Dear Ken: Is it wise to have an annual service on my A/C system? Or just the furnace only? Larry
It’s absolutely a good idea for older systems. They can have issues with low refrigerant and dirty evaporator coils (the ones on top of the furnace that do the actual cooling). However, if you’re A/C system is relatively new, say 15 years or less, I think an every-other-year approach is OK (but the furnace should be looked at annually, regardless of its age)....