roof ac question

[max6220]

getting my roof ac unit this week, question is what a I better off getting 13500 or 15000. I have 30 amp service, trailers is 7x16x7 high is insulated, trailer has light package , 4 cu ft fridge, tv. thank you for your input. Steve ( looking at Dometic brand)

[daveesl77]

My 25' coachmen trailer had a 12,000 btu single roof unit and it had no problem handling everything from Florida to New Mexico summers. I like it cold too, but we'd have to cycle that thing down to low. I don't remember the brand though.

dave

[Shadow Catcher]

There are calculations that can be found. The risk of a too large AC is that it short cycles and does not dehumidify. Our 5,000 BTU adapted window shaker cools out 400 cubic foot tear very well.