Bosch tankless water heater, uses propane gas or natural gas
Bosch tankless water heater,uses propane gas or natural gas to create low cost hot water
Whenever any tankless water heater is evaluated the two really important factors to consider are Energy Factor and First Hour Rating or actual water flow rates at different temperature increases. The information on this page relates to Bosch tankless natural gas and propane water heaters
Introduction .... review these terms in conjunction with the information on Bosch water heaters outlined below.
hot water heaters energy factors ... explains meaning of this important decision making terms
first hour rating for tankless hot water heaters ... explains meaning of this important decision making terms
Propane or natural gas tankless water heaters, which is better? For general information to help in assessing propane versus natural gas tankless hot water heaters.
The following is general publicly available information on Bosch tankless water heaters ..... Available with pilotless or pilot light, automatic flame failure gas cutoff and safety
interlocked controls.
Copper heat exchanger.
Available in LP or natural gas models (see above)
Units may be connected in parallel in order to double the capacity of a single unit.
Efficient modulating burner automatically adjusts to water flow.
Temperature selection knob allows wide range of continuous flows and temperatures.
Warranty. Residential Units come with a 10 year Heat Exchanger and 2 year on parts.
BENEFITS claimed by Bosch tankless water heaters ...
Save up to 30% on your gas bill, conserve energy and protect the environment, never run out of hot water, save space and have a smart, long term investment that is going to continue to pay off for as long as you burn gas.
With the Bosch Instantaneous Water Heater however, the ONLY time
you burn gas, is when you turn on the hot water tap. Families also love
the fact that they never run out of hot water.
Bosch tankless water heaters come with a name you can depend on and combine unsurpassed quality, reliability and economy to provide the discerning homeowner with the most cost effective and environmentally sound, water heating solutions available.
Bosch tankless water heaters ... models available
| W125-K | WR400-1K | WR400-3K WR400-7K |
WR430-3KVM |
| Now Available in Natural Gas! Small and compact, this unit is available in propane and now in Natural Gas. It is popular in cottages for hot water supply, RV hot water tankless heaters and marine tankless hot water heaters, hot tub water heaters. Bosch products are good for all portable water heater situations such as bush showers, animal grooming water heaters, mobile home hot water heaters and mobile blind cleaning trucks, mobile food service trucks etc. |
Flow controlled, this modulating unit, combines high efficiency with high output, plus minimum flow rate. Output temperature may be preset to any level between 90 degrees F and 140 degrees F. Suitable for single family residential or commercial/industrial, including use as a 180 degree F booster for sanitation systems. The WR400-1K is compatible with all residential appliances and plumbing equipment. Simple to install, no field adjustments necessary. | These new units have all the same advantages as the
WR400-1K plus electronic ignition with no continuous burning pilot flame. They are the only high efficiency water heaters of this type in North America today that will continue to provide hot water during a power failure. WR400-3K(B) is powered by two 'D' cell batteries with a 12-18 month life span with low battery warning light. WR400-7K is powered by a flow activated internal micro hydro generator |
This new unit comes with a built in, Whisper Quiet Power Venter allowing you to reach 15' to an outside wall without special venting materials. Comes with extension terminal complete with anti-backdraft flapper. Also comes with 36" power cable and plug. Suitable for same applications as other WR Bosch models. |
Bosch tankless hot water heater specifications that you can use for comparison purposes
| Important Specifications For Assessment Of Performance | ||||
| Parameter | W125-K | WR400-1K | WR400-3K WR400-7K |
WR430-3KVMl |
| Energy Factor | 0.68 | 0.69 | 0.80 | 0.78 |
| Rated BTU/Hr | 40,000 | 117,000 | 117,000 | 130,000 Nat Gas 125,000 Propane |
| Hot Water Output (depends upon temperature rise) ... galls per minute | ||||
| 45 degrees F rise | 1.3 | 1.0 to 4.0 | 1.0 to 4.0 | 1.0 to 5.0 |
| 90 degrees F rise | 0.66 | 0.5 to 2.1 | 0.5 to 2.1 | 0.5 to 2.5 |
Compare to this data from GAMA .....
| Type | Energy Factor Parameter | Energy Factor |
| Tankless Hot Water Heaters ... natural gas or propane gas | MAX value | 0.85 |
| Tankless Hot Water Heaters ... natural gas or propane (also called LPG) | MIN value | 0.64 |
| Tankless Hot Water Heaters ... natural gas or propane (also called LPG) | AVG all values | 0.75 |
Energy Factor ... every hot water heater tankless or storage tank heater must be provided with a certified Energy Factor. This factor in simple terms means that if the Energy Factor is high then the annual cost of power to run the tanklless hot water heater or the storage heater will be lower than it would be for a low rated Energy Factor. Gas tankless water heaters Energy Factors typically range from 0.64 to 0.82
First Hour Rating ... this number refers to the amount of hot water the heater can supply per hour ... if a storage tank system is in use the assumption is that the tank is full of hot water at the start of the first hour.