Replacement UV bulb Completed full maintenance on four split system units Checked all wiring and components Tested refrigerant levels, and temperature Tested capacitors Tested fan and compressor amps Flushed out condensate lines Tested float switches Tested blower wheel amps Checked all UV lights Changed all filters and air cleaner pads Took temperature splits from supply and return Units are all up and operating at this time Some of the refrigerant readings were a little off. The superheat was higher than normal. I believe this is due to how long those line sets are. They also go underground at some point. The temperature splits from all the unit units were great. I changed out one UV light that was completely burnt out. I recommend replacing a few more next visit because they are getting old with age and even if the light is still on, they do go bad. Those filters were pretty dirty due to the construction in the house. The air cleaner was doing a fantastic job of preventing the du