Does anyone make an A/C larger than 15,000 BTU

I added a 5,500 BTU window unit to the bedroom, and closed the door at the bathroom kitchen. Magic. I can report that my bus in the late 80's DID NOT COOL ENOUGH with THREE 13,500 Coleman roof air units (they were new) in 115F, 45% R/H temperatures. I had to add the window unit as described. It boiled down to having crummy insulation, and being parked in the sun.