HAVN › Home Comfort › Cowsar™ Window AC
Summer Sale
From $389.90 at cowsarofficial.com — same unit, same sealed box. We buy retailer overstock and pass the savings.
$389.90
Or 4 interest-free payments of $42.48 with Shop Pay
Authentic Cowsar™ · overstock pricingReal footage from real windows: it rides the sill like a saddle — half in, half out. That’s the whole trick, and it changes everything.
Every loud, heavy part of an air conditioner lives in the compressor half. A saddle design hangs that half outside, below the glass.
The base is U-shaped. It rides the sill — half inside, half out.
Compressor and hot coil hang outside, below the window line.
The sash closes onto the unit. Side screens fill the gaps.
Only the quiet half stays in the room: 38–45 dB.
| Hose portable | Classic window unit | Cowsar™ | |
|---|---|---|---|
| Real cooling power | Loses cold through the hose | Yes | Yes — 10,000 BTU |
| Floor space | Takes a corner of the room | None | None |
| Your window | Blocked by the hose panel | Blocked all summer | Opens and closes freely |
| Install | Hose, panel, clamps | Two people, brackets, screws | One person, no tools |
| Where the noise lives | In the room with you | On the glass | Outside, below the glass |
| The view | A hose | A metal box | Your window |
A saddle unit is not a better portable. It’s a different category.
We buy Cowsar™ retailer overstock in the original sealed box and pass the savings on. Nothing refurbished, nothing altered.
If you can lift a laundry basket onto a shelf, you can install this. One person, no drill, no bracket, nothing bolted to the house.
Step 1 — Set it
Step 2 — Steady it
Step 3 — Close & plug
The wall and the closed window sit between you and the compressor. What stays inside is the fan — and little else.
Sleep mode dims the panel and steps the fan down as the room settles. The baby-monitor test: it passes.
Plus Auto, Energy Saver and Sleep · 24h timer · remote (16.5 ft) + touch panel · washable filter with a cleaning reminder
Real owners, real windows — photos straight from their reviews.
Excellent · TrustScore 4.8 out of 5 · based on 1,317 reviews
Nice and quiet
Love it, nice and quiet and easy to deal with.
Verified buyer
The lake view stayed
There’s a lake out in front of our cottage — we chose this unit because the wonderful view would not be blocked. It immediately cut the humidity and cooled the place to a comfortable temperature. So glad we found this product!
Verified buyer
The noisy part is outside
It cools the room really fast, and the best part is how quiet it is — the noisy part is outside the window, so the room stays peaceful at night. Sleek, simple, and I installed it myself.
Verified buyer
The house finally hit 72
Central air went out, so I’m transitioning to window units. First time I think the house has ever reached 72 during the summer. Very easy to set up.
Verified buyer
Quiet, and it cools
I really like it. It’s quiet and does cool it off.
Verified buyer
Home office, all day
Replacing an older unit that had started making loud noises. Installation was easy because everything needed was included in the box. Really impressed by how quiet it runs — it cools the room fast, and the automatic mode adjusts on its own.
Verified buyer
Very cold, extremely quiet
The air conditioner is very cold. Extremely quiet and won’t make any noise.
Verified buyer
The warm corner, solved
My first window unit — we needed one because the office corner of our bedroom runs much warmer than the rest of the house. It’s working exactly for what we need.
Verified buyer
Perfect for our needs
We are very pleased with our purchase. Perfect for our needs.
Verified buyer
A lifesaver
This unit has been a lifesaver with how hot our room gets.
Verified buyer
More home comfort from HAVN.
Yes — 100% authentic Cowsar™ product: same model number, same UPC, same sealed retail box, same accessories. HAVN is an independent US retailer; we don’t modify the product in any way.
We buy overstock inventory from US retailers at end-of-season clearance and pass the savings directly to you. No middleman, no markup — the same sealed unit for $220 less. Overstock pricing is valid while stock lasts.
It fits standard double-hung and single-hung windows 24″ to 48″ wide, with an opening of at least 16″, a sill at least 8″ off the floor, and a clear wall up to 11″ below the sill outside. If you’re not sure, email a photo of your window to support@byhavn-co.com and we’ll confirm before you buy.
No. The U-shaped base rides the sill, so the weight rests on the window frame itself — balanced inside and out. Two finger-tight thumb screws steady it, the side screens fill the gaps, and the foam strips seal the seam. There is no drill anywhere in the process.
Yes — that’s the point of the category. The lower sash slides up and down over the inside half whenever you want fresh air, and closes onto the unit when you want cold.
The lower sash rests closed against the top of the unit, and the side screens close the sides. If you want it locked — ground floor, or just peace of mind — a standard sash lock or window wedge (a few dollars at any hardware store) locks the sash at exactly that height, the same way you’d secure a half-open window. Thirty seconds to fit, no tools.
The two adjustable side screens and the foam seal strips close the gaps beside and above the unit — they’re in the box, and they’re part of the 60-second install, not an extra step. No open seams, no highway for mosquitoes, no warm draft leaking in.
The outside half is built to live in the weather, like any window unit — rain is part of its job description. For the off-season, most owners lift it out (two minutes, same as the install) or fit a standard AC cover.
38 dB on Sleep mode, around 45 dB at high fan. The compressor — the loud half of any AC — hangs outside below the glass, with the wall and the closed window between you and it.
No. Both sizes run on a standard 115V household outlet — the same one your lamp uses.
10,000 BTU covers bedrooms and living rooms up to 450 sq ft — that’s most rooms in most homes. Go 12,000 BTU for large or open-plan spaces up to 550 sq ft. If you’re torn between the two for the same room, the 10,000 does the job.
The front filter slides out and rinses under the tap. The panel reminds you when it’s time — a minute a month, no parts to buy.
Two years on the compressor and electronics, and 30 days to change your mind for any reason. If it arrives damaged, send us a photo and we replace it or refund you — ours to solve, not yours to prove.
