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As New Hampshire residents, we’re lucky enough to experience all four distinct seasons – ranging from bitterly cold winters to hot and humid summers. While we can usually get by with opening the windows during the shoulder months, having an efficient HVAC system is critical to maintaining health and comfort all year round. Luckily, the heating and cooling experts at Heritage can make sure you and your family are comfortable indoors, no matter what mother nature has in store.

Our trusted team of cooling specialists are trained to work on almost all residential AC systems and are backed by a wealth of experience from our 35+ years in the industry. Whether it’s unexpected AC repairs or routine air conditioner maintenance, Heritage has technicians available to help in your area.

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FAQs

  • New Hampshire Air Conditioning Maintenance

    • Air conditioning systems break down for a number of reasons, but common issues include:
      • Rodent damage to the wiring of the outdoor condenser
      • Extremely clogged filtration systems
      • Damage to outdoor condenser due to falling ice
      • Debris buildup in outdoor coil fins (often caused by lawnmowers or leaf blowers)
      • Failed capacitor
      • Failed fan motor

    Not sure if your cooling system needs repairs? Some common signs are not enough cool air coming into the home, the outdoor condenser making strange noises, or your system is running constantly but not producing any cool air. Regardless of your exact issue, Heritage is available to help. We’ll diagnose the problem and provide suggested repairs so you have the tools to make the decision right for you and your home.

  • New Hampshire Air Conditioning Installation

    Some common signs are not enough cool air coming into the home, the outdoor condenser making strange noises, or your system is running constantly but not producing any cool air. Regardless of your exact issue, Heritage is available to help. We’ll diagnose the problem and provide suggested repairs so you have the tools to make the decision right for you and your home.

  • Tips for Lowering Your Cooling Costs

    Some common signs are not enough cool air coming into the home, the outdoor condenser making strange noises, or your system is running constantly but not producing any cool air. Regardless of your exact issue, Heritage is available to help. We’ll diagnose the problem and provide suggested repairs so you have the tools to make the decision right for you and your home.

Mitsubishi Air Conditioners

Don’t have existing ductwork? Ductless air conditioning may be a good option for you! As a Mitsubishi ductless Diamond Dealer, Heritage can expertly design a system unique to your home and needs and can provide you with a number of solutions to bring cooling where you want it. As a bonus, every Mitsubishi ductless unit also functions as a heat pump (essentially an AC system in reverse) during the colder months, and if you upgrade to a Hyper Heat unit, you can heat your home all year round, even down to -13°F.

Ask How Heritage Can Help with Your Air Conditioning Needs

Our technicians bring unparalleled respect and expertise to each and every one of our customer’s homes, so you can trust in us to get the job done right the first time. Whether you need repair, maintenance, or a free estimate on a new installation, our team is here to help. Give us a call, and ask one of our friendly representatives to schedule your next appointment today.

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Financing Made Easy

When you choose Heritage, you can rest easy knowing that we provide straightforward options to help you budget for a complete solution that will last you for decades to come.

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Home Advantage Membership

With Home Advantage Membership, enjoy peace of mind knowing your home’s plumbing, heating, cooling, and electrical needs are handled year after year—hassle-free, with added benefits.

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FREE

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What Our Customers Are Saying

Lafayette went over and above expectations to provide us quality service and to give us the right information to get things done greatly appreciate everything that was done today

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Dennis Larck

Dennis Larck

July 2, 2026

Noah Mishkit was very helpful & informative. He made sure to double check that everything is in working order & I now know how to properly maintain my water filtration system. Thank you

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Courtney O'Haire

Courtney O'Haire

July 2, 2026

Polite, professional Lafayette Kimball was able to find the propane leak in my tanks since I’m still under warranty. He explained everything he was doing with his testing equipment. Kudos young man.

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Normajean Smith

Normajean Smith

July 2, 2026

We had a total of 4 systems have maintenance done to them- two HVAC systems and two central air systems. It was a big project and our technician spent about 6+ hours making sure it was done throughly and correctly. He walked me through and explained everything. Showed me things I needed to know and made sure I understood it all. Took pictures of everything and made sure to fill out all documents with the upmost detail. Very friendly and professional. His name was Angel. He did amazing and I had a wonderful experience. Highly recommend. Thank you!!!

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Jessica W

Jessica W

July 1, 2026

We required having a plumbing issue be repaired. We were given an appointment very quickly Our technician, Ryan, gave us excellent service, he arrived when expected, thoroughly explained what was needed and quickly made the repair. Ryan also made some further suggestions for preventative maintenance on our water system, which we will take under consideration. Overall, our 1st experience with Heritage Home Services shas been very positive

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Linda Luedke

Linda Luedke

July 1, 2026

Michael Callahan was knowledgeable, friendly, and professional. He took the time to show me everything he was seeing and explained everything thoroughly. I would recommend Heritage and specifically Michael to anyone.

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Lucie

Lucie

June 30, 2026

Kyle came by and checked out our AC units l, did a great job very professional and knowledgeable. He even looked at my boiler set up to see about replacing it and messaged a project manager to see about coming out the same day to do a quote. Will be using these folks from now on!

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Nick Robison

Nick Robison

June 30, 2026

Bryce is great, we’ve had him at the house 3 times for different things and we can always depend on him being thoughtful in all he does, he’s very skilled and also has a great attitude and will try different things until he gives us what we’re looking for.

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Mihaela Dumea

Mihaela Dumea

June 28, 2026

DJ assisted during the visit and explained how the system worked prior troubleshooting. Found a solution to the problem really quick and now my heater works perfectly.

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Carlos Santiago

Carlos Santiago

June 26, 2026

This was our first time using Heritage and it was a great experience. We got an appointment promptly and Bryce and his apprentice arrived right on time. Bryce was a true professional throughout the process. He was troubleshooting a complex whole-house electrical issue for us: he approached it logically, fixed a number of things along the way, kept us updated throughout, explained the issues and our options clearly, and ultimately solved the problem. We will definitely use Heritage again.

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Steven Knight

Steven Knight

June 26, 2026

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Whether you need routine maintenance, repair, or new installation – we have you covered. 

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Frequently Asked Questions

  • How often should my air conditioner be serviced in New Hampshire?

    Your air conditioning system should be professionally serviced at least once per year, ideally in the spring before the warm weather arrives. Annual air conditioning maintenance ensures your system is clean, properly charged with refrigerant, and ready to perform efficiently throughout the New Hampshire summer. Spring is the ideal time because it allows technicians to catch any issues before you actually need your AC on a hot day.

    New Hampshire’s climate presents unique challenges for air conditioning systems. After sitting idle through a long, cold winter, outdoor condensers can accumulate debris, experience rodent damage to wiring, or suffer from ice damage. A professional maintenance visit will address all of these concerns, clean the coils and filters, check electrical connections, and verify that the system is producing adequate cooling output.

    Regular maintenance not only prevents unexpected breakdowns during the hottest days of summer but also keeps your system running at peak efficiency, which translates to lower energy bills. Most manufacturers also require annual professional maintenance to keep your warranty valid. Heritage Home Service provides thorough AC maintenance with a complete report so you know exactly how your system is performing.

  • What size air conditioning system does my New Hampshire home need?

    Choosing the right size air conditioning system is critical for both comfort and efficiency. A system that is too small will struggle to cool your home on the hottest days, running constantly and driving up energy bills without ever reaching your desired temperature. A system that is too large will cycle on and off too frequently, failing to properly dehumidify your home and causing uneven temperatures.

    The correct AC size for your New Hampshire home depends on several factors, including the total square footage, the number of windows and their orientation, the level of insulation in your walls and attic, ceiling heights, and the number of occupants. New Hampshire’s climate, which includes both hot, humid summers and cold winters, also plays a role in equipment selection. A professional load calculation is the only accurate way to determine the right system size for your specific home.

    Heritage Home Service provides free, comprehensive estimates for air conditioner installation that include a thorough assessment of your home’s cooling needs. Our experienced team will perform proper sizing calculations and recommend the right equipment to keep your home comfortable and energy-efficient all summer long. We also offer ductless mini-split systems as an option for homes without existing ductwork or for supplemental cooling in specific areas.

  • Does Heritage install and repair ductless mini-split systems?

    Yes, Heritage Home Service is a Mitsubishi Diamond Dealer, which means we are among the most highly trained and qualified installers of ductless mini-split systems in New Hampshire. We provide both ductless mini-split installation and ductless mini-split repair services for residential customers throughout the state.

    Ductless mini-split systems are an excellent cooling solution for New Hampshire homes that lack existing ductwork, have additions or converted spaces that are difficult to reach with central air, or simply need supplemental cooling in specific rooms. These systems are highly energy-efficient because they deliver cooled air directly to individual zones, eliminating the energy losses associated with ductwork. As an added benefit, every Mitsubishi ductless unit also functions as a heat pump, providing efficient heating during the colder months.

    Whether you are considering a new ductless installation or need repairs on an existing system, Heritage has the expertise to help. Our team will evaluate your home and design a custom solution that fits your specific needs and budget. Contact us for a free estimate on ductless mini-split installation or to schedule a repair appointment.

  • What are the benefits of upgrading to a high-efficiency air conditioner?

    Upgrading to a high-efficiency air conditioner offers several significant benefits for New Hampshire homeowners. The most immediate advantage is lower energy bills. Modern high-efficiency AC systems use significantly less electricity to produce the same amount of cooling compared to older units. If your current air conditioner is 10 to 15 years old, a new high-efficiency system could reduce your cooling costs by 20 to 40 percent.

    Beyond energy savings, high-efficiency air conditioners provide better comfort. They often feature variable-speed compressors and fans that run more quietly and maintain more consistent temperatures throughout your home. These systems also do a better job of removing humidity, which is particularly important during New Hampshire’s muggy summer months. Improved dehumidification means your home feels more comfortable even at slightly higher thermostat settings.

    Heritage Home Service can help you evaluate the potential savings and comfort improvements of upgrading your air conditioning system. We offer free estimates for air conditioner installation and will help you choose the right high-efficiency system for your home. We also carry ductless mini-split systems from Mitsubishi, which are among the most energy-efficient cooling options available today.

  • How can I tell if my air conditioner needs to be replaced?

    There are several signs that your air conditioner may need to be replaced rather than repaired. Age is a major factor: most central air conditioning systems last between 10 and 15 years. If your unit is approaching or exceeding that range, it is worth considering replacement, especially if you are experiencing frequent issues. Other warning signs include rising energy bills, frequent repair calls, reduced cooling capacity, excessive noise, and the use of R-22 refrigerant, which has been phased out and is increasingly expensive.

    If your air conditioner requires a major repair that costs more than half the price of a new system, replacement is usually the more economical choice in the long run. Similarly, if you have needed multiple repairs within the past two to three years, the cumulative cost of keeping an aging system running often exceeds the investment in a new, reliable unit with a fresh warranty.

    Heritage Home Service offers free estimates for air conditioner replacement. Our team will honestly assess whether your current system can be repaired cost-effectively or whether a new installation is the better investment. We will walk you through your options, handle all permits and inspections, and ensure your new system is properly sized and installed for optimal performance in your New Hampshire home.

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