HVAC, Plumbing & Electrical
in Brentwood, NH
A.J. LeBlanc Heating serves Brentwood 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 Brentwood Homeowners
Our licensed 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
Furnace, boiler, and heat pump installation and repair in Brentwood. Annual maintenance and 24/7 emergency response.
Heating ServicesAir Conditioning
Central A/C and ductless mini split installation and service in Brentwood. We've installed thousands of ductless systems across Southern NH.
A/C ServicesPlumbing
Water heaters, drains, fixtures, water-supply piping, and residential plumbing repairs for Brentwood homes.
Plumbing ServicesElectrical
Panel upgrades, generators, EV chargers, and electrical repair for Brentwood homeowners. Licensed NH electricians.
Electrical Services
We Know
Brentwood Homes.
Brentwood is rural and mostly residential, tucked into Rockingham County between the Seacoast and the interior. The town is the county seat, and the Exeter River and its tributaries run through town. Nearly every home is a single-family house, and most are owner-occupied. The housing is a mix of older places and newer builds.
Housing: Most homes in Brentwood are single-family houses, and most are owner-occupied, with only a small share of multi-family housing. A lot of the building went up between 1990 and 2009, so plenty of the housing is fairly new. The median home dates to about 1995. You'll still find older farmhouses and pre-1940 places mixed in. No natural gas main runs through most of town, so homes here run on oil or propane.
Furnaces, Boilers &
Heat Pumps
Heating in Brentwood
Many Brentwood homes heat with oil, with propane also common. Unitil provides natural gas service along limited corridors, including Route 27, but availability must be confirmed for the address. We regularly replace and service oil and propane boilers and furnaces in both newer homes and older farmhouses. Where gas is available, we can compare an oil-to-gas conversion with staying on the existing fuel or moving toward a heat pump. The best fit depends on the house, its ductwork, and the equipment already there.
Heating Services We Provide
Brentwood 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 Brentwood
Newer Brentwood homes often have forced-air ductwork that may support central A/C or a ducted heat pump after we verify airflow and capacity. Older farmhouses heated by boilers may be better suited to ductless mini splits. Either type of heat pump can provide summer cooling and reduce oil or propane use during spring and fall. We size the system to the home and the rooms it needs to serve.
Cooling Services We Provide
We install, repair, and service all types of cooling equipment in Brentwood, 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 Brentwood
Private wells are the main residential water source in Brentwood. The state also included the town in a broader area targeted for arsenic and uranium testing. That supports testing for both contaminants, but it does not prove either is present in a particular well.
We use a laboratory panel covering health-related contaminants, pH, hardness, and the conditions that can cause staining or odor. Confirmed arsenic may lead to under-sink reverse osmosis or whole-house arsenic filtration, while uranium requires treatment selected for the measured uranium result and verified for that contaminant. Other findings may call for sediment filtration, iron or manganese filtration, a softener, sulfur-odor treatment, or whole-house ultraviolet treatment when bacteria are confirmed.
If radon aeration is recommended, we can provide contact information for an independent company.
Water Treatment Services We Provide
Our team installs and services water-treatment equipment for Brentwood 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 Brentwood
Most Brentwood homes use private wells, and treatment can reduce the effect of tested iron, hardness, or sediment on fixtures and water heaters. We repair dripping faucets, running toilets, shutoff valves, leaking supply piping, water heaters, and household drains. When low pressure affects the entire home, we inspect the well tank, pressure switch, and related controls.
A problem limited to one fixture stays focused on that fixture and the pipes serving it.
Plumbing Services We Provide
From everyday plumbing repairs to water-heater and well-tank service, we help homeowners throughout Brentwood. 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 Brentwood
The company you already trust for heating and cooling in Brentwood 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 Brentwood.
Trusted Since 1928.
We handle all four trades in Brentwood. Oil heats most of the town, so a big chunk of the work is oil heating service and replacement, tank and fuel-system work, and mini split and heat pump installs. We've been family-owned since 1928, and a Brentwood homeowner gets the same crews whether the job is a planned boiler replacement or a no-heat call.
Based in Bedford, about 35 minutes from Brentwood
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
"Great customer service, technicians were professional and friendly. And LOVED the "thank you" mugs and awesome cupcake cookies! Thank you!"
"Continuous excellent service with honest and helpful employees."
"The installation crew was great. The product has lived up to billing so far. The company helped me get a big rebate from Eversource. My wife liked your complimentary cups and cupcakes."
HVAC, Plumbing & Water FAQ
for Brentwood, NH
Do you service Brentwood, NH?
Yes. Brentwood is one of our core service areas. We provide heating, air conditioning, plumbing, and electrical services throughout Brentwood and the surrounding Rockingham County area. Call 603-623-0412 for a free estimate.
How quickly can you respond in Brentwood?
Our Bedford headquarters is about 35 minutes from Brentwood. 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 Brentwood?
Yes. We provide 24/7 emergency service in Brentwood. Call 603-623-0412 any time, day or night, including weekends and holidays.
Are there heating or cooling rebates available in Brentwood?
Brentwood 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 Brentwood?
Heating systems vary from one Brentwood 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 Brentwood?
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 Brentwood?
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 Brentwood?
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 Brentwood?
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 Brentwood
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.