I have appropriately high expectations which Air Assurance has consistently met or exceeded. Mike Guillen & Mark are exceptionally professional & clearly called to their respective roles in the company. We would never consider using any other company. Both Mike & Mark represent Air Assurance in a way that is unfortunately infrequently experienced in the service industry today. We could not be more pleased with the service that Air Assurance has provided us in re to our heating and Air and plumbing needs.