Depending on the brand and model, a swamp cooler should be checked at least once a year. A home service pro typically checks areas such as the water level in the reservoir, the belt tension and the filter pads in the system.
Rico is a solid hvac service technician. He was thorough, professional and competent. He pointed out things that I never knew before. Also, he took his time and didn't fly out of here in 15 minutes like some other techs...
Needed to change my previous water heater quickly. They were able to come the following day and set up the tankless water heater in less than three hours. Professional service and good communication.