Resideo - Honeywell Home W8735S1000 Aquastat Controller Wireless Outdoor Reset Module

W8735S1000 Aquastat Controller is a high-performance wireless outdoor reset module from Resideo/Honeywell Home. This Outdoor Reset Kit optimizes boiler efficiency by adjusting water temperature based on outdoor temperatures, delivering comfortable heat and lower energy use.

The kit includes Module #50022037-002 and Outdoor Sensor #C7089u Envi, providing a ready-to-install solution for residential heating systems. With a wireless design, it reduces wiring clutter while maintaining precise control in all weather conditions.

Trust in Resideo/Honeywell Home technology to keep you warmer when you need it and cooler when you don’t, helping you manage energy costs without sacrificing comfort.

• Wireless outdoor reset communication between sensor and module for reliable boiler control
• Includes module 50022037-002 for quick, plug‑in installation
• Outdoor sensor C7089u Envi delivers accurate outdoor temperature readings
• Easy installation with standard boiler systems and compatible hydronic setups
• Improved energy efficiency and seasonal comfort through optimized water temperature
• Durable, weatherproof design for outdoor sensing and long-term reliability