The two latest pool heater series by Jandy are the Lxi and the Legacy. The Lxi models are all low nox which greatly reduces their emissions. Some Lxi units are equipped with cupro nickel coated heat exchangers on the inside which allows them to tackle heavy duty usage. The Jandy Legacy is available in two different models. One allows for electronic ignition while the other features a millivolt ignition.
The LXI400NN 400K BTU Natural Gas Cupro Nickel Heater is on sale for $1869.