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 style. This heater is suitable for various rooms including bedrooms, living rooms, and bathrooms.

One of the standout features of this heater is its fast heating capability. It can warm up a well-insulated 120 sq ft room to a comfortable temperature in less than 10 minutes, thanks to its 1500W nickel chrome heating element and a silent crossflow fan that operates at less than 22 decibels.

However, some users have reported issues with the product upon delivery. Instances include receiving a pre-installed unit missing essential components like the wall mount metal box, and operational failures right out of the box. Additionally, there have been complaints about the thermostat knob not matching the advertised color and not fitting properly.

Despite these issues, the heater boasts several safety features such as a high-temperature safety shut-off device and a permanently lubricated motor. It also offers an adjustable thermostat for easy temperature control, making it user-friendly for all age groups.

ZHONTIN provides a one-year service support and detailed user manual to assist with installation and troubleshooting. Their customer service team is responsive and aims to resolve any issues within 24 hours.

In conclusion, while the Upgraded 9815WH In-Wall Heater has promising features like efficient heating and aesthetic design, potential buyers should be aware of possible quality control issues upon delivery.