Choosing the right relay for your air conditioner is essential for efficient operation and long-lasting performance. This article highlights top-quality air conditioner relays designed for various HVAC systems, compressors, and motors. Below is a summary table of five selected relays known for their durability, compatibility, and power handling capabilities.
| Product | Brand | Key Features |
|---|---|---|
| Dreyoo 24V Coil 40A 2 Pole Air Conditioner Contactor | Dreyoo | 40A capacity, UL certified, vibration-proof terminals, wide temperature range |
| Zlirfy 2 Pack 12V Relay, 4 Pin Car Relays | Qziulr | High-quality material, easy installation, suitable for automotive A/C relays |
| SPP6 Relay/Capacitor Hard Start Kit for Air Conditioner | Seentech | 500% increased starting torque, compatible with various compressor models |
| SPP6 Hard Start Capacitor Replacement Kit by AMI PARTS | AMI PARTS | Boosts compressor starting torque, solid-state relay, easy wiring |
| Dreyoo 24V Coil 1 Pole Air Conditioner Contactor (30A) | Dreyoo | 30A capacity, IP65 rated, UL certified, vibration-proof terminals |
Content Navigation
- Dreyoo 24V Coil 40A 2 Pole Air Conditioner Contactor
- Zlirfy 2 Pack 12V Relay, 4 Pin Car Relays for Air Conditioner
- SPP6 Relay/Capacitor Hard Start Kit with Increased Starting Torque
- SPP6 Hard Start Capacitor Replacement Kit by AMI PARTS
- Dreyoo 24V Coil 1 Pole Air Conditioner Contactor (30A)
- Buying Guide for Air Conditioner Relays
Dreyoo 24V Coil 40A 2 Pole Air Conditioner Contactor
The Dreyoo 24V Coil 40A 2 Pole Air Conditioner Contactor is engineered to deliver reliable performance in HVAC applications. It features a 24V coil with 2 poles providing a full load amperage of 40A and resistive load capacity of 50A, certified to UL508 standards. With a hermetically sealed coil, this relay prevents moisture ingress, enhancing longevity in humid environments. Silver oxide contacts maintain less than 5mΩ resistance, reducing voltage drop for efficient power delivery.
Durability is ensured through an optimized design that includes dust and water resistance alongside vibration-proof terminals. The coil insulation is Class B rated to a thermal limit of 130°C and withstands over 100,000 operational cycles. Temperature tolerance ranges from -40°F to 221°F, making it ideal for rooftop air conditioning units and industrial refrigeration systems. Compatible with systems using split-phase 24-48VAC (50/60Hz) and rated for up to 600VAC/10HP motor loads, it also fits models like Mars 17421 and Siemens 45GG20AJ.
Zlirfy 2 Pack 12V Relay, 4 Pin Car Relays for Air Conditioner
The Zlirfy 12V 4-pin relay pack is designed specifically for automotive air conditioning systems and other car accessories. Constructed with high-quality materials, these relays withstand extreme temperatures and resist rust and deformation, ensuring long-term reliability. Their robust design makes them a suitable replacement for OEM parts such as 90987-02028 and 90080-87026.
Intended for AC starter relay applications, these relays help restore proper compressor function when symptoms like single-speed operation or failure to blow cold air occur. Installation is straightforward without needing specialized tools, making them an accessible option for both professionals and DIY users. Their multi-purpose design supports various vehicle electrical systems and accessories.
SPP6 Relay/Capacitor Hard Start Kit with Increased Starting Torque
The SPP6 Hard Start Kit by Seentech significantly boosts compressor startup with a 500% increase in starting torque. It is compatible with a broad range of HVAC compressors, from small 4000 BTU window units to large 120,000 BTU commercial systems. This versatility ensures it fits many air conditioning setups requiring enhanced compressor starting capability.
Manufactured using premium materials and extensively tested, the kit ensures long-lasting and consistent performance. It acts as a capacitor and relay combination that helps reduce compressor wear and prevents compressor burnout from repeated hard starts. Replacement part numbers it covers include TJ90HS6, AP4502872, and several others, making it a reliable option for many brands and models.
SPP6 Hard Start Capacitor Replacement Kit by AMI PARTS
The AMI PARTS SPP6 Hard Start Capacitor Replacement Kit is engineered to revive stuck compressors by increasing starting torque by up to 500%. This kit simplifies installation with no loose parts or complicated wiring—it connects directly across the run capacitor.
It replaces common part numbers such as SPP6, TJ90HS6, and AP4502872, providing a cost-effective and service-friendly solution to restore your air conditioner’s compressor function. Suitable for units ranging from 4,000 to 120,000 BTU and motors up to 10 HP, this kit improves startup efficiency and can help avoid costly repairs or replacement.
Dreyoo 24V Coil 1 Pole Air Conditioner Contactor (30A)
The Dreyoo 1 Pole 24V Coil Air Conditioner Contactor supports full load amperage up to 30A and resistive loads of 50A, meeting UL508/CSA C22.2 safety standards. Its hermetically sealed coil prevents moisture ingress, making it ideal for humid or outdoor environments. Silver oxide contacts ensure low voltage drops with less than 5mΩ resistance, contributing to energy-efficient operation.
Designed for industrial use, this relay includes IP65 rated dust and water resistance plus vibration-proof terminal construction. It endures extreme temperatures from -40°F to 221°F and humidity levels up to 85%, suited for rooftop HVAC units and refrigeration systems. Compatible with Carrier HK42FZ024, Mars 17421, and Siemens 45GG20AJ among others, it also features copper/aluminum dual-rated lugs and quick-connect terminals to simplify installation.
Buying Guide for Air Conditioner Relays
When selecting the best relay for your air conditioner, consider the following factors to ensure compatibility and reliable performance:
- Voltage and Coil Type: Ensure the relay coil voltage matches your HVAC system controls, commonly 24V for air conditioner contactors or 12V for automotive relays.
- Current Capacity: Verify the full load amperage (FLA) and resistive load capacity to handle the current demands of your air conditioner’s motor or compressor.
- Number of Poles and Contacts: Choose between 1-pole or 2-pole contactors depending on your system wiring requirements and motor type.
- Certification and Standards: Look for UL, CSA, or other relevant certifications to ensure safety and quality compliance.
- Durability and Environmental Ratings: Opt for relays with features like dust and water resistance (e.g., IP65), vibration-proof terminals, and temperature range suitable for your installation conditions.
- Compatibility: Confirm the relay fits your air conditioner’s make and model, matching OEM part numbers or equivalent references for seamless replacement.
- Additional Features: For compressor hard start kits, consider models with enhanced starting torque to reduce compressor wear and improve startup reliability.
- Ease of Installation: Some relays feature quick-connect terminals or simplified wiring, which can save installation time and reduce the need for professional service.
By assessing these aspects, you can choose a relay or hard start kit that enhances your air conditioner’s efficiency, protects its components, and ensures steady cooling performance.