LocationLists: Maryland HVAC Contractors, licensed = Y

394 contractors match.

The file is the list as published. Add the essentials (county population, median household income and median age) or a group of area data to every row below.
Add more area data to every row (each link reloads this answer with those columns added, and the buy link then delivers them):
- Add the essentials: https://locationlists.com/find?dataset=maryland-hvac-contractors&where=licensed:eq:Y&area_columns=county:population,median_household_income,median_age
- Census demographics: https://locationlists.com/find?dataset=maryland-hvac-contractors&where=licensed:eq:Y&area_columns=county:population,households,median_household_income,median_age,pct_65_plus,pct_bachelors_plus,housing_units,owner_occupied_share,median_home_value,population_estimate,population_growth_since_2020,pct_under_18,pct_5_to_14,pct_households_with_people_under_18
- Business activity by industry: https://locationlists.com/find?dataset=maryland-hvac-contractors&where=licensed:eq:Y&area_columns=county:establishments,employees,agriculture_establishments,mining_establishments,utilities_establishments,construction_establishments,manufacturing_establishments,wholesale_trade_establishments,retail_trade_establishments,transportation_establishments,information_establishments,finance_establishments,real_estate_establishments,professional_establishments,management_establishments,administrative_establishments,educational_services_establishments,health_care_establishments,arts_establishments,accommodation_establishments,other_services_establishments
- Weather normals: https://locationlists.com/find?dataset=maryland-hvac-contractors&where=licensed:eq:Y&area_columns=county:january_high,july_high,annual_high,january_low,july_low,annual_low,annual_precipitation,annual_cooling_degree_days,annual_heating_degree_days,hottest_month_high,coldest_month_low,annual_snowfall,annual_days_of_highs_reaching_90_f,annual_days_of_highs_reaching_100_f,growing_season_length_20f_50pct
- Storms: https://locationlists.com/find?dataset=maryland-hvac-contractors&where=licensed:eq:Y&area_columns=county:flash_flood_events,flood_events,hail_events,high_wind_events,hurricane_events,lightning_events,thunderstorm_wind_events,tornado_events,wildfire_events,winter_storm_events,strong_tornadoes,storm_injuries,storm_deaths,storm_property_damage,storm_crop_damage
- Drought: https://locationlists.com/find?dataset=maryland-hvac-contractors&where=licensed:eq:Y&area_columns=county:palmer_drought_severity_index,palmer_hydrological_drought_index,modified_palmer_drought_index,palmer_z_index,palmer_drought_severity_index_2025,palmer_hydrological_drought_index_2025,modified_palmer_drought_index_2025,palmer_z_index_2025
- Building stock: https://locationlists.com/find?dataset=maryland-hvac-contractors&where=licensed:eq:Y&area_columns=county:buildings,multi_story_buildings,mid_rise_buildings,high_rise_buildings,buildings_4_floors_plus,buildings_8_floors_plus,share_with_floors_published,share_with_height_published,building_footprint_area,estimated_floor_area,average_building_height,tallest_building_height
This list is sold whole.
Buy the whole list — 1,277 rows · $19 (card, no account needed): https://locationlists.com/data/maryland-hvac-contractors/buy?src=find
Email me this quote (free, pay later): https://locationlists.com/find/quote?dataset=maryland-hvac-contractors&where=licensed:eq:Y

Preview (3 fixed sample row(s) from these lists, the same for every question — not a sample of your 394 matches):
- LIMBACH COMPANY LLC · 13261 MID ATLANTIC BLVD, Laurel, MD 20708 [maryland-hvac-contractors] — matches your question
- RENOVATIONS EXPERT INC · 5824 HUBBARD DR, Rockville, MD 20852 [maryland-hvac-contractors] — matches your question
- Multi-Aire · 29740 Charlotte Hall Rd, Charlotte Hall, MD 20622 · +13018563400 [maryland-hvac-contractors] — does not match your question

Where the matches are, by ZIP code (counts only, no names or contact details; 157 ZIP codes):
- 20705: 11
- 20850: 11
- 21502: 11
- 20879: 10
- 20735: 9
- 20743: 9
- 20772: 9
- 21114: 9
- 21703: 8
- 21740: 8
- and 147 more ZIP codes (see https://locationlists.com/find?dataset=maryland-hvac-contractors&where=licensed:eq:Y&format=json)
Free map of these counts: https://locationlists.com/find/map?dataset=maryland-hvac-contractors&where=licensed:eq:Y

Left out:
- Maryland HVAC Contractors: 394 match, but at 1,277 records this dataset is sold only as the whole file ($19).

Other ways to ask this:
- Counts per county instead of rows: https://locationlists.com/find?dataset=maryland-hvac-contractors&where=licensed:eq:Y&areas=county
- Counts per ZIP code instead of rows: https://locationlists.com/find?dataset=maryland-hvac-contractors&where=licensed:eq:Y&areas=zip
- Every HVAC Contractors list in the same area: https://locationlists.com/find?category=hvac-contractors&where=licensed:eq:Y
- The nearest Tennessee HVAC Contractors to each one, with miles: https://locationlists.com/find?dataset=maryland-hvac-contractors&where=licensed:eq:Y&relate=nearest&k=1&b.dataset=tennessee-hvac-contractors&b.where=licensed:eq:Y

Technical details (developers and AI agents): JSON: https://locationlists.com/find?dataset=maryland-hvac-contractors&where=licensed:eq:Y&format=json · Nothing is charged until checkout is paid.