Springtime came early this year, plus the weather warmed up very suddenly.  After a long winter, with the windows shut hard plus the furnace blasting non stop, I was looking forward to getting some fresh air.  I hoped to get at least a couple of weeks separate from running either the heating or cooling system. Instead, the temperature climbed up into the upper seventies almost over the course of half the evening.  The humidity was particularly bad, plus the whole apartment felt warm plus sticky. I lowered the thermostat, started up the cooling system, but never even considered scheduling professional repair, as there was a good deal of labor to do around the house.  I was stressed putting away snow shovels plus wool coats, plus setting up patio furniture plus the barbecue grill. The cooling system operated barely good enough for nearly six weeks. I then noticed it running for much longer cycles but failing to meet demand.  No matter how I adjusted the thermostat each time, the apartment still felt overly warm. I noticed needing to scrub and clean far more often, because there was a good deal of dust circulating in my air. My weekly electric bill was seriously high. I finally got around to hiring a licensed heating and AC business to provide a thorough cleaning plus service of the cooling unit.  The business found a immense buildup of contaminants within the inner workings, which were blocking air flow. She explained that the restricted airflow was causing the cooling system to labor much harder plus putting needless strain on components. Had I waited much longer, the cooling system might have frozen up plus quit completely.