Ductless Mini-Split Repair & Service

Mini-Split Repair Near Plainfield, North Aurora, & Surrounding Areas

Ductless Mini-Split Repair Services for Your Home or Business

Welcome to U.S. Allied Plumbing, Heating, & Cooling! We’re proud to be your trusted experts in all things plumbing, heating, and cooling in the Aurora, Illinois area. With 40 years of service experience and our commitment to quality service, we pride ourselves on being your #1 choice for plumbing and HVAC in the area.


We offer repair and service for your home or business’s ductless mini-split system, so whether you need a small part repaired or a complete system overhaul, our skilled technicians are here to provide you with top-notch service. Customer satisfaction is our priority, so you can always count on our plumbing, heating and cooling pros to get the job done right. Contact us today at U.S. Allied for mini-split repair and service near North Aurora, Illinois!

Person icon with three stars below, representing user ratings or reviews.

40 Years of Service Experience


Clock with an arrow circling around it, indicating a change or passage of time.

24/7 Emergency Services Available


Radiation hazard symbol. A black circle with three propeller-like shapes inside, with a smaller circle in the center.

Residential & Commercial HVAC & Plumbing


Wrench over gears, inside a circle. Represents tools or settings.

Ask Us About Maintenance Plans


A starburst with the percent symbol.

Veteran and 60+ Discounts

Ductless Mini-Split Repair & Service In Naperville & Plainfield, Illinois

When it comes to repair and service for ductless mini-splits, U.S. Allied is the company to trust. Our team of experienced technicians is trained to handle any issue that may arise with your ductless mini-split system. Whether it’s a minor repair or a complete system overhaul, we have the knowledge and expertise to get the job done right.


We understand the importance of a properly functioning ductless mini-split system, especially during hot summer months or cold winter days. That’s why we offer prompt and reliable service to ensure your system is up and running as quickly as possible. With U.S. Allied, you can rest easy knowing that your ductless mini-split system is in capable hands.

We Install Rinnai, Navien, State, and A.O. Smith Water Heaters.

US Allied Plumbing & HVAC provides repair and maintenance for all makes and models.

5 Signs Your Mini-Split Needs Professional Repair

If you have a mini-split system in your home, it’s important to know when it needs professional repair. Here are five signs that indicate it’s time to call U.S. Allied Plumbing, Heating & Cooling:

  • Strange noises

    If your mini-split system is making unusual sounds like grinding, squealing, or banging, it's a clear indication that something is wrong. These noises could be caused by loose parts, worn-out components, or a malfunctioning motor. A professional technician can diagnose the issue and provide the necessary repairs.

  • Weak airflow

    If you notice a significant decrease in airflow from your mini-split system, it could indicate a problem with the fan, air filter, or ductwork. Reduced airflow can affect the cooling or heating performance of your system and may require professional attention to restore optimal airflow.

  • Inconsistent temperatures

    If your mini-split system is struggling to maintain consistent temperatures throughout your home, there may be an issue with the thermostat, refrigerant levels, or the compressor. A professional technician can identify and fix the underlying problem to ensure even comfort throughout your space.

  • Leaking water

    If you notice water leaking from your mini-split system, it's a sign of a potential problem with the condensate drain line or the refrigerant lines. Ignoring a water leak can lead to further damage and higher repair costs. Calling a professional promptly will help prevent any additional issues.

  • Unusual odors

    Strange or unpleasant odors coming from your mini-split system can indicate mold growth, a burnt-out motor, or other issues. It's essential to address these odors promptly to maintain good indoor air quality and prevent any potential health hazards.

Person with glasses holding a house icon.

Locally Owned & Locally Operated

Black and white badge with a checkmark, indicating quality or approval.

Certified & Licensed With Expert Service

Financial document with dollar sign, percent symbol, magnifying glass, and exclamation point.

Free Estimates Always Available

We Offer a Maintenance Plan

We offer a Plumbing, and Heating & Cooling Maintenance Plans to keep your home or business running optimally. Our Maintenance Plans can be quarterly, yearly, or bi-annually. We’re able to work with you to find the right maintenance plan for you.

Join Today

What Our Clients Say

My Reviews
-
-

Rebates We Offer

Upgrading your plumbing and HVAC systems can be more than just a reward in itself. That’s why we partner with local utility companies to bring you rebates you can rely on so you can complete your projects with ease.

Air Source Heat Pump

  • Up to $1,400 in rebates on the installation of a qualifying heat pump
  • Minimum efficiency requirement of ≥ 16 SEER/15.2 SEER2
Learn More

Mini-Split Heat Pump

  • Up to $1,000 in rebates on the installation of a qualifying mini-split heat pump
  • Minimum efficiency requirement of ≥ 16.1 SEER2 and ≥ 9 HSPF2
Learn More

Featured Specials

We’re proud to offer seasonal specials to help you save on service throughout the year.

Furnace burners with bright blue flames.

$10 OFF

Furnace Maintenance

Don’t let your furnace fail this winter.

Learn More
Plumber working on a sink, tools and sink parts visible.

15% OFF

Drain Cleaning

Enjoy a clear drain for less.

Learn More
Row of white water heaters with digital displays and copper pipes.

20% OFF

A New Water Heater

Upgrade your water heater.

Learn More