Resideo - Honeywell Home L4081A1023 Aquastat Controller

The Aquastat Controller from Resideo—Honeywell Home, model L4081A1023, is built for gas/oil-fired hydronic heating systems. This immersion-type control delivers precise high and low temperature limits to protect boilers, minimize energy waste, and extend equipment life.

Key specs and features include:

• Type: Horizontal immersion, multiple, high/low limit
• Temperature control: High limit 130–240°F; Low limit 110–220°F; Differential 10°F fixed (high) and 10–25°F adjustable (low)
• Electrical ratings: SPST contact; 8 A at 120 VAC / 5.1 A at 240 VAC (full load); 0.25 A at 0.25–12 VDC; 360 VA transformer load
• Mounting & connections: 1/2" conduit; Well spud size 3/4" 14-thread; Well-mounted (200 psi) and direct immersion (100 psi)
• Application: Gas/oil fired hydronic heating systems; Humidity 0–95% RH non-condensing
• Dimensions: 4-1/8" W x 2-3/4" D x 3-7/8" H
• Approvals: UL, CSA

Choose this Aquastat Controller for dependable boiler protection and precise temperature control in modern heating setups.