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

We Know
Hopkinton Homes.
Hopkinton covers about 45 square miles west of Concord and includes the villages of Hopkinton, Contoocook, and West Hopkinton. A.J. LeBlanc Heating serves historic village properties, rural homes, and newer neighborhoods closer to I-89.
Housing: About 87 percent of Hopkinton's housing units are single-family homes, with a relatively small multi-family share. Roughly one-third of the housing predates 1940, more than half was built before 1970, and the median home dates to about 1968. Older colonials and farmhouses surround the villages, while 1970s and 1980s neighborhoods and later construction near I-89 add several more building eras. That range produces a broad mix of boilers, furnaces, ductwork, and mechanical spaces.
Heating: Hopkinton has no natural gas service, so homes use oil, propane, electricity, and heat pumps. Older colonials and farmhouses near the villages often have oil boilers, while later neighborhoods include oil- and propane-fired boilers and furnaces. A.J. LeBlanc Heating services and replaces that equipment and installs cold-climate heat pumps for homeowners considering an alternative. We evaluate the home's distribution system, heating needs, fuel goals, and electrical capacity before recommending a path.
Cooling: Many pre-1940 and mid-century Hopkinton homes use boilers and radiators and lack a duct system for conventional central cooling. A properly designed mini split can deliver zoned cooling and supplemental heat with limited disruption to plaster and finished walls. Homes with suitable forced-air ducts can often use central A/C or ducted heat-pump equipment. A.J. LeBlanc Heating plans the system around the building layout, existing equipment, and electrical capacity.
Complete Home Services
for Hopkinton 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 Hopkinton. Annual maintenance and 24/7 emergency response.
Heating ServicesAir Conditioning
Central A/C and ductless mini-split installation and service in Hopkinton. 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 Hopkinton homes.
Plumbing ServicesElectrical
Panel upgrades, generators, EV chargers, and electrical repair for Hopkinton homeowners. Licensed NH electricians.
Electrical Services
Furnaces, Boilers &
Heat Pumps
We install and service all heating equipment in Hopkinton. 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 Hopkinton 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 Hopkinton.
Trusted Since 1928.
A.J. LeBlanc Heating serves Hopkinton, Contoocook, and West Hopkinton. Our work spans aging oil boilers, propane equipment, central and ductless heat pumps, plumbing, electrical systems, and water treatment in homes ranging from pre-1940 farmhouses to newer subdivisions. We size equipment carefully, plan around tight utility rooms and older finishes, and leave the work area clean. The company has been family-owned since 1928.
Based in Bedford, about 25 minutes from Hopkinton
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
"Technicians were prompt, cleaned the work area, and answered any questions we had. Would definitely use this company again."
"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 appointment I found the receptionist to be very customer service oriented and she went above and beyond finding me an extra early appointment. Thanks!"
"Dennis was excellent. Very knowledgeable and efficient with his work. Solved the problem quickly and in a timely manner."
HVAC & Plumbing FAQ
for Hopkinton, NH
Do you service Hopkinton, NH?
Yes. Hopkinton is one of our core service areas. We provide heating, air conditioning, plumbing, and electrical services throughout Hopkinton and the surrounding Merrimack County area. Call 603-623-0412 for a free estimate.
How quickly can you respond in Hopkinton?
Our Bedford headquarters is about 25 minutes from Hopkinton. 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 Hopkinton?
Yes. We provide 24/7 emergency HVAC service in Hopkinton 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 Hopkinton?
Hopkinton 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 Hopkinton?
Hopkinton has no natural gas service, so homes use oil, propane, electricity, and heat pumps. Older colonials and farmhouses near the villages often have oil boilers, while later neighborhoods include oil- and propane-fired boilers and furnaces. A.J. LeBlanc Heating services and replaces that equipment and installs cold-climate heat pumps for homeowners considering an alternative. We evaluate the home's distribution system, heating needs, fuel goals, and electrical capacity before recommending a path. 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 Hopkinton
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.