Good portable room heaters are sold at various home furnishing stores such as Bed Bath & Beyond Inc. and specialty retailers such as Best Buy Co. They can also be purchased through online retailers such as Amazon.com.
CNET's best-rated portable heater is the lightweight, high-performing Lasko 754200. It is ideal for small places such as offices or medium sized bedrooms, and can be purchased for as little as $24.19 on Amazon.com or for $24.99 at Best Buy. For bigger rooms, the best-rated portable heater, according to The Sweet Home, is the DeLonghi TRD0715T, which can be purchased for $89.99 on Amazon.com as of February 2015.