Responded to no cool, found 40/5 voltage absorption system reading 40.6nf/4.7uf. Dead herm. Quoted hn13. Customer chose option c for upgraded part and surge protection. Retrieved parts. Performed repair. Cycled system. 20 degree deltat. 75/55. Clean 16251 filter. Merv 13. Customer asked about higher rated filter. Expained pros and cons. Customer will test out this winter and revert back to merv 8 if need be.