 'cu-229cf' unit he bought seems to be capable of heatpump mode[0]. Nonetheless, I really hate mini-splits. They always have really thin intake air filters that really don't filter anything. Thus the insides of the indoor unit are always caked in layers of dust and mold. [0]: https://panasonic.jp/aircon/housing/products/19f.html https://panasonic.jp/aircon/housing/products/19f.html