In Sun City West, near West Via Manana and North 151st Avenue performing Fall preventative maintenance on an Amana split system. Upon arrival, cycled unit into heating mode. Replaced intake filter and took temperature readings from supply and return. At furnace, cleaned and tightened electrical connections. Took volts and amp draws from components. Vacuumed out and wiped down furnace. Checked all safety switches and pressure switches. Inspected gas and flue piping. Upon departure, unit is working properly and within manufacturer specifications.
