#Clanchief - I have personally have not found this to be a problem. I haven't heard of anyone else having issue either. The rubbermaid coolers are BPA free, and are food grade quality, so I don't think there are any health concerns.
This from Rubbermaid's Q&A section, http://www.rubbermaid.com/Category/P...od_ID=RP091235
, (click the Q&A tab or "read all" next to the customer Q&A icon) which has two questions regarding the use of hot liquids in their coolers. It's not much, but I thought I'd throw it out there. It seems to me that they just don't know and don't want any liability of saying it's ok as they haven't tested the coolers with hot liquids.
Q1 - Is there a maximum temperature for the liquid that goes into the water cooler? For example, if I put hot tea or a liquid at 170F, will this cause a problem (either health for me or damage the cooler)?
A1 - Our water coolers are designed for keeping liquids cold. Cold air falls, therefore the coolers have heavy insulation in the bottom of the cooler to keep the coolness inside the container.
Warm air rises and would easily escape from the containers as they lack heavy insulation towards the top.
Our water coolers will keep liquids warm for a limited period of time, depending on the outside temperature and the temperature of the liquid placed inside. We do not recommend putting extremely hot liquids in the container as it may warp the liner.
Q2 - i need to know if that cooler is safe to drink hot liquids from.. i know it won't do well keeping stuff hot because its designed to keep stuff cool. I just wasn't sure if the plastics would release any harmful chemicles if there were hot liquid in it
A2 - The water coolers have not been tested for use with warm/hot liquids. We do not suggest using them for this purpose as it could damage and warp the lining.