Standard Customer Service Hours
Mon-Thurs 7am-9pm CST
Fri  7 am-8 pm  CST
Sat & Sun 8 am-5 pm CST

1-888-665-5900 (1-713-780-5900 International)


Emergency Customer Service Hours
24 hours per day, 365 days per year

1-888-665-5900 (1-713-780-5900 International)

Ask that the on-call technician be paged