Plumbers and heating and cooling contractors in Maryland
987 plumbers and heating and cooling contractors are listed in Maryland. 537 hold an active USDOT registration. The 16 counties listed below have at least 15 each and account for 945 of them.
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.
Counties
Other counties in Maryland
42 contractors in 8 counties with fewer than 15 listings.
Allegany County 1 contractor
Caroline County 7 contractors
Bishop's Backhoe & Plumbing Inc, Chesapeake Cooling Solutions LLC, DRS Plumbing LLC, Ewing Plumbing & Heating LLC, H B Everett Plumbing & Heating Co Inc, J Darling, Service Today Heating, Air Conditioning, Plumbing and Electrical
Dorchester County 7 contractors
Alpha 1st George F Doty Plumbing, Atlas Electric Service Heating & Cooling Inc, David J McMullen Plumbing, Mid-Shore Plumbing LLC, Pliescott Hvac Services LLC, Reliably Accurate Hvac LLC, Turner Mechanical Services
Garrett County 1 contractor
Kent County 5 contractors
Legacy Mechanical Group Inc, Montgomery Heating and Cooling LLC, PPM Mechanical LLC, Starkey Mechanical Inc, United Mechanical
Somerset County 1 contractor
Talbot County 8 contractors
Hvac Electrical Plumbing Generators, Mike & Sons Mechanical Services LLC, Morris Refrigeration & Hvac LLC, Pearson Heating Systems, RLT Plumbing, Right Choice Plumbing & Rooter, LLC, The Hvac Service Group, Velocity Hvac
Worcester County 12 contractors
Arctic Heating and Air Conditioning, Benjamin Franklin Plumbing of Delmarva, CW Mechanical LLC, Hickman Plumbing Heating & AC, Jackson Mechanical Inc, MGD Plumbing | Ocean City Plumber, One Hour Heating & Air Conditioning® of Delmarva, Poseidon Plumbing & Home Services, Seaside Plumbing Inc, Selby Family Plumbing, The Crabby Plumber LLC, Toms Refrigeration Plumbing Heating & Cooling
Plumbing and HVAC rules in Maryland
- Heating and cooling license
State license.4
- Replacement permits
Ask your local building department whether replacing a water heater, furnace or AC needs a permit where you live.
What plumbing and HVAC work costs in Maryland
These are published national ranges, not quotes. Local quotes vary.
- 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)
Ranges from HomeAdvisor, HomeGuide, Fixr, Forbes Home, NYSERDA and the Massachusetts EEAC, checked September 2026.