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HVAC, Plumbing & Electrical
in Nashua, NH

A.J. LeBlanc Heating serves Nashua and Southern New Hampshire. Family-owned since 1928, our EPA-certified HVAC technicians, licensed plumbers, licensed electricians, and water-treatment specialists provide honest estimates and 24/7 emergency service.

Family-Owned Since 1928
Licensed & Insured
What We Do in Nashua

Complete Home Services
for Nashua Homeowners

Our in-house heating, cooling, plumbing, and electrical teams work together under one roof. Homeowners get one company to coordinate the job and one clear point of contact from start to finish.

Heating

We install, repair, and maintain furnaces, boilers, and heat pumps in Nashua, with 24/7 emergency service available.

Heating Services

Air Conditioning

We install and service central A/C and ductless mini split systems in Nashua. Our team has installed thousands of ductless systems across Southern NH.

A/C Services

Plumbing

Our licensed plumbers handle water heaters, drains, fixtures, water-supply piping, and residential plumbing repairs in Nashua homes.

Plumbing Services

Electrical

Our licensed New Hampshire electricians handle panel upgrades, standby generators, EV chargers, and electrical repairs for Nashua homeowners.

Electrical Services
A.J. LeBlanc Heating service fleet and team serving Nashua, NH
Serving Nashua, NH

We Know
Nashua Homes.

Nashua is New Hampshire's second-largest city and one of the busiest parts of our service area. Its nearly even mix of single-family and multi-family housing ranges from pre-1940 neighborhoods near the center to newer homes toward the edges of the city, with the median home dating to 1976.

Housing: Nashua's pre-1940 core includes colonials and capes along with Late Victorian, Italianate, and Federal homes around French Hill. Nearly half of the city's housing units are in multi-family buildings, including two- and three-family homes and larger apartment buildings near the Millyard. Suburban neighborhoods to the north and west grew largely during the 1970s and 1980s, with newer construction mixed in. The median Nashua home dates to 1976, so the city contains several generations of heating, cooling, plumbing, and electrical systems.

Money Magazine named Nashua the best place to live in America in both 1987 and 1997, making it the only city to receive the top ranking twice. The city's broad mix of historic homes, multi-family properties, and later suburban development calls for service that is planned around the building rather than a standard package. A.J. LeBlanc Heating brings that practical approach to homes across Nashua.
New furnace installation by A.J. LeBlanc Heating in Southern NH
Heating

Furnaces, Boilers &
Heat Pumps

Heating in Nashua

Liberty Utilities provides natural gas across much of Nashua. Forced-air gas heat is common in many suburban neighborhoods, while older in-town homes and multi-family buildings often use boilers, including oil-fired equipment. A.J. LeBlanc Heating replaces furnaces and boilers, completes oil-to-gas conversions where service is available, and works on oil and propane systems where it is not. In a multi-family building, we also evaluate the existing zones and whether one system serves more than one unit before recommending a replacement.

Heating Services We Provide

We take care of all heating equipment in Nashua. From routine annual service to emergency repairs and full system replacements, our team is ready to help.

  • Gas & Oil Furnace Installation
  • Boiler Installation & Repair
  • Heat Pump Installation
  • Water Heater Replacement
  • Annual Heating Maintenance
  • 24/7 Emergency Heating Service
Ductless mini split heat pump installation by A.J. LeBlanc Heating in Southern NH
Cooling

Air Conditioning &
Mini Split Installation

Cooling in Nashua

Nashua homes with suitable forced-air ductwork may be good candidates for central A/C or a ducted heat pump. Many pre-1940 homes downtown, French Hill houses, and multi-family buildings do not have those ducts. In these homes, a mini split system can add zoned cooling without cutting through extensive finished space. A.J. LeBlanc Heating checks airflow, duct capacity, electrical capacity, and the building layout before designing the system. In a two- or three-family property, separate mini split zones can also keep each living space under its own control.

Cooling Services We Provide

From central air conditioning to heat pumps and ductless mini splits, we handle cooling installation and service in Nashua. We have completed thousands of ductless installations across Southern NH. Call us for a quick response to a summer breakdown or full system replacement.

  • Central A/C Installation
  • Ductless Mini Split Systems
  • Heat Pump Installation
  • A/C Repair & Tune-Up
  • Indoor Air Quality
Water treatment and filtration by A.J. LeBlanc Heating in Nashua, NH
Water Treatment

Filtration, Softeners
& Testing

Water Treatment in Nashua

Pennichuck's Core system serves most Nashua homes. Its sources include the Merrimack River, Pennichuck Brook, and Supply Pond, and the utility uses carbon filtration and disinfection before sending the water into the distribution system. Because the finished water is classified as soft, a whole-house softener is usually unnecessary.

For a specific taste, odor, or drinking-water goal, A.J. LeBlanc Heating can install whole-house activated carbon or an under-sink carbon or reverse osmosis system. We match the equipment to the result the homeowner wants without duplicating treatment the public system already provides.

Water Treatment Services We Provide

We install and service water-treatment systems throughout Nashua. When testing is needed, we send a water sample to an independent laboratory and use the results to select and size the appropriate equipment.

  • Well Water Filtration
  • Water Softeners
  • Iron & Manganese Removal
  • Reverse Osmosis Drinking Water
  • UV Purification
  • Water Sampling & Independent Laboratory Testing
Plumbing service by A.J. LeBlanc Heating in Nashua, NH
Plumbing

Water Heaters, Drains
& Fixtures

Plumbing in Nashua

Nashua's mix of older houses, multi-family buildings, and later suburban homes includes many generations of fixtures, valves, supply piping, drains, and water heaters. A.J. LeBlanc Heating repairs leaking faucets, running toilets, aging shutoff valves, damaged supply lines, slow drains, and water-heater problems. Some older properties still have cast-iron drain sections, which we can replace when leaks or internal deterioration make the piping unreliable.

We locate the failure, explain the repair in plain language, and plan access carefully in occupied multi-family buildings.

Plumbing Services We Provide

We provide residential plumbing service throughout Nashua, including fixture repairs, water heaters, household drains, water-supply piping, well tanks, pressure switches, and related controls. We respond quickly and explain the work clearly.

  • Water Heater Installation
  • Well Tanks, Pressure Switches & Controls
  • Drain Cleaning
  • Faucet & Fixture Installation
  • Household Water-Supply & Drain Piping
  • Repairs & Service
Licensed electrician panel work by A.J. LeBlanc Heating in Nashua, NH
Electrical

Panels, Generators
& EV Chargers

Electrical in Nashua

You can turn to the same trusted company for heating, cooling, and electrical work in Nashua. Our New Hampshire electricians are licensed to do the job properly.

Electrical Services We Provide

Our electrical services include panel upgrades, standby generators, and EV charger installations. We provide a quick response and do the work to code.

  • Electrical Panel Upgrades
  • Standby Generator Installation
  • EV Charger Installation
  • Lighting, Outlets & Switches
  • Electrical Repair & Service
A.J. LeBlanc Heating vintage red truck in Southern New Hampshire, serving Nashua since 1928
Why Work With Us

Local to Nashua.
Trusted Since 1928.

A.J. LeBlanc Heating serves homes throughout Nashua, from the older downtown neighborhoods to newer development near the city's edges. Our family-owned company has been in business since 1928 and works on everything from older boiler systems to modern high-efficiency heat pumps. We usually offer appointments within one to two business days, with same-day service available when the schedule allows and 24/7 help for urgent problems.

Based in Bedford, about 20 minutes from Nashua

Our shop is on South River Road in Bedford. We know the roads and we respond quickly.

Licensed, Insured & Background-Checked

Every A.J. LeBlanc HVAC technician holds EPA Section 608 certification and a separate New Hampshire fuel gas fitter license. Our plumbers and electricians are New Hampshire master or journeyman licensed in their trade. A.J. LeBlanc Heating is ACCA QA Certified.

Not Commission-Based

Our technicians are not paid sales commission. Their recommendations stay focused on what the home needs.

24/7 Emergency Response

No heat at 2am? We answer the phone every day of the year, including holidays.

Project Gallery

Recent Work in Nashua

Real photos from jobs our technicians completed in Nashua. This is our actual work, not stock photography.

EV Charger by A.J. LeBlanc Heating in a Nashua single-family home.
EV Charger · single-family home · Nashua
Mini Split by A.J. LeBlanc Heating in Nashua, NH.
Mini Split · Nashua
Customer Reviews

What Southern NH
Homeowners Say

"we've always been pleased with the services provided by A.J. LeBlanc Plumbing & Heating. They are timely, knowledgeable, friendly and professional. We would recommend them to anyone."

Cindy Porter
Plumbing

"I found A.J. LeBlanc Heating easy to work with and friendly."

David Levy
Satisfied Customer

"I have been using A.J. LeBlanc Heating for 30 years. A local company with excellent service. Good old family service, even as they have grown larger through the years. Honest and reasonably priced."

Roland Ramponi
30-year Customer
Common Questions

HVAC, Plumbing & Water FAQ
for Nashua, NH

Do you service Nashua, NH?

Yes. Nashua is one of our core service areas. We provide heating, air conditioning, plumbing, and electrical services throughout Nashua and the surrounding Hillsborough County area. Call 603-623-0412 for a free estimate.

How quickly can you respond in Nashua?

Our Bedford headquarters is about 20 minutes from Nashua. We typically schedule service within 1-2 business days, with same-day appointments for emergencies when scheduling allows. For urgent heating or cooling issues, call us directly at 603-623-0412.

Do you offer emergency service in Nashua?

Yes. We provide 24/7 emergency service in Nashua. Call 603-623-0412 any time, day or night, including weekends and holidays.

Are there heating or cooling rebates available in Nashua?

Nashua homeowners may qualify for NHSaves rebates through Eversource, Liberty Utilities, New Hampshire Electric Cooperative, or Unitil. Additional New England Heat Pump Accelerator incentives may apply to qualifying equipment. Program rules and funding can change, so we confirm the current options when preparing the estimate.

Do you handle both HVAC and plumbing?

Yes. We handle heating, cooling, plumbing, and electrical all under one roof. That means one call, one relationship, and one company familiar with your whole home. No coordinating between multiple vendors or schedules.

What heating systems are common in Nashua?

Heating systems vary from one Nashua home to another. We service boilers, furnaces, heat pumps, and other common systems. After inspecting the home, we explain the repair or replacement options clearly.

Do I need water treatment in Nashua?

It depends on your water source and your goals. For a private well, we collect a sample and send it to an independent laboratory. We use the results to recommend treatment only when the water calls for it. For public water, we review the utility report and investigate the condition at the tap before recommending additional equipment.

What water treatment systems do you install in Nashua?

We install water softeners, iron and manganese filters, sediment filters, activated-carbon filters, whole-house ultraviolet systems, arsenic-treatment systems, and under-sink reverse osmosis. Equipment is selected and sized from independent laboratory results, the public-water report, and the homeowner's specific goal. For radon in well water, we can provide contact information for an independent mitigation company.

What plumbing services do you offer in Nashua?

We handle water heaters, drain cleaning, faucet and fixture installation, leak and pipe repair, shutoff valves, and water-supply and drain piping throughout the home. If the home uses a private well, we also service the well tank, pressure switch, and related controls. We complete selected exterior piping as well, including irrigation and accessory-dwelling-unit connections.

Do you install and replace water heaters in Nashua?

Yes. We install and replace natural gas, propane, oil, and electric water heaters, plus heat-pump water heaters. We help you choose the right size and fuel for your home and install it to code.

Service Area

Also Serving Towns Near Nashua

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Contact Information

Hours

Mon-Fri: 8am-4:30pm
Evenings & Weekends: Emergency Service

24/7 Emergency Service

No heat? No hot water? Call 603-623-0412 any time.