What static pressure means
Static pressure is the resistance the blower pushes against in the duct system, measured in inches of water column with a manometer.
Also called total external static pressure, TESP.
Where it matters on a HVAC job
High static pressure is behind many comfort complaints and noisy systems. A reading at the start of a visit tells you whether the fix is the equipment or the ducts, and a before and after number sells duct work honestly.
What it costs
Koira's ductwork replacement cost guide puts a typical job at $1,250, with most between $450 to $2,200. The guide shows its sources and what moves the price. The duct size calculator prices a job line by line.
Work it out
- Free calculator: Duct size calculator
- Cost guide: Ductwork replacement cost
- Licensing: HVAC license rules by state
- Tools, templates and guides: Free HVAC resources