HVAC, Plumbing & Electrical
in Allenstown, NH
A.J. LeBlanc Heating has served Allenstown and Southern NH since 1928. Licensed technicians, honest estimates, and 24/7 emergency service.
We Know
Allenstown Homes.
Allenstown is a small community south of Concord on the Suncook River. Compact neighborhoods and a quiet residential character.
Housing: Smaller ranches, capes, and older New Englanders. Much of the housing stock dates back several decades.
Heating: Oil heat is common and we do regular boiler and furnace work in Allenstown. Some homeowners are looking at heat pump options when their oil systems come due for replacement.
Cooling: Mini splits are a practical and affordable cooling upgrade for these homes, and the installation is usually straightforward.
Complete Home Services
for Allenstown Homeowners
One call covers everything. Our licensed teams handle heating, cooling, plumbing, and electrical so you don't have to coordinate between separate companies for each trade.
Heating
Furnace, boiler, and heat pump installation and repair in Allenstown. Annual maintenance and 24/7 emergency response.
Heating ServicesAir Conditioning
Central A/C and ductless mini-split installation and service in Allenstown. We've installed thousands of ductless systems across Southern NH.
A/C ServicesPlumbing
Kitchen and bath remodeling, water heaters, drains, and full plumbing service for Allenstown homes.
Plumbing ServicesElectrical
Panel upgrades, generators, EV chargers, and electrical repair for Allenstown homeowners. Licensed NH electricians.
Electrical Services
Furnaces, Boilers &
Heat Pumps
We install and service all heating equipment in Allenstown. From emergency repairs to annual service to full system replacements, we respond quickly.
- 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
A.J. LeBlanc Heating has installed thousands of ductless systems across Southern NH. We help Allenstown homeowners choose the right cooling solution for their home and budget.
- Central A/C Installation
- Ductless Mini Split Systems
- Heat Pump Installation
- A/C Repair & Tune-Up
- Indoor Air Quality
Local to Allenstown.
Trusted Since 1928.
Most of our Allenstown calls are oil boiler or furnace work in homes that have not seen a full mechanical update in 20 or 30 years. We bring the right parts to get the diagnosis done in one visit whenever we can.
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 HVAC technician is EPA certified and NH gas-licensed. Our plumbers and electricians are NH master or journeyman licensed in their trade. A.J. LeBlanc Heating is ACCA QA Certified.
Not Commission-Based
Our techs earn the same no matter what they recommend. You always get an honest answer.
24/7 Emergency Response
No heat at 2am? We answer the phone every day of the year, including holidays.
What Southern NH
Homeowners Say
"Honest and reliable service. Always satisfied."
"The gentleman was on time and professional. I would say he went above and beyond to meet my service needs. Needless to say I was very impressed. In addition when calling to set up my appoint I found the receptionist to be very customer service oriented and she went above in beyond finding me an extra early appointment. Thanks!"
"A.J. LeBlanc Heating did a great job. They offered straight-forward options before the work and set clear expectations for what the costs and schedule would be. Work was completed right on time by very professional and capable technicians. Very good value for the money."
HVAC & Plumbing 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 availability for emergencies. 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 HVAC service in Allenstown for all existing customers. No heat or hot water? Call 603-623-0412 any time, day or night, weekends and holidays included.
Are there heating or cooling rebates available in Allenstown?
Allenstown homeowners may qualify for NHSaves rebates through Eversource, Unitil, or Liberty Utilities, plus NEHPA rebates on qualifying cold-climate heat pumps. We'll help you identify every rebate that applies to your home and equipment. Just ask when you call for your 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?
Oil heat is common and we do regular boiler and furnace work in Allenstown. Some homeowners are looking at heat pump options when their oil systems come due for replacement. Whatever system you have, we service it. If it's time to replace, we'll walk you through all the options honestly.
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.
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Pick a date and time that works for you. Service, maintenance, or estimate visits, no phone tag.
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.