Whynter - ARC-14SH

You can put the vents on horizontal sliding windows as well. As others have mentioned, most of the time you can extend the plastic window kit to cover the entire area. If not, you can order an extension or an extra window kit from most companies who sell portable air conditioners. If you're willing to put in a little extra money too, you can get a portable air conditioner that also has a built-in heat pump that can provide extra heat in the winter as well. This is what I use in my home to heat and cool the upstairs. I have a heat pump downstairs and a portable AC with a built-in heat pump upstairs. It works great! This is the one that I use: https://a.co/d/5bxFrrp You can order an extra window kit to extend the one that comes with the portable air conditioner even further to cover a larger window: https://www.homedepot.com/p/Whynter-Dual-Hose-Window-Kit-for-ARC-110WD-ARC-122DS-ARC-122DHP-ARC-12SD-ARC-12SDH-ARC-131GD-ARC-14S-ARC-14SH-ARC-143MX-ARC-WK-DUALN/334467729

Second all this, don't get a single hose unit because it starts to pull in air from the rest of the house (instead of from the outside like dual hose units) so it's less efficient. Also for portable AC you need a higher BTU rating compared to window units. Currently I am using the dual hose Whynter ARC-14S 14000 BTU for an average sized bedroom and it works well. It is really loud compared to most other portable ACs though (if that matters to you). Previously I've used other models like a single hose Sharp 11500 BTU unit, and single hose SPT 12000 BTU unit that were much weaker. If you can find anyway to use the window unit (use a plastic panel, a wood panel, anything) you should definitely use it, it's a much better value than any portable unit. Just make sure that your HOA allows it, in all the neighborhoods I've lived in window units are always banned because of aesthetics.

Yes, is the space insulated? First question to answer. Does it have windows? And which way do they face (aouth, etc)? We have a large 14000btu whynter portable ac in the garage. Its fully insulated and no windows. Works well to keep the space below 80 and around 50% humidity on most days. With that said, If i had the cash and space, a mini Split would be the way to go.

Whether you get a single- or dual-hose model (and dual is much more efficient) add an insulating blanket around the hot exhaust hose to increase efficiency. That made \~2º difference in my situation, and every degree helps! BTW, I've used a single-hose Koldfront for seven years and a dual Whynter for three, and both are still going strong.

The 12K BTU portable units work fine for even a large bedroom. I have three, all Whynter two hose. One even keeps a 600 sf finished attic with seemingly no insulation in the roof at an okay temperature on hot days. When it is over 100F out, it struggles but still the attic is tolerable if not ideal.

Have had 2 Whynter dual hose units over the past 8 years. really solid cooling machines.

I've had a Whynter dual hose AC unit running for a couple years now, works great, cools a lot and pretty affordable

The best one is Whynter and it has two hoses on it if that helps. It's black and is like waist high.

Realize this thread is old. OP, any update here? I'm having the same problem and it's driving me crazy.

I’ve owned multiple portable A/C units and have never had to drain them curious why Whynter is different.

I did this while using the heat mode and it still shut off every hour because the tank was full .

So which hose did you cap the intake or the outflow ?

If you’re going portable, go LG or Whynter. Midea’s hit-or-miss like a Tinder date..looks good online, but disappoints in person.

Any dual hose one will be more efficient and possibly more quiet. I have the Whynter Arc. It does a great job. Some people may find it noisy but it doesn’t bother me. But it IS large so not easy to lug between places.

Whynter. They’re also packed very well in the box.

Most are made in the same factory and have different labels slapped on the front, similar to other household appliances. I personally have had good experience with Whynter units. They are known as one of the more reliable brands. As others have mentioned, you should look into dual hose units. They cool the room more efficiently than single hose units by preventing negative air pressure in the room.

Single most important thing: Dual hose units maintain the pressure balance in your room. Single hose units vacuum hot air into your house. Next most important thing. Buy new. These things are consumables. I like my Whynter brand units. They've lasted far longer than I thought they would. I also like my Hisense unit. It is nice and quiet.

The whynter has a slightly higher CEER compared to the DUO (14.2 vs 13.8) for what it's worth. It does a great job of supplementing AC in my home office without of electronics.