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 is located in East Central Texas and is one of 13 counties in the Gulf Coast Region. Fort Bend County's 2010 population was 585,375. Richmond is the county seat. Other towns include Rosenberg, Katy, Sugar Land, Stafford and Missouri City.