HVAC, Plumbing & Electrical
in Derry, NH
A.J. LeBlanc Heating serves Derry and Southern NH, family-owned since 1928. Licensed technicians, honest estimates, and 24/7 emergency service.

We Know
Derry Homes.
Derry is Rockingham County's most populous community, with housing that changes noticeably across town. A.J. LeBlanc Heating serves compact neighborhoods near the village center, subdivisions built during the I-93 growth years, and more rural properties toward East Derry, Chester, and Auburn.
Housing: More than half of Derry's homes were built during the 1970s and 1980s, with the 1980s representing the town's busiest building decade. Ranches, capes, and split-levels from that period are common, and the median home dates to about 1983. Pre-1940 houses remain near the village center, while newer subdivisions, larger rural lots, and farmhouses appear closer to the town lines. About one-third of Derry's housing units are in two-family homes, condominiums, apartments, and other multi-family buildings.
Heating: Oil heat remains common in Derry, particularly in its older neighborhoods, and many other homes use propane. Natural gas service is limited to a short section of the I-93 corridor through Liberty Utilities. A.J. LeBlanc Heating replaces oil and propane furnaces and boilers, services gas equipment where utility service is available, and installs cold-climate heat pumps for homeowners considering another option. We evaluate the home's heating needs, existing piping or ductwork, fuel availability, and electrical capacity before recommending a replacement.
Cooling: Many Derry ranches, capes, split-levels, and older homes were built around boiler heat and would need new ductwork to use central A/C. A mini split system can add zoned summer cooling and efficient supplemental heat without extensive changes to finished walls or ceilings. Newer homes with suitable ductwork may accommodate central A/C or a ducted heat pump. In two-family homes and condominiums, A.J. LeBlanc Heating sizes and controls each zone for the living space it serves.
Complete Home Services
for Derry 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 Derry. Annual maintenance and 24/7 emergency response.
Heating ServicesAir Conditioning
Central A/C and ductless mini-split installation and service in Derry. 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 Derry homes.
Plumbing ServicesElectrical
Panel upgrades, generators, EV chargers, and electrical repair for Derry homeowners. Licensed NH electricians.
Electrical Services
Furnaces, Boilers &
Heat Pumps
We install and service all heating equipment in Derry. 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 Derry 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 Derry.
Trusted Since 1928.
Derry is a regular part of A.J. LeBlanc Heating's service area for both planned projects and urgent repairs. We help homeowners compare a like-for-like furnace or boiler replacement with alternatives such as a cold-climate heat pump, then coordinate related plumbing or electrical work when needed. Our family-owned company has served New Hampshire since 1928, and we base every recommendation on the home in front of us.
Based in Bedford, about 20 minutes from Derry
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
"I have used A.J. LeBlanc Heating for over 10 years and I have never been disappointed with their personnel or the work product. I highly recommend LeBlanc Heating."
"Continuous excellent service with honest and helpful employees."
"Justin did an awesome job making sure my system was running properly and went above and beyond to make sure it was safely and properly vented to prevent any CO danger. He was courteous, professional and articulate when explaining what needed to be done and why."
HVAC & Plumbing FAQ
for Derry, NH
Do you service Derry, NH?
Yes. Derry is one of our core service areas. We provide heating, air conditioning, plumbing, and electrical services throughout Derry and the surrounding Rockingham County area. Call 603-623-0412 for a free estimate.
How quickly can you respond in Derry?
Our Bedford headquarters is about 20 minutes from Derry. 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 Derry?
Yes. We provide 24/7 emergency HVAC service in Derry 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 Derry?
Derry 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 Derry?
Oil heat remains common in Derry, particularly in its older neighborhoods, and many other homes use propane. Natural gas service is limited to a short section of the I-93 corridor through Liberty Utilities. A.J. LeBlanc Heating replaces oil and propane furnaces and boilers, services gas equipment where utility service is available, and installs cold-climate heat pumps for homeowners considering another option. We evaluate the home's heating needs, existing piping or ductwork, fuel availability, and electrical capacity before recommending a 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 Derry
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.