Quote: They leak when not used, like Car A/C unites.
Try and use once a month...
I think that electrically powered fridges are different from car A/C units as the former are fully sealed with electrical connections to transmit the power in whereas car A/C units feature a belt/ pulley/ shaft/seal. Shaft seals certainly leak if the unit is left idle but run them at least once a week and they'll go on for years. My current car's air con has been trouble-free for 10 years so far.