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10 Best HVAC Companies in Portsmouth, NH

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Written By Bradford Cuthrell

Last Updated April 2024

On average, 55% of energy use in American homes goes toward heating and cooling, according to the Department of Energy. Since such a significant portion of your utility bill goes toward heating and cooling, you'll want to make sure the HVAC system in your Portsmouth home is functioning properly.

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

Top 10 Best HVAC Companies in Portsmouth

East Coast Heating & Air Conditioning Inc.

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

Free quote

Clear pricing policy

Reliable customer support

Informative resources

Services Offered

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

MCP HVAC

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

Informative resources

Clear pricing policy

Free quote

Reliable customer support

Services Offered

Furnace installation
Ac installation
Maintenance
Boiler installation
Indoor air quality

Dr Heat and Mr Cool

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

Reliable customer support

Clear pricing policy

Services Offered

Furnace installation
Indoor air quality
Filtration
Ductless
Radiant heating
Boiler installation
Ventilation

Hydro Air Inc.

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39 Cedar Rd, North Hampton, NH 03862 (603) 964-4097 hydroairinc.com

Clear pricing policy

Informative resources

Reliable customer support

Services Offered

Ductless
Maintenance
Ac installation
Furnace installation
Indoor air quality
Boiler installation

Pro HVAC LLC

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

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Reliable customer support

Clear pricing policy

Services Offered

Boiler installation
Maintenance
Ac installation
Furnace installation
Radiant heating
Ductless
Emergency services

Key Heating & Air Conditioning

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8 Continental Dr, Exeter, NH 03833 (833) 235-8811 keyhvac.com

Free quote

Reliable customer support

Informative resources

Clear pricing policy

Services Offered

Filtration
Maintenance
Ac installation
Indoor air quality
Furnace installation
Ductless

Townsend Energy

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

Clear pricing policy

Informative resources

Reliable customer support

Free quote

Services Offered

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

603 Mechanical

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

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Reliable customer support

Services Offered

Maintenance

North Shore Home Energy LLC

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77 Exeter Rd Unit B, South Hampton, NH 03827 (978) 457-1772 nshec.com

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Reliable customer support

Free quote

Clear pricing policy

Services Offered

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

Coastal Mechanical

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253 Calef Hwy Unit 1, Epping, NH 03042 (603) 693-7195 coastalmechanicalllc.com

Prompt service delivery

Reliable customer support

Free quote

Clear pricing policy

Informative resources

Services Offered

Boiler installation
Ventilation
Duct cleaning
Maintenance
Ac installation
Furnace installation
Indoor air quality
Emergency services
Ac repair
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

A faulty or aging HVAC system probably needs professional attention from a technician who can make repairs or install a new unit. Look out for these common signs that your HVAC needs service:

  • Refrigerant leaks
  • Odd noises when the system turns on
  • Unusually high energy bills
  • Frequent breakdowns and need for repairs
  • Cracking, rust, or corrosion
  • Thermostat malfunctions or temperature control issues
  • Poor air circulation or uneven heating/cooling
  • An HVAC system that's over 15 years old

If you notice any of the above, it's wise to have a local HVAC technician inspect your system. They can diagnose problems and determine whether repair or full HVAC replacement is required.

Cost of HVAC Installation and Maintenance in Portsmouth

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

  • Split or mini-split: Homes without ductwork for central heating and cooling often have split or mini-split HVAC systems. These systems consist of indoor units in each room to control temperature, which all connect to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system operates similar to a normal split system, but has the benefit of being able to utilize energy from either gas or electric sources.
  • Heat pump: Heat pumps transfer warm and cold air between your home and the outdoors. They don't generate their own heat or AC, so they perform best in temperate climates.
  • Packaged heating and air: Packaged HVAC systems are a good choice for smaller houses. They have a single heating and cooling unit, typically in a basement or attic. This unit is often small, energy-efficient, and easy to maintain.

HVAC maintenance prices vary based on the services needed. HVAC systems are complex and may need a number of types of maintenance. Prices for common jobs are as follows:

HVAC Unit TypeCost
Split$2,004-$5,108
Hybrid Split$4,060-$7,480
Heat Pump$3,144-$32,034
Packaged Heating and Air$263-$438

Ways to Save Money on HVAC Costs

It’s important to complete repairs or full-system HVAC replacements as needed, though they can be expensive. The good news is that homeowners have ways to reduce gradual wear and tear and reduce the frequency of breakdowns.

  • Keep your system clean. Keeping your condenser fan blades, ductwork, grills, and indoor evaporator coil clean enables your HVAC system to function effectively and lowers the risk of mold. The National Air Duct Cleaners Association suggests cleaning your home's HVAC when you notice things starting to get dirty.
  • Monitor for potential problems. Keep an eye on your system for issues, for example by consistently checking your thermostat and energy bills. This helps you address issues before they get too expensive.
  • Change the position of your blinds seasonally. Keeping your blinds closed in the summer helps block out passive solar heat. Keeping them open in the winter helps you take advantage of this same heat. Both of these measures help reduce the amount of work your HVAC system needs to do.
  • Change filters regularly. Cleaning or replacing your air filters every 30–90 days helps air flow smoothly through your system. Also try to keep debris away from the external sections of your HVAC system as much as possible.
ServiceCost
Filter Replacement$66-$175
Condensor Cleaning$1,315-$3,946
Thermostat Repair$88-$219
Ductwork Cleaning$421-$1,052

How To Choose a Local HVAC Company

Knowing what to look for in an HVAC company is crucial for a successful project. Look for an experienced, licensed contractor that can give you peace of mind and ensure your system provides reliable heating and air conditioning for your home.

Compare Multiple Bids

Request estimates from three or more HVAC companies. Describe your issues and ask if technicians can inspect your system in person. Review each company's diagnoses, recommended solutions, estimated cost, warranties, and timeline. Avoid companies that pressure you or demand payment before work.

Check Credentials

Look for an HVAC company that employs skilled technicians with the necessary training and licenses. HVAC contractors in all states must obtain a Section 608 Technician Certification from the Environmental Protection Agency (EPA). This certification is mandatory for all technicians who "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." An individual must pass an exam (the type of exam depends on the type of equipment they intend to work with) to be certified by the EPA. All other licensing requirements are handled at the state level.

There are no state-level requirements in New Hampshire specifically for HVAC contractors. However, in certain cases, a contractor may require a Oil Heating Technician or Fuel Gas Fitting license from the Mechanical Safety and Licensing Board. You should also verify whether there are local licensing requirements in your city or municipality. You should also check reviews and complaints on sites like Yelp, Google Reviews, and the Better Business Bureau (BBB). Choose a company with positive reviews and testimonials about great customer experiences.

Understand Work Details

Always make sure you understand the details of a planned project. When HVAC repairs are required, your provider should detail which parts need replacement and why. Confirm that your technician will clean and test your system after repairs are done to ensure that it’s working properly. When replacing your HVAC, have the contractor explain the new model, brand, energy efficiency, estimated installation time, and features. Before signing paperwork, make sure you understand how your provider will determine the right system size for your home and what the price will be.

Compare Warranties

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

Get Quote in Writing

Get written bids before beginning HVAC work. The quote should outline costs for both materials and labor. Read all terms carefully before signing.

Frequently Asked Questions About HVAC in Portsmouth, NH

You should have your HVAC system inspected about twice yearly. After the inspection, your technician will inform you if any services are needed. You should also schedule an inspection if you start noticing issues such as strange noises, leaks, or unusual smells. If your home has ductwork, it should be inspected every few years.

Normally, it's best to have your HVAC system inspected in the spring and fall, as technicians tend to be less busy at these times. This also helps get your system ready for the summer and winter, when it likely sees 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 — only increase or decrease it a few degrees at a time. If you're able to, try switching to a smart thermostat.

Generally, whole-system HVAC installation or replacement takes one to three days. Installing or replacing an air conditioning unit or a furnace takes anywhere from about half a day up to two days. The exact amount of time will vary depending on factors like the size of your home, how easily accessible different areas are, and whether your technician discovers any problems.

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

For a 2,000-square-foot home, you'll also want an air conditioning unit with between 2.5 and 5 tons of capacity. In Portsmouth, a unit with a lower capacity may be sufficient. Usually, if your home is larger than 1,000 square feet, central air will be more effective than window air conditioning units.

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

There are a number of ways you can make your HVAC system more energy-efficient:

  • Keep ductwork clean, and change or clean your air filters on a regular basis.
  • Have regular inspections to take care of issues as they come up.
  • Make sure your doors and windows are well-sealed and keep your attic well-ventilated.
  • Install a smart thermostat. If you aren't able to purchase one, try to keep the temperature indoors as close to the outside temperature as you can.
  • When you need to replace part of your system, see if there are Energy Star-certified or similar environmentally friendly options.

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