Here is another tip that may help. Below is a HWH drain hose I have been using for a few years. Has worked out ok and gets the drain water off to the side of the door to the ground. It is made up of all off the shelf items. IIRC, at the end is a 1/2" ball valve with nipple, std. hose and 1/2" x 1 1/2" nipple into HWH. It stays folded in compartment when not used.