What Does the AC Float Switch Do?
The AC float switch is a critical safety feature in AC units. In this blog, you’ll learn all about this small but significant device and how it can prevent overflows. It also covers how you can tell if there’s something off with your float switch and even when it might need to be replaced. Learn the answer to these questions:
- What is an AC float switch?
- How does an AC float switch work?
- How to tell if your AC float switch is faulty
- Can you replace an AC float switch yourself?
- When to call a professional for AC float switch replacement
Now, onto our guide to AC float switches, routine maintenance, and switch replacements.
Keep Your AC Running: Schedule a Float Switch Check
Proper AC maintenance is a major part of ensuring your HVAC system is in great shape. The team at Champion Air is trained to service all AC brands, old and new. With fast and reliable service and an A+ rating from the BBB, we have a reputation for excellence, and we can’t wait to show it off. If you need help checking the float switch on AC units, call our office today.
What Is an AC Float Switch?
A float switch for AC units, also called a condensate float or safety switch, is a device that monitors the water levels in an AC unit. The switch’s primary purpose is to prevent water from overflowing in the drain pan. As the water level rises, the float switch senses danger and shuts off the AC.
How Does an AC Float Switch Work?
AC float switches are a fascinating combination of technology and old-fashioned mechanics. The first part of the device is a buoyant float. The second crucial part is an electrical circuit. As water levels rise, the float also rises. When it reaches a certain level that indicates a potential overflow, the float trips the electrical sensor, shutting down the air conditioner.
This mechanism is so important because AC units are constantly producing condensation as they operate. The drip pan is designed to catch that moisture, which is then funneled away through a drain line. But if condensation is generated faster than the pan can store it, you have a potentially dangerous situation in the offing.
When float switches work correctly, they help prevent water damage and mold growth that could result from an otherwise undetected overflow.
How to Tell if Your AC Float Switch is Faulty
Your AC float switch is likely faulty if:
- Your AC unit is shutting off randomly and without associated drainage issues
- There’s water pooling in and/or around the drain pan and the AC unit is still running
- The float switch is pushed up, but the AC unit has not turned off
If you suspect there’s an issue with your float switch, you can test it by lifting the float up to simulate an overflow. If the system turns off, all is well. If not, you may have an issue that calls for AC repair.
Can You Replace an AC Float Switch Yourself?
You can replace your AC float switch by following these steps.
Step 1: Turn Off the Power
Turn off your air conditioner and shut off the breaker to ensure your safety.
Step 2: Locate the Float Switch
Find your float switch. It may be in the drain pan or the drain pipe.
Step 3: Remove the Faulty Switch
Unplug the old float switch. You may need a screwdriver to fully detach the device. Inspect the drain line and flush it if you spot any stray debris or clogs.
Step 4: Install the New Switch
Place the new switch in its proper place, ensuring the device is level and secure.
Step 5: Turn the Unit Back On
Restore power and test your float switch as directed above.
When to Call a Professional for AC Float Switch Replacement
You may need to call a professional if:
- You can’t find your AC float switch.
- You’re not sure if the float switch is faulty or if there’s another reason your AC is malfunctioning.
- You’re not comfortable or able to perform the recommended repairs or AC float switch reset.
AC Acting Up? Book Maintenance Today!
If you’re dealing with a backed-up water line or an AC unit that won’t switch on, you may have an issue with your AC float switch. Champion Air specializes in AC maintenance, repair, and installation. We offer regular weekday service, 24/7 emergency visits, and finance plans for those who qualify. Don’t let a malfunctioning AC interrupt your comfort. Call today and experience The Champion Air Difference!
