Does HOTTAP work at high elevations?

Gas appliances are calibrated to function optimally at sea level. However, as you ascend to higher altitudes, the air becomes thinner, leading to reduced combustion efficiency.

The HOTTAP will still operate at higher elevations, but you may experience longer water heating times or less hot water output. To address this, you can set HOTTAP to the hottest setting (LOW water and HIGH gas) or recirculate the water in a tub to achieve higher temperatures. You can read here to learn how.