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Plumbers and heating and cooling contractors in Frederick County, MD

  • 96

    Contractors

  • 44

    With Google ratings

  • 36

    Registered 10+ years

96 plumbers and heating and cooling contractors are listed in Frederick County. 52 hold an active USDOT registration.

Of the 52 with a fleet size on record, 45 run one to three trucks and 7 run four to ten. Frederick has the most contractors with 31, then Frederick with 24 and Mount Airy with 5.

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Contractors 1 to 50 of 96

  1. Smock Heating & Air
    Frederick5.0 from 1800 reviews via Google
    (301) 945-7220
  2. Honest Air Heating & Air Conditioning
    Mt Airy5.0 from 1000 reviews via Google
    (301) 943-0833
  3. May's Heating & Air Conditioning
    Frederick5.0 from 989 reviews via Google
    (301) 660-1400
  4. Honest Air Heating & Air Conditioning
    Frederick5.0 from 567 reviews via Google
    (240) 931-0112
  5. BPM Heating, Cooling & Plumbing
    Frederick5.0 from 447 reviews via Google
    (240) 887-1089
Map of plumbers and heating and cooling contractors in Frederick County, MD
Pins mark ZIP code areas. A number shows how many contractors share that ZIP code.
  1. Masterpiece Plumbing & Drain, LLC
    Frederick5.0 from 415 reviews via Google
    (240) 357-2615
  2. Urbana HVAC
    5.0 from 212 reviews via Google
    (240) 723-3860
  3. Outlook plumbing and Drain cleaning L.L.C
    Frederick5.0 from 211 reviews via Google
    (240) 439-0893
  4. Mallick Plumbing & Heating, Inc.
    Frederick5.0 from 164 reviews via Google
    (301) 200-8420
  5. Amerilogic
    Frederick5.0 from 147 reviews via Google
    (301) 676-9234
  6. Wenbrooke Services AC Repair, Plumbing, Heating and Electrician
    Frederick5.0 from 125 reviews via Google
    (240) 628-7094
  7. Alexair Heating & Cooling, LLC
    Frederick5.0 from 123 reviews via Google
    (301) 302-9415
  8. Tri-County Pump Service, Inc.
    Frederick5.0 from 82 reviews via Google
    (301) 215-2506
  9. LP Home Plumbing & Drain Cleaning, LLC.
    5.0 from 64 reviews via Google
    (301) 305-9654
  10. Genesis Flow Plumbing & Drains LLC
    5.0 from 62 reviews via Google
    (240) 385-7456
  11. Harmonious Plumbing LLC
    New Market5.0 from 57 reviews via Google
    (301) 882-5763
  12. Eagle Plumbing LLC
    Frederick5.0 from 39 reviews via Google
  13. Homeland Heating and Air Conditioning
    Walkersville5.0 from 25 reviews via Google
    (240) 446-5288
  14. Yellow Springs Plumbing
    5.0 from 18 reviews via Google
    (410) 777-0043
  15. Exxel Mechanical Services
    Frederick5.0 from 17 reviews via Google
    (410) 692-8515
  16. Prime AC Repair Frederick
    Frederick5.0 from 7 reviews via Google
    (227) 226-1374
  17. Tuckers Air Conditioning, Heating & Plumbing
    Frederick4.9 from 1700 reviews via Google
    (301) 670-0034
  18. Putman Plumbing
    Middletown4.9 from 1200 reviews via Google
    (301) 371-4395
  19. Frederick Air Inc
    Frederick4.9 from 891 reviews via Google
    (301) 845-5652
  20. Markool Heating Cooling Plumbing
    Frederick4.9 from 592 reviews via Google
    (301) 732-4244
  21. Zo Plumbing and Drain Cleaning LLC
    Frederick4.9 from 144 reviews via Google
    (301) 401-1181
  22. One Hour Air Conditioning & HeatingĀ®
    4.9 from 122 reviews via Google
    (301) 284-0896
  23. Holtzople Heating, Air Conditioning & Electrical Services | Frederick
    Frederick4.9 from 83 reviews via Google
    (301) 558-1966
  24. Most Valuable Plumber Inc
    Walkersville4.9 from 66 reviews via Google
    (301) 748-9177
  25. Above and Beyond Plumbing & Heating
    Frederick4.9 from 38 reviews via Google
    (240) 216-8767
  26. TriState Home Services
    Frederick4.8 from 1800 reviews via Google
    (301) 241-0429
  27. Larry & Sons Plumbing, Heating, Cooling, Drain & Electrical
    Frederick4.8 from 1100 reviews via Google
    (240) 232-8985
  28. Warner Service
    Frederick4.8 from 574 reviews via Google
    (301) 200-9774
  29. All Around Plumbing Inc
    Frederick4.8 from 374 reviews via Google
    (301) 698-1028
  30. B&B Air Conditioning & Heating Service
    Frederick4.8 from 273 reviews via Google
    (301) 485-7693
  31. Constellation Home
    Frederick4.8 from 99 reviews via Google
    (888) 243-4663
  32. United Air Temp
    Frederick4.7 from 926 reviews via Google
    (410) 424-5803
  33. One Hour Air Conditioning & Heating
    Mount Airy4.7 from 863 reviews via Google
    (301) 515-1001
  34. Benjamin Franklin Plumbing of Frederick
    Frederick4.7 from 201 reviews via Google
    (301) 265-2088
  35. Ne Bob Waltz Plumbing & Heating Inc
    Frederick4.6 from 105 reviews via Google
    (301) 662-3588
  36. Airtron Heating & Air Conditioning
    Frederick4.5 from 805 reviews via Google
    (301) 696-0101
  37. Michael & Son Services
    Frederick4.5 from 260 reviews via Google
    (240) 820-3106
  38. Akron Industrial Heating & Cooling
    Frederick4.4 from 7 reviews via Google
  39. Brick Street Plumbing & HVAC
    Frederick4.1 from 398 reviews via Google
    (301) 969-4911
  40. Warner Mechanical - Warner Construction - Kaempf and Harris Custom Sheetmetal
    Frederick
    (301) 662-5387
  41. J C Harris Plumbing & Heating Inc
    Middletown
    (301) 371-7574
  42. Kelco Plumbing and Backhoe Service LLC
    Thurmont
    (240) 288-7061
  43. Micks Plumbing & Heating
    Thurmont
    (301) 271-2488
  44. Shary's Plumbing LLC
    Monrovia
    (301) 229-6695
  45. WRF & Son Plumbing & Heating Inc
    Mount Airy
    (301) 829-1711
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Ranked by verified owner, then a Google rating of 4.0 or higher, then review count, then fleet size. A lower rating is still shown, and ranks with the listings we hold no rating for. How ranking works

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Services in Frederick County

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Homes in Frederick County

Half the homes in Frederick County were built before 1991, 35% before 1980 and 17% before 1960. (Census Bureau American Community Survey table B25035, 2020 to 2024 5-year estimates; Census Bureau American Community Survey table B25034, 2020 to 2024 5-year estimates)

From 1991 to 2020, Frederick County averaged 4,938 heating degree days and 952 cooling degree days a year. (NOAA NCEI nClimDiv county heating degree days, 1991 to 2020 averages; NOAA NCEI nClimDiv county cooling degree days, 1991 to 2020 averages)

In Frederick County, 51% of occupied homes heat with electricity, 34% with utility gas and 8% with fuel oil or kerosene. (Census Bureau American Community Survey table B25040, 2020 to 2024 5-year estimates)

Plumbing and HVAC rules in Maryland

What plumbing and HVAC work costs in Maryland

Ranges are national; ask contractors near you.

A plumber's hourly rate
$45 to $200 an hour; most charge $70 to $150 (HomeAdvisor, Fixr, HomeGuide)
A plumber's service call
$50 to $300 a visit, which often covers the first hour (HomeAdvisor, Fixr, HomeGuide)
After-hours or emergency call
about $100 to $300 added to the call, or about $150 to $350 an hour (HomeAdvisor, Fixr, HomeGuide)
Burst or leaking pipe repair
$200 to $3,000; the guides' averages run $500 to $1,200 (HomeAdvisor, Fixr, HomeGuide)
Clearing a sink, tub or toilet drain
$100 to $275 (HomeAdvisor, Fixr, HomeGuide)
Clearing the main line
$175 to $800; typically $350 to $650 (HomeAdvisor, Fixr, HomeGuide)
Hydro jetting
$350 to $1,400, depending on the line and the blockage (HomeAdvisor, Fixr, HomeGuide)
Gas tank water heater
$700 to $2,700 installed; about $1,900 on average (HomeAdvisor, Fixr, HomeGuide)
Tankless water heater
$1,600 to $5,600 installed for gas, depending on gas line and venting work (HomeAdvisor, Fixr, HomeGuide)$850 to $3,000 installed for electric, before any panel upgrade ($850 to $1,700) (Fixr, HomeGuide)
Heat pump water heater
$2,000 to $4,600 installed in place of an electric tank; more when it replaces gas (HomeAdvisor, Fixr, HomeGuide)
Sewer camera inspection
$125 to $500 (HomeAdvisor, Fixr, HomeGuide)
Sewer line replacement
about $1,400 to $5,300 for a typical line (HomeAdvisor, HomeGuide)$50 to $250 a linear foot (HomeAdvisor, HomeGuide)
Replacing central AC on existing ducts
$3,900 to $8,000; about $6,000 on average (HomeAdvisor, Fixr, Forbes Home)
Swapping a heat pump on existing ducts
$4,000 to $8,000; a 3-ton system about $3,900 to $6,200 (HomeAdvisor, Forbes Home, HomeGuide)
A whole-home heat pump system
commonly $14,000 or more (NYSERDA, Massachusetts EEAC, Fixr, HomeGuide)
Replacing a gas furnace
$3,800 to $6,200 at standard efficiency (HomeGuide, HomeAdvisor, Fixr, Forbes Home)$5,200 to $12,000 at high efficiency (90% AFUE and up) (HomeGuide, HomeAdvisor, Fixr, Forbes Home)
Replacing an electric furnace
$1,600 to $8,000, with a like-for-like swap at the low end (Fixr, HomeAdvisor)
A single-zone mini-split
$2,000 to $5,000 (HomeGuide, Fixr, Forbes Home)
A multi-zone mini-split
$3,000 to $14,000 for 2 to 4 zones (HomeGuide, Fixr, Forbes Home)
An HVAC tune-up
$70 to $350 a visit; a basic tune-up is often about $100 to $200 (HomeGuide, HomeAdvisor, Fixr)
An HVAC maintenance plan
$120 to $500 a year (HomeGuide, Fixr)

Ranges from HomeAdvisor, HomeGuide, Fixr, Forbes Home, NYSERDA and the Massachusetts EEAC, checked September 2026.

What plumbing and HVAC work costs in Maryland

Rules in Maryland

Maryland licenses master, journeyperson and apprentice plumbers through its State Board of Plumbing.1, 2, 3 Heating and cooling contractors in Maryland are licensed by a separate state board.4 Your local building department in Maryland can tell you whether replacing a water heater, furnace or AC needs a permit.

Plumbing and HVAC rules in Maryland

Nearby counties

Sources

  1. Maryland Department of Labor ā†‘
  2. Maryland Department of Labor ā†‘
  3. Maryland Department of Labor ā†‘
  4. Maryland Department of Labor ā†‘