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Fall Heat Pump Maintenance Tips

Finishing up fall prep around the house?

Don’t forget about a heat pump tune-up.


Was your home comfortable and cool all summer long, even when the hot weather was at its worst? You probably have your Mitsubishi Electric heat pump mini splits to thank. But just because your air conditioning system seemed to be working effortlessly doesn’t mean it wasn’t working hard. Just like any other HVAC system, your mini splits need regular service and repair to keep operating at their maximum efficiency.

So, with the fall bringing in relief from the heat and giving your mini splits a breather, now’s the best time to schedule heat pump service to make sure your mini splits — both the indoor air handler and the outdoor condenser unit — handle the winter as well as they did in the summer.

Heat Pump Mini-Split Tune-Up Checklist

Inspecting and tuning up your mini-split system is a complex process. Yes, there are relatively straightforward fixes, such as:
Replacing your air filters to allow for proper air flow
Clearing debris around the outdoor condenser unit to clear obstructions and allow for clear drainage
But the majority of maintenance tasks should be left to an experienced contractor like Kearney. Here are just some of the areas of your heating and cooling unit we’ll check in a mini-split heat pump maintenance call.

Coil cleaning

Deep cleaning your indoor and outdoor evaporator and condenser coils will help your mini split operate at its most efficient and should be at the top of any heat pump repair and maintenance checklist. Dirty indoor and outdoor coils can translate to higher energy bills, expensive repair calls, and a shortened lifespan for your heat pump system. According to a report from Southern California Edison, dirty condenser coils can reduce a unit’s cooling capacity by as much as 40%.

Refrigerant Inspections

Also important to the operation of your mini split are your refrigerant levels. The same SCE report shows that low refrigerant levels reduced cooling capacity in an HVAC system by as much as 20%. A trained service technician should be annually checking the refrigerant lines, coils, and flare connections for potential leakage.

Compression Testing

Your heat pump’s compressor circulates refrigerant between the indoor and outdoor units, which is essential to the heating and cooling process. Compression components like electronic expansion valves (EEVs), digital inverter-driven compressors, and other sensors should be inspected and tested to ensure optimum performance.

Kearney HVAC Is Your Go-To for Mitsubishi Electric Heat Pumps

A heat pump is a cost effective and energy efficient heating and cooling system when it’s working correctly, but it’s a complicated piece of equipment that needs to be properly looked after to perform properly. The best way to guarantee that your mini splits will continue to provide you and your family with years of heating and cooling is to schedule regular maintenance from professional service technicians.

New to mini-split heat pumps? Kearney HVAC is a Mitsubishi Electric Diamond Contractor, which means we can offer you exclusive benefits like a 12 year product warranty and extended labor warranty. Kearney is also a qualified contractor for Mass Save, and homeowners are eligible for up to $10,000 in rebates towards the cost of their mini-split heat pump installation.

A heat pump tune-up should at the top of your fall to-do list. Call 978-388-0845or contact us today to schedule an appointment.