Our house has dual glazed windows with some type of gas that is supposed to keep out the heat. Is this code-acceptable, or will I need to have 10-3 w/gnd from house breaker box to outdoor disconnect? Pro Tip: its best for you to ask him to actually perform a complete Manual J assessment (they have the software program that runs it). Unless you are an advanced DIYer with extensive experience in electrical work, we strongly advise you hire a professional to get the job done. Thanks! In order to meet code, you must have a shutoff box at the location of the unit. Alternatively, run your own wire through an outdoor grade conduit so that is protected from the elements. Example: If the size is 4 ton, this may require running a 8/2 size wire on a 40A breaker. > I don't usually run conduit in a > home. Many thanks for your answer. The Goodman GSXC180601 air conditioning condenser is rated for 5 tons, which can cover up to a larger house in an ideal climate. Larger appliances like dryers, water heaters and AC units use 30-amp conductors. Wire the two hot leads to the fused connections in the box and the ground to the provided connection. For the outside unit to the inside unit you should use 14/4 mini split wire. 7. It is also critical to make sure that each indoor unit on a multi-zone system is wired to the same input that its line set is connected to. Mount the shut off box on the outside wall and connect the wires from the break box. QUICK FACTS. This would have been a good idea 20 years ago, when electricity rates were cheap, and AC units used A LOT of energy to quickly cool off the space. You would need a 1.5 ton AC unit for your house. My unit upstairs has been working fine and then the next day it wouldn’t turn on. But my question is, what wire do I need to run from the main panel to the outdoor box since I’m installing 2 multi split systems? Also, be ware of contractors who suggest that you should simply install the same size unit that you currently have. Total number of square feet is just one of these factors. Installing ductless mini splits requires a high level of electrical knowledge in order for the job to be done safely and without harm to yourself or the unit. Now that the house and the bonus room are complete I checked and the builder only ran a 12-2 wire (2 insulated wires and a bare ground). 5 Ton 14 Seer Goodman Air Conditioner - GSX140601. It was difficult to find and get the required 14-3 cable. Wire Size: 18 Gauge Standard Single Stage Heat Thermostat Standard A/C Condenser AC Contactor 24 Volt+ Fan Only Operation Common Air Conditioning 1st Stage Heat (White) 2nd Stage Heat Some AC Systems will have a blue wire with a pink stripe in place of the yellow or Y wire. Since it was not working and by flipping the switch and it works now, only way for it to not work someone had to have flipped it? For air conditioners and heat pumps, we size the wires and circuit breakers in accordance with the information printed on the label, not the simplified sizing charts that we typically rely on. We have helped countless customers shop for high-quality items -- from air conditioners, to heating units, to water heaters, and more -- and have set up this blog as an extension of our commitment to helping homeowners become informed of the things that matter to them. – number of people in your home Our electrician says he will install 220v for our 230v/208v mini split. You would need a 2.5 ton AC unit for your house. Make sure to EXCLUDE the square footage of your attic/basement/garage, unless you are using any of them as living spaces. Residential central air conditioners range in size from 1.5 to 5 tons. Yelena also has a personal interest in interior design, as well as in unique DIY remodeling projects. Residential central air conditioners come in a range of sizes from 1.5 ton to 5 ton models. Unfortunately, none of the major manufacturers make a multi-zone unit that is 115 volts. We have two Mitsubishi Mr. I don’t remember the R-Rating but it was quite a bit higher then required. If you want to get a sense of how much AC tonnage your home needs, take a look at this heat zone map and ac sizing chart. It has the same inputs as the whole house one, except it is done for each room. The larger the tons, the larger the wire size and breaker. 5 ton 14 SEER heat pump condensing unit - max 60 amps and min 34.5. Run a 230/208 volt or 115 volt* dedicated line from the main break box to the area where the shut-off box will be installed next to the unit. Air conditioning unit sizes are measured in tonnage as well as BTU (British Thermal Unit) per hour. It's going to completely depend on the unit that's being installed, but commonly it'll be 30-60 amp with 10-4 AWG wire. 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