Ductless mini split installation in Sheboygan County.

A ductless mini split is a heating and cooling system made of one outdoor compressor connected to one or more indoor heads by a refrigerant line set that passes through a hole about three inches across. There is no ductwork anywhere in it. Each indoor head conditions the room it is mounted in and has its own temperature setting, and because the compressor is inverter-driven it runs at partial load most of the time instead of switching hard on and off.

Yes. Cold-climate mini splits are built to keep producing heat well below zero, which is why they have become common across Wisconsin in the last decade. The Mitsubishi hyper-heating equipment we install is rated to keep heating down into the negative teens, and like any heat pump its output falls as the outdoor temperature drops, so the system has to be sized against your heating load rather than your cooling load. For a single room that is straightforward. For a whole house we will usually recommend keeping the furnace or boiler as backup.

The cost is driven by three things: how many indoor heads you need, where they have to go, and whether your electrical panel can take the circuits. A single head in an addition with a short line-set run and a spare breaker sits at the low end of the range. Four heads in an old house that needs a subpanel is a different project. We measure the load, look at the panel, and give you a written price before anything is ordered.

Multi-zone mini splits commonly run two to five indoor heads from a single outdoor unit, depending on the model. The trade-off is that those heads share one compressor, so a zone with a very small load can end up short cycling while the others are calling. Where rooms have very different loads or very different schedules, two separate single-zone systems often perform better than one multi-zone, and sometimes cost about the same.

Yes, and that is the case where ductless makes the most sense of all. Many older houses in Sheboygan and the surrounding towns were built with radiators or a boiler and have never had a duct in them. Adding ductwork to a house like that means soffits, dropped ceilings and lost closet space. A multi-zone mini split gets you cooling and supplemental heat without any of that, and the boiler stays where it is doing the job it is good at.

They are usually the cheapest way to condition a space that currently has electric baseboard, a window unit or a plug-in space heater, because a heat pump moves heat rather than making it. Against natural gas the comparison is closer and turns on your electric rate versus your gas rate. The useful way to think about it is space by space: a mini split heating a bonus room over the garage all winter will beat the electric baseboard that is in there now, comfortably.

A straightforward single-zone installation is usually a one-day job. Multi-zone systems, long line-set runs and anything that needs electrical work first will take longer, and we tell you which one yours is before we start. The time is not in mounting the equipment. It is in routing the line set cleanly, evacuating it properly and commissioning the system.

Yes. The indoor filters need rinsing every month or two while the system is running, which takes about five minutes and you can do it yourself. The indoor coil and blower wheel need a professional cleaning periodically, because unlike a furnace coil they sit out in the room and collect whatever the room has in it. Outside, the coil has to stay clear of leaves and cottonwood. A neglected head loses capacity quietly, and the first thing you notice is a room that will not hold its setting.

Mitsubishi. It is one of the two lines we carry, alongside Carrier for central equipment, and it is what we install for all ductless work. We service other brands of mini split as well, but Mitsubishi is what we put in, and it is what our technicians are trained and stocked for.