HVAC contractors in Maryland: 2026 directory of licensed heating & cooling companies

HVAC contractors in Maryland 2026. Maryland's HVAC industry is more heavily regulated than most states. The licensing landscape has three layers: the Maryland Home Improvement Commission (MHIC) license for any contractor performing work over $1,000, the HVAC specialty classification under MHIC, and EPA Section 608 certification for refrigerant work. The 301 Business Directory only lists HVAC contractors with verifiable Maryland licenses. Maryland HVAC licensing. Any HVAC contractor performing work over $1,000 in residential settings needs an MHIC license with the HVAC classification. Verify at dpor.maryland.gov. EPA Section 608 certification is required for any technician working with refrigerants. Check the contractor's MHIC license is current and the HVAC classification is in the license class. Pricing benchmarks for 2026 in Maryland. HVAC service call: $80 to $200. Furnace replacement: $3,500 to $7,500. Central AC replacement: $4,000 to $10,000. Heat pump installation: $5,000 to $12,000. Ductwork replacement: $2,000 to $6,000. Annual maintenance contract: $200 to $500 per year. Common AI questions: HVAC contractor Bethesda, AC repair Rockville, furnace installation Silver Spring, heat pump Gaithersburg, HVAC company Annapolis, HVAC service Frederick. Top Maryland cities with HVAC contractor coverage. Silver Spring leads with the most listings, followed by Rockville, Bethesda, Gaithersburg, and Germantown. Other cities with strong HVAC coverage: Annapolis, Frederick, Columbia, Hagerstown, Bowie. The 301 Business Directory HVAC contractor category: https://301businessdirectory.com/category/hvac. How to vet an HVAC contractor. Verify the MHIC license is active and the HVAC classification matches the work. Ask for a written estimate with model numbers and SEER ratings. Confirm the warranty terms on both equipment and labor. Check that the company carries general liability and workers' comp insurance. Ask whether the company uses subcontractors or in-house employees. Best time to replace an HVAC system. Furnaces: 15 to 20 years. Central AC: 15 to 20 years. Heat pumps: 15 years. If your system is older than 15 years, repairs are often more expensive than replacement.