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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
Corrosion Resistance: Non-metallic design eliminates rust issues common in aging condensate management systems
making it versatile for both heating and cooling loops
and the captive cover nut prevents hardware loss during installation
Durable Construction: Rated for high-temperature furnace compartments with a robust plastic housing and reliable electrical contacts
OEM Compatibility: Identical to PRS20031
Venstar VST1100FS Thermostat Refrigerant Corrosion Resistance: Non-metallic design eliminatesThe Venstar VST1100FS is a professional grade, 7 day programmable thermostat engineered specifically for multi stage HVAC systems. As a direct replacement for HH07AT215, this unit offers a seamless retrofit for contractors maintaining older Carrier or standard 24V installations. This 2H 2C heat pump thermostat supports up to 2 stage heating and 2 stage cooling, featuring an intuitive auto changeover function to manage temperature fluctuations without
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