Air Conditioning &
Mini Split Installation
A.J. LeBlanc Heating cools homes across Southern New Hampshire with central air conditioning, ductless mini splits, and cold-climate heat pumps. We help you choose the system that fits your home, whether it has ductwork or not, install it cleanly, and handle your NHSaves rebates.
Central A/C, Mini Splits & Heat Pumps
in Southern New Hampshire
From whole-home central air to room-by-room mini splits and energy-efficient heat pumps, A.J. LeBlanc Heating has installed thousands of cooling systems for Southern NH homeowners. Family-owned since 1928, we match the system to how your home is built and how you want to cool it, and back every installation with our workmanship guarantee.
Ductless Mini Splits
A.J. LeBlanc Heating has installed thousands of ductless systems. We install single-zone and multi-zone systems from the industry's leading manufacturers. Mini splits are a proven choice for boiler homes with no existing ductwork.
Mini Split ServicesCentral Air Conditioning
We install whole-home central A/C properly sized for hot, humid New England summers. A.J. LeBlanc Heating installs, replaces, and services most major brands, with annual maintenance available to extend system life.
Central A/C ServicesHeat Pumps
A heat pump is one system for both heating and cooling. Cold-climate models work down to -13°F. NHSaves rebates are available based on system size and type. We apply the NE Heat Pump Accelerator discount at purchase and help you file the rest.
Heat Pump Services
Ductless Mini Split Installation in Southern NH
A.J. LeBlanc Heating has installed thousands of ductless systems. Mini splits are ideal for homes with oil boilers and no ductwork, because they add both heating and cooling without major renovations. A cold-climate heat pump is far more efficient than an oil system, so the more you run it for heat, the less oil you use. How much you save depends on your home, how the system is run, and current oil and electricity prices, which is why we give you a free written estimate with the real numbers before you decide.
- Single-Zone & Multi-Zone Systems
- Wall, Floor Console & Ceiling Cassette Options
- Cold-Climate Models Rated to -13°F
- Concealed Ducted Mini Split Systems
- Annual Mini Split Service & Tune-Up
- Mini Split Repair for All Brands

Cold-Climate Heat Pumps Built for NH Winters
Modern cold-climate heat pumps operate down to -13°F. They can serve as a standalone heating and cooling system, or pair with your existing furnace or boiler as a hybrid setup. NHSaves rebates are available based on system size and type. We apply the NE Heat Pump Accelerator discount at purchase and help you file the rest.
- Air-Source Heat Pump Installation
- Cold-Climate Models Rated to -13°F
- Ducted & Ductless Configurations
- Hybrid Heat Pump + Furnace or Boiler
- NHSaves Rebates available based on system size and type

Central Air Conditioning Installation & Service
For homes with existing ductwork, central air provides whole-home cooling from a single outdoor unit. We size the system to your home, install cleanly with all permits pulled, and offer annual tune-ups to keep it running at peak efficiency. Free written estimates with everything included upfront.
- Central A/C Installation & Replacement
- Sized to your home for even cooling
- Annual A/C Tune-Up & Maintenance
- A/C Repair & Emergency Service
- Ecobee & Smart Thermostat Installation
- Indoor Air Quality Upgrades
How Installation Works
Free In-Home Assessment
We assess your home and existing setup, then design a system sized for your home, not a generic estimate over the phone.
Written Estimate & Rebate Review
Our written quote covers equipment, all labor, electrical work, permits, and our workmanship warranty. We also identify every NHSaves rebate you qualify for before you decide.
Clean Install & Rebate Filing
Most installs are completed in one to two days. We test the system, walk you through it, apply the Accelerator discount at purchase, and help with the NHSaves paperwork.
A/C, Mini Split & Heat Pump Installations
Rebates That Make Heat Pumps Affordable
Southern NH homeowners can stack NHSaves utility rebates with the New England Heat Pump Accelerator on qualifying cold-climate systems. A.J. LeBlanc Heating applies the NE Heat Pump Accelerator discount right at purchase and helps you file your NHSaves rebates, so you capture every incentive you qualify for.
- NHSaves rebates based on system size and type for qualifying heat pumps
- Eversource, Unitil & Liberty utility rebates
- Accelerator discount applied at purchase; NHSaves rebates filed with you
A/C & Heat Pump Brands We Install & Service
Amana
Heating and cooling systems that last and last. Amana units come with some of the strongest limited lifetime warranties in the industry.
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Goodman
Made-in-USA furnaces and HVAC systems offering solid reliability at an accessible price point. A popular choice for furnace replacement across Southern NH.
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Carrier
The brand built by the inventor of modern air conditioning. Carrier furnaces, air conditioners, heat pumps, and ductless mini splits are recognized for engineering quality and long service life.
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American Standard
Dependable furnaces, heat pumps, and air conditioners known for quiet operation and lasting performance. A trusted brand for long-term comfort.
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Trane
High-performance HVAC systems built to handle extreme conditions. Trane furnaces, heat pumps, and air conditioners deliver consistent comfort and long-term reliability.
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Lennox
A longtime Lennox dealer offering their full lineup of furnaces, air conditioners, and heat pumps.
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Rheem
Complete heating, cooling, and water heating under one brand. Rheem furnaces, air conditioners, heat pumps, and water heaters all from a single trusted source.
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York
Energy-efficient air conditioners, heat pumps, furnaces, and air handlers from York, now backed by Bosch Home Comfort.
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Maytag
Dependable, energy-efficient heat pumps, air conditioners, and furnaces backed by a 12-year limited warranty. A trusted name in home comfort.
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BoschPlatinum Dealer
Bosch IDS systems are among the quietest on the market and engineered specifically for cold climates. A strong performer at a competitive price point. As a Bosch Platinum Dealer we provide factory-trained installation and extended warranty coverage.
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DaikinComfort Pro
The world's number one air conditioning company. Daikin's cold-climate lineup includes wall-mounted, floor-mounted, and ducted systems with excellent multi-zone options. As a Daikin Comfort Pro dealer we provide factory-trained installation and extended warranty coverage.
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MitsubishiDiamond Dealer
The Hyper-Heat line keeps heating reliably in temperatures down to -13°F. As a Diamond Dealer we provide factory-trained installation and extended warranty coverage.
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LGPro Dealer Platinum
LG's Art Cool and LGRED heat pump series offer cold-climate performance with slim, low-profile indoor units. A strong choice for efficiency and clean aesthetics. As an LG Pro Dealer Platinum we provide factory-trained installation and extended warranty coverage.
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Fujitsu
Fujitsu's Halcyon series is a reliable, proven option with strong cold-climate ratings. Popular for additions and single-zone applications throughout our service area.
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Custom Comfort
Value-focused mini splits and heat pumps that blend performance, comfort, and affordability, installed and serviced by our factory-trained technicians.
Learn moreAir Conditioning & Mini Split FAQ
How much does mini split installation cost in New Hampshire?
A single-zone ductless mini split installation in Southern NH starts around $5,525 installed. That price covers the equipment, all electrical work, permits, and our workmanship warranty. Multi-zone systems with 2 or 3 indoor units typically run $8,500 to $19,500+ depending on the number of zones and complexity. NHSaves utility rebates and the New England Heat Pump Accelerator can reduce those costs for qualifying systems. We provide free written estimates with everything included upfront.
How much does central air conditioning installation cost in NH?
Central A/C installation starts around $6,550 installed for a standard system. That includes the equipment, all labor, electrical work, permits, and our workmanship warranty. Higher-efficiency units or systems requiring ductwork modifications will cost more. We provide free written estimates with everything included upfront.
What's the difference between a mini split and central air conditioning?
Central A/C uses ductwork to cool your entire home from one system. A ductless mini split uses individual wall units to cool specific zones, with no ductwork required. That makes mini splits ideal for homes with boilers, additions, or any space where running ducts isn't practical. Mini splits also provide heat, which makes them a year-round comfort solution.
Are there rebates for mini splits or heat pumps in NH?
Yes, and they're significant. NH utility companies offer NHSaves rebates based on system size and type for qualifying heat pump systems. We identify every incentive you qualify for during your free estimate and apply the NE Heat Pump Accelerator point-of-sale discount right at purchase. NHSaves rebates are filed through your utility using your account information, and we help you complete those applications.
Can a mini split heat my home through a New Hampshire winter?
Yes. Cold-climate heat pumps from Mitsubishi, Daikin, and Bosch are rated to operate efficiently in below-zero weather, down to around -13°F, and keep producing heat below that with reduced output. Many Southern NH homeowners use them as the primary heating system, or pair them with an existing furnace or boiler in a hybrid, dual fuel setup that runs the heat pump most of the year and the furnace only in the coldest stretches.
How long does mini split installation take?
Most mini split systems with one or two indoor units are completed in one day. Systems with three indoor units typically take two days, and four to five indoor units take about three days. We give you a clear timeline in your written estimate before any work begins.
Do you service mini splits you didn't install?
Yes. We service all major mini split brands, including Mitsubishi, Daikin, Fujitsu, LG, and Bosch, whether we installed them or not. Call 603-623-0412 to schedule service or repair.
Why does A.J. LeBlanc Heating have so much mini split experience?
Southern NH has a large stock of older homes heated by oil boilers with no ductwork, and that is exactly where mini splits make the most sense. A.J. LeBlanc Heating, in business since 1928, has installed thousands of mini splits, and our reputation has grown through customer referrals. We are also a Mitsubishi Diamond Dealer, Bosch Platinum Dealer, Daikin Comfort Pro, and LG Pro Dealer Platinum, with factory-certified training and access to the full product line with extended warranties.
Southern NH Communities We Serve
Free estimates and prompt service across Southern New Hampshire. Find your town for local details, or call 603-623-0412.
Services in Southern NH's Largest Cities
Manchester
Nashua
Mini Split & A/C Reviews
"Very happy with their service, I had split A/C put in my home, the installation was done in a timely manner. Everyone from the technicians to office staff were very pleasant and knowledgeable. Thank you, A.J. LeBlanc Heating."
"We had a new whole house a/c installed. The technicians were very competent and had the unit working for that evening of the first day of the two-day installation process. That made my wife extremely happy so that made me very happy as well. We are very pleased with the service and the installation."
"Excellent techs polite, friendly and everything was cleaned at the end of each day. Air conditioning is working great can't wait to see how they do at the start of the heating season."
Get in Touch
Fill out the form and we'll get back to you. Usually the same business day. For emergencies, call us directly.
Contact Information
Mon-Fri: 8am-4:30pm
Evenings & Weekends: Emergency Service
24/7 Emergency Service
No heat? No hot water? Call 603-623-0412 any time.