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Ductless Mini-Split Repair Services in Seacoast NH and Southern Maine.

Home Ductless Mini-Split Repair

The best way to keep your mini-split system running at top performance is to have an HVAC professional perform regular maintenance. This will keep you ahead of potential issues that could lead to system failure. 

Learn more about our preventative maintenance program and enroll in our Energy Savings Agreement to avoid system breakdowns and costly repairs. And, as an existing East Coast HVAC customer, you’ll have access to 24/7 emergency repair service all year long. 

If something does occur and your mini-split system requires expert attention, East Coast HVAC’s professionally trained team of technicians are here to solve the problem and get your system up and running in no time. 

Here are some things to watch for that might indicate your ductless mini-split is not running at peak performance, which means it may require maintenance or repair:

  • Dirty filter: Slow to get the room at the temperature you want: 
  • Outdoor unit: Overall lack of performance 
  • Reversing Valve: Producing warm air instead of cool
  • Refrigerant Leak: Performance grows weaker over time
  • Overall system check: Strange noises
  • Clean the coils: Unpleasant odors

If you have an existing air-source mini-split for air conditioning in your home and are looking for a certified technician to perform routine system maintenance or emergency repairs, call East Coast HVAC today.

Contact Us | 603-430-9414

Ductless Mini-Split Systems Repair

Air-Source Heat Pump Systems

Ductless Mini-Split systems

The Diamond Difference

East Coast HVAC is a Diamond Elite Contractor for Mitsubishi Electric. Our team undergoes rigorous and continued in-person training through Mitsubishi Certified Training Programs.

What does this mean for you? The Diamond Elite accolade symbolizes a high level of technical ability coupled with a large volume of registered Mitsubishi installations. Our clients can feel confident that we will not only design and propose the perfect system, but will also install and support it with factory-certified technicians. It’s a difference we take pride in, and leads to 100% customer satisfaction.

Learn More about Mitsubishi Electric Ductless

Experience You Can Count On

East Coast is proud to be a trusted heating, cooling, and electrical resource for homeowners all across the New Hampshire seacoast and southern Maine. When you turn to us, you get expert service from licensed HVAC technicians and professional electricians at a fair price – every time. For nearly four decades, families have relied on our dedication to total customer satisfaction. How can we be of service to you, today?

Contact Us | 603-430-9414

Save with an Energy
Savings Agreement

Extend and protect  the life of your heating and cooling equipment and keep more money in your wallet with an Energy Savings Agreement from East Coast HVAC. ESA members enjoy 20% off routine maintenance and get preferred scheduling for services like 24/7 emergency service, system tests, startups, visual inspections, and cleanings. 

Learn More

FAQs: Ductless Mini-Split Repair Services


Most mini-split and ductless systems are repairable – that said, some are antiquated and no longer have parts available. Our promise is that, if it is possible to fix your existing system, and if it makes financial sense for you to do so (instead of replacing), we will fix it for you!


This generally means that either your condensate drain is blocked, or your system is “freezing up” due to low air flow or low refrigerant. Check and clean your air filter! If the filter is extremely dirty, it could be the cause. If that does not resolve the issue, please reach out to us.


One of the most basic and important maintenance items with a mini split system is keeping the filter clean. Generally, mini split filters are washable and there are many videos online demonstrating how to clean them properly.


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