Office Hours  Monday through Friday 7 a.m. to 5 p.m.  24 hour - 7 day emergency service Areas of Expertise * Residential * Commercial * Service * Preventative   Maintenance * New Construction * Ventilation * Upgrades    Family Owned and Operated Maintenance Our unique service plan offers many benefits that other companies don't cover. Precision Tune-Ups:  This will provide two precision tune-ups a year, one in the spring and one in the fall. These will be performed by a qualified service technician to insure that your equipment is operating safely and at peak performance. Parts Discount:  Will provide a 15% Discount on repair parts to keep your equipment listed in your agreement in proper working condition. Labor Discount:  Will offer normal service rates for calls scheduled outside of our regular operating business hours of Monday through Friday, from 8am to 5pm. Equipment Discount:  Will provide a 10% Discount on replacement equipment. Additional Benefits:  Preferred treatment in scheduling all service calls, Monday through Friday from 8am to 5pm. On call technician for after-hours emergencies.  (Overtime charges will not apply) We will automatically extend your service agreement upon expiration with a reminder letter Naturally you are always free to cancel our services at any time with no penalty. Jett Mechanical Air Conditioning - Heating - Refrigeration 24hr Service Call: (520) 744-7414 Southern AZ’s Comfort Specialists 24 / 7 emergency response technicians Items Include: * Check operating pressures. * Check for proper refrigerant charge. * Up to 2lbs.  R-22 included. * Check evaporator superheat. * Check temperature of the return and supply air. * Flush and clean condensate drain. * Lubricate all oil able parts. * Check belt and adjust tension as appropriate. * Check filter and change standard filter if needed. * Check all safety and operational controls. * Check voltage and amperage to all motors. * Check start capacitor and relays. * Check the operation of the compressor contactor. * Check all wiring and connections inside the unit and disconnect box. * Inspect thermostat and observe its operation. * Check the gas burners. * Check the pilot assembly. * Check the thermocouple. * Check the gas burner flame and adjust gas pressure if necessary. * Check the heat exchanger. * Check the flue venting. * Check the fan control. * Check the limit safety device and electrical wiring. * Check the blower speed. * Check the amp draw of the motor, * Check belt and adjust tension if needed. * Lubricate all oil able parts. * Check filter and change standard filter if needed. * Inspect thermostat and check the heat anticipator setting. * Check for sage operation