BlueHat Mechanical Delivers a Proven Payback on Commercial HVAC and Refrigeration Maintenance, Repair, and Replacements. Energy Efficiency Preventive Maintenance HVAC Refrigeration With an average of 20 years of experience in commercial refrigeration installation & service, you can count on our technicians to get creative when necessary to get your equipment up and running quickly so you can get back in business. At BlueHat Mechanical, our customers come first. We understand that if your walk-in cooler is down, you stand to lose thousands of dollars of food. If your A/C is down even for a day, it will cost you sales... and some of those customers may never come back.