When designing an HVAC system, remember that... When you design an HVAC system, remember that: 1  All AHU rooms must have a floor drain, as condensation from the air will collect in the unit.  One should provide fresh air to every AHU.
The sales tax in Richmond located in Fort Bend is 8.25% which is above the Texas average of 7.25%. All Fort Bend Sales Tax âº.
FORT BEND COUNTY. Fort Bend County is in the coastal plains of southeastern Texas. Richmond, the county seat, at 29Â°35' north latitude and 95Â°45' west longitude, is twenty-eight miles west-southwest of Houston and at the approximate center of the county.