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Lakeville has grown quickly over the past few decades, and most of its homes are newer construction with larger lots near lakes like Lake Marion and Orchard Lake. Many of these homes use ductless mini splits to cool bonus rooms, garages, and additions that don’t connect to the main system. O’Boys Plumbing, Heating & Air has repaired mini splits throughout Lakeville for more than 25 years, with certified technicians ready to help.

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Why Homeowners in Lakeville, 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.

Signs It's Time to Schedule a Repair

Bonus rooms, garages, and additions across Lakeville often put specific demands on ductless systems. Watch for these signs that repair is needed.

  • Room stays warmer than the rest of the house
  • Loud rattling from the outdoor unit
  • Ice buildup in mild weather
  • Weak airflow from the vents
  • Sudden increase in energy bills
  • System won’t turn on

Since these spaces are often used for hobbies or extra living area, it’s worth addressing issues quickly to keep them comfortable.

What Happens During a Repair Visit

Our technicians start by reviewing how the system was originally installed, since many Lakeville homes added mini splits specifically for garages, bonus rooms, or additions with unique cooling needs. We check refrigerant levels, electrical connections, and airflow as standard parts of every visit.

Once we’ve found the cause, we complete the repair and test the system under normal conditions to confirm it’s performing properly. For units cooling garages or larger bonus rooms, we also check whether the system was sized appropriately for the space.

We wrap up every visit by explaining our findings and offering guidance suited to how you use the space.

Repairs We See Often in Lakeville

Given how many Lakeville homes rely on mini splits for garages, bonus rooms, and additions, a fairly consistent set of issues comes up.

  • Improper original sizing
  • Refrigerant leaks
  • Faulty control boards
  • Worn compressor parts
  • Dirty filters and coils
  • Electrical connection issues

We take the time to determine the exact cause so the repair actually solves the problem.

Inside a Typical Service Visit

A homeowner named Amanda near the Lake Marion area called us when her garage mini split stopped cooling during a stretch of hot summer days. Our technician found the unit had been undersized for the garage’s insulation level, and a low refrigerant charge was making the problem worse.

After recharging the system and discussing whether a larger unit might better suit the garage long term, the repair brought noticeable improvement for the rest of the summer. Amanda appreciated understanding why her setup needed a bit more attention than a standard bedroom install.

Why Lakeville Homeowners Choose O'Boys

Homeowners across Lakeville’s newer neighborhoods keep choosing us for a consistent set of reasons.

  • Same-day emergency service
  • Certified and insured technicians
  • Experience with garages and bonus rooms
  • Transparent, upfront pricing
  • Family owned for over 25 years
  • Preventative maintenance programs

Whether your mini split cools a garage, bonus room, or lakeside addition, we treat every job with the same care.

frequently asked questions

Can a mini split be undersized for a garage?
Yes. If a unit wasn’t sized for the garage’s insulation and square footage, it may struggle to keep up on hot or cold days.
This can be caused by an electrical issue or a tripped safety switch. A technician can diagnose the exact cause during a repair visit.
Yes. Even newer systems can develop issues over time, especially in spaces like garages that see heavy use.
We offer same-day service for most repair calls throughout the city.
A technician can evaluate your space and system to help you decide which option makes the most sense long term.

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