Customer reviews from Sampling program
Keystone - Core 230V 400 Sq. Ft. 9,000 BTU Smart Mini Split Air Conditioner 10,000 BTU Heater 21 SEER2 - White
Average customer rating
4.8
(9 Reviews)
Rating breakdown 9 reviews
5 Stars
7
4 Stars
2
3 Stars
0
2 Stars
0
1 Star
0
Customer Reviews for Keystone - Core 230V 400 Sq. Ft. 9,000 BTU Smart Mini Split Air Conditioner 10,000 BTU Heater 21 SEER2 - White
Customer Rating
4
Good for smaller areas
on October 6, 2026
Posted by: BritneyS
[This review was collected as part of a promotion.] Easy to use and a great value for the price. I’m impressed so far. It provides strong, consistent cooling, operates relatively quietly, and has been a good addition to smaller spaces. I would definitely recommend it to anyone looking for an affordable mini unit with good cooling performance. It's easy to operate, and I really like having the ability to adjust the temperature and fan settings to my preference. I haven't been able to test the heat yet since it hasn't been cold enough.
Written by a customer while visiting Sampling program
Customer Rating
4
Really cools
on October 6, 2026
Posted by: ShannonW
[This review was collected as part of a promotion.] This Keystone mini split unit is perfect for our above garage bonus room. It’s the perfect coverage size to keep the area cool or warm. The unit was easy to install and quite durable. There is little noise or vibration sounds.
Written by a customer while visiting Sampling program
Customer Rating
5
Works Well!
on October 5, 2026
Posted by: DanielleA
[This review was collected as part of a promotion.] I am so happy to have this split AC/Heat unit! We didn’t have any heat going to our house and now I can easily take the chill off in the mornings. Set up was pretty simple and it’s even easier to use than i expected. I am also extremelly happy it does both AC and Heat. It wont work for the whole house but is perfect for our living room
Written by a customer while visiting Sampling program
Customer Rating
5
Quiet and efficient unit
on October 4, 2026
Posted by: CynthiaP
[This review was collected as part of a promotion.] I am very happy with the keystone core mini split.
It came well packaged with clear installation instructions.
It is a great size for my bedroom and it is nice and quiet when I use it.
It is well worth the money because it will reduce my power bill while keeping us more comfortable.
It came well packaged with clear installation instructions.
It is a great size for my bedroom and it is nice and quiet when I use it.
It is well worth the money because it will reduce my power bill while keeping us more comfortable.
Written by a customer while visiting Sampling program
Customer Rating
5
Great unit!
on September 27, 2026
Posted by: MeaganO
[This review was collected as part of a promotion.] We have a sunroom that is almost unusable in the summer or winter due to the extreme heat and cold. This unit is perfect for that room. It was easy to install and simple to use. It makes the room cool in minutes. I am excited to use it in the winter to warm the room up. Now my sunroom is useable all year long!
Written by a customer while visiting Sampling program
Customer Rating
5
Strong
on September 21, 2026
Posted by: MandeepK
[This review was collected as part of a promotion.] This is great! It is very strong and very easy to use as well! I like the size of this as it is not bulky and fits well in most rooms! I would highly recommend this brand.
Written by a customer while visiting Sampling program
Customer Rating
5
Overall great product!
on September 7, 2026
Posted by: FelyshaG
[This review was collected as part of a promotion.] The mini split is user friendly. It come with a remote that is easy to understand. It is also wifi compatable and I can control it with my phone as well.so glad I have the mini split during these HOT days! I can now feel comfortable being nice and cool. It also has heating as well. Wich is a huge pluse! I can't wait to be nice and warm on these cold winter nights.
Written by a customer while visiting Sampling program
Customer Rating
5
Great for small rooms
on September 6, 2026
Posted by: NorahA
[This review was collected as part of a promotion.] It’s a great option for smaller spaces up to 400 sq. It cools the room quickly, runs quietly and it is convenient alternative to a traditional AC. I love it in my garage to cool it down in Houston hot days
Written by a customer while visiting Sampling program