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How To Clean A Pcv Valve

If you own a home or business with HVAC (heating, ventilation and air conditioning), then chances are you have a pcv valve in your system. A pcv valve is a critical component of your heating and cooling system and should be treated as such. If it’s not properly cleaned, the valve can eventually become blocked, necessitating costly repairs. Follow these simple steps to clean your pcv valve quickly and easily so that you can keep your system running smoothly.

What is a Pcv Valve and What does it do?

A Pcv valve is a pressure relief valve that controls the pressure within a system. It’s often used in vehicles to control the air/fuel mixture and protect the engine from over-revving.

How to Clean a Pcv Valve

If your furnace is not blowing hot air, there may be a problem with the pcv valve. A pcv valve is a small valve that regulates the flow of gas and oil through your furnace. If the valve is clogged, it won’t let the right amount of air into the furnace to heat it up properly. Here’s how to clean it:

1. Turn off the power to your furnace and unplug any wires from the valves.

2. Open the cover on your furnace and remove the pcv valve (it’s usually housed in a metal bracket).

3. Squeeze some dish soap onto your hand and fill up the chamber on top of the valve with water until it’s nearly full. Let the mixture sit for about five minutes so that it can start to dissolve the soap film built up on the valve.

4. Carefully pour out all of the soapy water, making sure to catch any debris that falls out of the Valve. Replace the cover on your furnace and plug everything back in, turned on this time only enough to test for leaks. If there are no leaks, you’re done! If there are still leaks, repeat steps 3-4 until you’ve fixed them all.


It’s important to keep your Pcv valve clean and free of debris to ensure that it operates properly. This guide will show you how to clean your Pcv valve, including the best way to do so depending on the type of valve. If you have any questions or concerns about cleaning your Pcv valve, don’t hesitate to reach out to a professional.