844-JOB-HVAC › HVAC lead territories › Maryland › Baltimore County

Exclusive HVAC leads in Baltimore County, Maryland

Baltimore County, Maryland is divided into 34 town territories covering 37 ZIP codes, listed in full below. Each ZIP goes to exactly one HVAC contractor: $149 for the first month, then $299 a month, with every lead included and no per-lead charges. Check which of these are still open →

34Town territories
37ZIP codes
3Max ZIPs per contractor
1Contractor per ZIP

Coverage verified 2026-08-17 against the live territory database.

Every town and ZIP code in Baltimore County

HVAC territory coverage in Baltimore County, Maryland — 34 towns, 37 ZIP codes, verified 2026-08-17.
TownZIP codes
Baldwin21013
Bentley Springs21120
Catonsville21228
Cockeysville Hun21030, 21031
Dundalk Sparrows21219, 21222
Essex21221
Eudowood21204
Fork21051
Fort Howard21052
Fowbelsburg21155
Freeland21053
Glen Arm21057
Glencoe21152
Glyndon21071
Granite21163
Gwynn Oak21207, 21244
Halethorpe21227
Hereford21111
Hydes21082
Jacksonville21131
Kingsville21087
Lutherville21093
Maryland Line21105
Middle River21220
Nottingham21236
Owings Mills21117
Parkville21234
Perry Hall21128
Pikesville21208
Randallstown21133
Reisterstown21136
Rosedale21237
Upper Falls21156
White Marsh21162

How a Baltimore County territory works

When a homeowner in one of the ZIP codes above dials 844-JOB-HVAC (844-562-4822), the call is answered by an AI agent that qualifies the job, asks the homeowner to text a photo of the unit, and generates a damage estimate from that photo. You then receive one SMS containing the homeowner's name, phone number, address, problem description, the photo, and the estimate — before you call back. Nothing about that lead is sold to another contractor.

A contractor may hold up to 3 ZIP codes. Read the full mechanism on how it works, or compare the economics against shared-lead platforms in exclusive vs shared HVAC leads.

← All Maryland HVAC territories

Claim your ZIP in Baltimore County, MD

One HVAC contractor per ZIP code. $149 your first month, then $299 a month per ZIP. Every lead arrives by SMS with the homeowner's name, phone, address, a photo, and an AI damage estimate. No per-lead charges, no shared leads, cancel anytime.

Check availability →