Best Hvac Relays: Top Picks for a Reliable Home System

What are the best HVAC relays for your home? We test and review the top options to help you find a reliable match for your system.

HVAC relays are essential for keeping your home comfortable and efficient. They control the power to your heating and cooling systems, ensuring everything runs smoothly.

Choosing the right relay can save you time and money. It also keeps your HVAC system working reliably.

We’ve tested and reviewed the best HVAC relays for you. Discover top picks that fit your needs and budget. Let’s find the perfect match for your system!

List of Top 10 Hvac Relays

Title	Best For	Price
2 Pack 24V Fan Relay AC Switch SPST Fit for Fan Control HVAC Coleman Furnace Blower Humidifier Goodman Blower Heating Sequencer Relay 90-980 Isolation Re-Lay AC Switch SPST	This 2 Pack 24V Fan Relay is perfect for homeowners, HVAC technicians, and DIY enthusiasts who need a reliable and easy-to-install solution for controlling fans, blowers, or heating systems. Its seamless compatibility and user-friendly design make it ideal for anyone looking to upgrade or repair their HVAC setup.	View on Amazon (paid link)
Dreyoo 24V Coil 1 Pole 40A Air Conditioner Contactor HVAC Motor Relay	This Dreyoo 24V Coil 1 Pole 40A Air Conditioner Contactor is perfect for anyone needing a reliable and durable solution for their HVAC systems, industrial refrigeration, or motor control needs. It’s ideal for professionals and DIY enthusiasts alike.	View on Amazon (paid link)
Dreyoo 1 Pack 24V AC Fan Relay, 90-380 HVAC Blower Isolation AC Switch SPST	This 24V AC fan relay is perfect for HVAC professionals and DIY enthusiasts who need a reliable and durable solution for their heating, cooling, or ventilation systems. It’s easy to install and works great for furnaces, blowers, and humidifiers.	View on Amazon (paid link)
90340 – 24 Volt Coil General Relay Also Replaces White Rodgers, Emerson, Supco, Honeywell, Packard, Mars, Jard for HVAC Applications and Other General Electrical installations Replaces APSR-340	This 24 Volt Coil General Relay is perfect for HVAC technicians, electricians, and DIY enthusiasts who need a reliable replacement part for their air conditioning systems, appliances, or general electrical projects. It’s easy to install and works great for controlling fan motors and other electrical applications.	View on Amazon (paid link)
Dreyoo 1 Pcs 24V Coil 40A 2 Pole Air Conditioner Contactor HVAC Contactor	Perfect for HVAC pros. This fits large air conditioners.	View on Amazon (paid link)
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 for Goodman blowers too.	View on Amazon (paid link)
Supco 90370 HVAC/R General Purpose Fan Relay, 12A Load, 24V Coil	The Supco 90370 HVAC/R General Purpose Fan Relay is perfect for anyone needing a reliable way to control a fan. It’s great for HVAC systems or any setup requiring a 24V coil and 12A load.	View on Amazon (paid link)
Supco 90380 HVAC/R General Purpose Fan Relay, 13A Load, 24V Coil	The Supco 90380 HVAC/R General Purpose Fan Relay is perfect for anyone needing a reliable way to control a fan. It’s ideal for HVAC systems or appliances where simple, efficient fan control is key.	View on Amazon (paid link)
Dreyoo 2 Pack 24V AC Fan Relay, 90-380 HVAC Blower Isolation AC Switch SPST	This 24V AC fan relay is perfect for homeowners and HVAC technicians who need a reliable and durable solution for their heating and cooling systems. It’s easy to install and works great for furnaces, air conditioners, and more.	View on Amazon (paid link)
Supco 90340 HVAC/R General Purpose Switching Relay, 24V Control Coil	A HVAC technician and small shop owner find this relay perfect. Users prefer this quick changeover coil for many machine parts.	View on Amazon (paid link)

Detailed Reviews

Discover the top 10 HVAC relays handpicked for reliability and performance. Each product is expert-reviewed and backed by customer feedback, ensuring you get the best value for your needs. Whether you’re upgrading your system or fixing issues, this guide makes finding the perfect relay simple and stress-free.

1. 2 Pack 24V Fan Relay AC Switch SPST Fit for Fan Control HVAC Coleman Furnace Blower Humidifier Goodman Blower Heating Sequencer Relay 90-980 Isolation Re-Lay AC Switch SPST

2 Pack 24V Fan Relay AC Switch SPST Fit for Fan Control HVAC Coleman Furnace Blower Humidifier Goodman Blower Heating Sequencer Relay 90-980 Isolation Re-Lay AC Switch SPST

Keep your home cool. Upgrade your HVAC system. Install this fan relay.

Stop annoying fan issues. Get reliable power control today.

Enjoy quiet air flow. Trust this strong metal part.

Pros	Cons
Seamless compatibility with most HVAC systems and fans. High-quality construction ensures lasting durability and corrosion resistance. User-friendly installation with clear diagram and six terminals. Reliable performance operates quietly, efficiently controlling fan functions.	No smart features, basic relay functionality only. Limited voltage range, works only with 24V systems. Compact design may be hard to handle for larger hands.

Perfect For:

This 2 Pack 24V Fan Relay is perfect for homeowners, HVAC technicians, and DIY enthusiasts who need a reliable and easy-to-install solution for controlling fans, blowers, or heating systems. Its seamless compatibility and user-friendly design make it ideal for anyone looking to upgrade or repair their HVAC setup.

Ready to Purchase?

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2. Dreyoo 24V Coil 1 Pole 40A Air Conditioner Contactor HVAC Motor Relay

The Dreyoo Air Conditioner Contactor is a reliable and durable solution for HVAC systems. It’s engineered for performance, handling 40A full load and 50A resistive load with ease.

It’s built tough, works in extreme temperatures, and fits many systems. Comes with easy installation parts and clear instructions.

Pros	Cons
Built tough for harsh weather and hot temperatures Works with many popular HVAC and elevator models Safe for medical and food processing equipment and systems Comes with all mounting extras and wiring guides Keeps compressors and fans working smoothly for years	Only one pole, limiting heavy three-phase use. Requires careful wiring for safe voltage setup. Single replacement part, no extra backup switches included.

Perfect For:

This Dreyoo 24V Coil 1 Pole 40A Air Conditioner Contactor is perfect for anyone needing a reliable and durable solution for their HVAC systems, industrial refrigeration, or motor control needs. It’s ideal for professionals and DIY enthusiasts alike.

Ready to Purchase?

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3. Dreyoo 1 Pack 24V AC Fan Relay, 90-380 HVAC Blower Isolation AC Switch SPST

This fan relay controls your blower or AC system. It fits many HVAC units like furnaces or heaters. Easy to identify with a clear wiring diagram.
It creates safe isolation for your pump motor and heat sequence. The six terminals make strong connections to wires.
You get a sturdy build that lasts a long time. Order today to keep your heating system running well.

Pros	Cons
24V Fan Relay for wide HVAC use. SPST 6-Terminal Design ensures secure connections. UL Certified for durable, long-lasting performance. Easy to install with clear wiring diagram.	May not fit every old system. No extra wires included in box.

Perfect For:

This 24V AC fan relay is perfect for HVAC professionals and DIY enthusiasts who need a reliable and durable solution for their heating, cooling, or ventilation systems. It’s easy to install and works great for furnaces, blowers, and humidifiers.

Ready to Purchase?

View Price on Amazon (paid link)

4. 90340 – 24 Volt Coil General Relay Also Replaces White Rodgers, Emerson, Supco, Honeywell, Packard, Mars, Jard for HVAC Applications and Other General Electrical installations Replaces APSR-340

90340 - 24 Volt Coil General Relay Also Replaces White Rodgers, Emerson, Supco, Honeywell, Packard, Mars, Jard for HVAC Applications and Other General Electrical installations Replaces APSR-340

The 90340 General Relay is a 24-volt coil part. It replaces many brands like White Rodgers, Honeywell, and more. Use it for HVAC systems and other electrical needs.

This relay works well for fan motors in air handlers. It’s also great for vending machines, appliances, and lighting. Its DPDT design handles power efficiently.

The relay is compact and easy to install. It has 2 sets of power contacts for reliable use. Trust it for long-lasting performance.

Pros	Cons
Replaces multiple brands, saving time and money on repairs. Versatile use for HVAC, appliances, and general electrical needs. Durable design with high contact ratings for reliable performance. Compact size fits easily into tight spaces for hassle-free installation.	Limited to 24V systems, not for higher voltage needs. No advanced features, basic relay for simple tasks. Small size may be hard to handle for some users.

Perfect For:

This 24 Volt Coil General Relay is perfect for HVAC technicians, electricians, and DIY enthusiasts who need a reliable replacement part for their air conditioning systems, appliances, or general electrical projects. It’s easy to install and works great for controlling fan motors and other electrical applications.

Ready to Purchase?

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5. Dreyoo 1 Pcs 24V Coil 40A 2 Pole Air Conditioner Contactor HVAC Contactor

The Dreyoo Air Conditioner Contactor is built tough for reliable performance. It handles 40A full load and 50A resistive load, meeting UL508 standards. Its sealed coil keeps moisture out, ensuring long-lasting use.

This contactor works in extreme conditions, from -40°F to +221°F. It’s dust and water-resistant, with vibration-proof terminals. Perfect for rooftop AC units and industrial refrigeration.

It’s compatible with many systems and includes DIN rail mounts and stainless steel screws. Ideal for hospitals, data centers, and supermarkets. Easy to install and ready for any job.

Pros	Cons
Reliable 24V coil tech ensures stable 40A performance. Durable design resists dust, water, and extreme temps (-40°F to 221°F). Versatile use in HVAC, elevators, and food processing systems. Quick 0.15s response time for precise control.	Voltage may not fit your system. Only works for motors with 10HP or less. Quick screws can be loose.

Perfect For:

Perfect for HVAC pros. This fits large air conditioners.

Ready to Purchase?

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6. 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)

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 unit powers fan motors well. It is a heavy-duty relay. You get true isolation here.

The kit includes a bracket. It fits many units.

Use it for heat sequencers too. A solid choice for work.

Pros	Cons
Strong power for your HVAC blower or humidifier. Fits Goodman blowers and other heat sequencer needs. Includes a handy universal mounting bracket for easy setup. Reliable single-pole switch ensures a solid electrical connection. Works perfectly to control your air conditioning system safely.	No warranty included with this product. Single unit only, no bulk purchase option. Limited compatibility with non-HVAC systems.

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 for Goodman blowers too.

Ready to Purchase?

View Price on Amazon (paid link)

7. Supco 90370 HVAC/R General Purpose Fan Relay, 12A Load, 24V Coil

Supco 90370 controls HVAC signals powerful enough for any system. This relay handles a 12A load with a standard 24V coil. It keeps your fan running perfectly all year.

Choose from versatile contact forms like SPST-NO, SPST-NC, or SPDT. Features a sealed enclosure so it stays safe from water and dust.

This relay provides reliable power for fans big and small. Easy electric signal control makes installation simple for pros.

Pros	Cons
Controls your fan with ease and speed. Sealed case keeps dust and dirt out. Three contact forms give you more choice. 12A load power for strong, tough work. 24V coil fits most home systems.	Low 12 amp load limit. Only works with 24 volt coils. Sealed box traps too much heat.

Perfect For:

The Supco 90370 HVAC/R General Purpose Fan Relay is perfect for anyone needing a reliable way to control a fan. It’s great for HVAC systems or any setup requiring a 24V coil and 12A load.

Ready to Purchase?

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8. Supco 90380 HVAC/R General Purpose Fan Relay, 13A Load, 24V Coil

The Supco 90380 is a reliable fan relay for HVAC/R systems. It controls electric signals for fans. This compact device ensures smooth operation.

With a 13A load capacity and 24V coil, it’s perfect for various applications. The sealed enclosure protects internal components, ensuring longevity.

Its SPST-NO, SPST-NC, and SPDT contact forms provide versatility. This general-purpose relay is an essential component for efficient system control.

Pros	Cons
Controls fan signals with precision and reliability. Sealed enclosure protects against dust and moisture. Versatile contact forms for multiple applications. Handles 13A load with 24V coil efficiency.	Limited to 24V coil, not compatible with all systems. No built-in overload protection for fan motors. Sealed enclosure may restrict custom wiring options.

Perfect For:

The Supco 90380 HVAC/R General Purpose Fan Relay is perfect for anyone needing a reliable way to control a fan. It’s ideal for HVAC systems or appliances where simple, efficient fan control is key.

Ready to Purchase?

View Price on Amazon (paid link)

9. Dreyoo 2 Pack 24V AC Fan Relay, 90-380 HVAC Blower Isolation AC Switch SPST

The Dreyoo 2 Pack 24V AC Fan Relay is a reliable switch for HVAC systems. It works with 24VAC power and handles high currents easily. Use it for blower motors, humidifiers, or AC units.

It has a 6-terminal design for secure connections. The compact layout ensures stable performance. Made with sturdy plastic and pure copper, it lasts long.

Installation is simple with a clear wiring diagram. Check coil voltage and terminals before use. This UL-certified relay is durable and efficient.

Pros	Cons
24V Fan Relay with wide HVAC applications for versatile use. SPST 6-Terminal Design ensures secure, stable connections. UL Certified and durable for long-lasting performance. Easy to install with clear wiring diagram on housing.	No universal fit: Check compatibility before buying. Limited voltage range: Not suitable for all systems. Basic design: Lacks advanced features like indicators.

Perfect For:

This 24V AC fan relay is perfect for homeowners and HVAC technicians who need a reliable and durable solution for their heating and cooling systems. It’s easy to install and works great for furnaces, air conditioners, and more.

Ready to Purchase?

View Price on Amazon (paid link)

10. Supco 90340 HVAC/R General Purpose Switching Relay, 24V Control Coil

It switches signals. It uses DPDT contacts. It is UL and CSA approved.
Works in HVAC/R, vending machines, and fan controls. Easy to install and reliable.

Pros	Cons
Reliable switching for HVAC/R and more. UL and CSA certified for safety and quality. Simple DPDT design for easy changeover. Versatile use in vending, fans, and business machines.	Not built for big jobs Accepts only 24V control power Takes noticeable space on boards

Perfect For:

A HVAC technician and small shop owner find this relay perfect. Users prefer this quick changeover coil for many machine parts.

Ready to Purchase?

View Price on Amazon (paid link)

Buying Guide

Replace old parts often. It helps your system run right. Fix your AC safely today.

Fans turn on fast. You feel cool air now. Simple wiring makes happy days.

Voltage Rating: Most systems need 24 volts. Check your label for the number. Using high power is dangerous.

Amperage Capacity: Match the motor load to the relay. Do not blow a fuse today. Safe work means fewer fires.

Contact Type: Use SPST for simple on-off tasks. Pick SPDT for more options. Match the switch type to your job.

Build Materials: Strong metal lasts a long time. Avoid weak parts that crack. Rust kills parts fast.

Sealed Enclosure: Sealed parts fight water and dust well. Open units get dirty easily. Pick sealed for harsh areas.

Installation Guide: Look for clear wiring tips in the box. Guides help you save time. Easy steps make DIY work simple.