HVAC, Plumbing & Electrical
in Allenstown, NH
A.J. LeBlanc Heating serves Allenstown 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.
Complete Home Services
for Allenstown 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 Allenstown, with 24/7 emergency service available.
Heating ServicesAir Conditioning
We install and service central A/C and ductless mini split systems in Allenstown. Our team has installed thousands of ductless systems across Southern NH.
A/C ServicesPlumbing
Our licensed plumbers handle water heaters, drains, fixtures, water-supply piping, and residential plumbing repairs in Allenstown homes.
Plumbing ServicesElectrical
Our licensed New Hampshire electricians handle panel upgrades, standby generators, EV chargers, and electrical repairs for Allenstown homeowners.
Electrical Services
We Know
Allenstown Homes.
Allenstown lies along the Suncook River south of Concord, with many homes clustered near Suncook Village and the Pembroke line. Bear Brook State Park occupies more than half of the town, which keeps the residential areas relatively compact. A.J. LeBlanc Heating serves neighborhoods close to the river and the park boundaries.
Housing: Allenstown includes several distinct housing types. Single-family homes are the largest group, while roughly one-third of the town's housing consists of manufactured homes and older multi-family buildings are found near the Suncook Village mills. Ranches and capes from the 1970s and 1980s are common, with some pre-1940 New Englanders still in place. The median Allenstown home dates to about 1981.
Furnaces, Boilers &
Heat Pumps
Heating in Allenstown
Oil remains common in Allenstown's older homes. Liberty Utilities provides natural gas in the denser Suncook Village area, so A.J. LeBlanc Heating completes gas replacements and oil-to-gas conversions where service is available at the address. Homes beyond gas service may use oil, propane, electricity, or cold-climate heat pumps. Manufactured homes require correctly sized equipment and components approved for that housing type, and we evaluate the existing system and ductwork before selecting a replacement.
Heating Services We Provide
Allenstown homeowners can call us for heating installation, repairs, and annual service. We also replace complete heating systems and respond quickly when something goes wrong.
- Gas & Oil Furnace Installation
- Boiler Installation & Repair
- Heat Pump Installation
- Water Heater Replacement
- Annual Heating Maintenance
- 24/7 Emergency Heating Service
Air Conditioning &
Mini Split Installation
Cooling in Allenstown
Many Allenstown New Englanders, ranches, and capes were built without central-air ductwork. A properly designed mini split can deliver zoned cooling with limited changes to finished rooms. In manufactured homes, A.J. LeBlanc Heating evaluates the existing duct system and matches the equipment to the home's construction and applicable requirements. Houses with suitable forced-air ducts can often use central A/C or ducted heat-pump equipment.
Cooling Services We Provide
We install, repair, and service all types of cooling equipment in Allenstown, including central air, heat pumps, and ductless mini splits. With thousands of ductless installations completed across Southern NH, our team has extensive experience. We respond quickly when you need a repair or replacement.
- Central A/C Installation
- Ductless Mini Split Systems
- Heat Pump Installation
- A/C Repair & Tune-Up
- Indoor Air Quality
Filtration, Softeners
& Testing
Water Treatment in Allenstown
Pembroke Water Works serves Downtown Allenstown and Suncook Village from gravel-packed wells near the Soucook and Suncook rivers. Other properties use community or private wells. Public-water customers can begin with the utility report and choose whole-house activated carbon for a taste or odor concern, or an under-sink carbon or reverse osmosis system for drinking and cooking water.
A.J. LeBlanc Heating collects the private-well sample for independent laboratory analysis and uses the results to select sediment, iron, manganese, hardness, sulfur-odor, ultraviolet, or arsenic treatment. When radon aeration is recommended, we direct the homeowner to an independent company.
Water Treatment Services We Provide
Our team installs and services water-treatment equipment for Allenstown homes. We use independent laboratory results for private wells and the utility report and condition at the tap for public-water homes.
- Well Water Filtration
- Water Softeners
- Iron & Manganese Removal
- Reverse Osmosis Drinking Water
- UV Purification
- Water Sampling & Independent Laboratory Testing
Water Heaters, Drains
& Fixtures
Plumbing in Allenstown
Allenstown's older houses, manufactured homes, and multi-family properties near Suncook Village require plumbing repairs suited to the building. A.J. LeBlanc Heating repairs leaking fixtures and supply lines, running toilets, failed shutoff valves, slow drains, and water heaters. At private-well properties, well tank and pressure switch service is also available.
We inspect the affected plumbing, explain what failed, and plan the repair around the available access and home type.
Plumbing Services We Provide
From everyday plumbing repairs to water-heater and well-tank service, we help homeowners throughout Allenstown. We also service pressure switches and related well-system controls.
- Water Heater Installation
- Well Tanks, Pressure Switches & Controls
- Drain Cleaning
- Faucet & Fixture Installation
- Household Water-Supply & Drain Piping
- Repairs & Service
Panels, Generators
& EV Chargers
Electrical in Allenstown
The company you already trust for heating and cooling in Allenstown can handle your electrical work too. Our electrical work is completed by licensed New Hampshire electricians.
Electrical Services We Provide
Call us for a panel upgrade, standby generator, or new EV charger. We respond quickly and make sure the work is completed to code.
- Electrical Panel Upgrades
- Standby Generator Installation
- EV Charger Installation
- Lighting, Outlets & Switches
- Electrical Repair & Service
Local to Allenstown.
Trusted Since 1928.
Allenstown's mix of older houses, manufactured homes, and properties around Suncook Village requires more than one installation approach. A.J. LeBlanc Heating services and replaces oil and gas boilers and furnaces, installs central and ductless heat pumps, and matches manufactured-home equipment to the existing duct system and applicable requirements. Natural-gas conversions remain address-specific because service is concentrated in the denser village area.
Based in Bedford, about 20 minutes from Allenstown
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.
What Southern NH
Homeowners Say
"Continuous excellent service with honest and helpful employees."
"It's refreshing dealing with a company that stands by the products it sells and backs it up with excellent customer service."
"Great job from start to finish!"
HVAC, Plumbing & Water FAQ
for Allenstown, NH
Do you service Allenstown, NH?
Yes. Allenstown is one of our core service areas. We provide heating, air conditioning, plumbing, and electrical services throughout Allenstown and the surrounding Merrimack County area. Call 603-623-0412 for a free estimate.
How quickly can you respond in Allenstown?
Our Bedford headquarters is about 20 minutes from Allenstown. 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 Allenstown?
Yes. We provide 24/7 emergency service in Allenstown. Call 603-623-0412 any time, day or night, including weekends and holidays.
Are there heating or cooling rebates available in Allenstown?
Allenstown 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 Allenstown?
Heating systems vary from one Allenstown 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 Allenstown?
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 Allenstown?
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 Allenstown?
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 Allenstown?
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.
Also Serving Towns Near Allenstown
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.