Best Hi-Low Pressure Switches of 2025

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.
Hi-Low Pressure Switches are essential components in many HVAC systems. These switches are designed to monitor the pressure levels in a refrigeration or air conditioning system and activate or deactivate the compressor accordingly. They can detect both high and low pressure conditions, ensuring that the system operates within safe limits. Hi-Low Pressure Switches are available in various sizes and configurations to fit different HVAC systems. They are easy to install and require minimal maintenance, making them a reliable and cost-effective solution for controlling pressure levels in HVAC systems.
At a Glance: Our Top Picks
Top 10 Hi-Low Pressure Switches
GDP Global Parts 1711550 Pressure Switch
This electronic switch is designed to regulate high and low pressure in your device. The product package includes one switch with a weight of 0.03 kg and dimensions of 5.8cm (L) X 5.9cm (W) X 30.6cm (H). The switch falls under the category of Hi-Low Pressure Switches.
Four Seasons 35758 System Mounted Low Cut-Out Pressure Switch
The Four Seasons Low Cut-Out Pressure Switch is a compact and lightweight device that is designed to monitor and regulate the pressure in your system. With dimensions of 2.25 L x 1.5 H x 1.5 W (inches) and weighing only 0.1 pounds, it is easy to install and does not take up much space. Made in China, this pressure switch is part of the Hi-Low Pressure Switches category. It is manufactured by the trusted brand Four Seasons, ensuring quality and reliability. The low cut-out feature of this switch allows it to automatically shut off the system when the pressure drops below a certain level, protecting your equipment from damage. This feature is especially useful in preventing overheating and reducing energy consumption. With the Four Seasons Low Cut-Out Pressure Switch, you can have peace of mind knowing that your system is running efficiently and safely.
Four Seasons 20925 High Cut-Out Pressure Switch
The Four Seasons 20925 High Cut-Out Pressure Switch is a system mounted switch designed to control the pressure in your vehicle's air conditioning system. With a part number of 20925, this pressure switch is lightweight, weighing only 0.1 pounds. It also has compact dimensions of 4.318 H x 7.112 L x 6.35 W (centimeters), making it easy to install in your vehicle. This pressure switch is categorized as a Hi-Low Pressure Switch and is manufactured by the trusted brand, Four Seasons. The Four Seasons 20925 High Cut-Out Pressure Switch ensures that the pressure in your vehicle's air conditioning system is maintained at the optimal level, preventing any potential damage to the system. It provides convenience and peace of mind, allowing you to enjoy a comfortable and efficient cooling experience while driving.
Four Seasons 20916 High Cut-Out Pressure Switch
The Four Seasons High Cut-Out Pressure Switch is a system-mounted switch designed to monitor and control the high pressure in your vehicle's air conditioning system. With its compact and lightweight design, this pressure switch is easy to install and provides accurate and reliable performance. The switch features a high cut-out function, which helps protect the system from overpressure and potential damage. Additionally, the Four Seasons High Cut-Out Pressure Switch has a part number of 20916 and comes in a small package that weighs only 0.05 pounds. Its dimensions of 3.81 H x 6.096 L x 4.064 W (centimeters) make it a convenient choice for various vehicle models. Upgrade your air conditioning system with the Four Seasons High Cut-Out Pressure Switch and enjoy efficient cooling without worrying about excessive pressure.
Four Seasons 35973 Low Cut-Out Pressure Switch
The Four Seasons 35973 Compressor Mounted Low Cut-Out Pressure Switch is a small and lightweight part that can help regulate the pressure of your compressor. With a part number of 35973 and package dimensions of 22.1 H x 4.0 L x 6.1 W (centimeters), it is designed to be easy to install and use. Its category is Hi-Low Pressure Switches, which means it can be useful for those who want to regulate the pressure of their compressor.
Four Seasons 36676 System Mounted Cycling Pressure Switch
The Four Seasons Cycling Pressure Switch (36676) is a convenient and reliable solution for managing the pressure in your system. With its compact design and lightweight construction, this pressure switch is easy to install and doesn't take up much space. The part number 36676 ensures compatibility with your system, providing a seamless integration. The package weight of 0.05 pounds makes it lightweight and easy to handle. The package dimensions of 3.81 H x 9.398 L x 4.318 W (centimeters) allow for a compact and space-saving installation. Whether you're a DIY enthusiast or a professional mechanic, the Four Seasons Cycling Pressure Switch is a must-have for maintaining optimal system performance.
Four Seasons 37311 Pressure Switch
The Four Seasons 37311 Pressure Switch is a system mounted low cut-out pressure switch designed to ensure the proper functioning of your vehicle's air conditioning system. With its compact size and lightweight design, this pressure switch is easy to install and does not add any extra weight to your vehicle. The package dimensions of 3.555 H x 4.826 L x 4.318 W (centimeters) make it convenient to store or transport. This pressure switch is part of the hi-low pressure switches category and is manufactured by the trusted brand Four Seasons. It is a reliable and durable component that will help maintain the optimal performance of your air conditioning system.
Wilwood Pressure Switch 300-11181
The Wilwood Pressure Switch is designed for precision and reliability in your hydraulic systems. With a 1/8 inch NPT male fitting, it ensures a secure connection, making installation straightforward. This dual pole switch operates within a range of 60 to 100 PSI, providing flexibility for various applications. Its plated-steel construction enhances durability, protecting against corrosion and wear. By using this switch, you can monitor pressure levels effectively, ensuring your system operates efficiently and safely. Enjoy peace of mind knowing your hydraulic system is equipped with a reliable pressure switch that meets your performance needs.
Four Seasons 35833 Low Cut-Out Pressure Switch
The Four Seasons Pressure Switch is a compact device measuring 3.5 x 1.5 x 1.5 inches and weighs only 0.12 pounds. It originates from China and is identified by part number 35833. This pressure switch falls under the Hi-Low Pressure Switches category and is manufactured by Four Seasons. The small dimensions make it easy to install in tight spaces, while the lightweight design adds convenience during handling. Originating from China, it offers a cost-effective solution for your needs.
SANTECH Hi-Low Pressure Switch
The SANTECH Pressure Switch is designed to maintain your air conditioning system's efficiency. With its compact size, it fits easily into your existing setup, helping to ensure optimal performance. This switch plays a crucial role in regulating the pressure levels within your A/C system, which can prevent potential damage and costly repairs. Weighing only 0.045 kilograms, it is lightweight and easy to handle, making installation a breeze. Additionally, manufactured in China, it meets various quality standards, ensuring you receive a reliable product for your cooling needs.
Frequently Asked Questions (FAQs)
1. What is a low pressure switch used for?
A low-pressure switch is used for various purposes in different systems. It can be utilized to control the temperature in a case by cycling a compressor on and off at the required coil temperatures. It can also be used for defrosting the evaporator in medium-temperature equipment. Additionally, it is used in pump down systems to cycle a compressor on and off.
2. What happens when a high pressure switch goes bad?
When a high-pressure switch goes bad, it can cause the AC compressor to turn on and off rapidly, a phenomenon known as short-cycling. This not only leads to inefficient cooling but also increases wear and tear on the compressor. To prevent higher cooling costs and potential damage to the compressor, it is important to schedule an AC repair as soon as possible.
3. What are the symptoms of a faulty pressure switch?
Some common symptoms of a faulty pressure switch include the pump not turning off even when the water pressure has exceeded the set cut-out point, low water pressure despite the pump running, and the pump switching on and off immediately after activation. If you notice any of these signs, it may indicate a failing pressure switch for your well pump.
During our hi-low pressure switch research, we found 24 hi-low pressure switch products and shortlisted 10 quality products. We collected and analyzed 4,436 customer reviews through our big data system to write the hi-low pressure switches list. We found that most customers choose hi-low pressure switches with an average price of $21.40.
The hi-low pressure switches are available for purchase. We have researched hundreds of brands and picked the top brands of hi-low pressure switches, including Global Parts, Four Seasons, Wilwood, SANTECH INDUSTRIES. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

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.