The Upgraded 9815WH In-Wall Heater by ZHONTIN is designed as a perfect replacement for the broan-nutone 9815WH model, offering a blend of efficiency and style. With dimensions fitting most standard wall spaces, this heater promises fast heating capabilities, raising room temperatures in under 10 minutes.

However, user experiences vary. Some customers reported receiving units that were previously installed and re-boxed, missing essential components like the wall mount metal box. Others noted issues with the heater's functionality upon arrival, including non-operational units and disconnected wires.

On the design front, while the heater boasts an aesthetic white grille panel suitable for various rooms, there have been complaints about the thermostat knob not matching the advertised color and fitting poorly on the unit.

Despite these setbacks, ZHONTIN offers a one-year service support and detailed user manual to assist with installation and troubleshooting. Potential buyers should weigh these factors carefully before making a purchase decision.