Another option may be to hook up a short section of hose to a one or both machines with a quick connector on the end at an accessible spot that does not require you to crawl around to get to it.  If one machine is closer to the DC than the other, you may be able to have the hose connect directly to that machine but to the quick connector/hose on the other one.  

--Nathan, TX. Hire the lazy man. He may not do as much work but that's because he will find a better way.