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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.

JUST CALL HERITAGE (603) 354-0092

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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Repairs over $200

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What Our Customers Are Saying

Isles came promptly on an emergency night call and did a very professional job and was very personable and knowledgeable.

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Ann Federici

Ann Federici

July 21, 2026

When my AC quit suddenly, Heritage came in a timely fashion and did an excellent job. The four gentlemen who helped me were professional and knowledgeable. Joe diagnosed the problem and was very thorough in explaining the cost of repair versus replacement. Bobby, Harrison and the electrician Liam did the replacement and were wonderful to work with. They explained the process carefully, answered all my questions and completed the job efficiently and quickly. I would certainly call the company again for any HVAC, plumbing or electrical needs. Thanks Heritage!

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Sarah Mason

Sarah Mason

July 20, 2026

I had an emergency with my septic and had no running water. Their technician Derek, arrived early and explained every step of his process and what everything cost, before performing the work.

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Dennis Kane

Dennis Kane

July 20, 2026

First time using Heritage, as two other plumbers I’ve used in the past gave me long lead times. Heritage answered my call personally, and scheduled me same day-amazing considering it was a Saturday! I had a leaking outdoor spigot, and given the drought, waiting a week to fix it was out of the question. The technician sent out, James Shallow, could not have been more professional, knowledgeable and personable. He showed up on time, did the job seamlessly and without issue. He spent time educating us as to how to avoid this problem in the future, and it was a genuinely pleasant experience. I will most definitely use & recommend Heritage again (request Jimmy).

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denice brandon

denice brandon

July 17, 2026

Alex came to fix a water main leak at my home which was pre-manufactured in the late eighties. He found and fixed the leak quickly. After the job was complete I spoke with him about the cause because this is the third time in a year with a leak. He spent the time with me explaining the material used for piping in my place and checked the water pressure. The pressure was on the high end and we both concluded between pressure spikes and old plastic pipes. I asked for an estimate to replace all the pipes. He was able to give me an estimate on the spot and found financing with very reasonable terms. Two days later Heritage Home Services was here with two trucks and completely changed out the piping in a day. In short. This place answers the phone. Gets technician on the job quickly. Great knowledge. Cleaned thoroughly before leaving.

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Greg Cumming

Greg Cumming

July 17, 2026

Derek Schmidt did a great job servicing my Bradford White water heater! Very knowledgeable and took the time to explain everything to me and all my options moving forward. He was respectful of my home and family, would welcome him back anytime.

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Ryan Willett

Ryan Willett

July 16, 2026

The team came after hours and quickly deduced the issue and got the AC back on line! Very nice people and did thorough work!

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bouche64

bouche64

July 15, 2026

We called several plumbers and I got “we are too busy” and “it’s too small of a job”. Not with heritage though! They were able to get us on the schedule in a timely manner and helped us with our plumbing issue. Thank you Zach! Zach was quick and professional! Will definitely use again!

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Andrea Thomas

Andrea Thomas

July 15, 2026

I’ve dealt with Heritage for many years because of their dependability. They are not the cheapest, for sure, but if you need a plumbing or HVAC system installed or serviced/repaired, there’s none better. I needed repairs to be done on slim duct covers that were damaged after having siding installed on my home. I called Heritage because they were the company that installed the original mini-split system in my house several years earlier. John Lindonen and another technician (unfortunately, I don’t remember his name) showed up as committed and did the repair work. They were very thorough, explaining every issue to me and answered all of my questions. They were polite, and extremely knowledgeable. I wouldn’t hesitate to recommend these guys to my family or friends.

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Richard Dauber

Richard Dauber

July 15, 2026

The AI interactive was ok but screwed up my ph# so never got a call. However, Camile arrived and spent time discussing my points and activities performed, helped me tremendously and ultimately didn’t need service. He was professional, informative, and transparent so Heritage, please acknowledge his great service!

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D L

D L

July 15, 2026

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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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