Navien on-demand water heaters from the CH-series: CH-180, CH-210, and CH-240 are extra-efficient combination boilers that are designed for potable water and space heating, including the hydronic radiator, radiant floor, baseboard, and air handler heating, utilizing tankless and condensing technology. Check out our review of the best Navien heaters.
The Navien CH-ASME group comprises the three models, which are different in power, flow rate and designed for a variety of applications.
The Eco-friendly gas burner uses the pre-mixed air-gas mixture to produce less CO2 and NOx gases than the conventional type, and thanks to the GARC system, Navien ensures the right air/gas ratio for optimal gas combustion.
The gas burner is modulating, so it can work in the range from the minimum 17,000 BTU to the maximum of 199,000 BTU/hr while the maximum flow rate is 8.4 GPM (at 45 F rise), which is sufficient for medium-size homes and families.
When the Navien CH boiler is used in home space heating, its ASA control system automatically adjusts the temperature if the air temperature inside the room changes.
|Models / Specs||CH-180ASME||CH-210ASME||CH-240ASME|
|Gas input (BTU)||17,000
|Water flow (GPM)
(30 F temp. rise)
|Temp. settings (F)||98-140||98-140||98-140|
|Energy consumption (Watts)||200||200||200|
|Max. vent length (ft)||100||100||100|
According to the features from above, we can see that Navien CH condensing water heaters truly offer cutting-edge technology, which results in the most efficient water and space heating, with great savings and reduction in greenhouses gases.
With the high gas input of around 199,900 BTU, the above tankless units are ideal for installation anywhere in the house, outside, and in applications such as the baseboard, in-floor radiant, and air handler heating. These units can supply enough hot water for almost any house size, while for the high demanding, the cascading system can be applied.
Official site: Navien