You say you can do TEC control from -55 to + 150?. So can I just specify my TEC platform with that temperature range, even if my real application is only for 0 to 85??

There are higher costs for wider temperature control ranges. We do have
the technology to achieve fast and stable temperature from -55 to + 150?, but it will require
more TEC’s and more sophisticated Thermal Platforms. The cost may vary greatly
depending on your specifications.