Best Blower Motor Cutout Relays of 2025

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 1, 2025

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Blower motor cutout relays are essential components in heating, ventilation, and air conditioning (HVAC) systems. These relays are designed to protect the blower motor from overheating or damage due to electrical issues. When the relay senses an electrical problem, it cuts off power to the motor, preventing any further damage. This can prolong the lifespan of the blower motor and prevent costly repairs. Blower motor cutout relays are commonly used in residential and commercial HVAC systems and are available in different sizes and specifications to accommodate various types of equipment.

At a Glance: Our Top Picks

Mechanics Choice Blower Motor Relay Cover #TOP 1
Mechanics Choice Blower Motor Relay
ftb score rating icon 9.8
Mechanics Choice Blower Motor Relay Cover #TOP 2
Mechanics Choice Blower Motor Relay
ftb score rating icon 9.7
Mechanics Choice Blower Motor Relay Cover #TOP 3
Mechanics Choice Blower Motor Relay
ftb score rating icon 9.5

Top 10 Blower Motor Cutout Relays

#TOP 1

Mechanics Choice Blower Motor Relay

Sawyer Auto
PAT-145705
Mechanics Choice Blower Motor Relay Cover
Mechanics Choice HVAC Blower Motor Cut-Out Relay for 1977-1992 Buick, Chevrolet, GMC, Oldsmobile, Pontiac

The Mechanics Choice Relay is designed for easy installation in various classic vehicles, including Buick, Chevrolet, GMC, Oldsmobile, and Pontiac models from 1977 to 1992. This relay features a bracket that is perfectly aligned, ensuring a secure fit. It is crafted using modern manufacturing techniques, which means you can expect high quality and reliability. Additionally, it is made with superior materials compared to the original equipment manufacturer (OEM) parts, providing enhanced durability. You can trust that this direct replacement will work just like the factory unit, making your repair process smoother and more efficient.

What We Like
Easy installation
High-quality materials
Durable and reliable
Direct factory fit
#TOP 2

Mechanics Choice Blower Motor Relay

Sawyer Auto
PAT-145702
Mechanics Choice Blower Motor Relay Cover
Mechanics Choice HVAC Blower Motor Cut-Out Relay for 1969-1997 Buick, Cadillac, Chevrolet, GMC, Mazda, Oldsmobile, Pontiac, Subaru, Volkswagen

The Mechanics Choice Relay is engineered for a seamless fit in various classic vehicles from 1969 to 1997, including Buick and Chevrolet. This product is built with modern tooling, ensuring top-notch quality and reliability for your HVAC system. By using upgraded materials, it offers better durability compared to original parts, giving you peace of mind. The direct replacement feature allows for easy installation, mimicking the factory unit's performance perfectly. Additionally, rigorous testing ensures that each relay meets high standards for reliability, making it a smart choice for your vehicle's needs.

What We Like
Seamless installation
Durable materials
High quality and reliability
Rigorous testing
#TOP 3

Mechanics Choice Blower Motor Relay

Sawyer Auto
PAT-145704
Mechanics Choice Blower Motor Relay Cover
Mechanics Choice HVAC Blower Motor Cut-Out Relay for 1977-1994 Buick, Chevrolet, GMC, Oldsmobile, Pontiac

The Mechanics Choice Relay is a reliable solution for your 1977-1994 Buick, Chevrolet, GMC, Oldsmobile, or Pontiac vehicle. This relay is designed to fit seamlessly into your vehicle, ensuring an easy installation just like the original part. Made with modern tooling, it meets OE standards, giving you peace of mind with its quality and performance. The durable materials used in this relay exceed those of the original equipment manufacturer, providing you with a longer-lasting replacement. Additionally, each unit is rigorously tested for quality, ensuring that you receive a dependable product.

What We Like
Direct replacement for easy installation
High-quality, durable materials
Meets OE standards
Thoroughly tested for reliability
#TOP 4

Replacement Blower Motor Relay by Sawyer Auto

Sawyer Auto
PAT-145703
Replacement Blower Motor Relay by Sawyer Auto Cover
Replacement HVAC Blower Motor Cut-Out Relay for 1977-1994 Buick, Chevrolet, GMC, Oldsmobile, Pontiac

The Sawyer Blower Motor Relay is designed specifically for 1977-1994 models of Buick, Chevrolet, GMC, Oldsmobile, and Pontiac vehicles. It features a standard relay for optimal blower motor cut-out performance, ensuring your vehicle's heating and cooling systems operate smoothly. With modern manufacturing techniques, this replacement part offers superior quality and reliability compared to original equipment manufacturer (OEM) parts. Its direct fit design allows for easy installation, saving you time and hassle. Plus, rigorous testing guarantees that you receive a product that meets high standards for durability and performance.

What We Like
Direct fit for easy installation
High-quality materials
Reliable performance
Thoroughly tested
#TOP 5

Standard Motor Products CBS1160 Switch

CBS1160
Assorted
One Size
Standard Motor Products CBS1160 Switch Cover
Standard Motor Products CBS1160 T/S Switch

The Standard T/S Switch is designed specifically for your vehicle, ensuring a perfect fit and optimal performance. Made in China, this genuine switch provides reliable functionality, allowing you to control your vehicle's systems with ease. Its compact package dimensions make it convenient to store and handle. With this switch, you can enjoy peace of mind knowing you are using a quality product from a trusted brand, enhancing your driving experience by maintaining efficient operation of crucial components.

What We Like
Vehicle-specific fit
Genuine Standard product
Compact dimensions
#TOP 6

Sluffs Blower Motor Relay for Buick Riviera

Sluffs
A86010-96681RS
Sluffs Blower Motor Relay for Buick Riviera Cover
Sluffs for Buick for Riviera 6.6L 1964-1965 & 7.0L 1964-1969 & 7.5L 1970-1971 Blower Motor Relay 4 Blade Terminal 96681RS

The Sluffs Blower Relay is designed specifically for Buick Riviera models with engine sizes of 6.6L from 1964-1965, 7.0L from 1964-1969, and 7.5L from 1970-1971. This relay features a 4-blade terminal, making it easy to install and ensuring a secure connection. With its adherence to industry quality standards, you can trust that this relay will operate reliably, enhancing your vehicle's performance. By using this product, you can expect improved blower motor functionality, ensuring that your car's climate control system operates smoothly and efficiently.

What We Like
Easy installation
Reliable performance
Meets industry quality standards
Compatible with multiple models
#TOP 7

Standard Motor Products HP5090 Terminal

HP5090
Assorted
One Size
Standard Motor Products HP5090 Terminal Cover
Standard Motor Products HP5090 Ignition Wire Terminal

The Standard Motor Products Terminal is designed for automotive use, making it a reliable accessory for your vehicle. With dimensions of 5.75 inches long, 3.75 inches wide, and only 0.3 inches high, it fits neatly in various spaces, ensuring easy installation. Weighing in at 3.50 pounds, it offers a solid, durable option for your ignition wire needs. Sold as a single unit, this product is convenient for those looking for a straightforward replacement without unnecessary extras. Whether you’re a professional mechanic or a DIY enthusiast, this terminal provides the quality you need for efficient vehicle performance.

What We Like
Compact dimensions
Durable construction
Single unit convenience
Automotive application
#TOP 8

lichengshangwu Blower Motor Relay for Buick Riviera

lichengshangwu
A86010-96681RS
lichengshangwu Blower Motor Relay for Buick Riviera Cover
lichengshangwu for Buick for Riviera 6.6L 1964-1965 & 7.0L 1964-1969 & 7.5L 1970-1971 Blower Motor Relay 4 Blade Terminal 96681RS

The lichengshangwu Blower Relay is specifically designed for Buick Riviera models from 1964 to 1971, ensuring a perfect fit for your vehicle. With a part number of 96681RS, this relay features a reliable 4-blade terminal, making installation straightforward and efficient. Built to meet industry quality standards, you can trust that this product will provide consistent performance. By choosing this blower motor relay, you enhance your vehicle's electrical system, ensuring your blower motor operates smoothly and efficiently, ultimately improving your driving experience.

What We Like
Perfect fit for specific Buick models
Easy installation with 4-blade terminal
Reliable and consistent performance
Meets industry quality standards
#TOP 9

Standard Motor Products Oring Pressur SK93

SK93
Assorted
One Size
Standard Motor Products Oring Pressur SK93 Cover
Standard Motor Products, Inc. - Oring Pressur (SK93)

The Standard Motor Oring Pressur (SK93) is a reliable auto part designed for blower motor cutout relays. With compact dimensions of 3.27 inches in length, 2.94 inches in width, and 2.14 inches in height, it fits easily in various automotive applications. Manufactured in the United States, you can trust its quality and craftsmanship. The product comes in a single package, making it convenient for your repair needs. When you need a dependable component for your vehicle, this part ensures optimal performance and longevity, giving you peace of mind on the road.

What We Like
Compact size for easy installation
Made in the USA
Single package convenience
Reliable performance
#TOP 10

OUSEENA Blower Motor Relay for Buick Riviera

OUSEENA
A86010-96681RS
OUSEENA Blower Motor Relay for Buick Riviera Cover
OUSEENA for Buick for Riviera 6.6L 1964-1965 & 7.0L 1964-1969 & 7.5L 1970-1971 Blower Motor Relay 4 Blade Terminal 96681RS

The OUSEENA Buick Relay is designed specifically for the 1964-1971 Buick Riviera models, ensuring a perfect fit for your vehicle. With its four blade terminal, installation is straightforward, allowing you to quickly replace your old relay. This product meets industry standards for quality control, which means you can rely on its performance over time. By upgrading to this relay, you enhance the reliability of your blower motor, ensuring consistent airflow and comfort during your drives. Enjoy peace of mind knowing that your vehicle's heating and cooling system is in good hands with this durable relay.

What We Like
Compatible with multiple Buick models
Easy installation process
Reliable performance
Quality control standards met
Buying Guide Image

Frequently Asked Questions (FAQs)

1. How do you know if a blower motor relay is bad?

To determine if a blower motor relay is bad, you can measure the voltage for both low and high blower speeds. If there is no voltage or an incorrect voltage reading, it indicates a faulty relay or other damaged components in the circuit, such as wiring, resistor, or relay.

2. What does a blower motor relay switch do?

A blower motor relay switch functions as an on/off switch in HVAC systems. It supplies power to the blower motor, allowing the fans to circulate warmed air. By controlling the flow of current between the power source and the motor, the relay initiates and terminates the heating process.

3. What happens when the blower motor resistor goes out?

When the blower motor resistor fails, it can result in a loss of airflow from the vents. The resistor controls the power supplied to the blower motor. Without power, the blower motor cannot produce air pressure, leading to a lack of air circulation.

4. What causes a blower motor relay to fail?

Blower motor relays may fail due to exposure to high current loads, which can cause overheating. In severe cases, the relay may melt or burn, potentially damaging the fuse box or panel. Overheating can occur when the relay develops internal problems or when the relay is subjected to excessive electrical stress.

5. Is blower motor relay important?

Yes, the blower motor relay plays a crucial role in HVAC systems. It supplies power to the blower motor, enabling the circulation of warmed air. Acting as an on/off switch, the relay controls the flow of current between the power source and the motor, initiating and ending the heating process.

6. How do you diagnose a broken relay?

To diagnose a broken relay, you can use a multimeter to measure the resistance between the switch pins. If there is any resistance between the pins, such as on a four-pin relay labeled 87 and 30, it indicates that the pins are stuck closed and the relay is faulty.

Editor's Notes

During our blower motor cutout relay research, we found 24 blower motor cutout relay products and shortlisted 10 quality products. We collected and analyzed 2,996 customer reviews through our big data system to write the blower motor cutout relays list. We found that most customers choose blower motor cutout relays with an average price of $15.27.

The blower motor cutout relays are available for purchase. We have researched hundreds of brands and picked the top brands of blower motor cutout relays, including Sawyer Auto, Standard Motor Products, Sluffs, lichengshangwu, OUSEENA. The seller of top 1 product has received honest feedback from 834 consumers with an average rating of 4.5.

Written by
Robert Reyes Avatar

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.