Market rankings · Maryland
HVAC and plumbing companies in Maryland
Every metro area, small-town market and county in Maryland, ranked by the Groundwork market score for HVAC and plumbing companies, with competitor counts and household spending for each.
- Listings
- 1,478
- 59 chain locations (4%)
- Official establishments
- 1,986
- −4.8% since 2019
- Household spending a year
- $8.1B
- On home repairs, maintenance and insurance
- Listings per 10k households
- 6.3
- In line with the U.S.
- Spending per listing
- $5.5M
- 16% above the U.S.
- Rank among states
- #9 of 51
- Market score 65 · Upper middle
A site report maps the HVAC and plumbing companies on map listings around any address in Maryland by name and distance, and the spending within reach.
Free10 actions over 3 days, no cardSurvey estimates 2020–2024 · population estimates 2025 · official business counts 2023 · map listings September 2026 · Data credits · How we measure
What this means
Maryland has 1,478 HVAC and plumbing companies on map listings as of September 2026. Of those, 59 are chain locations, or 4%, against 4% across the U.S. That is 6.3 per 10,000 households, in line with the U.S. rate of 6.3.
Household spending on home repairs, maintenance and insurance in Maryland comes to about $8.1B a year: $3,443 per household, 14% above the U.S. average. Spread across 1,478 HVAC and plumbing companies, that is $5.5M per company, 16% above the U.S. figure of $4.8M. The spending figure covers all home repairs, maintenance and insurance, not only HVAC and plumbing companies.
The official count of businesses with payroll classed as plumbing, heating and air-conditioning contractors in Maryland was 1,986 in 2023, down 4.8% from 2019. That is one for every 1,190 households, against one for every 1,162 across the U.S. Across the U.S., the count rose 7.6% over the same years. Since fiscal 2022, 78 SBA-backed loans worth $38.5M have gone to businesses classed as plumbing, heating and air-conditioning contractors in Maryland.
Among the 50 states and DC, Maryland ranks #9 for HVAC and plumbing companies, with a Groundwork market score of 65 (upper middle). Of the 6 scored metro areas in or partly in Maryland, the Washington-Arlington-Alexandria metro area scores highest (84). Of the 4 scored small-town markets in or partly in Maryland, the Cambridge area scores highest (63).
Every market in Maryland for HVAC and plumbing companies
Download the ranking (CSV)Numbered by Groundwork market score among the markets based in Maryland, highest first; the U.S. rank compares each market with every other of its kind. A metro area that crosses a state line is listed in each state it reaches, and numbered only in the state its page is under. How the score works.
Metro areas
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| Washington-Arlington-Alexandria, DC-VA-MD-WV | 84 | 1,303 | 5.5 | $7M | +3.3% | #6 of 387 |
| 1Hagerstown-Martinsburg, MD-WV | 71 | 70 | 5.9 | $4.9M | +7.1% | #44 of 387 |
| Philadelphia-Camden-Wilmington, PA-NJ-DE-MD | 66 | 1,506 | 6.1 | $5.6M | +1.4% | #65 of 387 |
| 2Baltimore-Columbia-Towson, MD | 62 | 692 | 6.2 | $5.5M | +0.4% | #92 of 387 |
| 3Salisbury, MD | 51 | 34 | 7.0 | $4.1M | +2.9% | #193 of 387 |
| 4Lexington Park, MD | 39 | 75 | 9.9 | $3.8M | +2.1% | #279 of 387 |
Small-town markets
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Cambridge, MD | 63 | 8 | 5.9 | $4.5M | +3.4% | #105 of 476 |
| 2Cumberland, MD-WV | 60 | 20 | 5.2 | $4.9M | −1.3% | #138 of 476 |
| 3Easton, MD | 39 | 20 | 12.2 | $2.6M | +2.0% | #353 of 476 |
| 4Ocean Pines, MD | 39 | 35 | 14.5 | $2.1M | +3.7% | #355 of 476 |
Counties
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Montgomery County, MD | 81 | 208 | 5.3 | $7.4M | +1.3% | #51 of 1,707 |
| 2Prince George’s County, MD | 76 | 168 | 4.8 | $6.9M | +0.5% | #97 of 1,707 |
| 3Howard County, MD | 73 | 68 | 5.6 | $7.4M | +1.9% | #143 of 1,707 |
| 4Cecil County, MD | 72 | 23 | 5.7 | $5.5M | +3.2% | #170 of 1,707 |
| 5Baltimore city, MD | 70 | 80 | 3.1 | $8.6M | −2.3% | #199 of 1,707 |
| 6Charles County, MD | 66 | 44 | 7.2 | $5.1M | +5.9% | #307 of 1,707 |
| 7Baltimore County, MD | 63 | 199 | 6.0 | $5.4M | −0.7% | #393 of 1,707 |
| 8Frederick County, MD | 63 | 89 | 8.5 | $4.4M | +11.0% | #403 of 1,707 |
| 9Washington County, MD | 62 | 36 | 6.0 | $4.8M | +2.0% | #433 of 1,707 |
| 10Anne Arundel County, MD | 60 | 166 | 7.4 | $5.1M | +1.7% | #495 of 1,707 |
| 11Dorchester County, MD | 56 | 8 | 5.9 | $4.5M | +3.4% | #647 of 1,707 |
| 12Wicomico County, MD | 55 | 31 | 7.7 | $3.8M | +3.2% | #689 of 1,707 |
| 13Garrett County, MD | 52 | 8 | 6.4 | $4.4M | −1.5% | #785 of 1,707 |
| 14Harford County, MD | 51 | 84 | 8.3 | $4.2M | +2.0% | #822 of 1,707 |
| 15Kent County, MD | 51 | 6 | 7.1 | $4.2M | +2.3% | #825 of 1,707 |
| 16Calvert County, MD | 50 | 29 | 8.7 | $4.5M | +1.7% | #853 of 1,707 |
| 17St. Mary’s County, MD | 44 | 46 | 10.8 | $3.4M | +2.4% | #1,079 of 1,707 |
| 18Carroll County, MD | 42 | 65 | 10.1 | $3.6M | +2.2% | #1,141 of 1,707 |
| 19Queen Anne’s County, MD | 40 | 30 | 15.1 | $2.4M | +8.8% | #1,224 of 1,707 |
| 20Allegany County, MD | 39 | 19 | 6.9 | $3.6M | −1.6% | #1,241 of 1,707 |
| 21Talbot County, MD | 35 | 20 | 12.2 | $2.6M | +2.0% | #1,377 of 1,707 |
| 22Worcester County, MD | 34 | 35 | 14.5 | $2.1M | +3.7% | #1,415 of 1,707 |
| 23Caroline County, MD | 27 | 13 | 10.4 | $2.6M | +2.5% | #1,555 of 1,707 |
| Somerset County, MD | Not scored | 3 | 3.6 | $6.9M | +1.7% |
Markets with fewer than 5 HVAC and plumbing companies on map listings, and counties under 10,000 people, aren’t scored; they’re listed last in each table.
Questions
How many HVAC and plumbing companies are in Maryland?
Map listings as of September 2026 show 1,478 HVAC and plumbing companies in Maryland. 59 of them (4%) are chain locations. The listings count heating and air-conditioning companies and plumbers. Official counts show 1,986 businesses with payroll classed as plumbing, heating and air-conditioning contractors in 2023, down 4.8% from 2019.
How much do households in Maryland spend on home repairs, maintenance and insurance?
About $8.1B a year, or $3,443 per household. That is 14% above the U.S. average (an index of 114, where 100 is the U.S. average). Spread across the 1,478 HVAC and plumbing companies on map listings, it comes to $5.5M per company. That spending covers all home repairs, maintenance and insurance, which HVAC and plumbing companies share with other businesses in the trade. It is estimated from the incomes of the 2,362,928 households in Maryland and national spending patterns by income.
How does Maryland compare with the U.S. for HVAC and plumbing companies?
Maryland has 6.3 HVAC and plumbing companies per 10,000 households, in line with the U.S. rate of 6.3. Spending per company is $5.5M, 16% above the U.S. figure of $4.8M. At the U.S. ratio of HVAC and plumbing companies to household spending, Maryland would have about 1,710, against 1,478 on map listings. There is one business with payroll in the industry for every 1,190 households, against one for every 1,162 across the U.S. The official count fell 4.8% from 2019 to 2023, against +7.6% for the U.S.
Which market in Maryland has the highest market score for HVAC and plumbing companies?
Among 6 scored metro areas in or partly in Maryland, the Washington-Arlington-Alexandria metro area scores highest, at 84 (high). Among 4 scored small-town markets in or partly in Maryland, the Cambridge area scores highest, at 63 (upper middle). Among 23 scored counties in Maryland, Montgomery County scores highest, at 81 (high). Scores compare each market with others of its kind across the U.S.
What is the Groundwork market score?
The Groundwork market score runs from 0 to 100 and compares a market with others of its kind for one business type: states with states, metro areas with metro areas, small-town markets and counties with their own. It weighs household spending per competitor (35%), households per business with payroll (25%), population growth (20%) and spending power (20%), each ranked against those peers. A higher score means that, taken together, the market has more household spending and more households for each business already there, faster population growth and more spending per household than similar markets. It describes a market, not any one site or deal. Maryland scores 65 for HVAC and plumbing companies (upper middle), #9 of the 50 states and DC.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Maryland. It maps the HVAC and plumbing companies on map listings near the site and sizes the households and spending within the distance you choose. New accounts get 10 actions over 3 days, no card.
HVAC and plumbing in other states
All 51 states
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Top markets for HVAC and plumbing companies across the U.S. · All business types in Maryland
Related business types in Maryland
- Home repair trades2,882 listings
- Electricians636 listings
- Roofing and gutters768 listings
- Lawn, cleaning and pest control2,039 listings
- Landscaping and lawn care1,149 listings
- House cleaning588 listings
- Pest control302 listings
Screening a site or an acquisition in Maryland?
A site report maps the competitors on map listings near an address and sizes the households and spending around it.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Figures are estimates for research only. Not investment or real estate advice.