If you buy a house directly from a seller, without brokers, have an attorney keep your deposit in and escrow account. Too often, money held by the seller is spent prematurely. If the sale doesn't go though it's important that you can recover your funds.
Insects love warm electrical components and air conditioners are full of them. If you want to keep insects out, experts say do not use insecticides, because the electrical components will not like them. One option is to get a special cover for your relay switch, but be aware that it has to be installed by an air conditioning technician. The cheapest (and easiest) way to keep them away is to use a flea collar. To install the flea collar, shut the power off to the air conditioner and simply placed the collar near the relay switch.