
As one of its daily deals, Best Buy offers this for $40 less than Amazon. Buy Now at Best Buy

At eBay, get the Midea 5,000-BTU 150-sq ft Window Air Conditioner for $116 when you apply promo code "TAKE8OFFSALE". You'd pay $23 more elsewhere. Deal ends May 31. Buy Now at eBay

As one of its daily deals, Best Buy offers the GE 450-Sq. Ft. 10100 BTU Smart Window Air Conditioner for $280. You'd pay $89 more elsewhere. Shipping is free. Buy Now at Best Buy

Renters or homeowners without central AC who need to cool a mid-to-large room without a permanent installation will find this worth a look, and at $360 it's $100 off the list price. Apply coupon code "OOPWWHN6" for a savings of $100. Buy Now at Amazon
- Cools up to 750 sq. ft. fast with 14,000 BTU
- Run quietly at 41dB with Sleep and Silent modes
- Control remotely via WiFi app, Alexa, Google Assistant
- Install in 10 minutes; fits 20.5–50in sliding windows
- Skip frequent draining with self-evaporating cooling mode

At eBay, get the Renogy 14000-BTU Portable Air Conditioner for $272 when you apply promo code "LONGWEEKEND". That's the best price we could find by $108. Deal ends today. Buy Now at eBay

Homeowners looking to cool or heat a mid-size room without central HVAC will find the 18,000 BTU output covers spaces up to around 700-900 square feet, and the AI-assisted climate control can help reduce energy use over time. At $704, that's $296 off the $1,000 list price. Apply coupon code "CZZA18" for a savings of $296. Buy Now at cozeware.com
- 18,000 BTU cooling capacity
- 20 SEER2 efficiency rating
- 10 HSPF2 heating efficiency rating
- Operates at -13°F heating and 140°F cooling ambient
- Wi-Fi and Bluetooth built in for app and voice control

As one of its daily deals, Best Buy offers the TCL 8,000-BTU Smart Portable Air Conditioner for $350. You'd pay $20 more elsewhere. Shipping is free. Buy Now at Best Buy

Shop Memorial Day deals on portable air conditioners, fans, air purifiers, smart thermostats, dehumidifiers, and more. We've pictured this Costway 8,000 BTU Portable Air Conditioner for $225.99 ($214 off.) Shipping is free, although certain products may incur bulk surcharges. (Pickup is also available.) Shop Now at Best Buy

Apply promo code "TAKE8OFFSALE" to get this price, with Amazon and Target charging $570. A 90-day VIP Outlet warranty applies. Buy Now at eBay

As one of its daily deals, Best Buy offers this for $21 less than Walmart. Buy Now at Best Buy

As one of its daily deals, this GE 12,000-BTU window air con is down to just $350. That's the best price we've listed for a new air conditioner unit with such a high energy rating. It's also a good price if you want app and voice control on a window AC without stepping up to a more expensive inverter unit. My Best Buy members get free shipping on all orders (it's free to join).
The unit supports Wi-Fi control via the SmartHQ app, with geofencing that automatically adjusts settings based on your location, plus Alexa and Google Assistant compatibility. Buyers broadly praise the cooling performance and ease of installation; some note the unit runs on the louder side at higher fan speeds. Shop Now at Best Buy
- 12,000 BTU cooling capacity
- Covers up to 550 sq. ft.
- 3 cooling speeds, 3 fan speeds
- 250 CFM airflow rate
- Wi-Fi smart app control (SmartHQ)
- 24-hour on/off timer

A ductless mini split like this makes sense if you need to cool a single room or addition without running ductwork, and at $488 it's $120 below the list price. Apply coupon code "PRES20" for a savings of $122. Buy Now at cozeware.com
- 9,000 BTU cooling and heating capacity
- 18 SEER2 efficiency rating, 8 HSPF2 heating efficiency
- 115V electrical power requirement
- Use R32 refrigerant
- Provide smart app and voice control

Homeowners looking to cool or heat a single room without running ductwork will find this 12,000 BTU mini split a practical option, and at $480 it's $120 off the $600 list price. Apply coupon code "PRES20" for a savings of $120. Buy Now at cozeware.com
- 12,000 BTU rated cooling and heating capacity
- 20.0 SEER2 cooling efficiency rating
- 8.5 HSPF2 heating efficiency rating
- 230V power input (single-zone ductless split system)
- Model: CSAA12DT1AU-W

A mini split like this suits you if you're heating or cooling a room addition, garage, or space without existing ductwork, since it installs without any duct modifications and handles both heating and cooling from one unit. At $496, that's $124 off the $620 list price. Apply coupon code "CZDN20" for a savings of $124. Buy Now at cozeware.com
- 12,000 BTU cooling capacity and 12,000 BTU heating capacity
- 20.0 SEER2 cooling efficiency rating and 8.5 HSPF2 heating rating
- Operate on 115V power input (single-phase, 60Hz)
- Use R32 refrigerant
- Cool up to 750 sq ft coverage area

Get the Emerson Quiet Kool Camping 1,500-BTU Portable Air Conditioner for $121 with promo code "TAKE8OFFSALE". You'd pay $60 more elsewhere. Shipping is free and deal ends May 31. Buy Now at eBay

As one of its daily deals, Best Buy offers this for $10 less than Amazon. Buy Now at Best Buy
- 8000 BTU
- Cools up to 350 square feet
- 3 Cooling speeds
- Fan only function

As one of its daily deals, Best Buy offers this for $59 less than Amazon charges. Buy Now at Best Buy
- For rooms up to 350 sq ft.
- 3 fan speeds
- 5 cool settings

Homeowners looking to cool or heat a single room up to around 500 square feet without a window unit would find a mini split like this worth considering, and at $592 it's $148 below the $740 list price. Apply coupon code "PRES20" for a savings of $148. Buy Now at cozeware.com
- 12,000 BTU cooling capacity, single-zone ductless mini split system
- 20 SEER2 cooling efficiency rating
- 10 HSPF2 heating efficiency rating
- Operate heating down to -13°F ambient temperature
- Use R32 refrigerant

Renting, working in a room without central AC, or dealing with a window setup that won't fit a traditional unit, this 4-in-1 portable covers cooling, heating, fan, and dehumidifier in one box for spaces up to 350 square feet. It's currently $30 off the $230 list price at $200. Buy Now at Amazon
- 8,000 BTU cools rooms up to 350 sq ft
- 4-in-1 modes: cool, dehumidify, fan, sleep
- Removes up to 86 pints/day with continuous drainage
- Installs in minutes with 20–50 inch window kit
- Auto energy-saving and 24-hour timer lower power use

As one of Lowe's daily deals, get offers on air conditioners, air purifiers, fans, and more. We've pictured the EdenDirect 4-Speed HEPA Air Purifier for $138.52 ($51 low). Spend $35 for free shipping, or choose pickup where available to avoid the $5.99 shipping charge. Shop Now at Lowe's