Qmark 5813-2027-000 Thermostat for LFK404F Heater
An OEM Qmark replacement thermostat used to control room temperature on the Qmark LFK404F commercial fan-forced wall heater when the correct replacement thermostat is required.
Key Features
- OEM replacement thermostat listed as used with LFK404F
- Product type: Thermostat
- Note from the product listing: this thermostat may come with either gold or silver prongs
- Qmark's LFK Series heater is described as having an integral double-pole thermostat with a 40 - 90°F control range (as part of the heater's design)
Compatibility & Applications
- Listed specifically for LFK404F.
- Must only be used where the manufacturer specifies this exact part number: 5813-2027-000.
Installation & Operation Notes
- Installation should be performed by a qualified technician familiar with electric wall heaters.
- Reference the LFK Series instruction manual/service documentation for safe power shutdown and the correct thermostat replacement procedure.
- Follow all applicable electrical safety practices for servicing internal heater controls
Maintenance & Troubleshooting
- This thermostat is typically replaced when a heater will not regulate temperature properly or the control no longer functions as expected.
- Use the heater's service literature to confirm the thermostat is the fault (and not wiring, switch, or safety controls) before replacement.
User Reviews & Q&A Summary
- Review themes commonly describe it as an exact-fit OEM replacement that restores heat immediately after installation.
- Several reviewers mention it working well on older Marley/Qmark wall heaters, with one noting the control knob improvement compared to an older design.
- Frequent purchase experience themes include easy to find, reasonable price, good packaging, and fast delivery.