Resideo - Honeywell Home HR90 Thermostatic Radiator Controller

HR90 Thermostatic Radiator Controller from Resideo - Honeywell Home is a stand-alone, electronic actuator that delivers precise radiator heating control. The HR90 Thermostatic Radiator Controller makes it easy to regulate room temperature efficiently without a full smart hub.

Designed for indoor use, this IP30-rated polycarbonate unit fits standard radiators with a M30 x 1.5 inch connection. It operates on two 1.5V LR6/AA/AM3/Lithium batteries or two 1.2V NiMH rechargeable cells, ensuring flexible power options for maintenance-free use.

Key specs and inclusions keep installation simple and reliable across HVAC setups:

• Stand-alone electronic actuation for focused radiator control
• M30 x 1.5 inch connection
• Temperature rating 32–122°F; sensor range 40–86°F
• Media handled: steam and hot water radiators
• Enclosure: IP30, durable polycarbonate
• Inclusions: Modern design, screen scale marking, controller, base plate, display holder, battery, screws, adapter

Dimensions are 2.4 x 2.1 x 3.8 inches, providing a compact, unobtrusive footprint that blends with contemporary interiors while delivering precise, responsive temperature control.