Mini Split

The Best Mini Splits

The newly released mini-split by MrCool, the DIY Easy Pro® 24k BTU Ductless Mini-Split Heat Pump Complete System, sold out within a month! Some of the features that made this mini-split so desirable are: 

• Up to 18 SEER
• Gold Fin® condenser: corrosion resistant - live on the coast? Don't worry; the condenser is built to resist long-term corrosion
• Energy-Efficient DC Inverter

Next is the E Star DIY 4th Gen 36k BTU Ductless Mini-Split Heat Pump Complete System - 208-230V/60Hz. The 4th Gen 36 BTU E Star is one of the most powerful single-zone systems offered in the DIY Series. Its robust features include: 

• Up to 18 SEER
• Variable-speed DC inverter compressor technology cuts operating costs
• R-410A environmentally friendly refrigerant

Top 5 Benefits of Installing a Mini Split System

Installing a mini split system in your home or office can offer numerous advantages. Here are the top five benefits you can expect :

1. Energy Efficiency

Mini split systems are highly energy-efficient, allowing you to save on your utility bills. These systems use inverter technology to adjust their output based on the room's needs, consuming only the necessary amount of energy. This precision control can lead to significant cost savings over time.

2. Zoned Comfort

One of the most appealing features of mini splits is their ability to provide zoned heating and cooling. You can set different temperatures for various rooms, ensuring personalized comfort throughout your space. This targeted approach eliminates the need to heat or cool unused areas, further enhancing energy efficiency.

3. Easy Installation

Unlike traditional HVAC systems, mini splits don't require extensive ductwork. This makes the installation process quicker, less invasive, and more cost-effective. The indoor units can be mounted on walls or ceilings, while the outdoor unit can be placed in a convenient location outside your home.

4. Improved Air Quality

Mini split systems filter and dehumidify the air, helping to remove allergens, dust, and other pollutants. This can lead to improved indoor air quality, benefiting those with allergies or respiratory issues. Additionally, the absence of ductwork eliminates the potential for dust and mold accumulation often found in traditional HVAC systems.

5. Quiet Operation

Modern mini split systems are designed to operate quietly, with noise levels as low as 19 decibels for some models. This near-silent operation ensures a peaceful environment, whether you're sleeping, working, or simply enjoying your space.

What is a Mini Split Air Conditioner?

A mini split air conditioner is a ductless heating and cooling system that allows you to control the temperature in individual rooms or zones of your home. It consists of an outdoor compressor unit connected to one or more indoor air-handling units, typically mounted on walls or ceilings.

What are Mini Splits?

Mini split systems are very energy efficient since each zone has its thermostat, allowing you to heat or cool only occupied areas. They are also exceptionally quiet, as the outdoor unit typically sits outside and away from living areas.

How Mini-Split AC Units Work

To understand how mini-split AC units work, it's helpful to first understand the basic components of an AC system. Like a traditional central AC unit, a mini split AC system has two main parts: an outdoor compressor/condenser and an indoor air handler.

Outdoor Compressor Unit

The outdoor compressor unit contains a condenser coil, a compressor, and a fan. The compressor pressurizes the refrigerant vapor and condenses it into a liquid by removing its heat. The now liquid refrigerant flows into the indoor air handler unit.

Indoor Air Handler Unit

The indoor air handler unit contains an evaporator coil, a fan, and an expansion valve. When the liquid refrigerant flows into the evaporator coil, it absorbs heat from the indoor air as it evaporates into a gas. The evaporation process cools the indoor air. The fan then blows the cooled air into your living space.

• The cycle repeats as the gas flows back to the outdoor compressor unit.
• A mini-split system is very efficient since the refrigerant is evaporated and condensed in a continuous loop.
• The main difference between a mini-split system and a central AC system is that mini-splits have components in each room instead of ductwork throughout the building.

Mini split AC units provide an innovative, customizable way to cool your home efficiently. By understanding the basic components and refrigeration cycle, you can better appreciate how these units keep you comfortable all summer long.

How Efficient are Mini Split Systems?

Mini split air conditioners are highly efficient, often boasting SEER (Seasonal Energy Efficiency Ratio) ratings of 20 or higher. This means they can significantly reduce energy consumption and lower utility bills compared to traditional central air conditioning systems.

Can Mini Splits Both Heat and Cool?

Yes, many mini split systems are designed for both heating and cooling. These heat pump models can efficiently warm your home in winter and cool it in summer, providing year-round comfort with a single system.

Are Mini Splits Difficult to Install?

While professional installation is recommended, mini splits are generally easier to install than traditional HVAC systems. They require only a small hole in the wall for the conduit, which houses the power cable, refrigerant tubing, and condensate drain. This makes them ideal for retrofitting older homes or adding climate control to new additions.

How Long Do Mini Split Air Conditioners Last?

With proper maintenance, mini split systems can last 15 to 20 years or more. Regular cleaning of filters and outdoor units, along with professional servicing, can help extend their lifespan and maintain optimal performance.

Calculating Mini-Split Size

Alternatively, you may calculate the room's volume (in cubic feet) and divide it by 1000 to get how many tons of AC you need for effective cooling. Along with room size, other considerations include window location and the amount of sun-facing walls.

Most people will likely acquire ACs between 1 and 1.5 tons for household usage when considering average room size. The larger 2 to 5-ton ACs are required for workplaces and commercial environments.

A 1-ton mini split can cool an area up to 100 square feet, a 1.5 ton can cool a space up to 180 square feet, and a 2-ton mini split can cool up to 240 square feet, according to the rule of thumb.

Mini Split Sizing Chart 

Here is a sizing chart for Mini Splits by ton.

Matching BTU Rating to Room Size

The size of the area that has to be heated or cooled can also influence the micro split system's BTU rating. For instance, a 1,000 Sq Ft space will need 12,000 BTUs, whereas a bigger 1,200 SQ Ft area could need 18,000 BTUs. It's crucial to pick a micro split system whose BTU rating is suitable for the area that has to be heated or cooled.

SEER and HSPF Ratings for Mini Split

When choosing a micro split system, it's also critical to consider its efficiency rating. A higher SEER rating, which stands for Seasonal Energy Efficiency Ratio, denotes, for instance, that the system will consume less energy and hence be less expensive to operate. A higher HSPF rating, or Heating Seasonal Performance Factor, indicates that the system will use less energy to heat the area, reducing winter energy expenses.

Why Do Mini Split Systems Cost So Much to Install

Here is a breakdown of why mini split costs so much to install. 

The Mini Split Unit Itself

The mini split unit accounts for much of the total installation cost. These HVAC systems are more complex than a typical window AC unit, with components like an outdoor compressor, indoor air handlers, and refrigerant lines connecting everything.

The Compressor

The compressor, located outside, pumps the refrigerant through the system. More efficient, variable-speed compressors typically cost more upfront but can save you money in the long run through lower energy bills. The size and power of the compressor also depend on the number of indoor units it will support.

Indoor Units

You'll need one or more indoor units mounted on walls or ceilings inside your home. Wall units are popular, but ceiling cassettes can be a good choice to avoid impacting wall space. The number and type of indoor units impact cost. Multiple zones, each controlled separately, provide more customization but increase the price.

Refrigerant Lines

Refrigerant lines carry cooled refrigerant between the outdoor and indoor units. Installers have to charge the lines with refrigerant properly, purge them of air, and ensure no leaks. Refrigerant line sets and the installation process add significantly to the total cost.

Labor

Professional HVAC installers charge $50-$100 per hour, and installing a mini-split system typically takes at least 8-16 hours for a small home system. The time includes assessing your needs, ensuring the optimal placement of indoor and outdoor units, mounting the units, connecting refrigerant lines, wiring, and testing to ensure proper operation.

HVAC Skills

Mini-split installations also require the knowledge and skills that the average DIYer lacks. The refrigerant lines must be properly connected, evacuated, and charged according to the manufacturer’s specifications. The electrical wiring must also be correctly connected to avoid issues like short circuits or fires. It’s best left to the professionals unless you have HVAC certifications and experience.

How Much Does it Cost to Install a Mini Split

The installation cost of mini-splits can vary significantly depending on the complexity of the project and the region. On average, you can expect to pay between $2,000 and $7,000 for the installation of a single-zone mini-split system. This cost includes labor, materials, and any necessary permits. For multi-zone systems, the installation cost can range from $3,000 to $10,000 or more.

How Much Does a Cost to Run a Mini Split

On average, the monthly cost of running a mini-split system can range from $50 to $150, depending on the size and efficiency of the unit. Regular maintenance, such as cleaning or replacing filters and inspecting the system, is essential to ensure optimal performance and longevity. While maintenance costs are relatively low, it's recommended to budget for yearly maintenance to keep your mini-split running smoothly.

Why are Mini Splits so Expensive

Due to their advanced technology and benefits, mini-splits are often more expensive than traditional HVAC systems. These highly energy-efficient systems allow for zoned heating and cooling, which can significantly reduce energy costs over time. However, installing mini-splits can be more complex and require professional expertise, adding to the initial cost. 

How Long Do Ductless Mini Splits Last?

The average lifespan of a ductless mini split system is 15-20 years, depending on the brand and model. Proper installation and maintenance can help extend the lifespan.

Installation

Installing your mini split by a licensed HVAC technician is key to ensuring maximum efficiency and longevity. Improper installation can reduce the lifespan by up to 5 years. Technicians are trained to size the system for your space correctly, properly seal and insulate the lines, position the air handler and condenser, and test to ensure optimal performance.

Maintenance

Perform regular maintenance to keep your mini split running well for as long as possible. This includes:

• Inspect and clean air filters once a month or as needed. Clogged, dirty filters reduce airflow and efficiency, which can shorten their lifespan.

• Vacuuming vents and air intakes regularly to remove built-up dust and debris.

• Having a technician perform professional servicing once a year which includes inspecting components, testing refrigerant levels and system performance, cleaning coils and drainage pipes, and making any necessary repairs or replacements.

• Replacing remote control batteries at least once every 3-6 months to ensure proper function.

• Not obstructing vents or air intakes which prevents efficient airflow.

Repairs and Replacements

As the mini split ages, certain components like filters, fans, refrigerant, and coils may need to be repaired or replaced. To minimize damage, it's best to have a technician inspect the unit if you notice any decrease in performance, strange noises, leaks, or error codes. Replacing major components like the compressor or condenser coils can be expensive, so if numerous parts begin failing, it may make more sense to replace the entire unit.

How to Clean Mini Split

Cleaning a mini-split system is essential for maintaining its efficiency and extending its lifespan. Over time, dust, dirt, and debris can accumulate in the filters and internal components, reducing airflow and causing the unit to work harder than necessary. Regular cleaning helps ensure that your mini split provides optimal heating and cooling, maintains good indoor air quality, and operates quietly. In this guide, we’ll walk you through the steps to properly clean your mini split, keeping it in top condition and ready to perform at its best.

How To Clean Mini Split Filter

Cleaning the filter of your mini-split system is an important maintenance task that helps ensure efficient operation and improves air quality. Here’s how to do it:

1. Turn Off the Unit: Before starting, make sure the mini-split system is turned off to avoid any accidents.

2. Open the Front Panel: Locate the front panel of the indoor unit. Gently lift or slide it open, depending on your model, to access the filters.

3. Remove the Filters: Carefully slide out the filters. Most mini-split filters are designed to be easily removed without tools.

4. Clean the Filters:

   • Vacuum Cleaning: Use a vacuum cleaner with a brush attachment to remove dust and debris from the filters.
   • Washing: If the filters are soiled, rinse them under lukewarm water. Avoid using hot water or harsh chemicals, which can damage the filter material. Gently shake off excess water.

5. Dry the Filters: Allow the filters to air dry completely before reinstalling them. Do not use a hair dryer or other heat sources to speed up drying, as this could damage the filter.

6. Reinstall the Filters: Carefully slide them back into the unit once the filters are dry.

7. Close the Front Panel: Secure the front panel back in its original position.

8. Turn the Unit Back On: Power the mini-split system back on and ensure it’s operating smoothly.

How AC Coils and Fins

It may sound intimidating, but cleaning mini-split coils and fins doesn't have to be a hassle. With a few simple tools and about an hour of your time, you can get the job done quickly and efficiently. Here's a step-by-step guide you can follow:

• Gather your cleaning supplies: Have a soft-bristled brush, mild detergent, bucket and water, clean cloths or towels, and compressed air.
• Turn off the power: Before you begin any maintenance or cleaning work on HVAC equipment, make sure to turn off the power. This will prevent accidental shock or other risks associated with working around electricity.
• Clean the coils: Start by gently scraping with the brush to remove stubborn dirt. Then, use your soapy water/detergent mixture to break down any remaining grime. Wipe down the coil surfaces with a damp cloth until all dirt is cleared away.
• Rinse with water: Use a low-pressure garden hose or a bucket to remove all soap residue from coil surfaces completely.
• After cleaning, use compressed air at low pressure to dry out excess moisture between coil fins for better heat transfer efficiency.

How Much Value Does a Mini Split Add to a Home?

Installing a mini-split system can add considerable value to a home, often increasing its resale appeal by up to 5-10%. These systems are highly energy-efficient, reducing heating and cooling costs by 30-40%, which is attractive to buyers looking for long-term savings. The ability to control temperatures in individual rooms or zones provides personalized comfort, a feature that many modern buyers prioritize. Furthermore, mini-splits require no ductwork, simplifying installation and preserving the aesthetics of older or architecturally unique homes. This combination of energy efficiency, cost savings, and enhanced comfort can make a home more competitive in the market and justify a higher asking price.

Do Mini-Splits Increase Home Value? Yes!

Mini-splits are an excellent choice for new construction or if it's finally time to replace that broken old AC unit. They save space by discarding bulky ducting and simultaneously reduce your utility bill—a serious win-win. But do they increase the value of your home?

Let's look at the factors for why a ductless system could be a wise investment for you.

1) Ductless Mini-Splits are Ductless

Starting with the obvious, the ductless nature of mini-splits is seen as a massive plus to potential home buyers. The saved space can increase the home's usable square footage and is generally a much better aesthetic. 

2) Accessibility

Ductless owners rave about the convenience of air conditioning control in different zones. Because there is typically one air handler per room – providing zone heating – you don't need to walk all the way to a central thermostat when you want to change it. It can be a very nice feature if you forget to turn off the AC before bed!

3) Mini-Splits have Higher Efficiency

Ducting naturally causes heat loss. Because mini-splits do not have any, they're estimated to be at least 30% more efficient than central air conditioning. Furthermore, new AC units can have a peak Seasonal Energy Efficiency Ratio (SEER) of 26, but new ductless systems can reach 42 – nearly twice as efficient SEER. Now the higher efficiency units are less powerful, and you can't usually expect that high of efficiency for smaller spaces. But if appropriately sized, mini-splits can pay for themselves in just a couple of years – recovering the installation cost and adding a huge selling point for future buyers. 

4) Mini-Splits allow Flexible Installation

Ductless systems have two parts, one or more indoor units and an outdoor unit. A very pragmatic aspect of mini-splits is that they provide incredible flexibility regarding where to put the units. There are recommended conditions, such as airflow access, but they allow many more installation options than their ducted counterpart overall. This makes them great for renovations, especially when dealing with ducting is unreasonable or impossible. Plus, they're perfect in rooms of any size, from small to large 

5) Easier Maintenance

Because the systems have fewer parts, mini-splits are considered easier to maintain. There is no ducting to worry about dust and particle collection; most regular maintenance includes just changing the filter. Since the indoor air handlers are meant to be accessible, they are easy to manage when needed. 

6) They’re a 2-in-1 System

Almost all mini-splits provide heating and cooling, whereas traditional AC units only provide cooling and use a separate furnace to provide heating through the same ducts. This, and the lack of ductwork, is what makes mini-splits such a compact, simple design. 

7) Mini-Splits are Quieter

Mini-splits relegate their operational noise to the outside unit, keeping the noise out of your home. They are considered significantly quieter than central air systems, and the sound can be hidden away because of the flexibility in placing the outdoor condensing unit out of sight, out of sound, and off your mind.

8) Greater Control

The zoning feature of multi-zone mini-splits allows you to control different temperatures in different rooms – letting you keep the popular areas warm and the vacant areas cold. This is part of the energy efficiency capability ductless provides and the convenience of individual zone control.

Do Mini Splits Decrease Home Value?

Mini-split systems generally do not decrease home value; they often have the opposite effect. These systems are known for their energy efficiency, which can lower utility costs by 30-40%, making them an attractive feature for potential buyers. Additionally, their ability to provide zoned heating and cooling increases comfort and flexibility in the home. Unlike traditional HVAC systems, mini-splits are ductless, simplifying installation and reducing potential maintenance issues. While some buyers might prefer central HVAC systems, the modern efficiency and convenience of mini-splits typically enhance a home's appeal rather than detract from it. Therefore, installing a mini-split system is more likely to maintain or even increase a home's value rather than decrease it.

Where Should You Not Install a Mini Split?

Mini-splits should be installed in areas that avoid direct sunlight. The intense heat can damage the unit and reduce its efficiency and lifespan.

South-facing walls

The southern exposure receives the most sunlight during the day. Install the unit on an east or west-facing wall instead.

Unshaded areas

Without shade from trees, buildings, or overhangs, the mini split will be in the sun for most of the day. Look for a spot that will be shaded for at least part of the day.

Near heat sources

Don't install the mini split near external heat sources like fireplaces, furnaces, or ovens. The excess heat will make the unit work harder and reduce performance.

While mini splits can be a great way to add cooling to an area without ductwork, choosing the right location is key. Do some planning to find a spot that avoids intense, direct light and excess heat so your mini-split can work as efficiently as possible.

How Long Does It Take To Install A Mini Split