What is a Ductless Mini Split? They can provide you maximum comfort while ensuring that you can save those pennies. (It can't go that low with a multi-head compressor if it's the only head running, but can if the net load from all heads add up to the minimum output of the compressor, or higher.) Even though mini splits use efficient inverter technology , you'll still need to make sure it will be able to handle the load requirements based on factors like: size and construction of your room, outdoor temperature range, etc. If the door is closed, the rest of the house will be unconditioned. Mini splits are ductless heating-and-cooling systems. After the kinks were worked out, we have been very pleased with the system, which is why we thought about the idea of getting a single head for the basement. Become a GBA Prime member and get full access to GBA articles, enyclopedia, videos, CAD library, and more. 2' of block is above ground, the rest is below. The mean outdoor temp in central OH, say, Columbus is north of 25F even in January. © 2020 The Taunton Press, Inc. All rights reserved. It sounds like from what you are saying, a 9k head would be sufficient and doesn't make sense to spend the additional funds on a 12k or 15k head. If adding a head to the existing system either an FH06 or FH09 will probably fill the bill and would make the most sense. Basement Indoor Air Quality Issues . Again, because basements are underground, some may lack windows entirely, or some may have small windows that are located at ground level (up high). Ok folks, another job, another question. This sleek, compact AC features 115V and 10000 BTU to deliver the blast of chilly air needed to eliminate the heat in up to 450 sq ft of space. If you calculate the load more carefully it's likely that the FH06 might still make it, but might not during rare days when it's rime-icing fog at single-digits outdoor temps, where it would be spending too much time in defrost mode. Alongside the purification of the air, the mini splits are also great at removing the well known damp basement smell. You can do 4 x 9K, 4 x 24k, or any other variation in between. Keeping excess humidity at bay is essential and often ongoing. I’m looking to add some heat to our basement so we can enjoy it more in the winter months when we can’t get outside with the kiddo. They can reduce humidity and remove most of the bacteria in the air, giving you peace of mind knowing the air that you’re breathing in is pure and oxidized. Quickly Size Your Mini-Split Heat Pump System. © Copyright 2019 Grove Heating & Cooling. If you have time to research and want to get the sizing right, I also recommend going through the greenbuildingadvisor website for info/personal education on mini-splits and insulation. To size your mini split air conditioner, the most important thing you need to know is the square footage of the room you’re looking to cool and/or heat. Although most basements are simply used for storage, there are countless other possibilities of what you could be doing with this extra space if you were able to make it more comfortable. Most basements also have installed dehumidifiers. Well, central HVAC systems require an extensive network of ducts in order to circulate air. I can further insulate the area between the studs and foam board if that is recommended, I don't have a problem with that. Life is good. Mini-split compressor in crawl space? This system can truly meet the needs for any size room: small to large. HVAC has been deemed an essential service. Each indoor unit will be capable of providing a set number of BTU’s of cooling and heating power. We would essentially only be using it in the winter and would likely only turn it on when we plan to use the space. They only require a small hole in the wall for a pipe. The U-factor of the 2" foam + foundation + drywall is going to be about U0.1 BTU/hr per square foot per degree-F. Insulating the studwall will cut that in half. Cue the reliable ductless mini split system. It sounds like from what Dana is saying, is that it is best to leave the unit running, rather than cycle it on/off when we are going to use it. They are also Energy Star certified and come with high energy-efficiency ratings. - GroveHVAC These air conditioning systems are not only capable of giving you the exact heating and cooling measures in what is essentially an unconventional space, but they are also extremely energy efficient and powerful. Their indoor air handling units can be strategically placed where space allows, and multiple indoor units can be connected to a single exterior condenser. Icarus Member Posts: 116. Can You Put a Ductless Mini Split in a Basement? The one that can modulate LOWEST with the best modulation range is the FH09 at ~1700 BTU/hr @ +47F, when married to a compressor that can also modulate that low. I have a local account here in town, so the up charge for the FH09 isn't a big deal. This install gave the homeowners total, room-by-room temperature … One system guarantees a dual effort. On the other hand, mini splits use no ductwork and only require an electrical connection. Whereas a window-mounted A/C unit would probably be unfeasible in a basement, mini splits … The mini-split works to reduce the temperatures evenly in most areas much like a heat pump would. You must be a magazine subscriber to access this feature. If you want a four zone mini split AC system and need to mix and match the BTUs on the evaporators, this is the system you’ll want. I have a partially finished basement that I am preparing to install. But if your basement is in Fairbanks AK it won't cut it, since the mid winter outdoor temperatures are too low for the compressor to operate. The systems have functions that can help you reach your desired temperature without consuming too much energy. Discussion on the installation Mitsubishi Electric ductless system in a basement bonus room in a Massachusetts home. I’ve been running just the dehumidifier which is keeping it super dry in the summer for my three level system and much cooler than I expected. We only have electric heat in our neighborhood, so I’m wondering since the basement is below grade, can we get away with a single head from Mitsubishi to heat the space? This is because they guarantee no leaky ductwork, something that often poses significant problems in most households. December 2019 in A-C, Heat Pumps & Refrigeration. Heating and cooling loads are very rarely the same number of BTUs. We would also need information on any windows and doors (sizes, glazing specs, etc.). Under IRC 2009 a continuous R10 or 2x4/R13 met code minimum for zone 5. Ductless HVAC systems provide room-by-room, year-round comfort at a more reasonable price—without tearing … If the floor above is heated with resistance electricity, and not with a heat pump, keeping the basement at 70F with the mini-split will lower total amount of power used for heating the whole house. In the lower 48 states of the US almost any insulated 1400' basement that is mostly below grade will be within the capacity range of a Mitsubishi 9K ductless head at +5F. If you’re interested in hearing more about Grove Heating & Coolings top-of-the-line Mitsubishi mini split systems, schedule an appointment with us today. Not Just For Storage. It’s a must for home improvement and a must for the wallet. Does the EER matter on a ductless mini-split? Naturally, you want your basement conversion to be comfortable, relaxing and liveable. I live in a ranch, with a basement - basement is being finished, about 900 finished square feet, mostly open concept minus a seperate basement I already have central air on the main floor, though I really dont want to bring duct work down, and would rather have a whole seperate zone we can controll on its own. Finishing the basement and looking to add a 2 zone mini split. If the condenser can’t send the air outside, where it can naturally disperse, then all that warm air gets trapped upstairs in the attic. We are open for business. Indoor units that blow cool air in the house while sucking the warm air and taking it outside. Getting the wrong capacity can be a costly mistake. Hi - I am deciding between the LG Art Cool Gallery 9000K BTU LA090HVP or their 12000 BTU LA120HVP for our basement, mostly because we like the picture option, trust the brand, and have been told by various HVAC folks that 9 or 12K will suffice, but honestly have discounted all those that have said my basement requires 18-24K min. A smaller indoor unit was installed in the basement area, with the intent that it would eventually be finished as my stereo room – it’s just a bunch of hoard storage right now. Using daily/nightly setbacks with modulating ductless systems almost always results in higher energy use. I won't use the previous contractor again due to some issues that I'd rather not get into on here. Unlike traditional systems, ductless mini splits are less prone to energy losses owing to their lack of ductwork requirement. There are DIY kits if you are a handy person, or an HVAC company can install a unit. Additionally, mini splits are mostly Energy … If that is the case, it is recommended to just leave it at 70F, or if we aren't going to be in the space, would you suggest turning the temp down to 60-64F? If the ~7000K @ 0F WAG is close to reality, the average load in January will be less than 4500 BTU/hr, and much lower during shoulder seasons: https://weatherspark.com/m/17263/1/Average-Weather-in-January-in-Columbus-Ohio-United-States#Sections-Temperature. Advantages of mini-split air conditioners. Rooms that get pretty warm can have the temperature adjusted to be more comfortable. The combination of each unit is endless. The FH09 would have a better shot at covering the load even under heavy defrost/low temp conditions with it's marginally higher capacity, and would probably cover the load at normal cold-temperature outdoor humidity conditions to well below 0F, even into negative double digits. Also, it’s so much cheaper than adding more ductwork when adding the finishing additions to your home! IRC code min for zone 5 foundations is R15 continuous insulation, so with only 2" of foam you're a bit shy of the mark. Out of 4-5 HVAC companies so far only one of them would install a ductless system and they would only install one they provided (Trane). Rooms that aren’t being used regularly can be turned off to save energy. We would need to know lots more information to help you. 13 Posts . Here are links to relevant articles: How to Perform a Heat-Loss Calculation — Part 1, How to Perform a Heat-Loss Calculation — Part 2. When you're sizing a multi-room system, click "Save & Calculate Additional Room." We are looking at the mini-split system to heat and cool a first floor that has air ducts (plus 2 returns) connected to the oil furnace in the basement and the central AC unit and a secone floor that has no heat or vents (just openings in the floors to allow the hot air to rise into the 2 story) and the use of window AC units in the summer. Although mini-split systems can be expensive, their ease of installation and versatility may make the cost worth it. Doubt that, because: The living space of the basement … I can turn it on in my basement for like a half hour and practically freeze out the place once the humidity is below 40%. R5 would even be enough in your climate. The systems are also extremely energy efficient. What's your 99% outside design temperature? More than just the additional funds, bumping up to an FH12 or FH15 would result in LOWER efficiency & comfort due to much higher minimum-modulation levels, of 3700 BTU/hr and 5150 BTU/hr respectively, (@ 47F), compared to 1600 BTU/hr for the FH06 & FH09: https://nonul.mylinkdrive.com/files/MSZ-FH06NA_MUZ-FH06NA_ProductDataSheet.pdf, https://nonul.mylinkdrive.com/files/MSZ-FH09NA_MUZ-FH09NA_Submittal.pdf, http://meus1.mylinkdrive.com/files/MSZ-FH12NA_MUZ-FH12NA-1_ProductDataSheet.pdf, http://meus1.mylinkdrive.com/files/MSZ-FH15NA_MUZ-FH15NA_Submittal.pdf. Having mini split units in each air-conditioned room allows you to better control the temperature of each room in your home. My feeling is that for a "well-insulated" 1000 sq ft basement in NJ, assuming its open floor layout with no air distribution issue, even a 9000 BTU/h mini-split may be oversized. That makes me think that it might just be cheaper and more efficient to install the mini split in the basement running on its own thermostat versus just branching ductwork from the ceiling of the first floor all the way back into the basement (especially since I don't know anything about HVAC). Basements … The rim joists have spray foam sprayed around the perimeter, and on the east wall, above grade, is where our attached garage is located. In some climates it's going to be worth putting some fiberglass or rock wool in the 2x4 wall, tight to the foam-board. Most mini splits are designed with excellent dehumidification function that can help reduce the humidity level inside your basement and prevent the growth of mold and mildew. https://energycode.pnl.gov/EnergyCodeReqs/?state=Ohio. Not all 9K Mitsubishi's are create equal, and depending on where your load numbers come out that may be important. Refrigerant lines that connect the outdoor and indoor units. The ductless mini systems boast an advanced air filtration system that guarantees excellent quality air. To provide a little more information, I'm located in Ohio, so climate zone 5, as I'm in central Ohio. Mini split … The minimum output of the GL09NA and GE09NA @ +47F is 4500 BTU/hr, which means it would be cycling rather than modulating almost all of the time, even in a US climate zone 5 climate. Unit minisplit, ~15-20k btu heating capacity our mini-split heat pump sizing to... Worth it s of cooling and heating power your energy bills also, it looks like basement walls an... In each room. of block is above ground, the first floor circulate air and... 'S going to think about is not breaking the bank R15 mini split for basement,. Of cooling and heating power purity in basements isn ’ t need to know your geographical location or zone. Get quite cold ( ~10f ) for many days a winter heat ) installed this Fall, for! The most sense to circulate air little more information, i 'm in! 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