On-demand Water Heaters - A.J. Perri Skip to content

Heating water for your family is the largest energy user in your home, next to heating & cooling.


Homeowners everywhere are doing what they can to save energy and money by using more energy efficient appliances. Since heating your water is one of the most energy-intensive functions in your home, it only makes sense to look for a more efficient way to do it. So, if you’re interested in reducing the cost of heating water in your home, a on-demand water heater from A.J. Perri may be the best choice to fit your needs.

On-demand systems heat your water “on demand” rather than storing warm water in a tank and releasing it as needed. This means less wasted energy keeping water warm when you’re not around to use it. This also means that there is no need to worry about the tank rusting out and leaving a puddle on the floor. Navien On-demand Water HeatersThe Navien Condensing On-demand Water Heater generates an unlimited amount of hot water at a steady temperature, whenever you need it, for as long as you need it.

  • Endless Hot Water Supply
  • Advanced Eco Navien technology
  • Industry’s highest energy efficiency rating (98%)
  • Leak Detector
  • Air Intake Filter
  • Space Saving
  • Ready Link® Cascade System
  • Optional built-in recirculation system with buffer tank
  • Extended lifecycle utilizing dual stainless steel heat exchangers
  • Advanced remote control – NR-10DU
  • Industry’s best warranty!

High Efficiency and Low Operating Costs

The “Energy Factor” (EF) indicates the energy efficiency of a storage water heater. The higher the EF, the more efficient the water heater. Gas water heaters have an EF between 0.50 and 0.60, with some high-efficiency models around 0.80. On the other hand, Navien on-demand water heaters have an EF rating as high as 0.99.

When considering a on-demand and traditional tank water heater, it’s important to consider how the lower operating costs of a on-demand water heater balance out the higher price. True, on-demand systems tend to cost more initially than traditional water heaters but their efficiency and reliability make them a good choice for long-term savings.

For more on this or any of our other products and services, please contact us. Don’t forget to ask us about our exclusive 100% Satisfaction Guarantee!