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Internet # 331761582

Model # KSTAP051PA

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5,000 BTU (DOE) Portable Air Conditioner Cools 250 sq. ft. with Dehumidifier in White

$299.00
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  • Dehumidifies up to 2.7 pints per hour for comfort and efficiency
  • 24-hour timer allows customized cooling
  • Includes LED display & Remote Control for convenience
  • View More Details

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Product Details

About This Product

With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This 8,500 BTU ASHRAE/5,000 BTU DOE portable air conditioner can effectively cool rooms up to 200 square feet with dehumidification up to 2 pints per hour to remove moisture from the air. Perfect for small-sized living spaces like apartments, bedrooms, dorm rooms, and much more. A remote is included so you can control your cooling from across the room. Money saving features include energy saver mode, sleep mode, and a programmable 24-hour timer. This unit also offers an Auto Restart function that will automatically turn back on after a power outage to the last temperature it was set. The included window venting kit makes installation a breeze and allows you to easily remove it when you want to change rooms as well. Rolling caster wheels allow you to easily glide the unit wherever you need some comfort. You'll know when it's time to easily remove and clean the mesh filter with the Check Filter alert. Keystone not only provides a 1-year warranty but ensures that you stay cool and comfortable at a cost-conscious price.

Highlights

  • 8500 BTU ASHRAE/5000 BTU DOE cooling power
  • Cools rooms up to 250 sq. ft.
  • Dehumidifies up to 2.7 pints per hour
  • Remote control for convenient operation from anywhere in the room
  • Washable and reusable easy-access filter
  • After a power outage, auto restart resumes operating at its previous settings when power is restored
  • 4 caster wheels for easy portability
  • 24-hour programmable timer
  • 3 fan speeds
  • The window sleeve consists of two sliding panels:Panel A (with exhaust hose hole): 675 mm (26.6 in)Panel B (sliding panel): 615 mm (24.2 in)
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Product Information

Internet # 331761582

Model # KSTAP051PA

Specifications

Dimensions: H 27.76 in, W 11.61 in, D 11.54 in

Dimensions

Product Depth (in.)

11.54 in

Product Height (in.)

27.76 in

Product Width (in.)

11.61 in

Details

Air Conditioner Features

Filter Light Reminder, Sleep Mode, Timer

Appliance Category

A/Cs and Fans

BTU Cooling Rating (ASHRAE)

8500 BTU

BTU Cooling Rating (DOE SACC)

5000 BTU

BTU Heat Rating

No Heat

Color Family

White

Commercial/Residential

Residential

Coverage Area (Sq.Ft)

250 Sq.Ft

Decibel (Sound) Rating

Not Measured

Filter Type

Mesh

Heater Included

Without Heater

Hose Configuration

Single Hose

Included

Casters, Dehumidifier, Remote Control

Moisture removal capacity (pints/day)

2.7

Number of Cool Settings

3

Number of Fan Speeds

3 Speeds

Plug Type

Parallel

Refrigerant Compatibility

R-32

Returnable

7-Day

Voltage (volts)

115

Wattage (watts)

783, 833

Warranty / Certifications

Certifications and Listings

No Certifications or Listings

Manufacturer Warranty

1 Year Limited

Questions & Answers

Will this work for a 34" wide window?
ByAug 31, 2026
1 Answer | 
Answer This Question

Hello, We recommend contacting Keystone directly at keystonecs@keystone-products.com as they would be best equipped to provide the most accurate information. Thank you!

By|Sep 6, 2026


    Is this product efficient for a greenshuse which is 150 sq. ft?
    ByJul 8, 2026
    1 Answer | 
    Answer This Question

    This unit is designed to cool spaces up to 250 square feet and can remove up to 2.7 pints of moisture per day.

    By|Jul 9, 2026


      Looking for the dimensions of the panel for the window. What size windows does it fit?
      ByMay 4, 2026
      1 Answer | 
      Answer This Question

      Thank you for your question. Please reach out to Keystone customer support at Keystonecs@keystone-products.com for further assistance.

      By|May 7, 2026


        is the heat from hot gas or from an element?
        ByJul 8, 2025
        1 Answer | 
        Answer This Question

        Thank you for your question. Please reach out to our team at Keystonecs@keystone-products.com for assistance.

        By|Jul 8, 2025


          How quiet is this UNit
          ByJul 4, 2025
          1 Answer | 
          Answer This Question

          Thank you for your question. Noise Level (High 56.5//Med 49.5/Low 42.5) Hope it helps. Thank you

          By|Jul 4, 2025


            Does the unit turn off when the set temperature is reached? Is the window kit included?
            ByJul 4, 2025
            1 Answer | 
            Answer This Question

            Thank you for your question. The compressor will turn off once it reaches the set temperature but the fan will continuesly running. The unit will not turn off. Yes, the window kit is included. Hope it helps. Thank you

            By|Jul 4, 2025


              is th window kit and exhaust hose included
              ByJul 4, 2025
              1 Answer | 
              Answer This Question

              Yes, the window kit and the hose are included. Hope it helps. Thank you

              By|Jul 4, 2025


                What size window does this work for? Need window dimensions.
                ByJun 20, 2025
                1 Answer | 
                Answer This Question

                Thank you for your question. Please feel free to contact our team at keystonecs@keystone-products.com to further assist you.

                By|Jun 20, 2025


                  Viewing 1-8 of 12

                  Customer Reviews

                  4.4 out of 5

                  • 4.4 out of 15 reviews
                  • 0% recommend this product
                  Filter by:
                  Showing 1-10 of 15 reviews
                  AMAZING!!!!!!
                  [This review was collected as part of a promotion.] It’s a perfect size for a small/medium size room even then I open up the door to let it cool off the other room so the house can be cooled off the installation was so simple and easy it’s not very noisy at all my husband and little one can’t stay out the room due to it cooling the room down very fast we love it would recommend and get another one for the living room
                  by
                    Powerful and reliable cooling in a compact unit —
                    [This review was collected as part of a promotion.] 🔥 Keystone Portable AC Review – Cold, Quiet, and Powerful I picked up the Keystone 115V Portable Air Conditioner, and it’s been a total lifesaver for hot days. This unit is a powerhouse — it cools my space down fast and keeps it comfortable without being noisy. The remote control is super convenient, and the built-in modes like sleep and energy saver make it a smart addition to any small living space. ✅ What I love: • Cools quickly – perfect for bedrooms or small apartments. • Easy to use remote and timer functions. • Dehumidifier built-in to cut down on that sticky air. • Window kit included — setup was quick. • Rolls smoothly across the floor. ⚠️ Only downside: This thing is heavy — if you’re thinking about using it upstairs, be prepared. It’s not easy to carry up and down, but once it’s in place, it performs like a beast. ⭐ Final Verdict: Despite the weight, this unit is a 5-star performer for cooling small spaces. Set it up and let it work — you won’t be disappointed!
                    by
                      Great portable AC unit!
                      [This review was collected as part of a promotion.] Great portable AC unit that packs a punch! I know it's meant for 250sq foot but I feel like it does a great job even with a bigger space! Very easy to install and the noise level is not that bad! Highly recommend this AC unit!
                      by
                        Portable AC unit
                        [This review was collected as part of a promotion.] This portable air conditioner works great in my garage, especially during warmer months. It’s not loud and cools off the area fast and efficiently. Comes very handy and works great in small spaces. This product was gifted to me by insfluenster in exchange for my honest review
                        by
                          Works great!
                          [This review was collected as part of a promotion.] This Keystone portable air conditioner is simply amazing! Its small and thin, so it fits into the corner of the room nicely and barely takes up space. It keeps my entire living room cool, and comes with a remote for easy usage.
                          by
                            Staying cool just got easier
                            [This review was collected as part of a promotion.] Perfect for smaller spaces that need air conditioning. Everything you need is in the box ready to go so installation was a breeze. Stays cool and isn’t noisy.
                            by
                              Highly recommended!
                              [This review was collected as part of a promotion.] I recently tried the Keystone 115-Volt White Vented Portable Air Conditioner, and overall, I’ve been very pleased with its performance. This unit is designed to cool spaces up to 250 sq ft, and it does that efficiently and consistently—perfect for our upstairs bedroom that never seems to cool down despite the central air. This AC really shines when it comes to cooling. Within minutes of turning it on, I could feel a noticeable difference in room temperature. Even on humid days the room remains cool and comfortable. The unit has a clean, modern white finish that blends in well with most décor. It’s fairly compact for a portable AC and has built-in caster wheels, making it easy to move from room to room. It is vented, so proper placement near a window is necessary, but the included installation kit made setup quick and straightforward. The remote control is a big plus—very user-friendly and allows for convenient adjustments without having to get up. The control panel on the unit itself is also intuitive, with a clear display and settings for fan speed, temperature, and mode. Like most portable units, it does produce some noise, but it’s not disruptive. I’d compare it to the sound of a standard box fan—noticeable but tolerable, especially if you’re using it during the day or for white noise at night. It includes a dehumidifier mode, which helps pull excess moisture from the air—great for muggy environments. The air filter is washable and easy to access, which is a nice bonus for maintenance. For anyone needing to cool a smaller space without investing in a full HVAC system or permanent window unit, the Keystone 115V portable AC is a solid choice. It’s effective and easy to use. This will definitely give me peace of mind to know our guests will be comfortable when visiting.
                              by
                                Easy to use
                                [This review was collected as part of a promotion.] Absolutely loved this air conditioner the portability factor of this product makes it easy to install anywhere you want, noise level is so low and it is energy efficient. It personally great definitely recommend it!
                                by
                                  Love This Portable Air Conditioner
                                  [This review was collected as part of a promotion.] Keystone Portable Air Conditioner With Remote I am so grateful and feel so blessed to be able to have gotten this this it is so beautiful and it couldn't have come at a better time this was easy to install and is really easy to use I absolutely love it this and the noise level is low and performs so well has 8500 BTU ASHRAE/5000 BTU DOE cooling power cools rooms up to 200 sq ft dehumidifies up to 2 pints per hour to remove moisture from the air has a remote control for convenient operation from anywhere in the room this is perfect for small size living spaces like apartments bedrooms dorm rooms and much more this has money saving features like energy saver mode sleep mode and a programmable 24-hour timer this has a washable and reusable easy access filter and 4 caster wheels for easy portability this is perfect for the summer this came at just the right time
                                  by
                                    Watch out summer we have a great AC.
                                    [This review was collected as part of a promotion.] The nose level is very minimal, installing was a breeze, this thing cools down the room very quickly. We are ready for those very warm summer days/nights. Greta product.
                                    by
                                      Showing 1-10 of 15 reviews

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                                      Product Snapshot

                                      Ideal for customers wanting efficient cooling and dehumidification for rooms up to 250 sq. ft.
                                      Ideal for customers who want efficient cooling up to 350 sq. ft., ensuring comfort with 4 modes and quiet operation.
                                      Ideal for customers who want smart control and efficient 3-in-1 cooling.
                                      Ideal for customers who want efficient cooling and air purification for 250 sq. ft.

                                      Cooling Capacity (BTU)

                                      8500 BTU ASHRAE
                                      5000 BTU (DOE SACC)
                                      6, 000 BTU SACC
                                      10000 BTU

                                      Room Size Coverage

                                      250 sq. ft.
                                      350 sq. ft.
                                      250 sq. ft.
                                      250 sq. ft.

                                      Dual-Hose Design

                                      Dehumidification Function

                                      Smart Controls