Contact Us

When your ductless mini split stops keeping up with Andover’s hot, humid summers or its bitter cold winters, you need a team that knows how local weather affects these systems. At O’Boys Plumbing, Heating & Air, we’ve spent more than 25 years helping homeowners near Round Lake and Crooked Lake keep their comfort systems running strong. Whether your unit is blowing warm air, leaking, or won’t turn on at all, our certified technicians can get to the root of the problem fast.

our services

Why Homeowners in Andover, MN Trust Us

Stacie Selnes
Excellent service from the call to the technician! Rare. They were able to come out same day in the evening! Even more rare. Chad was knowledgeable, explained everything to me and I couldn't be happier with the final bill! Unheard of!! I will refer everyone to O'Boys.
Katie Hertz
We had a great experience with O’Boys. We had a furnace tune-up done, and Chad was really knowledgeable and informative. He walked us through options and pricing, and helped us understand what to expect with our furnace in the coming years. We look forward to working with O’Boys again.
Michael Carr
I had Great experience with Rob during the consultation. He was detailed, informative, personable and professional. He gave me options and broke down rebates and payment options for me. Reasonable price as well!
Simone Youssef
Second time using O’Boys and they did not disappoint! Chad was so knowledgeable, efficient, and kind. Was able to fix my problem and gave me some great tips going forward. Excellent work and excellent customer service. Chad—you rock—thank you so much!!
Georgia Aragon
Gavin from O'Boys Plumbing came to deliver & fill our water softener. He was very polite, efficient and professional. He did a great job.

Warning Signs Your Ductless Mini Split Needs Repair

Andover’s swings between muggy summer afternoons and subzero winter nights put extra strain on ductless systems, especially in homes with additions, garages, or sunrooms that rely on them for climate control. Here are the signs it’s time to call for repair.

  • Weak or uneven airflow
  • Clicking or buzzing sounds
  • Ice forming on the unit
  • Water pooling near the indoor unit
  • Rising energy bills
  • Unit won’t power on
  • Musty smell when running

Catching these signs early can save you from a full system breakdown during Minnesota’s harshest weather.

What to Expect From Our Ductless Mini Split Repair Process

Every repair visit starts with a full inspection of your indoor and outdoor units. Our technicians check refrigerant levels, electrical connections, drainage lines, and airflow to pinpoint exactly what’s wrong. We walk you through what we find before any work begins, so there are no surprises.

Once we know the issue, we get to work with the right parts and tools on hand for most common repairs. We test the system thoroughly after every fix to confirm it’s heating or cooling properly before we consider the job done.

Because Andover homes see such a wide temperature range across the year, we also check for wear caused by seasonal stress, like ice buildup on outdoor units in winter or condensation issues during humid summer stretches near the lakes.

Common Ductless Mini Split Problems We Fix

Ductless systems are reliable, but certain problems show up more often in this climate. These are some of the most common issues our technicians repair around Andover.

  • Refrigerant leaks
  • Frozen coils
  • Faulty compressors
  • Clogged filters or coils
  • Thermostat malfunctions
  • Drainage backups
  • Electrical connection issues

No matter the cause, we diagnose the real issue instead of just treating the symptoms.

Inside a Typical Service Visit

One afternoon, a homeowner named Mark near the Crooked Lake area called us after noticing his ductless mini split in the three season porch had stopped blowing cold air during a stretch of hot, humid days. Our technician arrived that same day and found the outdoor unit’s coils were coated in grime from the lake area’s higher pollen and moisture levels, which was restricting airflow.

After a thorough cleaning and a check of the refrigerant charge, the system was back to cooling the porch evenly within the hour. Mark mentioned he’d been putting off maintenance for a couple of years, so our technician also walked him through a simple upkeep routine to help the unit handle Andover’s humid summers going forward.

Why Andover Homeowners Choose O'Boys Plumbing, Heating & Air

Homeowners across Andover trust us because we treat every home like it’s our own. Here’s what makes us different.

  • Same-day emergency service
  • Certified and insured technicians
  • Preventative maintenance programs
  • Transparent, upfront pricing
  • Family owned for over 25 years
  • 5-star customer results

When you call O’Boys, you get a team that shows up on time and treats your comfort like it matters.

frequently asked questions

How long does ductless mini split repair take?
Most repairs are completed in a single visit, though the exact time depends on the issue. Our technicians will give you a clear timeframe once they’ve diagnosed the problem.
In many cases, yes. Most issues like refrigerant leaks, dirty coils, or electrical problems can be repaired without replacing the whole system. We’ll always recommend the most cost effective option for your home.
Ice buildup usually happens when airflow is restricted or refrigerant levels are low. Andover’s cold winters can make this worse, especially if the outdoor unit isn’t properly maintained.
Humidity from nearby lakes and wetlands can cause condensation issues or mold growth if a system isn’t sized or maintained correctly. Regular maintenance helps your unit manage moisture more effectively.
We recommend a maintenance check at least once a year, ideally before the summer cooling season begins. Homes near lakes or wooded areas may benefit from more frequent filter and coil cleanings.

Contact Us