On-Demand Water Heaters for Commercial Installation Nelson & Small Energy Solutions
Serving New England and Upstate New York
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A 14-unit apartment building replaces a 360,000 BTU boiler and 350 gallon holding tank with two Rinnai on-demand units.
Apartment unit image
Actual benefits:
  • Gas usage reduced by nearly 50%!
  • No tenant complaints
  • Constant, pre-set water temperature
  • No maintenance
  • Takes up less space
  • Provides redundancy
Actual therm usage bar graph
Before Before Before
Before image
A 360,000 BTU boiler
maintained 350 gallons of hot water 24 hours a day, 365 days a year whether it was needed or not.
After image
Two Rinnai Continuum on-demand hot water heaters
  • No storage
  • No energy use when there is no demand
  • Burners modulate from 20,000 to a total of 360,00 BTUs depending on demand.