Can You Bypass a Bad AC Compressor?
Dealing with a malfunctioning AC compressor can be frustrating—especially during the hot summer months when you’re trying to keep cool. In a home AC system, the compressor is an essential component. Whether you’re looking at expensive or cheap air conditioners, the compressor is what works to compress and circulate the refrigerant through the system to cool your home. Without a functioning compressor, the system won’t be able to perform.
That being said if you’re dealing with a bad AC compressor in your car, then you might be able to bypass the problem to keep your vehicle running. It’s always good to understand your options!
Can I Run My AC with a Bad Compressor?
With your home air conditioning system, if the compressor fails, the usual solution is to repair or replace the compressor. In some cases, you might end up needing to replace the entire HVAC unit. It just depends on the age and condition of the system. Things are different in cars, though. Running your AC with a bad compressor can lead to significant risks, including further damage to your AC system and the chance of needing repairs for other components, too. So, if you suspect your compressor is failing, then you’d want to take immediate steps like turning off the AC to prevent more problems from popping up.
In certain situations, people start asking how you can bypass a bad AC compressor in a car. But it’s important to remember that these are temporary fixes. It’s possible for some vehicles, yet it isn’t always wise. Looking to bypass the AC compressor with a shorter belt can keep your car operating, but there’s still the chance that the damage to the compressor can impact different parts of the engine. That’s why it’s crucial to do some careful research on your own vehicle’s make and model.
You can read more about "How to tell if an AC compressor is bad?" on our blog!
Can You Fix the AC Compressor without Replacing It?
In both home and vehicle AC systems, diagnosing the exact problem with the compressor is crucial. You obviously don’t want to spend a lot of money to get your air conditioning back on track, but it’s still important to be realistic about how you can fix the problem.
Asking how you can fix a failed AC compressor always depends on the type of air conditioning system you’re looking at. Fixing an cheap AC compressor without replacing it is generally pretty difficult in a home AC unit. Moreover, it’s not always feasible. The compressor is a sealed component, and when it fails, specialized tools and expertise are usually required to repair it. Common issues like motor failure, internal component damage, or refrigerant leaks often require a complete replacement.
On the other hand, minor issues such as electrical problems or a faulty capacitor can be fixed without replacing the entire unit. But these situations are less common. It's usually more cost-effective and reliable to replace the compressor or the entire HVAC unit if the compressor is significantly damaged. The good news is that you can find high-quality, cheap air conditioners for sale right here at Surplus City HVAC & Supplies!
Questioning how you can bypass a bad AC compressor without a replacement is different for a vehicle's AC system. For these setups, fixing a compressor without replacing it can sometimes be possible. It just depends on the nature of the problem. For minor issues like a leaking seal or faulty clutch, you’ll generally be able to make repairs without replacing the entire compressor. However, if the compressor itself is internally damaged or seized, replacement is often the only viable option. That is—unless you want to bypass the AC compressor with a shorter belt.
Can You Use a Shorter Belt to Bypass an AC Compressor?
Under the right circumstances, DIY-ers can attempt to bypass the AC compressor with a shorter belt. Ultimately, this is just a temporary fix to a larger problem with their car’s air conditioning. But what it can do, in theory, is let you keep driving without causing further damage to the AC system or other related parts.
When you want to bypass the AC compressor with a shorter belt, it’s helpful to keep both the pros and cons in mind. For example, it’s cheaper than replacing the AC compressor, and it can also be done relatively quickly. You’ll be able to keep using your vehicle while preventing the damaged compressor from affecting other parts of the engine. The downside to bypassing your AC compressor with a shorter belt vs repairing the compressor is that you still won’t have air conditioning. But if you want to keep driving with a bad compressor, then you don’t want it to interfere with other essential components like the alternator or power steering pump.
To figure out what size serpentine belt do you need to bypass the AC compressor, you’ll need to measure the new path the belt will take. That means “excluding” the AC compressor pulley. You can use a string to chart this path. Wrap the string around the pulleys, then mark the length of the string. Then you’ll be able to use that measurement to find a belt of the same length!
How to Install a Bypass Pulley for Your AC Compressor
You can temporarily bypass a bad AC compressor—and keep your vehicle operational until you can address the root problem—in a few steps. At Surplus City, we’re always fans of people who want to take charge and DIY a problem. Here’s how to install a bypass pulley for the AC compressor in your car:
- Turn Off the Engine: Ensure your vehicle is off and cool.
- Locate the Serpentine Belt Diagram: This is usually found on a sticker under the hood or in your vehicle’s manual.
- Release Belt Tension: Use a belt tensioner tool to relieve tension on the serpentine belt.
- Remove the Old Belt: Carefully take off the old serpentine belt.
- Install the New Belt: Route the shorter belt according to the new path, bypassing the AC compressor.
- Check the Tension: Make sure the belt is properly tensioned and aligned.
- Double-check everything: Ensure all pulleys and components are correctly engaged and secure.
- Start the Engine: Turn on the vehicle and check for proper belt operation.
Most people can buy an AC bypass pulley from their local auto shop or online. Searching for an AC bypass pulley at O’Reilly’s or a similar auto parts store is usually a good place to start. Then, when it comes time to make a repair to your home’s heating and cooling, you can come back and check with our inventory at Surplus City.
We’re your go-to source for all things related to residential and commercial heating and cooling. With our extensive selection of HVAC repair parts and brand-new, brand-name HVAC equipment, we specialize in helping out handy homeowners working on all types of home projects. With our expert support, you can confidently tackle your DIY projects and keep your home comfortable year-round. Shop with us today and experience the difference!