NAICS 238220 · Maryland
Plumbing, Heating, and Air-Conditioning Contractors Business Names in Maryland
Maryland has 2,048 plumbing, heating, and air-conditioning contractors locations, ranking #17 of 51 states and D.C. and making up 1.9% of the U.S. total.
Name ideas for a Maryland plumbing, heating, and air-conditioning contractors business
Before you commit, search the Maryland business entity database (linked below) to make sure the name is not already registered there.
Plumbing, Heating, and Air-Conditioning Contractors in Maryland by the numbers
Locations by number of employees in Maryland
Source: U.S. Census Bureau, County Business Patterns 2022. Counts cover employer establishments (businesses with paid employees); self-employed owners without staff are not included. Small establishments with 1–4 employees include those that reported no paid employees in mid-March.
Register your business name in Maryland
In most states you check name availability and form an LLC or corporation through the Secretary of State (or equivalent) office, then register with the state tax and labor agencies if you will collect sales tax or hire employees. Official Maryland links:
- Maryland Business Express – Registrations and Filings
- Secretary of State
- Comptroller of Maryland - Information for Business Taxpayers
- Maryland Department of Labor
- Unemployment Insurance
- Maryland state website
- Maryland Business Resources
- Department of Commerce
- Occupational & Professional Licensing
- Charter Business Services
- New Hire Registry
- Small Business Administration - Maryland
- Maryland Code
- Department of General Services
- Maryland Checklist for New Businesses
Official state agency links as listed by the IRS on its Maryland state links page. Filing fees and steps change, so confirm current requirements with the agency before you file.
Other states for plumbing, heating, and air-conditioning contractors
See the national plumbing, heating, and air-conditioning contractors page → · Top industries in Maryland →