If you’ve decided a ductless mini split or multi split system is right for your project, make sure you maximize your investment by sizing a ductless system correctly. Now, what would happen if you installed a mini split with a BTU rating that does not match the size of the room? To help you make a smart buying decision, this article discusses the important things that you should know, consider, and be aware about when it comes to proper sizing of a mini split air conditioner.
These are the advantages ductless systems offer if they are sized correctly: To determine the size of the ductless system needed for the project, you need to determine the heating/cooling load of the zone or zones. It means, that the BTU ratings are just general estimates, which are determined based on these factors. The design of a mini-split system contributes to its quietness. However, as a rule of thumb, an … Is the room a converted attic, or converted basement space? The best rule of thumb is to multiply the room size (in sq ft) with 20-30 to get a BTU value. It’s able to fine-tune heating and cooling due to its variable refrigerant flow (VRF) system.
The bigger the number, the more energy-efficient the system is. Due to its energy-efficiency, size, ability to zone different areas of a home, and easy installation process, mini-splits have become a popular choice for home heating and cooling.
So, what’s the best size for your air conditioner to achieve more efficiency? Unlike central air or furnaces, mini-split heat pumps are a lot quieter to operate. Because it’s more likely that each room in your home may have different sizes, the size or rated capacity of individual air handlers may also vary. Make sure to pay attention to SEER and HSPR ratings, branding, and BTU output to recommend the best system for your customer. The truth is, the size of your unit must be proportionate to the size of the space. Worse, short cycling forces your system to use more energy and sustain stress. Mini-split heat pumps, or ductless mini-splits, is a compact heating and cooling system that allows homeowners to control temperatures in homes or individual spaces.
However, rule-of-thumb does not take into consideration how many people will normally occupy the room.
SEER and HSPF ratings are crucial energy-efficiency metrics for heating and cooling.
Now, what if your air conditioner is too small? The general rule of thumb is to add 600 BTUs for each additional person who uses the room on a regular basis. In fact, sizing guides are now very common.
Mini-split heat pumps are a great option for customers and provide an enhanced level of flexibility.
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For example, if you have a 12,000 BTU air handler in your living room, a 18,000 BTU air handler in your kitchen, and a 9,000 BTU air handler in your master bedroom, you may be able to build this system with a 30,000 BTU condenser.
Air conditioners, including ductless mini split systems, are built in different sizes. For smaller, less prominent brands, Pioneer, Daikin, and Kilmaire are good options. When HVAC experts conduct a load calculation for a specific space, what they normally come up with is the estimated amount of BTU that is needed to cool or heat the room. This doesn’t mean, however, that proper sizing cannot be established. Basically, when we’re talking about tons, what we mean is the amount of heat (or BTU) that an air conditioner can remove in a space every hour.
When installing a ductless AC solution to your home, your sizing consideration should factor in the size of the room for single-zone application or each of individual rooms for a multi-zone configuration. Mini-splits make less noise as air travels through due to its less turbulent air.
They provide a lot of versatility that many other systems don’t have, as it frees up a lot of space usually taken up by ductwork. As for HSPF, most air conditioners are rated between 8 to 10.
Why Buy From a Mitsubishi Electric Contractor.
Well, let’s say that your air conditioner is too big for your space. Electricity is needed to power the components that manipulate and move the refrigerant, rather than burning fuel for heating like a furnace. Because a mini-split system is for cooling and heating, each rating is as important as the other. HSPF stands for Heating Seasonal Performance Factor, and it’s the same thing as SEER, but used for heating instead of cooling. They’ve been in the industry for years and have an excellent reputation for mini-split systems. We also share that information
Based on what was discussed earlier about tons and BTUs in relation to the size of an air conditioner, this could also mean that your air conditioner packs more tons than necessary to cool a smaller space. Work closely with your HVAC contractor to ensure the heating/cooling load of the zone or zones are correctly calculated.
To put it simply, your outdoor unit may have a different but enough size to complement the size of each indoor air handler that are installed in different rooms inside the house. If you are installing a ductless multi split (multiple zones), you may well benefit with home-efficiency upgrades of air sealing with caulk and weather-stripping, and boosting or replacing insulation if needed. Calculating the load means determining the correct amount of cool or warm air that is needed to establish a comfortable temperature or maintain that desired that temperature inside the room.
A professional home energy evaluation can determine if home-efficiency upgrades are recommended to save energy and boost comfort. For accurate sizing, you can always tap the help of an HVAC expert who will calculate your cooling or heating requirements and determine the right size of the mini split air conditioner for your home. According to rule-of-thumb sizing charts, the ductless system should be 6,000 BTUs.
This is about 30% more expensive than central air, minus the ductwork. Knowing the size of each unit will guide you to properly install a correctly sized system. This means that having a unit with a higher rated capacity or higher BTU rating doesn’t assure you that you’re actually getting the right size.
So, when choosing a ductless mini split, it is important to make sure that its BTU rating is suitable to the size of the room where you will install the system. Contrary to popular belief, bigger doesn’t always mean better when it comes to air conditioners. If you want the very best service, product and assistance, please contact us to locate a licensed Mitsubishi Electric Contractor in your area. Key Factors to Keep in Mind When Choosing a System for Your Customer. It is downright impractical because it would not even be able to cool much of the space in your home even if it runs longer. Compared to other systems, mini-splits generally offer cost and energy savings over time; however, the initial installation process can be expensive, with an average price of about $1750 per ton (12,000 BTU per hour) of cooling capacity.
When helping your customer choose a new AC option or upgrade, don’t hesitate to mention mini-split heat pumps.
These are allowable because with some applications, you wouldn't need full capacity out of each zone 100% of the time.
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