Resideo TH5220D1029 Thermostat

The Resideo TH5220D1029 FocusPRO 5000 is a contractor-grade, non-programmable digital thermostat designed for high-reliability applications in both residential and light commercial environments. Engineered for multi-stage HVAC systems, this unit supports up to 2 Heat/2 Cool conventional systems and 2 Heat/1 Cool heat pump systems with auxiliary heat. It features a high-visibility, 5.09 square-inch backlit display, providing technicians and end-users with clear readings of both ambient and setpoint temperatures. For ease of maintenance, the flip-out battery door allows for quick cell replacement without pulling the subbase off the wall. This dual-powered thermostat can operate on 20-30 Vac hardwire power or AA alkaline batteries, offering flexibility for retrofits or new installs. With an accuracy of ?1?F and a built-in compressor protection delay, this Resideo TH5220D1029 ensures stable system cycling and equipment longevity. It is widely utilized as a direct replacement for T874G1055 and HH07AT170 models.

Key Benefits for Contractors:

• Broad System Compatibility: Controls 2H/2C conventional and 2H/1C heat pump equipment, including 750mV millivolt systems.
• Precise Temperature Control: Maintains tight 1-degree differentials to prevent room temperature swings and minimize CPH (Cycles Per Hour) issues.
• Flexible Powering: Dual-power capability lets you choose between 24V hardwiring (C-wire) or standalone battery operation.
• Enhanced Durability: Features heavy-duty relays and built-in 5-minute compressor protection to safeguard equipment against short-cycling.
• Simple Interface: Non-programmable logic eliminates complex scheduling callbacks while providing auto or manual changeover options.

Common Questions & Tech Tips:

Is this thermostat compatible with 2-transformer systems?
Yes. For systems with separate heating and cooling transformers, simply remove the factory-installed R/Rc metal jumper on the terminal block.

What is the difference between the TH5220D1029 and the TH5220D1003?
The TH5220D1029 features the large 5.09 sq. in. display, whereas the 1003 model utilizes the standard smaller screen. Both share identical wiring footprints and terminal designations.

Does it require a C-wire?
No. While it can be hardwired using a Common (C) wire, it is fully operational via AA batteries, making it an ideal choice for 4-wire retrofits where pulling a new cable is not feasible.

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.