Expert Advice On Improving Your Home

10 Best HVAC Companies in Dover, NH

Get matched with a top local pro.
Join over 640 homeowners that have gotten a free quote in the past week.

Written By Bradford Cuthrell

Last Updated February 2024

On average, 55% of energy use in American homes goes toward heating and cooling, according to the U.S. Department of Energy. With the higher cost of living in Dover, you're likely eager to find ways to save on your energy bills.

Our guide to the top HVAC companies in Dover can help you get your system into top shape, allowing you to save money while staying comfortable.

Top 10 Best HVAC Companies in Dover

East Coast Heating & Air Conditioning Inc.

East Coast Heating & Air Conditioning Inc. Logo

Our Rating

User Rating

Write a Review
25 Central Ave, Dover, NH 03820 (603) 430-9414 eastcoasthvac.com

Free quote

Informative resources

Reliable customer support

Clear pricing policy

Services Offered

Maintenance
Ac installation
Ac repair
Furnace repair
Boiler installation
Emergency services
Furnace installation
Indoor air quality
Boiler repair
Inspection
Ductless

Stevens Mechanical

Stevens Mechanical Logo

Our Rating

User Rating

Write a Review
151 Flagg Rd, Rochester, NH 03839 (603) 394-5151 stevensmechanicalnh.com

Free quote

Informative resources

Reliable customer support

Clear pricing policy

Services Offered

Ductless
Furnace repair
Ac repair
Emergency services
Ventilation
Inspection
Furnace installation
Maintenance
Boiler repair

Strogen's Service Experts

Strogen's Service Experts Logo

Our Rating

User Rating

Write a Review
38 Milton Rd, Rochester, NH 03868 (603) 332-6466 strogensserviceexperts.com

Informative resources

Reliable customer support

Free quote

Clear pricing policy

Services Offered

Maintenance
Ac repair
Inspection
Indoor air quality
Ac installation
Ductless
Furnace installation
Furnace repair

Townsend Energy

Townsend Energy Logo

Our Rating

User Rating

Write a Review
35 Centre Rd, Somersworth, NH 03878 (603) 692-3022 townsendtotalenergy.com

Informative resources

Clear pricing policy

Free quote

Reliable customer support

Services Offered

Ductless
Ac repair
Furnace repair
Maintenance

Pro HVAC LLC

Pro HVAC LLC Logo

Our Rating

User Rating

Write a Review
32 Crosby Rd, Dover, NH 03820 (603) 743-4822 prohvac1.com

Informative resources

Clear pricing policy

Reliable customer support

Services Offered

Boiler installation
Ac installation
Ductless
Maintenance

Ultra Geothermal

Ultra Geothermal Logo

Our Rating

User Rating

Write a Review
130 Old Concord Turnpike, Barrington, NH 03825 (603) 868-7878 ultrageothermal.com

Free quote

Informative resources

Clear pricing policy

Reliable customer support

Services Offered

Ducting
Maintenance
Geothermal heating
Indoor air quality

Dr Heat and Mr Cool

Dr Heat and Mr Cool Logo

Our Rating

User Rating

Write a Review
59 Chases Pond Rd, York, ME 03909 (207) 451-8008 heatdr.com

Reliable customer support

Clear pricing policy

Services Offered

Ductless
Smart home integration
Filtration
Ventilation
Radiant heating
Indoor air quality

High Degree Heating

High Degree Heating Logo

Our Rating

User Rating

Write a Review
45 Allen St Unit 9, Rochester, NH 03867 (603) 330-3233 highdegreeheating.com

Clear pricing policy

Reliable customer support

Services Offered

Maintenance
Ductless

603 Mechanical

603 Mechanical Logo

Our Rating

User Rating

Write a Review
118 Maplewood Ave, Portsmouth, NH 03801 (833) 603-4822 603mechanical.com

Clear pricing policy

Reliable customer support

Services Offered

Maintenance

MCP HVAC

MCP HVAC Logo

Our Rating

User Rating

Write a Review
3601 Lafayette Rd, Portsmouth, NH 03801 (603) 501-9454 mcphvac.com

Clear pricing policy

Informative resources

Free quote

Reliable customer support

Services Offered

Maintenance
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on hvac companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

Signs You May Need HVAC Repair or Replacement

If your home's HVAC system isn't working correctly or nearing the end of its lifespan, you might need an HVAC contractor for maintenance or replacement. Look for these common indicators that your system requires expert attention:

  • Strange noises when turning on
  • Temperature control issues or thermostat malfunctions
  • Poor air circulation or uneven heating/cooling
  • Corrosion, rust, or cracking
  • Higher than normal energy bills
  • Refrigerant leaks
  • Frequent breakdowns and need for repairs
  • An HVAC system that's over 15 years old

If you notice any of these HVAC red flags, your system evaluated. A local technician can complete an inspection, diagnose problems, and recommend repairing or replacing your HVAC unit.

Cost of HVAC Installation and Maintenance in Dover

The price of HVAC installation or maintenance varies depending on the type of unit you have. Common kinds of HVAC units include the following:

  • Split or mini-split: If your home's ductwork can't accommodate a central HVAC system, you likely have a split or mini-split system. Split systems have internal units in each room to control temperature; these indoor units all connect to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system performs similarly to a standard split system, but has the capacity to draw on either electricity or gas as energy sources.
  • Heat pump: Heat pumps transfer warm and cold air between your home and outside. They don't generate their own heat or AC, so they perform best in moderate climates.
  • Packaged heating and air: Packaged HVAC systems work well in smaller houses. They consist of a single combined air conditioner and heating unit, usually located in a basement or attic. This unit is typically small, cost-effective, and straightforward to maintain.

HVAC maintenance costs differ depending on the particular service needed. HVAC systems are complicated and can require different maintenance services. Fees for common services are as follows:

HVAC Unit Type Cost
Split $2,069-$5,275
Hybrid Split $4,193-$7,724
Heat Pump $3,246-$33,079
Packaged Heating and Air $272-$453

Ways to Save Money on HVAC Costs

It's important to take care of HVAC repairs and replacements in a timely manner, but it can also be expensive. Luckily, there are some steps you can take to slow the wear and tear on your system.

  • Change the position of your blinds seasonally. During winter, leave your blinds open so your home benefits from passive solar heat. In summer, keep blinds shut to block out heat. Doing both lowers the amount of work your HVAC system is required to do.
  • Monitor for potential problems. Keeping an eye out for problems, for instance by consistently checking your thermostat and energy bills, lets you resolve them before they get out of hand.
  • Change filters regularly. Switching out your air filters or washing them every 30–90 days allows smooth air circulation through your system. You should also try to keep debris from accumulating on the outdoor sections of your HVAC.
  • Keep your system clean. Regularly cleaning indoor evaporator coil, grills, ductwork, and condenser fan blades helps keep your HVAC system running efficiently and lowers your risk of mold. The National Air Duct Cleaners Association advises cleaning your HVAC system when it starts to look dirty.

Service Cost
Filter Replacement $68-$181
Condensor Cleaning $1,358-$4,075
Thermostat Repair $91-$226
Ductwork Cleaning $435-$1,087

How To Choose a Local HVAC Company

Finding the right HVAC company is key for an easy installation or repair. An experienced, credentialed HVAC contractor gives you confidence your system can provide reliable heating and air conditioning year-round.

Compare Multiple Bids

Contact at least three HVAC providers for quotes. Describe the issues and have specialists visit to inspect your system if possible. Compare the contractors' explanations, solutions, estimated costs, timeframes, and warranties. Avoid providers that pressure you or demand payment upfront.

Check Credentials

Choose an HVAC company with skilled technicians who have proper licensing and experience. HVAC contractors in all states have federal requirements set by the Environmental Protection Agency (EPA). To obtain the EPA Section 608 Technician Certification, a contractor must pass an exam (the specific exam depends on what kind of equipment they plan to work with). Section 608 certification is required for all technicians who "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." All other licensing requirements are handled at the state level.

There are no state-level requirements in New Hampshire specifically for HVAC contractors. However, some contractors may require a Fuel Gas Fitting or Oil Heating Technician license from the Mechanical Safety and Licensing Board. You should also verify whether your city or municipality has any local licensing requirements. Always check a provider's reviews and complaints with organizations such as Google Reviews, Yelp, and the Better Business Bureau (BBB). You want to hire a provider with positive reviews and a history of good customer service.

Understand Work Details

Always make sure you understand what a company’s process is like. When HVAC repairs are needed, ask your provider to explain which parts need replacement and explain why. Confirm that your technician will clean and test your system afterward to ensure proper operation. For replacement, ask the contractor to explain the new HVAC system estimated installation time, model, brand, features, and energy efficiency. Before starting the project, you should understand the process your provider will use to properly size the system for your home and the price you'll pay.

Compare Warranties

Trustworthy HVAC companies provide warranties for their services. Broader coverage is better, so make sure to compare warranties between companies. Choose the one that provides the most comprehensive coverage at a fair cost.

Get Quote in Writing

Always get estimates for HVAC service in writing before work begins. A comprehensive quote should cover both materials and labor. Make sure you understand all terms before signing a contract.

Frequently Asked Questions About HVAC in Dover, NH

Typically, your HVAC system should be inspected twice a year. After that inspection, your HVAC technician will tell you what, if any, services are needed. You should also have your system inspected and serviced if you start to notice any issues, such as leaks, strange noises, or unusual smells. If you have ductwork in your home, it should be serviced every few years.

The best times of the year to have your HVAC system inspected are the spring and fall. Technicians are less busy during these times, making it easier to get an appointment. This also helps get your system ready for the summer and winter, when it typically gets the most use.

You can save energy during the winter by reducing the amount of work your HVAC system needs to do to heat your home. Keep your thermostat as low as is comfortable and avoid making drastic temperature changes — increase or decrease it a few degrees at a time. If you can, try switching to a smart thermostat.

Generally, HVAC installation or replacement takes between one and three days for the entire system. Installing or replacing an air conditioning unit or a furnace may take anywhere from a few hours up to two days. The exact amount of time will be based on factors like the size of your home, how easily accessible different areas are, and whether your technician runs into any problems.

For a 2,000-square-foot home, you should look for around 2.5 to 5 tons of air conditioning capacity. In Dover, you can probably make do with a unit that's on the lower end of this range. If your home is larger than 1,000 square feet, central air will usually be more effective for cooling than window units.

For a 2,000-square-foot home, you should also look for a furnace that is between 50,000 and 80,000 BTUs (British thermal units).

Your HVAC company may provide financing options through a third-party lender, or you may be able to obtain your own loan. It's smart to discuss payment options with a financial advisor and your HVAC company to make sure that you find the best option for you.

There are several ways you can make your HVAC system more energy-efficient:

  • Make sure your air ducts remain clean, and clean or change your air filters on a regular basis.
  • Schedule regular inspections to take care of problems as they come up.
  • Keep your attic well-ventilated and make sure all doors and windows are well-sealed.
  • Install a smart thermostat. If you don't want to or can't buy one, try keeping the temperature indoors as close to the outside temperature as is comfortable.
  • When replacing part of your HVAC system, explore Energy Star-certified or similar environmentally friendly options.

Other Dover, NH Home Services