top of page


A Federal Thermal engineer replies within 4 business hours on weekdays — or the next business morning if you reached us after hours. If it's urgent, call (405) 239-7301 (OKC) or (918) 249-1918 (Tulsa).
Have a question or need technical advice?
Fill out this form and leave us a message
Oklahoma City
Call: 405.239.7301
Tulsa
Call: 918.249.1918
bottom of page