Can't say enough good things about this company and their people. Responsive, professional, friendly and competent. They came into a situation with our business where equipment had never really run right and methodically went through each unit to diagnose and treat the many ailments. It has been a struggle, to be sure, and it hasn't been cheap. But I believe the rates have been reasonable and appropriate and our interior climate has improved dramatically. David Cummons normally comes out and he doesn't leave until the problem is fixed. We have great confidence in David and Spencer Air.