The Upgraded 9815WH In-Wall Heater by ZHONTIN is designed to be a perfect replacement for the broan-nutone 9815WH model, offering a blend of efficiency and aesthetic appeal. This heater is suitable for various spaces including bedrooms, living rooms, and bathrooms, providing a large capacity heating solution at 1500W.

One of the standout features of this heater is its fast heating capability. It can raise the temperature of a well-insulated 120 sq ft room to a comfortable level in less than 10 minutes, thanks to its high-speed fan and efficient nickel chrome heating element. Additionally, it operates at a low noise level of less than 22 decibels, ensuring it doesn't disturb your sleep.

However, some users have reported issues with the product upon delivery. Complaints include receiving units that were previously installed and re-boxed without necessary components like the wall mount metal box. Others noted discrepancies in the color and fit of the thermostat knob compared to product images. There were also instances where the heater required repairs upon arrival due to disconnected wires.

Despite these concerns, ZHONTIN emphasizes user safety and convenience with features like an adjustable thermostat for easy temperature control and a high-temperature safety shut-off device. The company also offers a one-year service support and responsive customer service to address any installation or product-related queries.

In conclusion, while the Upgraded 9815WH In-Wall Heater offers promising features for efficient home heating, potential buyers should be aware of possible quality control issues that could affect their experience.