Ductless Mini Split Repair in Burlington, WI

NATE-Certified Technicians Serving Since 1978

H.J. Faust, Inc. has been a trusted name for heating and cooling in Burlington, WI since 1978. With more than 20,000 clients served over four decades and technicians who are NATE-certified, factory-trained, fully licensed, and insured, we’re equipped to diagnose and repair your ductless mini split system right the first time. We service all major brands, including Carrier, Daikin, Goodman, Honeywell, Trane, and Bryant, and we’re available 24/7 for emergency mini split repair calls. Our BBB accreditation reflects the accountability we bring to every job.

When your mini split stops working, don’t wait for the problem to get worse. Call H.J. Faust, Inc. at (262) 418-0700 for professional mini split repair in Burlington, WI.

What Our Mini Split Technicians Repair

Mini split problems aren’t always obvious from the outside. Our technicians work on both the indoor air handler and the outdoor unit, tracing symptoms back to their root cause before touching anything. Here’s what that looks like in practice.

System Not Blowing Cold Air

A hissing or whistling sound alongside weak cooling often points to a refrigerant leak. Our technicians locate the leak, make the repair, and recharge the system to the correct level. We also clean or replace clogged filters and coils and repair faulty wiring that can disrupt the cooling cycle. Weak cooling despite seemingly normal operation can also indicate a failing compressor, which we’ll assess and address directly.

System Not Blowing Hot Air

When a ductless mini split won’t heat, the reversing valve is often the culprit. This component switches the system between heating and cooling modes, and a faulty one can leave you without heat even when everything else checks out. Our technicians inspect the reversing valve, check for ice buildup or debris restricting the outdoor unit, and evaluate compressor condition to give you a complete picture.

Water Leaks & Condensate Issues

An indoor unit dripping water down a wall isn’t just a nuisance. It can cause structural water damage and create conditions for mold growth. Clogged condensate drain lines and damaged drain pans are the most common causes, and both are repairable. We also address refrigerant leaks that can disrupt the system’s pressure balance and contribute to condensation problems.

Warning Signs Your Mini Split Needs Service

Catching a problem early can keep a small repair from becoming a major one. Watch for these signs that your ductless system needs a professional look.

• Hissing or whistling sounds: These noises often indicate a refrigerant leak, which needs immediate professional attention to help protect system components.
• Musty or unusual odors: A musty smell points to mold or mildew growth inside the air handler, while an electrical smell may signal an overheating component.
• Reduced airflow: Poor airflow can stem from a clogged filter or a malfunctioning blower motor inside the indoor unit.
• Weak or absent heating or cooling: When output doesn’t match what the thermostat calls for, a low refrigerant charge or failing compressor is often to blame.
• Unresponsive controls: A remote or control panel that won’t communicate with the unit may reflect an electrical fault or a failed control board component.

Repair vs. Replace: Honest Guidance You Can Count On

We begin with a thorough inspection before recommending any repair or replacement, and we won’t recommend more than your system actually requires. A ductless mini split that has needed frequent repairs or is more than a decade old may be a better candidate for replacement than continued patching, and we’ll tell you that plainly rather than push another repair. When repair is the right call, it’s the call we make.

Preventive maintenance is a reliable way to help avoid emergency calls. We recommend a spring check-up for your cooling system and a fall check-up before heating season. Our Annual Maintenance Agreement covers both a furnace check-up and an air conditioner check-up, and it includes priority scheduling, no overtime charges for after-hours calls, a 30-point inspection, and a 10% discount on parts and labor when repairs are needed. Regular service can also help preserve manufacturer warranties by catching small issues before they become failures. Every one of our field and office employees attends a minimum of four training sessions per year to stay current on equipment and processes, so the technician who shows up knows what they’re doing.

Why Burlington Homeowners Choose H.J. Faust, Inc.

Experience and credentials matter when a system you depend on stops working. Here’s what sets our team apart.

Internal Apprenticeship & Development Program
Our mechanics are trained through our structured Internal Apprenticeship & Development Program, a multi-year curriculum that combines classroom instruction with hands-on field work under direct Senior Mechanic supervision. This is how we maintain a consistently high standard across our entire team, not just our most experienced technicians.

NATE Certification
NATE certification means our technicians have passed nationally recognized competency exams in heating, cooling, ventilation, and refrigeration. It’s the industry benchmark for verifying that a technician knows the work, not just the toolbox.

Community Commitment
We’re not just a business in Burlington. We participate each year in the Lennox Feel the Love program, donating and installing a new heating or cooling system for a community household that couldn’t otherwise afford one. We also sponsor the Tall Tales Music Festival, the Burlington Turkey Trot benefiting Love, Inc., and the Transitional Living Center of Burlington, and we support local schools, athletic programs, and the Chamber of Commerce. We recycle all eligible material on every job and dispose of the rest responsibly.

Competitive Pricing & Flexible Scheduling
We offer competitive pricing and flexible scheduling so getting your system repaired doesn’t have to be a logistical headache.

Mini Split Repair FAQs

Why Is My Mini Split Leaking Water Indoors?

A clogged condensate drain line or a dirty filter can cause water to back up in the indoor unit and overflow down a wall. A technician should inspect and repair this promptly to help prevent water damage and mold growth inside your home.

What Should I Do If My Mini Split Isn’t Blowing Cold Air?

Check your thermostat settings and clean or inspect the filter first. If the issue continues, a technician should inspect for refrigerant leaks or electrical problems that standard troubleshooting won’t resolve.

Why Does My Mini Split Smell Strange?

Musty odors typically mean mold or mildew is growing inside the air handler. An electrical smell may indicate an overheating component. Both situations warrant a professional inspection before you continue running the system.

Is It Normal for the Outdoor Unit to Freeze?

Light frost on the outdoor unit during cold weather is normal. A fully frozen outdoor unit isn’t and requires professional diagnosis to determine whether a refrigerant issue, airflow restriction, or another fault is the cause.

Why Is My Mini Split Running Continuously Without Reaching the Set Temperature?

Start by checking thermostat settings. If the system keeps running without reaching your target temperature, a calibration issue, refrigerant problem, or system fault may be present, and a technician should take a look.

Serving Burlington, WI & the Surrounding Area

H.J. Faust, Inc. provides ductless mini split repair in Burlington, WI and the surrounding communities, including Waterford, Lake Geneva, Racine County, and Kenosha County, WI.

Schedule your mini split repair today by calling (262) 418-0700 or contacting us online.