For those in the South West, there is an issue in the supply chain
for airconditioning/heating parts. The most common parts you use are
Motor Run Capacitor, Micro-Farads (Called CAPS - looks like a beer can) and
BUSSMANN FRN-R- TIME DELAY FRN-R-(Fuses). I recomment looking thru old
repair bills to figure out why kind your system uses and get them ordered.
Store until you need them in a safe place away from anything else.
Someone who is more knowlegable may be able to expand and answer questions.