Responsibilities:
- Present a positive image to customers, co-workers, and others at all times
- Follow all service department and company policies and procedures
- Adhere to all company safety policies
- Attend training to improve HVAC industry knowledge
- Perform preventative maintenance; identify potential issues (e.g., contactors, relay coils, over-amping devices, loads, transformers, motors)
- Perform electrical troubleshooting; able to read various wiring diagrams (ladder, schematic, parallel, series circuits)
- Understand all phases of line voltage (single phase, three phase, part start windings, two-speed motors, variable frequency drives)
- Understand general fan laws: RPM, speed, how pulley or sheave changes and belt sizing affect amperage draw
- Calculate CFM using heat rise or static pressure method
- Understand piping systems: refrigerant, water, gas, condensate, pumps, valves (single/two-pipe systems, bypass circuits, modulating valves, circuit setters)
- Understand water source equipment: water-cooled condensers, chillers, cooling towers, fluid coolers, basic water treatment knowledge
- Calculate wire sizes, fuses, and circuit breakers for both low and line voltage loads
- Install and program common DDC controls (e.g., Carrier, Trane)
- Understand operation differences between VAV and VVT boxes
- Identify and work with all types of thermostats: low/line voltage, standard, programmable, digital, and time clocks
- Perform leak detection for water and refrigerant systems
- Possess knowledge of semi-hermetic compressors (change unloaders, valves, valve plates, internal bypass plugs; diagnose mechanical and electrical failures)
- Understand relationships between temperature, pressure, humidity, and their effects on indoor air comfort and quality
- Understand the purpose and process of test and balance for building performance, pressure control, and comfort
- Diagnose and repair all types of heating and cooling issues as required
- Possess all necessary tools to complete tasks listed in the job description
Qualification:
- Physical activities include standing, balancing, climbing stairs and ladders
- Must be able to walk and lift 20 pounds or more as part of daily job duties
- Requires use of upper extremities for forward and overhead reaching, pushing, pulling, and material handling
- Requires use of torso and lower extremities for kneeling, crawling, stooping, twisting, and squatting