How long do MRCOOL mini splits last?

Mini split air conditioners – also known as ductless heat pumps/systems – are a popular cooling and heating solution for homes and businesses. MRCOOL is a leading brand of DIY mini split systems that offers affordable zoned temperature control without the need for extensive ductwork.

Whether you’re considering installing a MRCOOL mini split system or if you already have one in your residence, you may be wondering: how many years can I expect it to last?

Let’s unpack everything you need to know about the lifespan and durability of MRCOOL mini splits.

If you need any replacement parts for your air conditioner, you can use your model number to find what you’re looking for at AppliancePartsPros.com. We also have thousands of free DIY troubleshooting and repair guides to help you fix your AC yourself.

What’s the average lifespan of a MRCOOL mini split?

With proper installation, responsible use, and regular maintenance, you can expect a MRCOOL mini split to last approximately 12-15 years. Some systems may even last up to 20 years before they need to be replaced.

There are several variables that affect the lifespan of these units, including:

• Frequency of use: Mini splits that are used every day will naturally wear out faster than those that are only used occasionally. For example, units installed in vacation homes may last longer.
• Climate and exposure: Mini splits exposed to extreme weather elements year-round tend to have shorter lifespans. If the units are used through hot summers and cold winters, they work harder than those in more temperate climates.
• User maintenance habits: Lack of regular maintenance can significantly reduce a mini split system’s lifespan. Mini splits require light preventative care and an annual professional checkup to run their best. You should also follow all manufacturer guidelines when using and caring for your specific unit.
• Installation quality: If the unit isn’t installed correctly, it may void the warranty or cause early breakdowns that need expensive repairs or replacements. Whenever possible, get a licensed HVAC technician to install a mini split system.

How to maximize the lifespan of your MRCOOL mini split

While MRCOOL mini split components are built to last, you as a user play an important role in getting the most out of your unit. Check out these tips for extending the service life of your system to 15-20 years or longer:

Get the right size unit

Purchasing a MRCOOL mini split with insufficient or excessive capacity for your space could negatively impact its lifespan down the road. If the unit is the wrong size, it will have a tougher time maintaining the correct temperature without constantly switching modes or overworking.

While there are free British Thermal Unit (BTU) calculators online, it’s best for a licensed, experienced technician to size and situate the system based on the dimensions, structure, efficiency and occupancy of your unique space.

Install it correctly

Some MRCOOL systems can be installed yourself, but it’s recommended – especially if it’s your first time – to hire a licensed HVAC technician to install the unit. This can prevent you from voiding any warranties associated with the unit, damaging the unit or injuring yourself.

Clean the filter(s)

Dirty filters make mini split systems work much harder, which can waste energy and cause parts to break down prematurely. MRCOOL filters should be cleaned at least once per month and replaced at least once a year. If you have activated carbon filters, they may need to be replaced every 3-6 months if they show excessive debris or have a strong odor.

Don’t skimp on annual professional service

While most MRCOOL mini split installations are DIY, you’ll need to have a certified HVAC technician perform annual check-ups after the first year. Professional tune-ups allow pros to thoroughly inspect, test, adjust and service parts that you can’t check or handle yourself like fan motors, drain lines, wiring and refrigerant levels. Though this means you have to spend money on a service call, it can save you money in the long run by preventing premature breakdowns and more expensive, complicated unit problems.

Keep the surrounding area clean

Always keep the area around the exterior mini split unit free of debris from plants, accumulated leaves, snow, and other blockages that reduce airflow. Obstructions make the unit work harder and can lead to earlier system failures over time.

Use auto mode

Programming your MRCOOL mini split to automatically switch between heating, cooling, dehumidifying and fan modes based on the current set temperature can reduce wear over time. Auto mode prevents the compressor from turning on and off as frequently compared to manually switching between modes.

Signs your MRCOOL mini split needs to be replaced

MRCOOL mini splits tend to be very durable when they’re properly maintained and used as designed by the manufacturer. But after several years of heating and cooling, there may come a time when they need to be replaced.

Here are some common indicators a mini split system may need to be replaced:

Significantly elevated energy bills

If your mini split constantly runs but struggles to reach and hold set temperatures, this lowers its energy efficiency. Replacement parts can’t salvage a failing system.

Frequent repairs

While some units may eventually need minor parts like capacitors or relays replaced, recurring issues involving the compressor or coil leaks signal the system has reached its limit.

Abnormal noise & shutdowns

Unusual rattling, banging, buzzing or grinding noises point to some internal wear, which can cause sudden system shutdowns. This likely indicates an imminent total failure.

Temperature inconsistency

If surrounding temperatures fluctuate widely from the set point on the thermostat with no explanation despite adjustments or repairs, then the unit’s internal parts are likely worn and can no longer function correctly.

Visible housing damage

The lifespan of exterior mini split parts is affected by exposure to intense sunlight, wind, rain, salt air, pollution and fluctuating temperatures. Gradual housing damage like rust and corrosion accelerates system degradation.

Replacing an aging mini split before it completely fails can prevent you from being stuck without air conditioning or heat when you need it most. As modern AC technology continues advancing, a new unit can also deliver much-improved comfort and energy efficiency.

More information

Thanks for reading! We hope this guide helped shed some light on the lifespan of MRCOOL mini split units and what you can expect from them over time. By taking care of your unit, you can get the most out of your mini split for over a decade.

If you need replacement parts for any of your appliances, check out AppliancePartsPros.com, where you can enter your model number to find exactly what you’re looking for. Most orders arrive in two business days, and we have thousands of free resources to show you how to install your new parts.

You can also reach our award-winning customer service team at 1-877-477-7278, chat with a pro on our website and watch thousands of free video tutorials on our YouTube channel.

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