On-demand hot water heaters: Instant, tankless hot water for your home


	Serving New England and Upstate New York

Home > for Homeowners


	With on-demand you only heat water when you need it! With old technology hot water tanks you heat and reheat water 24 hours a day: expensive - inefficient - wasteful				"If you are tired of replacing water heaters, an on-demand system is a good choice. Both the longevity of the unit and monthly fuel efficiency save you money." Patrick St. Ledger, Manchester, New Hampshire

Rinnai Continuum


Rinnai 2532W External Wall Mount	Rinnai 2532-FFU Internal Wall Mount

More details:
Installation and venting options

Propane or natural gas
Up to 8.5 gallons per minute. Can handle up to 3 simultaneous uses, such as a shower, dishwasher and washing machine.
Up to 87% efficiency
No pilot light, no indoor combustion
Digital touch control lets you preset water temperature. Add more controls at individual faucets to customize water temp for each use. Great safety feature for kids.
24" height, 14" width, 9" depth
10 year warranty on heat exchanger
Typical payback: Unit pays for itself in 2-3 years
Manufacturer suggested list price plus installation (will vary depending on plumbing and venting options): $1,265 not including installation. See your dealer for details.

Toyotomi

More details:
Installation and venting options

#2 home heating oil; the most cost effective way to heat hot water. Readily taps into existing oil tank.
Direct vent through an external wall or vented into a chimney
Small footprint
6.1 gallons per minute
88% efficiency
State-of-the-art safety features
27.75" height, 12 5/8" width, 22.5" depth
Kerosene unit is mobile home approved
Long lasting stainless steel heat exchanger
Typical payback: Unit pays for itself in 2-3 years
#2 home heating oil unit - Manufacturer suggested list price plus installation (will vary depending on plumbing and venting options): $1,259 not including installation. See your dealer for details.
K-1 kerosene unit - Manufacturer suggested list price plus installation (will vary depending on plumbing and venting options): $1,219 not including installation. See your dealer for details.

This family replaced a failing 40 gallon electric hot water heater with an on-demand Rinnai Continuum propane water heater. They chose the propane model since they already had propane gas service to the house. The Rinnai has an expected life of 15 to 20 years; hot water tanks are expected to last 3 to 6 years.

	On-demand	Electric hot water tank	Quick-recovery oil hot water tank

Cost of unit	$1265	$170	$1300

Installation cost (labor + materials)	$240	$250	$180

Fuel costs for 20 years	$7,644	$14,102	$5,520

Replacement unit & installation cost after 6 years	NA	$445	$1,568

Replacement unit & installation cost after 12 years	NA	$472	$1,662

Total costs for 20 years	$9,149	$15,940	$11,994

Savings after 6 years		$1,298	$907

Savings after 20 years		$6,791	$2,845

Assumptions these calculations are based on

Typical life of on-demand unit - 15-20 years

Turn on faucet
Burner turns on
Water passes over heat exchanger coils
Hot water comes out in less than 1 second

Produces hot water for up to 3 simultaneous uses
Few moving parts to break down
Won't corrode and silt up like a tank heater