Venstar VST2300FS Prog Thermostat

The Venstar VST2300FS is a professional-grade, 7-day programmable thermostat engineered for 2-heat and 2-cool stages. As the direct field replacement for the 33CS250-FS and P374-1000FM, this unit integrates seamlessly into existing footprints while providing upgraded logic for HVAC energy management. Designed for reliability in demanding environments, it features a backlit display for low-light mechanical rooms and non-volatile memory to retain programming during power cycles. This 2H/2C thermostat supports both gas/electric and heat pump systems, including those with auxiliary heat requirements. The Venstar FlatStat series is favored by contractors for its slim profile and intuitive installation, ensuring compatibility with standard 24VAC systems. By utilizing precise temperature control algorithms, the VST2300FS minimizes cycle swinging, protecting compressor longevity and optimizing airflow delivery across residential and light commercial applications.

• Backward Compatibility: Directly replaces legacy models 33CS250-FS and P374-1000FM without requiring extensive rewiring.
• Multi-Stage Support: Configurable for 2-Heat / 2-Cool systems, providing flexibility for diverse equipment setups.
• Advanced Scheduling: 7-day programming allows for precise setpoint adjustments to maximize system efficiency.
• Security Features: Includes keypad lockout options to prevent unauthorized setpoint tampering in high-traffic areas.
• Dual Power Options: Operates on battery power or 24V hardwire "C-wire" configurations for versatile field installation.

Common Technician Questions

Is the VST2300FS compatible with heat pump systems?
Yes, this unit is designed to handle 2-stage heat pump systems, including those requiring O/B reversing valve terminal energization.

Does this model require a common wire?
While it can run on batteries, we recommend a 24V common wire for continuous backlight operation and optimal performance.

Can I use this to replace a Totalline P374-1000FM?
Yes, the VST2300FS is the designated updated version for that specific model, maintaining consistent terminal designations for easier swaps.

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.