Marvair 70005 Limit Switch

The Marvair 70005 Limit Switch is a high-reliability, L165F fixed-temperature safety control engineered to protect HVAC equipment from critical thermal overload. This direct replacement for Marvair 7005 is a temperature-sensitive, snap-action switch that activates at a preset threshold of 165°F. Designed with a rugged, secondary-safety focus, the 70005 monitors air handlers and furnace temperatures to prevent compressor and motor damage. As a genuine OEM replacement part, this manual or automatic reset limit device ensures the electrical circuit is broken when heat exceeds safe operating parameters, maintaining system integrity in residential and commercial wall-mount units. HVAC technicians prefer the Marvair 70005 for its consistent calibration and industrial-grade construction, providing dependable high-limit protection in high-cycle environments. This lightweight, .04 lb component is a critical factor in maintaining HVAC safety compliance and preventing premature part failure across various Marvair configurations.

Key Benefits

• Precise Thermal Protection: Factory-set 165°F (L165F) opening temperature prevents overheating of heat exchangers and coils.
• OEM Compatibility: Specifically engineered as the verified Marvair 7005 replacement for seamless fitment in existing control loops.
• Snap-Action Reliability: High-quality internal contacts provide a fast respond time for electrical cutoff, minimizing equipment strain.
• Durable Construction: Built to withstand the vibrating and high-heat environments typical of industrial HVAC and wall-mount air conditioning systems.

Common Questions

Is the 70005 compatible with older 7005 models?
Yes, the 70005 is the direct OEM replacement for the legacy 7005 limit switch, utilizing the same mounting footprint and electrical specifications.

What happens if the 165°F threshold is reached?
The switch will open the electrical circuit, shutting down the heating or cooling source to prevent structural or mechanical damage to the unit.

Can this limit switch be used in other HVAC brands?
While the 70005 is a Marvair specified part, it is used in various applications where an L165F limit device is required. Always verify your specific model's wiring diagram for compatibility.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.