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Top Heating & Furnace Contractors in DoverNH

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Featured Service Pros

    RE
    Scarborough, ME·

    Areas Of Expertise: Cooling, Heating

    "Pro Was very helpful and helped even after the install. Well qualified and I appreciated the service. Great Job!"

    PHILIP H. in October 2021

    DC

    "Dan replaced windows, drywalled and even helped with other assorted little services related to our kitchen remodel. He was very professional, on time and responsive. He was a great guy who I completely trusted with our projects. I would hire him again without hesitation and recommend him highly."

    MICHELLE B. in January 2023

    Derry Plumbing & Heating Logo
    Derry, NH·

    Areas Of Expertise: All Plumbing and Heating needs, Generators, Water filtration , and 2 more

    "I met with Dave from Londonderry Plumbing & Heating. He showed up when he said he would, did all the work he said he would, finished the job to my satisfaction when he said he would, and gave me a good price for the job. Thank You, Kevin Watts"

    Kevin W. in December 2010

Service Pros

    QC

    "the guys were very nice, got right to work, and fixed the problem"

    Lisa O. in January 2023

    Heritage Home Service Logo
    Auburn, NH·

    Areas Of Expertise: Heating & Cooling Services, Electric, Plumbing , and 1 more

    "My job was fairly complex, which is why I went directly to Heritage - I wanted to retrofit a trailer with a forced hot water heating system (replacing a hot air furnace). It required a finding a boiler from one specific manufacturer, adding the hot water baseboards throughout the trailer, and dealing with installing pipes in an uninsulated crawl space. Tyler, Mike and Dan were professional, courteous, did what they said they were going to do, explained all the new features, left the house spotless. All are very knowledgeable and skilled in their profession. I have never been anything but delighted with the quality of work performed by Heritage employees."

    Linda B. in September 2016

    Smith HVAC Logo
    Gilmanton, NH·

    Areas Of Expertise: Cooling, Sheet Metal, HVAC , and 2 more

    "Andrew set up the heating system in my new build and made himself available for any issues I had once I had moved in. Great work, especially for the price as everything is so expensive with a new build right now!"

    brittany S. in June 2022

    Tereos Plumbing and HVAC, LLC Logo
    Epsom, NH·

    Areas Of Expertise: Plumbing, HVAC

    "Knowledgable, friendly service! Cody is thorough, professional, and will always go the extra mile for his customers. I highly recommend Cody for any plumbing/HVAC needs."

    Patrick C. in March 2022

    AH
    Farmington, NH·

    Areas Of Expertise: Handyman - Multiple Small Projects

    "Denise was prompt in getting the services done and was more than willing to go to the store when another part was needed. We didnâ t have to wait for him to come back another day which was appreciated."

    Kim B. in February 2022

    Toner's Satellite Audio/Video Electronics Logo
    Milton, VT·

    Areas Of Expertise: Home Theater System or Media Center - Install or Repair, Surveillance Cameras - Install or Repair, Home Theater Surround Sound System - Install or Repair , and 2 more

    "Very professional & thorough; one of our best Home Advisor experiences"

    Lynda S. in November 2021

    CM

    "I was very pleased to have done business with Tim. His prompt attention to replacing my furnace in a timely fashion was very much appreciated. I sent in a bid to ServiceMagic and the very next day I received a call from Tim. He came to my home took down all the information the same day. Within less then an hour latter he had a quote for me and said he would have my heating installed the very next day. I was extremely pleased in all aspects and the professionalism of the job. I highly recomend this company for any furnace installation."

    Richard V. in April 2002

    Dunnwell Heating and Cooling Logo
    Exeter, NH·

    Areas Of Expertise: Ductless Mini-split, Water Heating, Gas

    "Mr. Makos was very attentive to our unique needs and preferences for heating and air conditioning, and described very clearly his proposed solution, which has proven to be effective. He was very cordial and considerate throughout the contracting and installation process, moved to acquire the necessary equipment quickly, and installed it promptly and skillfully. He provided his service at exceptional savings, compared to other contractors. He has assured us of further consultation and checks on our system, should the need arise, at no extra charge."

    Peter C. in November 2021

    Next Level Heating and Cooling LLC Logo
    Dover, NH·

    Areas Of Expertise: ac repair, mini split installation, heat pump installation

    "Very good service, communication and pricing. Definitely I would recommend and hire again."

    Janet C. in June 2022

    Murphy's HVAC Logo

    Areas Of Expertise: Electric Hot Water Heater Installs, Heating System, Mini Splits , and 2 more

    "Tim removed and replaced our oil tanks. Hard working, professional, always got back to you in timely manner."

    Abby R. in November 2019

    Heritage Home Service Logo
    Loudon, NH·

    Areas Of Expertise: service, Installs, Replacements

    "We hired Loudon Mechanical to install Daikin mini-splits in our home. The quote was reasonable. Each person in their crew was courteous, prompt, and efficient. They completed our job in two days and left the job site clean. W are extremely pleased with Loudon Mechanical and would highly recommend this company."

    bob P. in November 2018

    EH

    In business since 1996

    Lawrence, MA·

    Areas Of Expertise: A/C & Cooling Systems, Heating & Furnace Systems

    About us: "At Excel HVAC, Inc., we pride ourselves on providing quality service that customers can believe in. Whether it is openings, closings or service, we can take care of all of your heating and air conditioning needs. We look forward to working with you!"

    Paul The Plumber, LLC Logo
    Derry, NH·

    Areas Of Expertise: Install/Repair, Plumbing-Water Heater, Draing Cleaning, Gas piping, HVAC- Heater, Furnace, Boilers, AC, Duct systems

    "Wonderful workmanship. Very nice people."

    marsha W. in November 2021

    Triumph Heating and Cooling Logo
    Hopkinton, NH·

    Areas Of Expertise: HVAC, Central A/C, Furnace Repair , and 2 more

    "Devin answered my distress call to a leaking boiler and Jake came out to fix the problem. It is my first boiler system so poor Jake got a lot of questions. He was FANTASTIC!! So professional and kind. Fixed the problem and answered all of my questions. He did not try to over sell me. I felt very comfortable with Jake's work! I am so pleased with the company all around that I signed up for the Care program and look forward to see them for annual maintenance. Thank you from the bottom of my heart Devin and Jake! William Rivera"

    William R. in December 2022

    LaPlante Electric, Inc. Logo
    Scarborough, ME·

    Areas Of Expertise: HVAC

    "They were very courteous and on time. The workers performed the installation in a single day and did a great cleaning of the house upon completion. I am enjoying the heat as we speak. Peter."

    Peter B. in October 2020

Showing 1-18 of 18 results

Out of Network Heating & Furnace Contractors in Dover, NH

Frequently Asked Questions

What is a furnace?

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A furnace generates and distributes heated air throughout your home. A vital part of the heating, ventilation, and air conditioning (HVAC) system—though it does not cool air—you activate a furnace when you set or adjust the temperature in a room using the thermostat. Furnaces can run off natural gas, oil, electric, or propane.

How long does a furnace last?

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The average gas furnace lasts 15 to 20 years, though some electric furnaces can last 30 years or more.

  • Gas furnace: 15–20 years
  • Electric furnace: 20–30 years
  • Oil furnace: 15–20 years

In addition to furnace type, your unit’s lifespan also depends on its size and the heating system you have—two-stage furnaces are more efficient and less likely to break than single-stage furnaces.

Having a reputable HVAC technician perform annual furnace maintenance and inspections can help ensure you get the most out of your unit. And, as always, change your filters regularly—a dirty filter can block airflow and overwork the motor.

How often should you change your furnace filter?

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You should change your furnace filter every one to three months to help maintain air quality, keep energy costs in check, and extend your unit’s lifespan. If people in your home have dust or pet dander allergies, you may consider changing your filters more regularly. Looking for an even simpler guideline? If the filter is dirty, replace it.

How much does a new furnace cost?

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The average cost of a furnace unit is $2,300 to $7,200, plus $150 to $500 per hour for installation. Furnace replacement prices depend on the type of furnace you need, its size, and local labor costs.

  • Gas: $3,800–$10,000
  • Electric: $2,000–$7,000
  • Oil: $6,750–$10,000
  • Mini-Split: $2,000–$15,000
  • Geothermal: $4,000–$17,000

If your furnace installation requires new gas lines or additional ductwork, add $250 to $800 for the gas lines and $3,00 to $5000 on average for the ductwork to your overall project costs.

Top Heating & Furnace Systems Projects

HomeAdvisor Community Rating

Overall Rating:

Dover Heating & Furnace Contractors are rated 4.8 out of 5 based on 1,135 reviews of 18 pros.

The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.


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Recent Job Requests for Heating & Furnace Contractors in Dover, NH

  • NewProject: Radiant Floor Heat Repair
    Location: Dover, NH
    Date: 02/06/23
    Type of Problem: Radiant water line leak
    Location: Home/Residence
    Is this an emergency?: No
    After Business Hours: No
    Covered by Insurance: No
    Desired Completion Date: Timing is flexible
    Request Stage: Ready to Hire
    Comment: Leak in system, in the basement. We have shut off the system at this point.
  • NewProject: Gas Boiler or Radiator Heat Repair
    Location: Dover, NH
    Date: 02/05/23
    Type of system: Natural gas fired
    Location: Home/Residence
    Is this an emergency?: Yes
    Desired Completion Date: Immediately
    Comment: My boiler makes banging noise and I turned off a few times but still makes banging noise. Now it stopped working.
  • NewProject: Oil Boiler or Radiator Heat Install
    Location: Dover, NH
    Date: 02/03/23
    Type of system: Oil fired
    Location: Home/Residence
    Desired Completion Date: Timing is flexible
    Request Stage: Ready to Hire
    Comment: Replace oil furnace and oil tank
  • Project: Oil Furnace - Repair
    Location: Dover, NH
    Date: 01/31/23
    Current Heating System: Oil fired
    Age of Heating Equipment: 16 - 20 years
    Location: Home/Residence
    Is this an emergency?: No
    Desired Completion Date: 1 - 2 weeks
    Request Stage: Ready to Hire
    Problem with Heating System: Annual/Preventative Maintenance
    Comment: need my furnace cleaned, check out, it's dripping water from one spot.
  • Project: Gas Boiler or Radiator Heat Repair
    Location: Dover, NH
    Date: 01/26/23
    Type of system: Natural gas fired
    Location: Home/Residence
    Is this an emergency?: Yes
    Desired Completion Date: Immediately
    After Business Hours: No
    Historical Work: No
    Covered by Insurance: No
    Problem Description: No heat in one location
    Problem Description: Power failure
    Comment: I have a small gas stove in my media room that won't start. The pilot light is out and I'm not sure how to restart. I believe this is the result of a power failure several days ago in Dover.
  • Project: Gas Furnace - Install
    Location: Dover, NH
    Date: 01/20/23
    Nature of Project: Install new central heating system
    Age of Heating Equipment: Less than 5 years
    Kind of Heating System: Natural gas fired
    Location: Home/Residence
    Desired Completion Date: Within 1 week
    Request Stage: Ready to Hire
    Comment: I need to have the gas line installed for a ventless natural gas fireplace and also, install the fireplace. The utility company already installed the meter.
  • Project: Oil Boiler or Radiator Heat Install
    Location: Dover, NH
    Date: 01/17/23
    Additional thermostats: No
    Type of system: Oil fired
    Location: Home/Residence
    Desired Completion Date: 1 - 2 weeks
    Request Stage: Planning & Budgeting
  • Project: Oil Boiler or Radiator Heat Repair
    Location: Dover, NH
    Date: 01/14/23
    Request Stage: Planning & Budgeting
    Desired Completion Date: Timing is flexible
    After Business Hours: No
    Type of system: Oil fired
    Location: Home/Residence
    Is this an emergency?: No
    Comment: I would like to get an estimate for repairing my boiler
  • Project: Gas Furnace - Install
    Location: Dover, NH
    Date: 01/14/23
    Nature of Project: Install new central heating system
    Age of Heating Equipment: More than 20 years
    Kind of Heating System: Natural gas fired
    Location: Home/Residence
    Desired Completion Date: 1 - 2 weeks
    Request Stage: Planning & Budgeting
    Other Features: Programmable thermostat
    Comment: Need to either replace furnace and oil tank due to age and convert to nature gas line to city hook up or stay with oil and replace oil burner
  • Project: Heat Pump Install
    Location: Dover, NH
    Date: 01/13/23
    Request Stage: Planning & Budgeting
    Desired Completion Date: Timing is flexible
    Location: Home/Residence
    Property Owner: Yes
    Install or Replace: Installing new
    Heating System Type: Gas-fired forced air (central heating)
    Heat pump type wanted: Air source
    Comment: I would liket to get an estimates for Install or Replace a Heat Pump 30-40 yr townhouse with propane FHA; single zone. Looking to supplement and/or replace with heat pump.

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