The time it takes your mattress to air out may vary. Letting your mattress air out for 24 hours is recommended by the Sleep Products Safety Council. The best way to check if your mattress has aired out is to use your nose. Memory foam mattresses usually have the highest ratings for comfort, durability, and customer satisfaction. One of the only complaints owners have is about memory foam smell. This unpleasant odor is caused by the materials used to make the mattress and lasts up to 4 weeks. Mattresses, pillows and bedding absorb sweat simply from sleeping on them; memory foam is no different. Keep the mattress smelling its best by letting it air out for a few hours when it is time to Air It Out: Off Gassing and Unboxing A Foam Mattress. When a foam mattress is enclosed in air-tight packaging, low levels of gas can build up from the compression. When the mattress is let out of its packaging and reforms, the gas is released producing an off-gassing effect. I bought a memory foam mattress in my sofa sleeper from City Furniture. It has been three weeks or so it is still smells. I took the case off it and have had it airing out against a wall in s room that is ventilated . City F refused to give me my money back . Some say the smell lasted 20 days and others say to use heat and air the mattress out and room really well. I have stripped the mattress including its fabric encasement and opened all the windows for a short time. Then closed the windows and put an extra heater in the room with the mattress on its side trying to air everything out. .
Mothering Forums > Natural Living > The Mindful Home > How long to let a new foam mattress off-gas? Reply Thread Tools #1 of 14 Old 01-13-2008, 04:23 PM You need to just move the old air out so clean air can come in. Open and windows and turn on fans while you do this. no one could figure it out – then she got rid of her memory foam and I got a 3″ serta memory foam mattress and I don’t remember it smelling, I didn’t let it air out either. It cost about $45 with my discount when I worked at target and I love it. Open your mattress and let it air out. The best thing you can do if you are experiencing off-gassing is to let your mattress breathe outside of the house. The majority of VOCs will be emitted in the first hour after opening the mattress but they can continue to be released for an unknown amount of time. .