Why Your Ductless Mini Split is Icing Up
Updated September 2026
As a homeowner in Central Texas, you're likely no stranger to the hot summers and mild winters that our region experiences. Ductless mini splits are a popular solution for heating and cooling, offering an efficient and effective way to control the temperature in your home. However, like any appliance, they can sometimes malfunction. One common issue is when the indoor or outdoor unit starts to ice up.
If you're experiencing this issue with your ductless mini split, it's essential to understand the causes and how to troubleshoot the problem. In some cases, the issue may be with the unit itself, while in other cases, it could be related to the installation or maintenance of the system. At Old West Minisplits, we offer flat-price new installations of ductless mini splits, and we're here to provide you with helpful information to diagnose and potentially resolve the issue.
Causes of Icing Up
The icing up of a ductless mini split unit can be caused by several factors, including low refrigerant levels, dirty air filters, or a malfunctioning thermostat. It's also possible that the unit is not properly sized for your home, or that there are issues with the drainage system. In some cases, the problem may be with the unit itself, and it may need to be replaced. If you're experiencing persistent issues with your ductless mini split, it may be worth considering a new installation.
Troubleshooting Steps
To troubleshoot the issue, start by checking the air filters and ensuring they are clean. You should also inspect the drainage system to ensure it's not clogged. If the issue persists, it may be worth checking the refrigerant levels or the thermostat. In some cases, it may be necessary to call a professional to diagnose and repair the issue. However, if your unit is old or has been poorly installed, it may be more cost-effective to consider a new installation.
New Installation as a Solution
If you're experiencing persistent issues with your ductless mini split, or if you're looking to upgrade to a more efficient system, a new installation may be the best solution. At Old West Minisplits, we offer flat-price new installations of ductless mini splits, with prices starting at $2,000 for a 1-zone system. Our installations include equipment, labor, line set, standard electrical, refrigerant, testing, cleanup, and a Home Depot run for touch-up paint. We also offer honest exceptions upfront, so you know exactly what you're getting.
How we compare
| Factor | Old West Minisplits | The usual |
|---|---|---|
| Price per zone | $2,000-$5,400 | $3,000-$6,000 |
| Installation process | Flat-price, upfront exceptions | Quote-based, in-home sales visit |
| Equipment quality | High-quality, efficient units | Variable, depending on contractor |
| Service area | Austin and I-35 corridor | Varies by contractor |
| Additional costs | None, all-inclusive pricing | Possible trip fees, surprise add-ons |
Straight answers
Why is my ductless mini split icing up?
The icing up of a ductless mini split unit can be caused by several factors, including low refrigerant levels, dirty air filters, or a malfunctioning thermostat.
How can I troubleshoot the issue?
To troubleshoot the issue, start by checking the air filters and ensuring they are clean. You should also inspect the drainage system to ensure it's not clogged.
Is a new installation the best solution for me?
If you're experiencing persistent issues with your ductless mini split, or if you're looking to upgrade to a more efficient system, a new installation may be the best solution. Contact us for a quote to determine the best course of action for your specific situation.
What is included in Old West Minisplits's flat-price installation?
Our installations include equipment, labor, line set, standard electrical, refrigerant, testing, cleanup, and a Home Depot run for touch-up paint.
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