Water Heater Installation
in Southern NH
A.J. LeBlanc Heating installs gas, electric, oil, tankless, indirect, and hybrid heat pump water heaters throughout Southern NH. Family-owned since 1928. We carry Bradford White, Navien, and Rinnai in our trucks and offer same-day replacement on most tank calls.
Traditional Tank Water Heater Installation
When your water heater fails, you need it replaced fast. A.J. LeBlanc Heating carries common tank sizes in our service trucks and handles same-day replacement on most calls throughout Southern NH. We install gas, electric, and oil-fired tank water heaters: Bradford White and State (both made in the USA) plus Rheem for gas and electric; Bock and Everhot for oil-fired.
- Gas, electric, and oil-fired tank water heater replacement
- Bradford White & State (both made in the USA), Rheem (gas & electric)
- Bock, Everhot (oil-fired)
- 30, 40, and 50 gallon units in stock
- Same-day installation available on most calls
- Indirect water heaters for homes with a boiler (gas or oil)
- All permits and inspections handled, old unit hauled away
Tankless Water Heater Installation
Tankless water heaters deliver endless hot water on demand, use 20 to 30 percent less energy than tank units, and last twice as long. A.J. LeBlanc Heating installs Navien and Rinnai tankless systems throughout Southern NH and handles all the gas line, venting, and electrical work required for a clean installation.
- Navien and Rinnai tankless installation
- Endless hot water, never run out
- 20 to 30 percent energy savings over tank units
- Combi units available, heat and hot water in one
- All gas, venting, and electrical work included
- NHSaves rebates may apply
Water Heater Installations
Water Heater Brands We Install & Service
Bradford White
American-made water heaters sold only through professional contractors. A reliable choice for traditional gas and electric tank water heater replacements.
Learn more
State Water Heaters
Built for durability in the toughest conditions. State components are manufactured to stricter standards for longer product life.
Learn more
Navien
Navien condensing boilers and tankless water heaters are among the most efficient available: up to 0.96 UEF tankless and 95% AFUE condensing boilers.
Learn more
Rinnai
Innovative tankless water heaters and condensing boilers. Endless hot water with up to 40% energy savings compared to tank systems.
Learn more
Rheem
Complete heating, cooling, and water heating under one brand. Rheem furnaces, air conditioners, heat pumps, and water heaters all from a single trusted source.
Learn more
A.O. Smith
A global leader in water heating technology for more than 70 years. Reliable electric, gas, power-vent, and heat pump models.
Learn more
HTP SuperStor
Indirect water storage tanks that pair with your boiler for highly efficient domestic hot water production.
Learn more
Heat-Flo
Indirect water heaters, high-output stainless tanks, hydronic buffer tanks, and storage tanks. Made for pairing with gas and oil boilers.
Learn more
Bock
Bock Water Heaters has manufactured oil-fired water heaters in Wisconsin since 1929 and is the #1 selling oil-fired water heater in North America. Acquired by Bradford White Corporation in 2025.
Learn more
Everhot by Therma-Flow
Everhot oil-fired tank water heaters from Therma-Flow, Inc. ("tfi everhot"). Glass-lined standalone oil-fired tanks built for NH homes already running on oil heat. Long lifespan, high recovery rates, and a Northeast plumbing-trade staple.
Learn moreWater Heater FAQ
How much does water heater installation cost in NH?
A traditional tank water heater replacement in Southern NH typically runs $1,200 to $3,500 installed. Tankless water heaters run $2,800 to $5,600 installed depending on venting and gas line requirements. We provide free written estimates with all costs upfront.
How long does installation take?
Tank water heater replacements typically take two to three hours. Tankless installations take four to six hours depending on venting and gas line work. Most tank replacements can be done same-day.
Tank vs. tankless, which should I get?
Tank units are less expensive upfront and simpler to install. Tankless units cost more to install but last twice as long, use less energy, and never run out of hot water. For most homeowners planning to stay in their home, tankless pays for itself within 5 to 8 years. We're happy to walk you through both options on your estimate.
My water heater just failed, can you come today?
Yes. We carry Bradford White tank units in our vehicles and offer same-day replacement on most calls throughout Southern NH. Call 603-623-0412 and we'll get someone out as fast as possible.
Are there rebates for water heaters?
NHSaves rebates are available for qualifying heat pump water heaters. Navien tankless units may also qualify depending on current program offerings. We'll identify what applies at the time of your estimate.
Do you install oil-fired water heaters?
Yes. We install standalone oil-fired tank water heaters (Bock and Everhot) and indirect water heaters that run off your existing oil boiler. Indirect tanks are a great fit for NH homes already heating with oil since they use the boiler you already own to make domestic hot water.
Get a Free Water Heater Estimate
No hot water? We carry units in our trucks and offer same-day replacement throughout Southern NH. Call now or request an estimate online.
Get in Touch
Fill out the form and we'll get back to you. Usually the same business day. For emergencies, call us directly.
Schedule Online in 60 Seconds
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.