It's Time To Make HVAC Cool Again. The Blue-Collar worker is dedicated, strong and hardworking. HVAC Tactical wants to support the HVAC trade and the Blue-Collar worker by offering inspired clothing options for everyday wear. Shop for your new favorite t-shirt, or pick up a brand-new hat for your loved one. When you put on a piece of our apparel, it's a statement - A statement that says you've made the choice to be the best at what you do.