Litedeer Homes Mercury Built-In Water Vapor Fireplace Cassette in 40", 50" & 60" Sizes
Free delivery to contiguous U.S. + free 30-day returns. Est. arrival: Mar 29–8
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Description
Description
Larger Water Vapor Fireplace Sizes with Smart Controls
The Litedeer Homes Mercury Smart Vapor Fireplace is a built-in indoor water vapor fireplace available in 40-inch, 50-inch, and 60-inch sizes. The Mercury series uses water vapor to create adjustable flames and supports operation by touch panel, remote control, or mobile app.

Who Is This For?
The Mercury is a strong fit for homeowners, designers, and builders who want a longer linear vapor fireplace for a custom indoor project without the limitations of a traditional vented fireplace. It is especially well suited for modern media walls, feature walls, and custom built-ins where a front-facing, corner, or bay-style installation is part of the design plan. It is also a compelling option for shoppers looking for a larger-format alternative to discontinued 40-inch vapor cassette models.
Designed for Custom Fireplace Projects
The Mercury series supports multiple installation views, including front, left corner, right corner, and bay. It can be installed into custom framing and is designed for indoor use. Because it uses water vapor instead of real combustion, it does not require a traditional vent system.
Adjustable Flame Presentation and Easy Control
The flame height is adjustable from 8 to 12 inches, and flame color and intensity can also be adjusted. Controls include the onboard touch screen, included remote, and mobile app. The manual also lists dry port contact support for integration with compatible automation systems.
Water System and Runtime
The Mercury offers up to 20 hours of operation on its internal water system, or unlimited operation when connected to direct plumbing with the optional kit. The manual instructs users to add distilled water to the water tank. Water shortage protection is included, and the unit also has a drainage function.
Additional Features
The Mercury includes UV-C lighting for the water vapor system, automatic water shortage protection, and low operating noise of approximately 45 dB. It is rated for 120V power and supports both plug-in and hardwired installation depending on the project requirements. Custom sizes such as 70-inch, 80-inch, and 100-inch may be available by special order through Modern Blaze with an estimated 5–8 week lead time.

















