Certified Rinnai Water Heater Installation in New Jersey
Certified Rinnai Sales, Service, Maintenance & Installation in Morris County, Essex County & Bergen County, NJ
Doctor Water Heater proudly serves as New Jersey’s trusted Rinnai water heater specialists—installing, repairing, and maintaining the full lineup of Rinnai tankless water heaters and high-efficiency home heating solutions. Based in Denville, NJ, we deliver certified Rinnai service throughout Morris County, Essex County, Bergen County, and all surrounding communities.
We support homeowners in Denville, Mountain Lakes, Rockaway, Morris Plains, Morristown, Livingston, Roseland, Fairfield, North Caldwell, West Caldwell, Montclair, Cedar Grove, Parsippany, and nearby towns—providing fast, reliable service for every Rinnai system.
Rinnai is one of the world’s most trusted names in tankless water heating, known for exceptional reliability, energy efficiency, and long service life. As certified Rinnai technicians, we ensure every installation, repair, and maintenance visit meets manufacturer standards for performance, safety, and warranty protection.
Rinnai Water Heater Solutions We Offer
Rinnai Tankless Water Heaters (Super High-Efficiency & High-Efficiency Series)
Rinnai’s tankless lineup provides endless hot water, remarkable efficiency, and long-lasting performance. Popular models include:
SUPER HIGH-EFFICIENCY MODELS (SE & SE+ Series):
- Rinnai RU Series (RU130, RU160, RU199)
- Rinnai RUR Series (recirculation models for instant hot water)
- Rinnai Sensei™ SE+ Series
HIGH-EFFICIENCY MODELS (HE Series):
- Rinnai V Series (V65, V75, V94)
- Ideal for small and mid-sized New Jersey homes
These systems offer:
- Endless hot water
- Reduced utility bills
- Space-saving, wall-mounted design
- Condensing and non-condensing options
Perfect for New Jersey households looking to upgrade from inefficient tank systems.
Rinnai Commercial Tankless Water Heaters
Ideal for restaurants, apartment buildings, fitness centers, office properties, and industrial facilities.
We install and maintain:
- C-Series Commercial Tankless
- Demand Duo® Hybrid Systems
- Rack Systems for high-volume hot water
Doctor Water Heater handles everything from small business installations to large-scale commercial hot water configurations.
Certified Rinnai Installation, Repair & Maintenance in New Jersey
Choosing a certified Rinnai expert ensures your system is installed correctly, sized appropriately, and protected under the manufacturer warranty. At Doctor Water Heater, you receive:
Certified Rinnai Expertise
Our technicians undergo factory-authorized Rinnai training so your system operates safely and efficiently.
Rinnai Sales, Service & Repairs
We provide complete support, including:
- Rinnai tankless water heater installation
- Rinnai tankless repair
- Descaling & annual maintenance
- Water quality inspection
- Recirculation system maintenance
- Heat exchanger cleaning
- Warranty-safe diagnostics
- Safety inspections & code compliance
Same-Day Service Available
We understand hot water is essential. When available, we offer same-day Rinnai repair throughout North Jersey.
Accurate System Recommendations
Every home has different hot water demands. We assess:
- Usage patterns
- Natural gas/propane supply
- Venting types
- Recirculation needs
- Space requirements
This ensures you get the right Rinnai tankless unit—never an oversized or overpriced system.
Warranty-Safe Installations
We manage:
- Proper venting
- Gas sizing
- Condensate drainage
- Recirculation loop setup
- Expansion tank requirements
- T&P valve compliance
- All New Jersey plumbing & mechanical codes
We Also Service Other Major Water Heater Brands
Doctor Water Heater is a full-service water heater specialist certified to install and repair:
Why New Jersey Homeowners Choose Doctor Water Heater
Homeowners across Morris, Essex & Bergen County rely on us because we offer:
- Certified Rinnai installation & repairs
- True New Jersey expertise
- Upfront, honest pricing
- Fast response times
- Long-term support and maintenance
- Recommendations based on your home, not the most expensive model
When you need a Rinnai installer near you, Doctor Water Heater is the trusted local expert.
Contact Us
Have a Question?
Get In Touch!
Upgrade your home with a certified Rinnai tankless system—or schedule repair or maintenance today.
- (800) 275-8433
- Denville, NJ 07834