‘Why Is My Mini-Split Leaking Water?’ & Other Ductless Air-Con Issues!

April 3, 2023

Ductless air-conditioning, or mini-splits, is becoming more and more popular. They’re efficient, quiet, and can be installed almost anywhere. But like any other piece of machinery, they’re not perfect. If you’re having issues with your mini-split, you’re not alone.

This blog post by Carney & Son 72 Degrees will explore some of the most common ductless AC problems and their solutions. Stay cool!

Issue #01: My Mini-Split is Leaking Water

If your mini-split leaks water, it’s likely due to one of two issues: either the drain pan is full, or the condensate pump is not working properly.


1: Empty the Drain Pan

The first thing you’ll want to do is check the drain pan. If it’s full, empty it and see if that solves the problem. If your mini-split doesn’t have a drain pan, you can purchase one at your local hardware store.

2: Check the Condensate Pump

If your mini-split has a condensate pump, ensure it’s turned on and working properly. If it’s not, you may need to replace it.

Issue #02: My Mini-Split is Making Strange Noises

If your mini-split is making strange noises, it could be due to several issues, including loose parts, debris in the fan, or a problem with the compressor.


1: Check for Loose Parts

First, make sure all the bolts and screws are tight. If that doesn’t solve the problem, you may need to call a technician to take a look.

2: Clean the Fan

If your mini-split fan is dirty or full of debris, it can cause strange noises. To clean the fan, turn off the power and remove the unit’s front panel. Then, use a brush or vacuum attachment to remove any dirt or debris.

3: Call a Technician

If you’ve tried the above solutions and the noise persists, there’s likely an issue with the compressor. In this case, you’ll need to call a technician for repairs.

Issue #03: My Mini-Split is Blowing Hot Air

If your mini-split is blowing hot air, it could be due to several mini-split issues, including clogged filters, a refrigerant leak, or a problem with the thermostat.


1: Check the Filters

If your mini-split filters are dirty or clogged, they can restrict airflow and cause the unit to blow hot air. To clean the filters, remove them from the unit and wash them with soap and water.

2: Check for a Refrigerant Leak

If your mini-split is leaking refrigerant, it will likely be blowing hot air. To check for a leak, look for an ice buildup around the copper lines that connect the indoor and outdoor units. If you see ice, there’s likely a refrigerant leak.

3: Check the Thermostat Settings

If your mini-split thermostat is too low, it may be blowing hot air. To check the thermostat settings, look for a switch near the indoor unit that says “Fan” or “Auto.” If the switch is set to “Fan,” change it to “Auto.” If the problem persists, call a technician for help.

Important Note: You can try these fixes at home but don’t go overboard. You may end up doing more harm than good. It’s best to call a professional after a few tries!

Carney & Son 72 Degrees has the best technicians for all kinds of AC service, including mini split repair services in Mount Pleasant.

So, if you’re facing any issues with your AC in the scorching heat, don’t wait – call us today for a free quote!

Carney & Son Air Conditioning and Heating

Carney & Son, 72 Degrees

We are a family Owned & Operated HVAC Services in Charleston, SC, proudly serving the Charleston community for 39 years.

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