
Daikin-McQuay 066540802 Thermostat
Upgrade or restore your HVAC system’s reliability with the Daikin-McQuay 066540802 Thermostat. This 1-stage thermostat is engineered specifically for Daikin and McQuay equipment, providing precise temperature control for a single stage of heating or cooling. As an OEM replacement part, it ensures seamless integration with existing 24V HVAC controls, including heat pumps, air conditioners, and furnaces used in commercial and industrial settings. This digital thermostat features a clear, high-contrast interface designed for immediate identification of system status and setpoints, reducing the diagnostic time for technicians in the field. Built with a rugged thermostat limit-bulb design, the Daikin 066540802 serves as a direct cross-reference for older part numbers such as 02005302, 066540801, and 66540802. Rely on this heavy-duty thermostat for consistent environmental management in demanding PTAC units and high-performance HVAC systems where accuracy is non-negotiable.
Key Benefit
- Broad Compatibility: Directly replaces legacy Daikin-McQuay and Ranco part numbers, ensuring a perfect physical and electrical fit for standard 1-stage configurations.
- Technical Precision: Highly sensitive limit-bulb technology provides responsive HVAC temperature regulation, preventing system short-cycling and optimizing energy efficiency.
- Simplified Installation: Designed with standard terminal markings to streamline the wiring process for contractors on residential or commercial HVAC job sites.
- Durable Construction: Engineered with industrial-grade materials to withstand the frequent cycling common in high-traffic manufacturing plants and healthcare facilities.
Common Question
- Will this thermostat work with multi-stage equipment? No, the 066540802 is specifically a 1-stage thermostat designed for single heating/cooling circuits; verify your system requirements before installation.
- Is this an OEM or aftermarket part? This is a genuine Daikin-McQuay OEM replacement part, ensuring it meets all original factory specifications for performance and safety.
- What part numbers does this model replace? This unit is the current replacement for 02005302, 066540801, and 66540801.
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.
Original: $126.96
-65%$126.96
$44.44Daikin-McQuay 066540802 Thermostat
Upgrade or restore your HVAC system’s reliability with the Daikin-McQuay 066540802 Thermostat. This 1-stage thermostat is engineered specifically for Daikin and McQuay equipment, providing precise temperature control for a single stage of heating or cooling. As an OEM replacement part, it ensures seamless integration with existing 24V HVAC controls, including heat pumps, air conditioners, and furnaces used in commercial and industrial settings. This digital thermostat features a clear, high-contrast interface designed for immediate identification of system status and setpoints, reducing the diagnostic time for technicians in the field. Built with a rugged thermostat limit-bulb design, the Daikin 066540802 serves as a direct cross-reference for older part numbers such as 02005302, 066540801, and 66540802. Rely on this heavy-duty thermostat for consistent environmental management in demanding PTAC units and high-performance HVAC systems where accuracy is non-negotiable.
Key Benefit
- Broad Compatibility: Directly replaces legacy Daikin-McQuay and Ranco part numbers, ensuring a perfect physical and electrical fit for standard 1-stage configurations.
- Technical Precision: Highly sensitive limit-bulb technology provides responsive HVAC temperature regulation, preventing system short-cycling and optimizing energy efficiency.
- Simplified Installation: Designed with standard terminal markings to streamline the wiring process for contractors on residential or commercial HVAC job sites.
- Durable Construction: Engineered with industrial-grade materials to withstand the frequent cycling common in high-traffic manufacturing plants and healthcare facilities.
Common Question
- Will this thermostat work with multi-stage equipment? No, the 066540802 is specifically a 1-stage thermostat designed for single heating/cooling circuits; verify your system requirements before installation.
- Is this an OEM or aftermarket part? This is a genuine Daikin-McQuay OEM replacement part, ensuring it meets all original factory specifications for performance and safety.
- What part numbers does this model replace? This unit is the current replacement for 02005302, 066540801, and 66540801.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Upgrade or restore your HVAC system’s reliability with the Daikin-McQuay 066540802 Thermostat. This 1-stage thermostat is engineered specifically for Daikin and McQuay equipment, providing precise temperature control for a single stage of heating or cooling. As an OEM replacement part, it ensures seamless integration with existing 24V HVAC controls, including heat pumps, air conditioners, and furnaces used in commercial and industrial settings. This digital thermostat features a clear, high-contrast interface designed for immediate identification of system status and setpoints, reducing the diagnostic time for technicians in the field. Built with a rugged thermostat limit-bulb design, the Daikin 066540802 serves as a direct cross-reference for older part numbers such as 02005302, 066540801, and 66540802. Rely on this heavy-duty thermostat for consistent environmental management in demanding PTAC units and high-performance HVAC systems where accuracy is non-negotiable.
Key Benefit
- Broad Compatibility: Directly replaces legacy Daikin-McQuay and Ranco part numbers, ensuring a perfect physical and electrical fit for standard 1-stage configurations.
- Technical Precision: Highly sensitive limit-bulb technology provides responsive HVAC temperature regulation, preventing system short-cycling and optimizing energy efficiency.
- Simplified Installation: Designed with standard terminal markings to streamline the wiring process for contractors on residential or commercial HVAC job sites.
- Durable Construction: Engineered with industrial-grade materials to withstand the frequent cycling common in high-traffic manufacturing plants and healthcare facilities.
Common Question
- Will this thermostat work with multi-stage equipment? No, the 066540802 is specifically a 1-stage thermostat designed for single heating/cooling circuits; verify your system requirements before installation.
- Is this an OEM or aftermarket part? This is a genuine Daikin-McQuay OEM replacement part, ensuring it meets all original factory specifications for performance and safety.
- What part numbers does this model replace? This unit is the current replacement for 02005302, 066540801, and 66540801.
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.












