Has a freeze up once. Now I must say it was my wifes fault it froze up. She set the thermostat to the lowest setting before we left and 3 hours later it was frozen solid and putting so much strain it burned out the capacitor. I now carry a spare just in case. Only thing I'm worried about is replacing it myself I heard you have to de-energize the old capacitor or something???? And always make sure you wipe up the fluid from the old capacitor it eats anything. If any one knows how to replace one please post it!!!!! Thanks!!