Whether your mattress came with a built-in electric pump or relies on a separate one, the process comes down to opening the correct valve, sealing the nozzle, and stopping at firm-but-not-overinflated. Get those three things right and you won’t fight the bed at midnight after a long drive.
Find The Right Valve On Your Twin Model
Bestway twin air mattresses generally use a large quick-release valve with two separate caps: one for inflation and one for deflation. Opening the wrong cover is the number one cause of “why won’t my air mattress fill?” moments.
Look for the valve with the wider opening or the one marked for inflation. The Bestway guidance on properly inflating air mattresses is explicit: open the correct valve cover before you do anything else. If your model has separate inflation and deflation ports, using the deflation port to fill the bed will just push air right back out.
How To Inflate With A Separate Hand Or Electric Pump
Most Bestway twin mattresses without built-in pumps take a standard pump nozzle at the inflation valve. The sequence is straightforward.
- Open the inflation valve cover completely.
- Insert the pump nozzle so it seals tightly inside the valve. A loose fit loses air and makes the pump run forever.
- Start pumping and monitor firmness as the bed fills.
- Stop when the mattress feels firm to the touch but still has a slight give when you press down.
- Replace the valve cover immediately to lock the air in.
Overinflating is the most common mistake here. A bestway twin air mattress needs to be firm enough to support a sleeper, not tight like a drum.
Using The Built-In Electric Pump
If your Bestway twin came with the pump built into the side of the mattress, skip the separate nozzle entirely. The built-in unit connects directly to the mattress valve.
Check the indicator lights on the pump housing first, then plug the pump into the wall socket. Bestway’s own instructions for built-in-pump models like the AlwayzAire run: connect the pump to the mattress valve, plug into the specified power source, wait for inflation to begin, then turn the knob to off once the bed reaches optimal pressure.
The one thing to verify before plugging in: the manual states the appropriate power source for that exact model. Monitor the mattress during the fill and cut the pump the moment the surface turns firm — leaving it running stretches the vinyl and shortens the bed’s lifespan.
Common Inflation Mistakes To Skip
The difference between a good night and a sagging one is usually one of these four errors.
- Wrong valve cover. Models with separate inflation and deflation caps will not fill through the deflation port.
- A loose nozzle seal. Air escapes around the nozzle, so the pump never catches up. Push the nozzle in until it seats.
- Overinflating. Firm is the target; rock-hard stresses the seams and can cause popping along the weld lines.
- Wrong power source on built-in pumps. Match the outlet to what the manual specifies before switching the pump on.
One more tip: fill the bed an hour before sleep and top it off right before bed. Air cools and contracts in the evening, so a mattress inflated in the afternoon can feel slightly soft by midnight. That is normal and a quick two-minute top-up fixes it.
If you are shopping for a new one and want a model that skips the pump hassle entirely, our tested roundup of the best twin air mattresses on the market compares built-in pump models, thickness, and durability side by side.
FAQs
How long does a Bestway twin air mattress take to inflate?
With a built-in electric pump, inflation typically takes two to three minutes. A separate electric pump is similar, while a manual hand pump can take five to ten minutes of steady pumping. The exact time depends on the pump’s airflow rating and how tightly the nozzle seals into the valve.
Why does my Bestway air mattress keep losing air overnight?
First check the valve caps — a half-seated cover leaks slowly all night. Then check for a punctured seam or surface tear. Temperature also matters: cooler night air contracts inside the mattress, making it feel softer.
Can I use a regular bike pump on my Bestway mattress?
Yes, if the pump has a tapered nozzle that fits the mattress valve snugly. Most bike pumps have a narrow tip that will not seal well in a large quick-release valve. A purpose-built air mattress pump or the built-in unit is faster and gives a tighter seal with far less effort.
References & Sources
- Bestway USA. “How to Properly Inflate Your Air Mattress.” Official guidance on valve selection, nozzle sealing, and inflation technique.