woodland park wrote:
I have an Airxcel model 46413-812, that's mounted under my park model, that's always seemed to take a long time to cool our 500 sq ft park model. It's a 13,500 BTU unit, so it's plenty big..The park model has skirting all the way around the unit and the skirting is vented with 3 - 2' x 3' screens to allow airflow under the unit.There is no debris in the coil and the inside air return is clean. The airflow out the 4 vents seems very weak to me. It's 7 years old. I don't believe there's a high or low speed fan connection by looking at the diagram. The other day it was 91 degrees here and the A/C unit ran for 5+ hours before it turned off at 77 degrees.
"Plenty big"? - for 500 sq ft?? Those owning travel trailers in the 30'+ range, which is half your square footage, will often start thinking about adding a second A/C for sufficient cooling. 'Though yours is a basement model it's hard to believe it's any more capable than a conventional 13,500 BTU roof mount unit and if so I'd say your expectations of this unit are unreasonable.
