Discount Air Conditioner Deals

Good for cooling or heating a single room without ductwork, and WiFi control means you can adjust it from your phone instead of walking over to a wall unit. At $499.99, that's $80 off the $579.99 list price. Apply coupon code "E3RBGRS5" to save. Deal ends November 15.  Buy Now at Amazon

Works well for cooling and heating a single room like a bedroom or home office without ductwork, and the 18 SEER2 rating means lower energy use over time. At $399.99, that's $150 (27%) off the $549.99 list price. Apply coupon code "TJRX2E8K" to save. Deal ends November 17.  Buy Now at Amazon

Cooling a room or small living space without ductwork is the main draw here, and the 20 SEER2 rating means it'll run efficiently even on high-use days. At $899, that's $300 (25%) off the $1,199 list price. Apply coupon code "E93PZ649" to save. Deal ends November 15.  Buy Now at Amazon

Folks managing nonstandard furnace sizes know how hard these filters can be to track down, and having three on hand means you're covered for a while without reordering. Buy Now at Home Depot

Keeping an older AC unit running often comes down to replacing small components like this one instead of the whole system, and this drive board works with standard 5-wire fan motors across various brands. Newegg carries it for those handling their own HVAC repairs who need a direct replacement part on hand. Buy Now at Newegg

Small apartments or rooms without central air benefit most here, since it cools, dehumidifies, and runs as a fan depending on what the weather calls for. The wheeled design also makes it easy to move between rooms instead of committing to one spot all season. Buy Now at Amazon

Your HVAC system takes this odd 18" x 30" x 4" size, and having four on hand means you can swap filters every few months without scrambling to find a replacement. MERV 8 handles everyday dust and pollen, making it a reasonable fit for most households without restricting airflow. Buy Now at Home Depot

Anyone in a dry climate looking to cool a larger home without the electric bill a central AC unit brings should take a look at this, since evaporative coolers pull in fresh outside air instead of recirculating it. The down-draft design and 3,800 CFM output suit whole-house setups rather than single rooms. Buy Now at Home Depot

Worth a look if your setup involves tight mechanical space, since the condensing unit's compact cascade design handles the cooling load without demanding a full-size footprint. It suits homeowners replacing an aging unit who need reliable output in a utility closet or basement rather than an open mechanical room. Buy Now at Home Depot

Swapping filters every month or two is easier when you've already got a 5-pack on hand, and MERV 8 covers standard household dust and allergen filtering without restricting airflow. Home Depot has this size in stock if your system calls for 17" x 20" x 2". Buy Now at Home Depot

Worth grabbing if your HVAC unit takes this oddball 17x22x2 size, since it's a pain to find on short notice when your old filter wears out. MERV 8 handles everyday dust and pollen without restricting airflow the way higher-rated filters can. Buy Now at Home Depot

Update: The price has dropped to $348.95 since this was originally published.

This portable unit suits anyone cooling a single room without window-unit installation, and at $349.95 it's $90 off the $439.98 list price. Buy Now at Walmart

Renters and apartment dwellers without central air tend to get the most out of this one, since it cools, dehumidifies, and circulates air without any permanent installation needed. Buy Now at Amazon

Keeping a spare on hand saves you from an AC repair call when the control board fails, especially if your unit's original is hard to source locally. It's a straightforward swap for anyone comfortable with basic appliance repair rather than hiring an HVAC tech. Buy Now at Newegg

Anyone with a furnace system sized for this non-standard 13" x 20" x 4" slot will want to keep a couple on hand, since MERV 8 filters catch everyday dust and pollen without restricting airflow the way higher-rated filters can. The 2-pack means you're not reordering every month if you're on a standard 90-day replacement schedule. Buy Now at Home Depot

Works well for cooling a single room without the installation hassle of a window AC unit, and it doubles as a fan and humidifier for year-round use. The current price of $42 is $65 off the $107 list price. Buy Now at Amazon

Renters and apartment dwellers without central air can cool a single room without any installation, since it just needs a window for the exhaust hose instead of permanent ductwork. The 14,000 BTU output handles larger rooms or spaces with poor insulation better than smaller units in the 8,000-10,000 BTU range. Buy Now at Amazon

Worth a look if you're heating or cooling a single room or addition without existing ductwork, since the 17 SEER2 rating keeps efficiency reasonably high without a major install. Home Depot carries this unit for homeowners who want a self-contained system rather than extending central air to a new space. Buy Now at Home Depot

Homes with pets or allergy sufferers will notice the difference with a MERV 11 rating, which catches finer particles than the standard MERV 8 filters most HVAC systems ship with, and the 2-pack means you're not reordering again in a month. Buy Now at Home Depot