Dust off keyboards, camera gear, and PC fans without the waste of disposable canned air, which makes this a better long-term pick if you're cleaning electronics regularly. At $30.99, that's $45 (about 59%) off the $75.99 list price. Apply coupon code "VYJF06KP" for a savings of $45. Prime members get free shipping. Buy Now at Amazon

Keep this in your trunk for flat tires, sports balls, or air mattresses, since it hits 150 PSI without needing a cord or outlet nearby, and it's currently $11.60 (40%) off the $28.99 list price. Apply coupon code "FXDAQGUZ" for a savings of $11.60. Prime members get free shipping. Buy Now at Amazon

New Woot customers pay $11 for this Zuzee Z1 tire inflator via promo code "INFLATE". That's $19 less than you'd pay at Amazon. The 20,000mAh battery also works as a power bank for charging phones. Prime members get free shipping. Coupon ends November 19. Buy Now at Woot! An Amazon Company

This ZOPOM portable tire inflator is $5 off the $26 regular price with the on-page coupon. It's the best price we could find by $19. It shuts off automatically at the pressure you set and has a built-in LED light for nighttime use. The listing says it can fill a standard car tire from 0 to 35 PSI in under 5 minutes. Shipping is free for Prime members. Buy Now at Amazon

Skips the canned air entirely, using a rechargeable motor instead to clear dust from keyboards, PC fans, and camera gear, which saves money long-term if you clean electronics often. At $30, that's $50 (63%) off the $80 list price via coupon code "CPXRIEJQ". Deal ends November 11.  Buy Now at Amazon

Home Depot offers the Ryobi One+ 18V Cordless High Pressure Inflator for $24.97.  That's a $15 savings.  Shipping is free. Buy Now at Home Depot

Dust off keyboards, vents, and camera gear without the hassle of canned air running out mid-job, since this one recharges and keeps spinning; it's $15 off the list price right now. Apply coupon code "RZ69ZK0A" for a savings of $15. Free shipping applies for Prime members. Buy Now at Amazon

At Amazon, get the Fanttik X9 Pro Portable Tire Inflator for $45 when you clip the on-page coupon. It's the best price we could find by $8. It can inflate a compact car tire from 30 to 35 PSI in about a minute and reaches a maximum pressure of 150 PSI, with auto shutoff once it hits your preset level. Buy Now at Amazon

This cordless air duster handles keyboards, PC fans, and camera gear without the mess of canned air, and it's rechargeable so you're not buying replacements each time. At $22, that's $18 off the $40 list price. Apply coupon code "7TJVDEHV" for a savings of $18. Buy Now at Amazon

At Amazon, clip the on-page coupon to get this Smartour Cordless Tire Inflator for $28. It's the best price Amazon has charged for this model. It includes four nozzle adapters for cars, bikes, balls, and inflatables, plus a preset auto-stop feature that shuts it off once the target pressure is reached. Buy Now at Amazon

Home Depot offers the DeWalt 3-Way Manifold with Plug & 3-Piece Coupler for $18.99.  That's a $7 low and its best price.  Shipping is free. Buy Now at Home Depot

Worth a look if your AC system's compressor has failed and you need a direct replacement that won't require a bunch of modifications to install, since it's built to match OEM specs. It suits DIY mechanics and shop owners alike who want a reliable repair without paying dealership prices. Buy Now at Amazon

Handy for anyone building or repairing compressed air lines, since having ten straight unions on hand means you're not stuck mid-project waiting on a single replacement fitting. The push-to-connect design skips the need for thread sealant or extra tools, which simplifies things if you're not especially experienced with air line plumbing. Buy Now at Amazon

Anyone doing their own AC repairs or refrigerant line work will want this on hand, since it pulls a deep vacuum to remove moisture and air before a system is recharged. It's suited to home mechanics and HVAC hobbyists rather than one-time DIYers, given it's a tool you'll reach for on every AC job going forward. Buy Now at Amazon

Handy for topping off car, bike, or sports equipment tires without hunting for an outlet, since it's cordless and hits up to 140 PSI; Walmart has it for $18.96, $12 off the $30.99 list price. Buy Now at Walmart

Keeping a jump starter with a built-in air compressor in your trunk means you can handle a dead battery or a low tire without calling anyone, which matters most if you drive an older car or do a lot of road trips. At $41.39, that's $57.61 off the $99 list price. Buy Now at Walmart

Handy for topping off tires or inflating sports equipment without hauling out a bulky shop compressor, especially if you're working on cars or bikes in a garage without built-in air lines. It's $64 off the $140 list price, bringing it down to $76. Buy Now at Walmart

Update: The price has changed to $21.99 since this was originally published.

Handy for quickly inflating pool floats, air mattresses, or camping gear without manually pumping by hand, making it a good pick for anyone who frequently deals with inflatables around the house or on trips. At $21.84, it's only 15 cents off the $21.99 list price, so there's no real urgency tied to the discount. Buy Now at Amazon

Update: The price has changed to $49.99 since this was originally published.

Keeping this in your trunk makes sense if you've ever had to track down a gas station air pump for a slow leak, since it inflates tires on its own power with no cord needed. It's $10 off the $60 list price at Amazon right now. Buy Now at Amazon

Update: The price has changed to $21.99 since this was originally published.

Handy for quickly inflating pool floats, air mattresses, or camping gear without manually pumping by hand, making it a good pick for anyone who frequently deals with inflatables around the house or on trips. At $21.84, it's only 15 cents off the $21.99 list price, so there's no real urgency tied to the discount. Buy Now at Amazon