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 the 10th largest county in Texas, but it has the highest property taxes. The average homeowner in the county pays $4,425 each year in taxes, equal to an effective tax rate of 2.41%. This both rank first in the state of Texas, and are more than double the national averages.