Discount Air Conditioner Deals

At eBay, get the refurb Hisense 8,000-BTU DOE Smart Portable Air Conditioner for $200. It's the best price we could find for a refurb by $30. A 2-year Allstate warranty is included. Buy Now at eBay

A compact wall-mounted air cooler that suits small rooms or workspaces where you want to free up floor space, it's $99 less than Amazon is charging for a similar one. Import charges of $19.87 and a payment processing fee of $2.08 apply.

New Alibaba customers get shipping for $6.66; otherwise, it starts at around $27.  Buy Now at Alibaba

The Home Depot carries a wide range of portable air conditioners covering small bedrooms up to large open spaces over 700 sq. ft. Prices start around $221 for compact units and climb toward $680 for larger, feature-packed models with heating and dehumidifying functions. Several units are discounted, including one Edendirect model at $449.61, down 41% from $762.04. Shoppers can filter by room size, BTU rating, and features like built-in heaters or dehumidifiers to match a unit to their space. Shop Now at Home Depot

This 12,000-BTU mini split system is $391.49 at Walmart.  That's a $59 low.  Shipping is free. Buy Now at Walmart

Small bedrooms or home offices without central air are a good fit for this one, since 10,000 BTU covers roughly 300-450 square feet without permanent installation. Walmart has it for $250, which is $20 off the $270 list price. Buy Now at Walmart

This unit cools, dehumidifies, and circulates air from a single portable device, making it a practical fit for renters or anyone who can't install a window or split AC system. At 14,000 BTU, it's sized for larger rooms, so you won't need to run it constantly on high just to keep up. Buy Now at Amazon

Worth stocking up on if you're managing allergies at home, since MERV 11 catches finer particles like pet dander and pollen without straining most standard HVAC systems, and having six on hand means you won't need to reorder for a while. Buy Now at Home Depot

Handy for HVAC techs or DIYers replacing a failing dual run capacitor on an AC or heat pump unit, and it's currently $3.71 off the list price at Amazon. Buy Now at Amazon

This mini split system suits homeowners looking to heat and cool four separate rooms independently without ductwork, with 22.5 SEER2 efficiency that helps keep energy bills down. Home Depot has it for $2,711, about $143 off the $2,854 list price. Buy Now at Home Depot

Sizing up your HVAC's next filter change is easy when you've got four on hand, and MERV 11 strikes a solid balance for catching dust, pollen, and pet dander without straining your system's airflow. Anyone with allergies or pets at home will notice the difference over standard fiberglass filters. Buy Now at Home Depot

Anyone dealing with seasonal allergies or pet dander will want the MERV 11 rating here, since it captures smaller particles than a basic filter without choking off airflow like the highest-rated options can. The 6-pack covers roughly a year of monthly changes, so you're not restocking every couple months. Buy Now at Home Depot

Keeping a spare motherboard on hand makes sense if your AC's compressor control board fails and you're trying to avoid a full service call, especially once the unit is out of warranty and parts get harder to source. Newegg carries this specific model, which helps if you've already confirmed it matches your external unit's specs. Buy Now at Newegg

Update: The price has changed to $396.62 since this was originally published.

The U-shaped design lets you close your window on top of the unit instead of around it, which cuts down on outside noise and gaps compared to standard window units, making it a solid pick if your bedroom window faces a busy street. It's $70 off the $450 list price at Amazon. Buy Now at Amazon

Small to mid-sized rooms without central air are where this unit earns its keep, especially in spaces where installing a window unit isn't practical or allowed. It rolls from room to room, so renters and apartment dwellers get a cooling option that moves out just as easily as it moved in. Buy Now at Home Depot

Homeowners who'd rather change filters four times a year instead of monthly will appreciate this 5-pack, and MERV 11 catches more dust and allergens than the basic filters HVAC systems ship with. Buy Now at Home Depot

Handy for anyone who packs their portable AC away each winter, since it keeps dust and pests out and makes finding the unit again next summer a lot less annoying than digging through a closet. Buy Now at Home Depot

Replacing a faulty control board is often cheaper and faster than calling in a technician, and this EC09117 board is a straightforward fix for anyone whose AC unit is unresponsive or stuck on the wrong settings. It's a practical option for DIYers comfortable with basic appliance repair who want to avoid a full system replacement. Buy Now at Newegg

Two zones off a single outdoor unit make sense for cooling or heating separate rooms without ductwork, and the 21 SEER2 rating keeps energy costs down compared to older mini split systems. Buy Now at Home Depot

Keeping the exhaust hose covered helps block heat transfer and condensation drips, which matters if your portable AC sits in a finished room rather than a garage or basement. It's $4.71 (about 19%) off the $24.70 list price. Buy Now at Amazon