Shopping for sleep comfort can go one of two ways: fix the adjustability system in your current air bed, or swap in a brand-new king mattress with cooling foam. The first path leads to a used Select Comfort Sleep Number air pump; the second leads to a 14-inch gel-infused king memory foam mattress. Which one makes sense depends on the condition of your current setup and whether you want a complete new surface.
Quick Verdict
If your existing Sleep Number-style adjustable air bed has a dead pump, the used Select Comfort Air Bed Pump Model NXT03DR is a direct replacement that can restore adjustability. If you need a complete new sleep surface, the 14-inch Gel-Infused King Memory Foam Mattress gives you a full king-size mattress with cooling features. The right choice depends on whether you're repairing a system or starting over.
Price and Condition Comparison
| Aspect | Select Comfort Air Pump NXT03DR | 14-Inch Gel King Mattress |
|---|---|---|
| Listed Price | USD 324.99 | USD 736.99 |
| Condition | Used | New |
| What's Included | Air pump, wireless remote, power cord, 2 hoses | Complete king mattress with cool-touch nylon cover |
| Key Feature | Adjustable firmness, dual-chamber operation | Gel-infused memory foam, cooling cover |
Where Each Product Wins
The Select Comfort Air Pump NXT03DR wins if you already have a compatible air bed and need to bring back its adjustability without replacing the whole bed. It's a dedicated replacement part that works with the existing system. The 14-Inch Gel-Infused King Mattress wins if you're looking for a complete, brand-new sleep surface. It's a full king mattress that skips the separate pump and chamber setup entirely.
Product Notes
Select Comfort Sleep Number Air Bed Pump Model NXT03DR
This used pump is the practical pick for anyone with a queen or king Select Comfort/Sleep Number bed that's lost air pressure or stopped responding to the remote. The package includes the wireless remote, a power cord, and two hoses-one for each chamber-so you can set the left and right sides independently. The model number NXT03DR points to a dual-hose air pump designed for that setup. On the downside, it's used and not covered by Sleep Number's own warranty; the seller offers a two-year warranty and a trade-in option for broken pumps, but you're still buying a secondhand component rather than a new one. It also does nothing on its own without the compatible air chamber and bed frame.
14 Inch King Size Gel-Infused Memory Foam Mattress
This new king mattress is the all-in-one solution if you want cooling comfort without an air system. The 14-inch profile comes with a cool-touch nylon cover that includes plant-infused fiber, and the gel-infused memory foam is designed to keep air flowing and reduce heat buildup. It's listed with CertiPUR-US certified foam, so you get a complete king-size sleep surface without needing to add a pump. The limitation is the higher price: at $736.99, it's the more expensive buy. It's also a full mattress, so you'll need a king frame and a way to get it into place; there's no built-in adjustable-firmness system.
Final Choice by Use Case
Choose the Select Comfort Air Bed Pump if you already have a compatible Sleep Number bed and just need to bring the adjustability back. Choose the 14-Inch Gel-Infused King Mattress if you're outfitting a fresh setup or replacing an old mattress with a new cooling memory foam surface.

