Another A/C Thread - Ducted Split Units

Tracking.

With how awesome the minisplit systems are, all variable speed stuff sounds pretty awesome to me.

I think I'm going to do my whole house thay way. Easy DIY, very efficient.

I hate ducts

Just based off my little bit of experience I will be doing the same. I don’t have a large home so when building in 99 we just put a single 5 ton unit. It has just not been enough in this current heat wave. Runs all day to hold 76 degrees. Planning to remove about 500 square feet from the ducted system and move it to a single 36000 btu cassette mini split. That will bring my AC load to 8 tons. Eventually as the 5 ton unit ages out, I will replace with additional mini splits.

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The condensation handling

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So with the current units I have, the drain line just runs out the wall with the refridgeration line. I never thought about the cassettes but I have to imagine the actual evaporator extends high enough into the ceiling to do the same. I will have two refridgeration lines over 20’ and have no plan to try to run the drain line that far. I will plumb it just like a traditional unit with one line tying into an air vent for house drain lines and a second(tattle tale) at nearest eave point. What’s insane is all these units are over 20 seer and while heat pumps, you can over engineer and still cost will be way below traditional ducted system. Add the savings for each room having individual thermostat control, and your electricity bill should reduce significantly. I am an empty nester with a 4 bedroom/3 bath home that I have to heat and cool in its entirety. I looked at the damper systems and those would cost almost as mini splits after the installation charge.

Ive gotten two units added on to certain areas of the house. Both units are Gree. One was added to an upstairs area and that unit included ducts to go to two rooms and a bathroom. It is 18k btu and seems to handle the rooms just fine. Theyre just moderate sized bedrooms. The other is a 24k btu unit and its ductless and has 1 wall mount for a rec room. The rec room is a good size around 800 sq ft with vaulted ceilings and that unit gets that room like the arctic if I crank it up. They are very quiet.

They have been running a little over a year to the day and I havent had any trouble with them minus a drain line that was the hvac guy's fault.