The average hvac salary at Alief Isd was $48,593 , which is 13 percent lower than the average salary for this job in Texas, and 13 percent lower than the national average for this job . Hvac salaries at Alief Isd typically range from $39,481 to $55,349 (25th to 75th percentile). The highest reported hvac salary was $91,942. There are 16 employees at Alief Isd with the job title hvac.