I read this as: Washington DC HVAC Contractors within 25 miles of Washington, DC.
The same question as a structured link: https://locationlists.com/find?dataset=dc-hvac-contractors&near=Washington+DC&radius=25

LocationLists: Washington DC HVAC Contractors, within 25 miles of Washington, DC

43 contractors match (44 listings, 1 duplicates removed).

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=dc-hvac-contractors&near=Washington+DC&radius=25&area_columns=county:population,median_household_income,median_age
- Census demographics: https://locationlists.com/find?dataset=dc-hvac-contractors&near=Washington+DC&radius=25&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=dc-hvac-contractors&near=Washington+DC&radius=25&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=dc-hvac-contractors&near=Washington+DC&radius=25&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=dc-hvac-contractors&near=Washington+DC&radius=25&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=dc-hvac-contractors&near=Washington+DC&radius=25&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=dc-hvac-contractors&near=Washington+DC&radius=25&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 — 44 rows · $9 (card, no account needed): https://locationlists.com/data/dc-hvac-contractors/buy?src=find
Email me this quote (free, pay later): https://locationlists.com/find/quote?dataset=dc-hvac-contractors&near=Washington+DC&radius=25

Preview (3 fixed sample row(s) from these lists, the same for every question — not a sample of your 43 matches):
- Genesis Company · 3625 Martin Luther King Jr Ave SE, Washington, DC 20032 · +12022707987 [dc-hvac-contractors] — matches your question
- AAA COMPLETE BUILDING SERVICES INC · 5100 WISCONSIN AVE NW, SUITE 500, Washington, DC 20016 [dc-hvac-contractors] — matches your question
- Metropolitan Engineering · 900 19th Street, NW Suite 600, Washington, DC 20006 · 202-296-2580 [dc-hvac-contractors] — matches your question

Where the matches are, by ZIP code (counts only, no names or contact details; 18 ZIP codes):
- 20002: 10
- 20001: 4
- 20011: 4
- 20006: 3
- 20019: 3
- 20020: 3
- 20004: 2
- 20007: 2
- 20008: 2
- 20009: 2
- and 8 more ZIP codes (see https://locationlists.com/find?dataset=dc-hvac-contractors&near=Washington+DC&radius=25&format=json)
Free map of these counts: https://locationlists.com/find/map?dataset=dc-hvac-contractors&near=Washington+DC&radius=25

Left out:
- Washington DC HVAC Contractors: 44 match, but at 44 records this dataset is sold only as the whole file ($9).

Other ways to ask this:
- Wider: within 50 miles of Washington DC: https://locationlists.com/find?dataset=dc-hvac-contractors&near=Washington+DC&radius=50
- Narrower: within 13 miles of Washington DC: https://locationlists.com/find?dataset=dc-hvac-contractors&near=Washington+DC&radius=13
- By drive time instead: within about a 38-minute drive of Washington DC: https://locationlists.com/find?dataset=dc-hvac-contractors&near=Washington+DC&drive=38
- Counts per county instead of rows: https://locationlists.com/find?dataset=dc-hvac-contractors&near=Washington+DC&radius=25&areas=county
- Counts per ZIP code instead of rows: https://locationlists.com/find?dataset=dc-hvac-contractors&near=Washington+DC&radius=25&areas=zip
- Every HVAC Contractors list in the same area: https://locationlists.com/find?category=hvac-contractors&near=Washington+DC&radius=25
- The nearest Vermont HVAC Contractors to each one, with miles: https://locationlists.com/find?dataset=dc-hvac-contractors&near=Washington+DC&radius=25&relate=nearest&k=1&b.dataset=vermont-hvac-contractors&b.near=Washington+DC&b.radius=25

Technical details (developers and AI agents): JSON: https://locationlists.com/find?dataset=dc-hvac-contractors&near=Washington+DC&radius=25&format=json · Nothing is charged until checkout is paid.