Step1: Make a business plan that defines essential areas like target market, local competition, business structure, HVAC marketing strategies/Ideas, financial constraints, areas of service, etc. Step 2: Setting up an HVAC business is not cheap; thus, determine the costs regarding the start-up from the beginning itself. If you buy every single tool and vehicle upfront, the costs can easily go up to $100,000. Step3: Get the required skills and HVAC certification Step 4: Bring in more professionalism by setting up a website, business email, emergency service number, etc. Step 5: Use marketing strategies like HVAC digital marketing to promote your brand, services, and specialization in the target area.