Plumbers and heating and cooling contractors in New Hampshire
119 plumbers and heating and cooling contractors are listed in New Hampshire. 78 hold an active USDOT registration. The 2 counties listed below have at least 15 each and account for 74 of them.
New Hampshire licenses master and journeyman plumbers through its Mechanical Safety and Licensing Board.1, 2, 3 Fuel gas fitters in New Hampshire are licensed by the same board, and oil heating technician certification is voluntary.4 Your local building department in New Hampshire can tell you whether replacing a water heater, furnace or AC needs a permit.
Counties
| County | Contractors |
|---|---|
| Rockingham County | 50 |
| Hillsborough County | 24 |
Other counties in New Hampshire
45 contractors in 8 counties with fewer than 15 listings.
Belknap County 1 contractor
Carroll County 2 contractors
Cheshire County 5 contractors
Decatur Heating Services, Gary Jackson Heating Services, Plumbob Inc, S3 Heating LLC, Sean Ogren Plumbing & Heating LLC
Coos County 4 contractors
Al's Heating & Fuels LLC, Als Heating & Fuels Services, Pratti Mechanical Inc, Roger Villeneuve's Heating Oil
Grafton County 8 contractors
Anytime Drain Cleaning, Boutin Plumbing & Heating LLC, Cardigan Mechanical, Dale P Hammond Heating, J&M Plumbing & Heating Inc, Johnson Plumbing, Martins Mechanical Plumbing & Heating LLC, Partridge Family Heating LLC
Merrimack County 11 contractors
Al Terry Plumbing & Heating, DiTroia Heating & Cooling, First Check Hvac Solutions, Granite State Refrigeration Services LLC, High Line Mechanical Inc, McClure Plumbing & Heating, New England Mechanical Overlay Inc, Recycling Mechanical of New England LLC, Ryan Hamel Plumbing and Heating, Sam Mechanical Services LLC, Windham Mechanical LLC
Strafford County 10 contractors
Angelo Sassi & Son Plumbing & Heating Inc, Bruce P Hermenau Plumbing & Heating LLC, First Class Heating LLC, High Degree Heating, Hydroairincorpated, Janco Mechanical, Kimballs Mechanical LLC, Local Pride Heating Oil, Maguire Brothers Plumbing and Heating Ac-Llc, RTH Mechanical Contractors
Sullivan County 4 contractors
AEC Heating & A/C LLC, Lucas Mechanical LLC, New Hampshire Industries, The Parker Group
Plumbing and HVAC rules in New Hampshire
- Heating and cooling license
New Hampshire's Mechanical Safety and Licensing Board licenses fuel gas fitters, and certification for oil heating technicians is voluntary. For air conditioning work, ask the contractor which licenses they hold.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 New Hampshire
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.