Waking up to a side of your Sleep Number bed that won't inflate is a clear sign something needs replacing. The question is whether that something is the pump, the air chamber, or both. The parts in this guide are used replacements for different parts of the system: two dual-chamber pumps with wireless remotes, a half chamber for a king mattress, and a basic single-hose inflator with a wired remote. The right pick depends entirely on what your bed is missing.
Quick Take
If you need a full two-hose, wireless-remote pump for a queen or king mattress, the Select Comfort Sleep Number Air Bed Pump for Dual Chamber Queen King Mattress is the most complete package, and the Select Comfort Sleep Number Air Bed Pump For Queen King Mattress Model NXT03DR offers the same dual-chamber layout for a slightly lower price. If you're working with a king mattress that has one bad chamber, the Select Comfort Sleep Number 1/2 Air Bed Chamber for King Mattress S-815 E-King is the targeted piece. For a basic single-hose setup, the Sleep Number Select Comfort Motor Pump Inflator with Wired Remote, Hose EFCS-1 is the most affordable option.
At a Glance
| Product | Price | Price Bar |
|---|---|---|
| Select Comfort Sleep Number Air Bed Pump for Dual Chamber Queen King Mattress | $331.54 | |
| Select Comfort Sleep Number Air Bed Pump For Queen King Mattress Model NXT03DR | $324.99 | |
| Select Comfort Sleep Number 1/2 Air Bed Chamber for King Mattress S-815 E-King | $124.99 | |
| Sleep Number Select Comfort Motor Pump Inflator with Wired Remote, Hose EFCS-1 | $75.00 |
Decision Matrix
Use your bed's missing piece to narrow the field:
- Queen or king bed with a dead pump: The two dual-hose pumps are the full replacements. Choose the SFCS56DR if you want the exact model, or the NXT03DR for the same layout at a slightly lower price.
- King mattress with one failing side: The 1/2 Air Bed Chamber is the part that replaces that side, and it's priced below the pumps.
- Single-chamber bed or a simple backup: The EFCS-1 inflator with wired remote and one hose is the lowest-priced option.
Product Notes
Select Comfort Sleep Number Air Bed Pump for Dual Chamber Queen King Mattress
The full dual-chamber pump is the most complete replacement here. It arrives with a wireless remote, a power cord, and two hoses-one for each side of a queen or king mattress. The pump's built-in firmness control lets you adjust each chamber independently, which is what you need if your bed currently has a dead side. The catch is the $331.54 price, the highest of the four, and the used condition means you'll want to confirm the remote works with your existing bed model. If you're replacing a failed system on a queen or king bed and want the full setup in one box, this is the straightforward choice.
Select Comfort Sleep Number Air Bed Pump For Queen King Mattress Model NXT03DR
The NXT03DR is essentially the same dual-hose, wireless-remote pump as the SFCS56DR but at $324.99, which is $6.55 less. It also includes a power cord and works with the same two-sided adjustable layout. The limitation is similar: it's a used component, and the beige color won't matter once it's hooked up. If the task is to replace a broken dual-chamber pump and you'd rather save a few dollars than have the exact model number on the box, this one gives you the same functional layout for a slightly lower price.
Select Comfort Sleep Number 1/2 Air Bed Chamber for King Mattress S-815 E-King
This is the only air chamber in this lineup, not a pump. It's a half chamber designed for a king mattress, and it has two air ports, so it connects to the plumbing on one side of a dual-chamber bed. The description says it held air for multiple days after a leak check, which addresses a common concern with used bladders. The limitation is that it's only one side: you'll need the other half and a working pump to have a complete sleeping surface. At $124.99, it's a middle-priced option for a targeted replacement if your existing chamber has a slow leak.
Sleep Number Select Comfort Motor Pump Inflator with Wired Remote, Hose EFCS-1
If you need a basic inflator without the complexity of a wireless system, this single-hose pump is the least expensive option at $75. The wired remote keeps the controls tethered to the pump, and the one-hose design is the key difference from the dual pumps above. It's a simple way to inflate a chamber or top one off when you don't need side-by-side controls. The limitation is that it won't cover a two-chamber queen or king setup, and the gray used unit's condition is based on the photos. For a bed that works with a single hose, or as a backup inflator, it's a low-cost way to get air moving.
Final Recommendations
For most people replacing a dual-chamber pump, the NXT03DR is the pick: it has the same wireless-remote, dual-chamber setup as the SFCS56DR for a little less. If you specifically want the SFCS56DR model, the first pump delivers that.
For a king mattress with one broken side, the 1/2 Air Bed Chamber is the targeted purchase, provided the rest of the system works.
For a simple single-hose inflator, the EFCS-1 is the most affordable way to get back to a firm sleep surface.
