Ductless Systems are Easier than Ever to Maintain


Ductless Systems are Easier than Ever to Maintain

The earliest ductless HVAC systems earned the reputation of being high maintenance compared to their ducted conventional counterparts. In decades past, that may have been true. The earliest ductless systems were typically only single-zone systems and were limited in performance. Only once multi-zone ductless systems were introduced with heating capability did contractors start considering them for replacing central ducted systems.

Today’s ductless options are vast, with multiple styles of indoor units and multi-zone systems, such as Mitsubishi Electric Zoned Comfort Solutions®, now able to provide whole-house heating and air conditioning. With multiple indoor units to factor in, homeowners may assume more servicing is needed than traditional systems. However, many ductless systems end up saving homeowners money in the long-term in utility bills and servicing costs compared to ducted systems.

Longevity and Reliability

One major appeal of modern ductless units is their longevity. These systems have been engineered to last with the same level of reliability and high-quality performance from day one to year 20. The systems’ reliable operation translates to less frequent maintenance needs and concerns for repairs, saving homeowners money and stress.


Mitsubishi Electric ductless systems are equipped with INVERTER-driven compressor technology, so they use only the precise amount of energy needed to heat or cool a space. This makes them up to 40 percent more efficient than fixed-capacity ducted systems.

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The systems’ INVERTER-driven compressors run smoothly, increasing speed when needing more performance and lowering speed when conditions are at set point. Traditional, fixed-speed compressors, on the other hand, cycle on and off to reach and maintain set points, essentially running at either 100 percent or 0 percent without middle ground. This start/stop cycle leads to greater wear and tear on the equipment and therefore, more frequent servicing. Think about driving your car. If you are consistently flooring the gas pedal and slamming on the breaks, your engine components will need replacement sooner than a car that is driven at a steady speed with gradual starts and stops.


Mitsubishi Electric ductless units use a two-step filtration process, which not only keeps the air you are breathing clean and healthy, but also helps prevent dirt and dust from clogging your units and causing them to malfunction. Proper care and maintenance are a crucial part of the filters’ performance.

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Fortunately, cleaning and maintaining the ductless units’ filters could not be easier! The units are designed so the filters are easy to remove, wash, pat dry and reinstall. Homeowners simply open the access door, take out the screens, clean them and then slide them back into place. Making filter maintenance easy for homeowners improves the lifespan of both the filters and the units.

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The filters are not the only easily accessible part of the indoor units. Unlike ducted systems, which commonly require technicians to enter attics, crawl spaces or mechanical closets to service indoor units or ductwork, ductless systems’ air handlers are in the common, more accessible areas of the home.

Many of these units, including the EZ FIT™ Recessed Ceiling Cassette, are designed so they can be serviced from below. This allows technicians to diagnose, troubleshoot and resolve issues more quickly and with less disruption to the home.

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No HVAC system is maintenance-free, but the modern ductless systems make maintenance easy, compared to conventional systems. Through advancements in efficiency, filtration and unit design, Mitsubishi Electric has made it simple for homeowners and contractors to keep their systems in good working condition.

To learn more about Mitsubishi Electric maintenance-friendly heat pump options, please visit http://mitsubishicomfort.com or click on Mitsubishi Electric tab in this website. If you have additional questions, contact All Weather Mechanical Inc. today and we will be happy to answer questions or provide you with a free in-home estimate at your convenience!

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