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Browse ProductsCARRIER Freeze Thermostat (OEM Freeze Stat) HH18HB031
$71.37
-
- Free shipping — most items ship by the next day
Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.
Licensed HVAC technician required. Must be installed by a certified professional. Improper installation voids the manufacturer warranty.
- Free shipping — most items ship by the next day
$71.37
-
- Free shipping — most items ship by the next day
CARRIER Freeze Thermostat (OEM Freeze Stat) HH18HB031
Protect your HVAC system from costly freeze damage with the genuine Carrier HH18HB031 Freeze Thermostat. This OEM SPST (Single-Pole, Single-Throw) temperature safety switch is specifically designed for reliable freeze protection in Carrier air handlers, rooftop units, and other HVAC equipment.
Key Features
- Precise Temperature Control: Opens at approximately 30°F to shut down the system and prevent freezing; closes at approximately 45°F to allow normal operation to resume.
- SPST Normally Closed Design: Simple, reliable switch configuration for integration into control circuits.
- Durable OEM Construction: Manufactured to exact Carrier specifications for perfect fit and long-term performance.
- Compact and Easy to Install: Direct replacement part for quick field service.
- Proven Reliability: Trusted in commercial and residential HVAC applications to safeguard evaporator coils and prevent ice buildup.
Benefits
- Prevents Expensive Damage: Automatically protects coils, pipes, and heat exchangers from freezing and bursting in cold conditions.
- Enhances System Safety & Uptime: Reduces the risk of major repairs, water damage, and unexpected downtime.
- Energy Efficiency & Peace of Mind: Ensures your HVAC system operates safely in varying temperatures without constant manual monitoring.
- Genuine Carrier Quality: Backed by Carrier’s reputation for reliability, ensuring optimum system performance and compatibility.
Ideal for HVAC technicians, contractors, and facility managers maintaining Carrier equipment. Keep your system protected with this essential safety component.
Genuine OEM parts
Easy online ordering
30-day hassle-free returns
Help when you need it
What buyers are saying
Verified reviews from customers who purchased this product.
The Carrier Freeze Thermostat HH18HB031 is a game-changer, keeping my system running smoothly even in extreme conditions! The price is unbeatable for such reliable equipment, ensuring top-notch performance and peace of mind
The Carrier Freeze Thermostat HH18HB031 is a game-changer with its unbeatable price and stellar performance! It exceeded my expectations by maintaining perfect temperature control, making it an essential upgrade for any system—highly recommend!
The CARRIER FREEZE THERMOSTAT HH18HB031 exceeded my expectations with its superb performance and reliability. The price is unbeatable, making it an essential addition to any HVAC system!






