Maryland HVAC license lookup: how to check and get a license
Maryland HVAC license lookup: who issues HVAC contractor licenses (Maryland State Board of Heating, Ventilation, Air-Conditioning and Refrigeration Contractors (Maryland Department of Labor)), how to check one online, the license types, and 1,986 plumbing, heating and air-conditioning contractors by county.
Do HVAC contractors need a license in Maryland?
| Who licenses them | Maryland State Board of Heating, Ventilation, Air-Conditioning and Refrigeration Contractors (Maryland Department of Labor) |
|---|---|
| License types | Master, Master Restricted, Limited Contractor, Journeyman, Journeyman Restricted, Apprentice |
| When a license is required | Unknown (no dollar threshold stated; apprentices may not work alone or contract) |
Hire a Master, Master Restricted or Limited contractor; journeymen and apprentices work under a licensed contractor. Refrigerant work also requires federal EPA Section 608 certification.
How do you look up an HVAC contractor's license in Maryland?
- Ask the HVAC contractor for the license number and the exact business name on the license.
- Open the Maryland HVAC license lookup run by Maryland State Board of Heating, Ventilation, Air-Conditioning and Refrigeration Contractors (Maryland Department of Labor).
- Search by license number first. A name search can return several people or companies with similar names.
- Check that the status is active or current, that the license type covers your job, and that the name matches the company on your contract.
- If something doesn't match, ask the HVAC contractor about it before you sign or pay a deposit, or contact Maryland State Board of Heating, Ventilation, Air-Conditioning and Refrigeration Contractors (Maryland Department of Labor).
What HVAC licenses does Maryland issue?
- Master
- Master Restricted
- Limited Contractor
- Journeyman
- Journeyman Restricted
- Apprentice
How do you get a HVAC license in Maryland?
Licenses are issued by the Maryland State Board of Heating, Ventilation, Air-Conditioning and Refrigeration Contractors (Maryland Department of Labor). Requirements such as experience, exams, insurance and fees change, so read the current rules on the official Maryland State Board of Heating, Ventilation, Air-Conditioning and Refrigeration Contractors (Maryland Department of Labor) source before you apply. Already licensed? List your business on Expert Helper to get matched with customers.
Which Maryland city is the job in?
How many HVAC contractors are there in Maryland?
The Census Bureau counted 1,986 plumbing, heating and air-conditioning contractors with employees in Maryland in 2023. The counties with the most:
| Baltimore County | 270 |
|---|---|
| Montgomery County | 247 |
| Anne Arundel County | 246 |
| Prince George's County | 229 |
| Harford County | 125 |
| Frederick County | 119 |
| Carroll County | 113 |
| Howard County | 112 |
What do Maryland homes mean for heating and cooling work?
The median home in Maryland was built in 1979, 33% of households rent and 72% of homes are single-family houses. 43% of homes heat with utility gas and 43% with electricity, and 7% with fuel oil.
How do you choose an HVAC contractor in Maryland?
- Check the state or local mechanical or HVAC license, and ask whether the technicians hold EPA 608 certification for refrigerant work.
- For a new system, ask for a load calculation (often called Manual J) rather than a size picked from square footage.
- Ask which rebates and tax credits apply to heat pumps and high-efficiency equipment, and whether the contractor files the paperwork.
- Compare quotes on the same equipment model numbers and efficiency ratings (SEER2, HSPF2, AFUE).
- Ask what the labor warranty covers, separately from the manufacturer's parts warranty.
HVAC Contractors in other states
Sources: Maryland licensing agency (linked above); US Census Bureau County Business Patterns 2023 and ACS 2023 5-year estimates.