The Best A/C Relay of 2025 – Reviewed and Top Rated
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- 【Sealed Housing】: The high-quality plastic material makes the housing excellent sealing and waterproof, which makes it well protected from the impact of dust, water and dirt. With the sealed housing, it will not malfunction easily even when working in a damp environment.
- 【Stable Connection】: The built-in pure copper sufficient coil and the silver alloy contacts have excellent electrical conductivity, and they work together to ensure a stable connection between the relay and the power supply to maintain the normal operation of the circuit.
- 【Excellent Performance】: This AC relay has a rated voltage of 12v and a maximum load current of up to 25A for stable operation. It maintains fast response and low energy consumption even under high voltage and high temperature circuit environments.
- 【Compact & Portable】: Measuring 0.87 x 0.57 x 1.07 inches, this relay has a compact design and is very easy to carry around and can be placed in your tool box without taking up much space. This relay will come in handy when the relay in your engine system fails.
- 【Application Scope】: The model number of this relay is G8HL-H71-12VDC. It is widely used in electric cooling fans, electric fuel pumps, headlights, electric water pumps, horns and so on. It is a practical assembly for automotive illumination system, air conditioning system, etc.
- 【Easy to Carry & Install】: The size is 0.87×0.57×1.07 inches. The compact design is very convenient to carry and can be placed in the tool box without taking up much space. It is suitable for ordinary cars and is simple to operate. You only need to connect the relay with wires, no other tools are needed, making it easy for you to use and replace, so that your parts can work properly.
- 【Wide Compatibility】: The model number of this relay is G8HL-H71-12VDC. Its part numbers are 39794-SDA-A03, 39794-SDA-A05, G8HL-H71 and 1R191. Suitable for air conditioning compressor fan motor, starter, headlight, horn, ignition, fog light, headlight, fan, rear window defroster, blower motor, trunk lighting, driving lights, oxygen sensor relay, fuel Pump/circuit breaker etc.
- 【Main Function】: Automotive relays control the current of high-voltage lines by controlling the current of low-voltage lines and play the role of current switches. Its main function in automobiles is to start the motor to rotate by making the small current control the large current, thereby driving the magneto rotor inside the generator to rotate.
- 【Reliable Quality】: The shell is made of high-quality plastic, and the base is sealed and waterproof, difficult to short circuit. Silver alloy contacts, the surface is not easily oxidized, and has good electrical and thermal conductivity. Equipped with a full copper electromagnetic coil, the temperature rise is lower and the suction power is stronger. It can withstand larger currents and has more stable working performance.
- 【High Performance】: The benefits of alternating-current relays are significant in the automotive industry. The control and protection of circuits can be well realized with the use of AC relays. AC relays can withstand high voltage and high temperature environments, while also offering fast response and low power consumption.
- 【Compatible Range】: Its part numbers are 39794-SDA-A03, 39794-SDA-A05, G8HL-H71 and 1R191. It is suitable for some specific vehicles, please check the description page for the specific model and year. It is widely used in various parts of cars, such as headlight, horn, ignition, fog light, rear window defroster, etc.
- 【Practical Function】: As a current switch, the relay controls the current of the high voltage line by controlling the current of the low voltage line. It is mainly used in automobiles to start the motor rotation by controlling the high current through small current, thus driving the magneto rotor inside the generator to rotate.
- 【Protecting Circuit】: The use of AC relay can well realize the control and protection of vehicle circuits, which has obvious effects on the automobile. It can withstand high voltage and high temperature environments, and it also features fast response and low power consumption.
- 【Safe & Reliable】: Plastic shell is sturdy and durable, the base is sealed and waterproof, not easy to short circuit. Silver alloy contacts have good electrical and thermal conductivity. All-copper solenoid coil has lower temperature rise, which can bear larger current and has more stable working performance.
- 【Use】: The model of this relay is G8HL-H71-12VDC. It is widely applied in electric cooling fans, electric fuel pumps, headlights, electric water pumps, horns, etc. It is a practical component for automotive lighting systems, air conditioning systems, etc.
- Function: this 4 pin AC compressor relay is designed to fix your vehicle AC issues for selected toyotas, lexus and scions, try replacing this relay first before you listen to other advice and buy a bunch of parts that don't fix your problem
- OEM manufacturer part number: 90987-02028, 90080-87026, 90987-02022, 1567003220, 9008087026, 9098702020, 9098702022, 9098702027
- Multiple purpose: This AC relay can be used on your vehicle lights, compressors, starters, fans, air conditioners and many other parts, usually you may need use several of this relay on your vehicles
- Easy to Install: this relay is designed to be easy to install; it features a plug-and-play design, making it simple to connect to your vehicle's electrical system
- Package includes 4 pcs of 4 pin AC relays
- [Reliable Quality] The black shell is made of nylon material, which is electrical insulation, and the pin is made of brass, which can withstand cold and hot condition. Very durable and sturdy in use, no deformation and rust, perfectly made for long-term use.
- [Specification] The size is 1.41 x 0.94 x 0.63 inch/ 3.6 x 2.4 x 1.6 cm approximately. Our 30A 12V relay can be used to control the circuits of components with high amperage loads on vehicle, such as headlights, fuel pumps and cooling fans.
- [Easy to Use] Our motor relayis suitable for normal antomobile to use, simple operation, you only need to connect the relay and wire, no need other tools, very convenient and easy to use and replace, allow components work normally.
- [Application] Our product can be applied to car tail light, engine compartment, electric cooling fans, electric water pumps, electric fuel pumps, shaved door handles solenoids, trunk solenoids and more equipment.
- [Customer Service] You will receive 4 pieces 12V 30A 5 pin relays. We offer 12-month warranty for every order, you can buy with confidence. If you have any questions and concerns, please feel free to let us know, our team will respond asap!
Last update on 2025-07-06 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API
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FAQ:
Q: What are the symptoms of a bad AC relay?
A: No cold air. Another symptom that the AC relay has potentially failed is that there will be no cold air at all from the AC. If the relay fails, the compressor will not operate and the AC system will be unable to produce any cold air at all.
Q: What does an AC relay do?
A: The air conditioner (A/C) relay, is a relay used to send electrical power to the air conditioning compressor, and air conditioning compressor clutch when the system is turned on. It operates just like any other relay, and is often controlled by a button labeled ‘A/C’.
Q: What does the a/C compressor clutch relay do?
A: The air conditioning clutch relay transfers power , like a switch, from the interior A/C controls of an automobile to the A/C compressor, engaging the compressor clutch. Checking an A/C clutch relay is a process of eliminating possible connection failures . While performing the checks, do not leave the relay bypassed for any length of time because the A/C compressor is designed to cycle off and on, running continuously.
Q: Which is the a/C CLUTCH relay?
A: Electromechanical A/C Clutch Relay. Electromechanical relays are circuit protection and control devices used by the PCM and other sensitive circuits. They use an electromagnet (coil) that controls an arm that swings between two contacts.