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Ductless Mini-Split Repair

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As more Chicagoland home and business owners have installed ductless heat pumps, competent maintenance and repair services are increasingly rare. However, at Doc's HVAC we are fully committed to the proper support of these technically advanced systems. We have over a decade of experience and the factory training needed to professionally repair ductless mini split heat pumps regardless of brand.

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Home Remedies?

A significant portion of our ductless heat pump house calls are the result of either a simple repair, or confusion with the system controls that could have been resolved by the owner. If you check out these things, you may find you won't need our help after all:

  • Start with the controls:
    • If you are using hand held remotes, check the battery, and replace them now.
    • Make sure that at least one zone is set to "ON" and the desired temperature is set well below ambient for cooling operation, or well above ambient for heating.
    • If you are operating in the heat mode, make sure that your system is not in “Defrost” mode. If it is wait a few minutes for your system to complete its defrost cycle.
  • Now check the power supply:
    • Check your circuit breaker for your outdoor unit to ensure that you have not had a nuisance trip and your heat pump system does have power.
    • Check the outdoor disconnect typically mounted next to your outdoor unit to ensure that it is "ON".
    • If your breaker or disconnect was off, after turning the power on, give it a few minutes: many systems have a built-in time delay.
  • If your system is on, but not heating or cooling properly:
    • Check your indoor unit filters. If your filters have not been cleaned lately, clean them now.

After checking these items, if your mini split heat pump is still off or running improperly call the Doc! We’ll dispatch a service tech to help day or night. Our EPA (Environmental Protection Agency) certified, licensed, and factory-trained team technicians guarantee service and on time professional repairs.

Common Mini Split Heat Pump Service Issues:

By far the most common cause of ductless heat pump problems is improper installation. We know how efficient and comfortable a ductless heat pump system can be, but if it's improperly sized, or improperly installed, they can fail to live up to your expectations. Common problems include:

  • Installation Issues:
    Bigger is NOT better: If an indoor unit is too small it will fail to properly heat or cool in extreme weather. If it is too big, you will have spent more on the installation than needed and it will cycle on its lowest output and fail to properly dehumidify.

    Refrigerant loss due to improper installation or mechanical damage. Most mini split systems have lineset(s) between the indoor and outdoor units , and are connected with flare fittings. If these connections are not carefully made, they leak refrigerant over time. This will result most commonly in reduced system capacity.

    Condensation Leaks caused by indoor units installed out of level, or crimped or obstructed condensate lines.
  • Maintenance issues or component failures:
    Changes in heating or cooling capacity over time caused by loss of refrigerant, or improper maintenance. Dirty indoor or outdoor coils.
    Noisy indoor operation caused by a dirty filter or indoor coil.
    Noisy outdoor unit may indicate a motor, compressor, or reversing system failure.
    Outdoor unit fails to start may be caused by improper wire or breaker sizing, a tripped fuse, or failed outdoor component.
    Indoor zone fails to start may be caused by loose or defective control wiring, or obstructed or failed IR receiver.

If your ductless mini split heat pump is fine now, you should consider our seasonal maintenance program. Either once or twice a year, we’ll schedule a complete system check to ensure your system is ready for the cooling or heating season. We'll deliver the peace of mind of a perfectly maintained HVAC system.

If you’re considering a new mini split heat pump, we offer free estimates for new Mitsubishi system installations. Click here for our details.

Mitsubishi Mini Split

Ductless Mini Split Installation

Doc’s can also replace or install a new high-efficiency Mitsubishi Mini Split Heat Pump


Installation

Pre-Season Maintenance Provides Peace of Mind

Regular check-ups and a healthy diet of professional maintenance will improve the health of any gas furnace and ensure and longer more productive life. Doc's HVAC offers our pre-seasonal tune-up services for area homeowners and businesses.

Prior to the heating season, we'll inspect you heating system, replace the air filters, and thoroughly test and clean your furnace to make sure your ready for a trouble-free winter. Read more about our maintenance plan.

Doc's is Family Owned:
Since 2002, Doc's HVAC has been owned and operated by Mike and Dana Riebe. Doc's is an active member of the Geneva, IL area community.
Better Business Bureau:
Check out our five star reviews on our local BBB. We are more than proud of our A+ BBB rating!
Licensed and Insured:
We are licensed and insured heating and air conditioning contractors.
EPA Certified:
All of our field AC and heat pump techs are EPA certified for the proper use and disposal of modern refrigerants.
Voted #1 By Our Customers!
Voted Best Heating and Air Conditioning in 2020 by readers of the Kane County Chronicle and the St. Charles Daily Herald!

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