Keystone New 12,000 BTU 550 Sq Ft Window Air Conditioner with 11,000 BTU Supplemental Heat, White
- Brand:
- Keystone
- Model Number:
- KSTHW12B
- UPC:
- 840148726765
- EAN:
- 0840148726765
- ASIN:
- B0CHZ5P2VF
- Best Buy SKU:
- 6585657
- Walmart SKU:
- 5023628571
Current pricing at $499.99 reflects recent market activity, running 0.0% below the 90-day average.
| Price Type | Price | Date |
|---|---|---|
|
Highest Price
|
$499.99 | |
|
Lowest Price
|
$425.00 | |
|
Most Recent Price
|
$499.99 |
| Price Type | Price | Date |
|---|---|---|
|
Highest Price
|
$499.99 | |
|
Lowest Price
|
$499.99 | |
|
Most Recent Price
|
$499.99 |
Tracking History: We have tracked Keystone New 12,000 BTU 550 Sq Ft Window Air Conditioner with 11,000 BTU Supplemental Heat, White since 1/25/2025. The most recent price update was on Jan 30, 2026.
Price Range: Over the past 90 days, the price has ranged from $499.99 (lowest on 1/25/2025) to $499.99 (highest on 1/25/2025). The average price during this period is $499.99.
Current Trend: No Walmart.com pricing data available for analysis.
Customer Insights: Rated 4.1/5 from 100 reviews.
I bought this exact same unit a little over five years ago and paid about half of this. I was disappointed that the price had increased so much but it still worked well to heat and especially cool my guest house for the past five years. I live in Phoenix so the temperatures can sometimes exceed 115 degrees. I had the guest house rented for the past five years and the tenants said that it kept it cool. The times I went in there to clean I noticed how quickly it brought the temperature down. It's considered a portable or wall unit, so it's not meant to last forever but it did well for the past five years and I'm hoping to get at least that long from this new one.
Well, worth the money if you need an air conditioner I'm sure you're gonna need a heater as well. I'm using the air conditioner right now. I'm not so sure about the heater part. I'm still learning well worth the money Nice quality the compressor and the motor looks really nice on the backside of the air conditioner
don't be the usual guy... READ THE INSTRUCTIONS. Save yourself some time and aggravation. Cools really well. Haven't tried the heat yet. Love the features it offers as well! and great savings!
Relatively quiet and works well. Love that there's no water dripping from the evaporator.
The measurements given online were not correct and we did not find that out until we cut a bigger hole in my house for this unit.needless to say when we measured this unit it was the exact same size as my old unit, so extra work had to be done to fix the issue. Don’t trust there measurements , measure your unit before cutting to fit what was supposed to be the measurements
A/c unit came damaged. The housing has a big dent in it. It's heavy to return.
the heat did not work and it was too noisy
it does not work how do i return this and get my money back?
does not work will not come on
Damaged %26 no response from anyone.
Detailed price history for the past 90 days
No Walmart.com pricing data available for analysis.
Third-Party Sellers prices have ranged from $425.00 (Aug 16) to $499.99 (Sep 5) over the past 90 days. Current price is close to the 90-day average of $457.14.
| Date | Price | Change | % Change |
|---|---|---|---|
| $499.99 | $+0.00 | +0.0% | |
| $499.99 | $+74.99 | +17.6% | |
| $425.00 | $+0.00 | +0.0% | |
| $425.00 | $+0.00 | +0.0% | |
| $425.00 | $+0.00 | +0.0% | |
| $425.00 | $-74.99 | -15.0% | |
| $499.99 | — | — |