Looking for the best heavy-duty fan relays? We’ve compiled a list of top-rated options to help you find the perfect relay for your HVAC or automotive needs.
Heavy-duty fan relays are the unsung heroes of HVAC and automotive systems. They ensure your fans, blowers, and cooling systems run smoothly and efficiently. Whether you’re fixing an AC or upgrading a car’s cooling, the right relay makes all the difference.
Choosing the best heavy-duty fan relay can save you time, money, and frustration. From 24V AC models for HVAC to 12V DC kits for cars, we’ve got you covered. Our guide highlights top-rated options with features like waterproof designs, universal brackets, and easy installation.
Ready to find the perfect relay for your needs? Let’s dive in and explore the best heavy-duty fan relays on the market today.
List of Top 10 Heavy Duty Fan Relays
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APFR-380 90-980 24V AC Heavy-Duty Fan Relay – Single Pole SPST – Isolated AC Switch for HVAC blowers, humidifiers, Goodman blowers, Heat sequencers – Includes Universal Bracket (1) |
This heavy-duty fan relay is perfect for homeowners and HVAC professionals who need a reliable switch for HVAC blowers, humidifiers, or heat sequencers. It’s easy to install and works great with Goodman blowers. |
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FASTSTORM Electric Fan Relay Kit 12V 60 AMP Electric Radiator Cooling Waterproof Fan Relay Kit with Thermostat Control Switch 185 On 175 Off Upgrade |
This FASTSTORM Electric Fan Relay Kit is perfect for car, truck, and boat owners looking to upgrade their cooling system. It’s ideal for anyone needing reliable and precise temperature control for their electric cooling fans. |
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APFR-380 90-980 24V AC Heavy-Duty Fan Relay – Single Pole SPST – Isolated AC Switch for HVAC blowers, humidifiers, Goodman blowers, Heat sequencers – Includes Universal Bracket(2 Pack) (2) |
This 2-pack of APFR-380 90-980 24V AC Heavy-Duty Fan Relays is perfect for HVAC technicians and DIY enthusiasts who need a reliable, isolated AC switch for HVAC blowers, humidifiers, and heat sequencers. If you’re working on Goodman blowers or any system requiring a single pole SPST relay, this is your go-to solution for durable performance. |
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White Rodgers 90-370 Fan Relay Rbm Type 184 Heavy-duty Enclosed |
The White Rodgers 90-370 Fan Relay is perfect for homeowners and HVAC professionals who need a reliable, heavy-duty solution for their heating and cooling systems. Its compact design and easy installation make it ideal for anyone looking to upgrade or replace their fan relay. |
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APFR-360 90-360 24V AC Heavy-Duty Fan Relay – Single Pole SPST – Isolated AC Switch for HVAC blowers, humidifiers, Goodman blowers, Heat sequencers – Includes Universal Bracket(1 Pack) (1) |
This heavy-duty fan relay is perfect for HVAC professionals and DIY enthusiasts looking for a reliable AC switch for their blowers, humidifiers, and heat sequencers. It’s designed for easy installation with a universal bracket, making it a great choice for Goodman blowers and other applications. |
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Electric Cooling Fan Wire Harness Kit 185 Degree On 165 Thermostat Switch 40/50 AMP Relay |
This Electric Cooling Fan Wire Harness Kit is perfect for anyone who wants to keep their engine cool and running smoothly. It’s great for car, truck, or racing fans using 12-volt electric cooling systems. |
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HUAREW APFR-360 90-360 24V AC Fan Relay, Heavy Duty Fan Relay AC Switch SPST with Universal Bracket for Goodman, HVAC Furnace Blower, Humidifier Blower, Heat Sequencer |
This heavy-duty fan relay is perfect for HVAC technicians and DIY enthusiasts who need a reliable replacement for their furnace or humidifier blower motor. It’s designed for easy installation and offers versatile use across various climate control systems. |
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APFR-290 90-290 24V AC Heavy-Duty Fan Relay – Single Pole SPST – Isolated AC Switch for HVAC blowers, humidifiers, Goodman blowers, Heat sequencers – Includes Universal Bracket(1 Pack) (1) |
The APFR-290 90-290 24V AC Heavy-Duty Fan Relay is perfect for homeowners and HVAC professionals who need a reliable switch for HVAC blowers, humidifiers, or Goodman blowers. It’s easy to install and includes a universal bracket for quick setup. |
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90-380 Heavy Duty Fan Relay Replacement For Emerson 24 VAC |
This 90-380 Heavy Duty Fan Relay is perfect for anyone needing a reliable replacement for their air conditioning system. It’s easy to install and works great for heating, cooling, or ventilation needs. |
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Hamolar 3 Pack 80/60 AMP 12V DC Waterproof Car Relay and Harness – Heavy Duty 12 AWG Copper Wires, 5-PIN SPDT Automotive Relays Kit |
This Hamolar 3 Pack 80/60 AMP 12V DC Waterproof Car Relay and Harness is perfect for car enthusiasts and DIYers who need reliable, heavy-duty relays for their projects. It’s also great for professionals working in complex environments where waterproof and dustproof features are a must. |
Detailed Reviews
Discover the top 10 Heavy Duty Fan Relays handpicked for reliability and performance. Whether you need a 24V AC or 12V DC solution, this guide highlights the best options for HVAC, automotive, and more. Find the perfect fit to keep your systems running smoothly and efficiently.
1. APFR-380 90-980 24V AC Heavy-Duty Fan Relay – Single Pole SPST – Isolated AC Switch for HVAC blowers, humidifiers, Goodman blowers, Heat sequencers – Includes Universal Bracket (1)

Meet the APFR-380 90-980, a heavy-duty fan relay built for tough jobs. This single pole SPST switch is designed to be a reliable isolated AC switch for your HVAC needs.
It’s perfect for controlling HVAC blowers, humidifiers, and Goodman blowers. This relay also works with heat sequencers, making it a versatile part for many systems.
It’s from LVACODV. The model number is APFR-380. It includes a universal bracket.
| Pros | Cons |
|---|---|
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Perfect For:
This heavy-duty fan relay is perfect for homeowners and HVAC professionals who need a reliable switch for HVAC blowers, humidifiers, or heat sequencers. It’s easy to install and works great with Goodman blowers.
Ready to Purchase?
2. FASTSTORM Electric Fan Relay Kit 12V 60 AMP Electric Radiator Cooling Waterproof Fan Relay Kit with Thermostat Control Switch 185 On 175 Off Upgrade

The FASTSTORM Electric Fan Relay Kit keeps your engine cool and running smoothly. It works with 12V systems and handles up to 60 amps. Perfect for cars, trucks, and boats.
This kit includes a thermostat switch that turns the fan on at 185°F and off at 175°F. It prevents overheating and saves energy. Easy to install with clear instructions.
The waterproof design ensures it works in all weather conditions. Durable parts mean it lasts long. Ideal for single fan setups.
| Pros | Cons |
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Perfect For:
This FASTSTORM Electric Fan Relay Kit is perfect for car, truck, and boat owners looking to upgrade their cooling system. It’s ideal for anyone needing reliable and precise temperature control for their electric cooling fans.
Ready to Purchase?
3. APFR-380 90-980 24V AC Heavy-Duty Fan Relay – Single Pole SPST – Isolated AC Switch for HVAC blowers, humidifiers, Goodman blowers, Heat sequencers – Includes Universal Bracket(2 Pack) (2)

This APFR-380 90-980 fan relay is built for heavy-duty use. It’s a single pole SPST switch. This relay is perfect for your HVAC systems.
It works with Goodman blowers and heat sequencers. It also handles humidifiers. The package includes a universal bracket for easy installation.
You get a pack of two relays. This is a reliable replacement part.
| Pros | Cons |
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Perfect For:
This 2-pack of APFR-380 90-980 24V AC Heavy-Duty Fan Relays is perfect for HVAC technicians and DIY enthusiasts who need a reliable, isolated AC switch for HVAC blowers, humidifiers, and heat sequencers. If you’re working on Goodman blowers or any system requiring a single pole SPST relay, this is your go-to solution for durable performance.
Ready to Purchase?
4. White Rodgers 90-370 Fan Relay Rbm Type 184 Heavy-duty Enclosed

This is a White Rodgers 90-370 Fan Relay. It’s a heavy-duty part. It’s made by Emerson.
This relay is designed for reliable performance. It’s a great choice for your needs.
| Pros | Cons |
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Perfect For:
The White Rodgers 90-370 Fan Relay is perfect for homeowners and HVAC professionals who need a reliable, heavy-duty solution for their heating and cooling systems. Its compact design and easy installation make it ideal for anyone looking to upgrade or replace their fan relay.
Ready to Purchase?
5. APFR-360 90-360 24V AC Heavy-Duty Fan Relay – Single Pole SPST – Isolated AC Switch for HVAC blowers, humidifiers, Goodman blowers, Heat sequencers – Includes Universal Bracket(1 Pack) (1)

This APFR-360 fan relay is a heavy-duty AC switch designed for your HVAC system. It’s perfect for controlling blowers, humidifiers, and heat sequencers.
It’s a single pole, SPST switch. It comes with a universal bracket. This pack includes 1 relay.
| Pros | Cons |
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Perfect For:
This heavy-duty fan relay is perfect for HVAC professionals and DIY enthusiasts looking for a reliable AC switch for their blowers, humidifiers, and heat sequencers. It’s designed for easy installation with a universal bracket, making it a great choice for Goodman blowers and other applications.
Ready to Purchase?
6. Electric Cooling Fan Wire Harness Kit 185 Degree On 165 Thermostat Switch 40/50 AMP Relay

This Electric Cooling Fan Wire Harness Kit is perfect for 12-volt systems. It works with multiple fan sizes, from 8 to 16 inches. The kit includes a relay, sending unit, and circuit breaker.
It turns your fan ON at 185 degrees and OFF at 165 degrees. The package comes with clear install instructions for easy setup.
| Pros | Cons |
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Perfect For:
This Electric Cooling Fan Wire Harness Kit is perfect for anyone who wants to keep their engine cool and running smoothly. It’s great for car, truck, or racing fans using 12-volt electric cooling systems.
Ready to Purchase?
7. HUAREW APFR-360 90-360 24V AC Fan Relay, Heavy Duty Fan Relay AC Switch SPST with Universal Bracket for Goodman, HVAC Furnace Blower, Humidifier Blower, Heat Sequencer

Introducing the HUAREW APFR-360 24V AC Fan Relay. This heavy-duty relay is built for reliable performance. It’s a direct replacement for many common models.
This SPST relay offers circuit protection for your systems. It features a 24V AC coil and is rated for 12 FLA at 125 VAC.
Installation is a breeze with four easy-to-use wiring terminals. A clear wiring diagram is printed right on the relay. This versatile relay is perfect for HVAC, refrigeration, and ventilation needs.
| Pros | Cons |
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Perfect For:
This heavy-duty fan relay is perfect for HVAC technicians and DIY enthusiasts who need a reliable replacement for their furnace or humidifier blower motor. It’s designed for easy installation and offers versatile use across various climate control systems.
Ready to Purchase?
8. APFR-290 90-290 24V AC Heavy-Duty Fan Relay – Single Pole SPST – Isolated AC Switch for HVAC blowers, humidifiers, Goodman blowers, Heat sequencers – Includes Universal Bracket(1 Pack) (1)

The APFR-290 is a heavy-duty fan relay designed for 24V AC systems. It’s perfect for HVAC blowers, humidifiers, and Goodman blowers.
This single pole SPST relay includes a universal bracket for easy installation. It measures 3.0 x 2.8 x 1.5 inches and comes in a 1-pack.
The isolated AC switch ensures safe and reliable performance. It’s ideal for heat sequencers and automotive applications. LVACODV is the trusted brand behind this product.
| Pros | Cons |
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Perfect For:
The APFR-290 90-290 24V AC Heavy-Duty Fan Relay is perfect for homeowners and HVAC professionals who need a reliable switch for HVAC blowers, humidifiers, or Goodman blowers. It’s easy to install and includes a universal bracket for quick setup.
Ready to Purchase?
9. 90-380 Heavy Duty Fan Relay Replacement For Emerson 24 VAC

Fix your AC with the 90-380 Heavy Duty Fan Relay. This 24VAC relay is built tough to keep your air conditioner running smoothly.
It’s a direct replacement for many common parts. Easy to install and built to last. Get your cool air back!
| Pros | Cons |
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Perfect For:
This 90-380 Heavy Duty Fan Relay is perfect for anyone needing a reliable replacement for their air conditioning system. It’s easy to install and works great for heating, cooling, or ventilation needs.
Ready to Purchase?
10. Hamolar 3 Pack 80/60 AMP 12V DC Waterproof Car Relay and Harness – Heavy Duty 12 AWG Copper Wires, 5-PIN SPDT Automotive Relays Kit

Power up your projects with the Hamolar 3 Pack 80/60 AMP 12V DC Waterproof Car Relay and Harness. This heavy-duty kit features 12 AWG copper wires for superior performance. Get reliable control for your electrical systems.
These 5-PIN SPDT automotive relays offer an excellent 80A/60A switching capability. Their waterproof and dustproof design makes them perfect for any tough environment. Enjoy long-lasting, stable power.
Each relay is built with high-grade flame retardant materials. This ensures top quality and a long lifespan for your peace of mind.
| Pros | Cons |
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Perfect For:
This Hamolar 3 Pack 80/60 AMP 12V DC Waterproof Car Relay and Harness is perfect for car enthusiasts and DIYers who need reliable, heavy-duty relays for their projects. It’s also great for professionals working in complex environments where waterproof and dustproof features are a must.
Ready to Purchase?
Buying Guide
Heavy-duty fan relays keep your systems running smoothly. They control fans, blowers, and cooling setups in HVAC and cars. Choosing the right one saves time and money.
Factors to Consider When Buying Heavy-Duty Fan Relays:
– Voltage Compatibility: Ensure the relay matches your system’s voltage. 24V AC is common for HVAC, while 12V DC works for cars.
– Amperage Rating: Check the relay’s amp rating. Higher amps handle more power, like 60 AMP for heavy-duty fans.
– Waterproof Design: Look for waterproof relays if used outdoors or in damp areas. They last longer in tough conditions.
– Installation Ease: Choose relays with universal brackets or clear instructions. They make setup quick and simple.
– Durability: Pick relays made with high-grade materials. They ensure long-lasting performance and reliability.
– Switch Type: Decide between SPST (single pole, single throw) or SPDT (single pole, double throw). SPST is common for on/off control.
– Temperature Control: Some relays include thermostat switches. They turn fans on/off at specific temperatures, like 185°F on, 175°F off.
– Brand Reputation: Trust reliable brands like LVACODV, Emerson, or Hamolar. They offer quality and peace of mind.
– Pack Size: Buy single packs or multi-packs based on your needs. Multi-packs save money for multiple projects.
– Application: Match the relay to your system. HVAC relays differ from automotive relays in design and features.