Rinnai Tankless Water Heaters and Condensing Boilers
A.J. LeBlanc Heating installs and services Rinnai tankless water heaters and condensing boilers across Southern New Hampshire. Rinnai's tankless design heats water only on demand, giving you an endless supply of hot water with lower standby losses than a traditional tank.
Rinnai Tankless Water Heaters
Rinnai is a Japanese manufacturer with over a century of gas-appliance engineering behind its tankless water heaters and condensing boilers, and a strong reputation for quality and reliability in both residential and commercial markets. The tankless design heats water on demand through a compact heat exchanger, so you only pay to heat water when you're actually using it, eliminating the standby losses of a traditional storage tank. A.J. LeBlanc Heating handles new Rinnai installs, scheduled maintenance, and repairs throughout Southern New Hampshire.
Full Rinnai Lineup
- Rinnai Tankless Water Heaters
- Rinnai Condensing Gas Water Heaters
- Rinnai Wall-Hung Tankless Units
- Rinnai High-Efficiency Hydronic Systems
- Service, Maintenance & Repair
Southern NH's Trusted Rinnai Installer Since 1928
Authorized Rinnai Dealer
We meet the manufacturer's standards for training, product knowledge, and installation quality, which matters for warranty coverage and long-term performance.
4th Generation, Family-Owned
Same family, same values since 1928. Thousands of Southern NH homeowners have trusted us with their hot water and heating.
Readers' Choice Winners
Voted best HVAC, plumbing, and electrical contractor by Southern NH homeowners year after year.
Installation, Service & Repair
We handle new Rinnai installations, routine maintenance, and repairs on existing systems. One call covers it all.
Ready for a Rinnai Installation?
Call or fill out the form below. A Home Comfort Advisor will review your needs, recommend the right Rinnai model, and provide a written estimate.
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.