Hvac companies in Maryland
1,288 active HVAC companies tracked in Maryland. Vendor-facing rankings by review count and growth velocity, plus verified owner contacts. Refreshed weekly.
across Maryland
22% of tracked HVAC companies
chain-influenced
13% of Maryland
Available rankings
Browse the Maryland HVAC company market by total reviews or by current growth, with verified owner contacts behind each ranking.
Fastest growing Maryland HVAC companies
Active HVAC companies opening new locations and picking up new reviews in the last 90 days.
Largest Maryland HVAC companies
#1 Len The Plumber Heating & Air · 46,561 reviews
About the Maryland HVAC company market
Orbital tracks 1,288 active HVAC companies across Maryland, 162 of which operate multiple locations. The top 25 by review count account for 51% of all reviews in the market, a concentrated leadership tier with strong brand equity.
The remaining 1,126 HVAC companies are single-location independents, the long tail that B2B vendors typically need higher-volume prospecting motions to reach.
Common questions
How many HVAC companies are in Maryland?
Orbital tracks 1,288 active HVAC companies across Maryland. 162 of them operate multiple locations; 1,126 are single-location independents.
Which Maryland HVAC company has the most reviews?
Len The Plumber Heating & Air leads Maryland HVAC companies with 46,561 total reviews across all locations. See the full Largest 25 ranking above for the rest of the leaders.
How concentrated is the Maryland HVAC company market?
The top 25 HVAC companies hold 51% of all review volume in Maryland. 289 HVAC companies have 100+ reviews; the long tail is dominated by single-location independents under 100 reviews.
Are most Maryland HVAC companies independent or chains?
87% of Maryland HVAC companies are single-location independents. The remaining 13% (162 businesses) operate two or more locations , these are the most common targets for B2B vendors selling into expanding HVAC company chains.
Where can I get verified contact info for Maryland HVAC company owners?
Every HVAC company in the Largest 25 and Fastest Growing rankings above unlocks verified owner / GM contacts: mobile phones, work emails, and decision-maker titles. Contacts come from a separate 20+ source scan and refresh monthly.
Methodology
This HVAC company directory tracks active businesses across Maryland and rolls them up by business name. Records refresh weekly from 12+ public and private data sources, independently verified against at least two of them. Owner contacts come from a separate 20+ source scan and refresh monthly.
For a national view of HVAC company industry data, browse every metro and state in the directory.
About Orbital
Orbital is the Zoominfo for companies selling to SMBs. Our platform enables companies to get their whole TAM (total addressable market) in a box, find contacts not on LinkedIn, and score accounts with custom ICP attributes. The HVAC company directory you're reading right now is one slice of that platform, covering every US metro and state. See why companies including Instacart, Classpass, and Jobber are using Orbital today.
Everything you need to sell to HVAC companies
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