There's hot, and then there's too hot.

Small portable heaters that sold for about $20 at Bed Bath & Beyond have been recalled because at least four of them have caught fire.

About 28,000 of the items, made in China, were sold at the stores between August and October of 2015. They were also sold through the company's website, according to an announcement by the Consumer Product Safety Commission.

They were manufactured by CE North America LLC, of Miami, Fla., which will provide affected consumers with a pre-paid shipping label so the fans can be returned. Once the company has received the defective heater, it will issue a refund check.

Kathleen O'Brien may be reached at kobrien@njadvancemedia.com. Follow her on Twitter @OBrienLedger. Find NJ.com on Facebook.