---
title: Testing, Adjusting, and Balancing for HVAC
−category: Mechanical
+category: Mechanical / Controls & Testing
toc_depth: 3
description: >
…645 unchanged lines
After project closeout, the Owner's maintenance practices govern whether the as-balanced condition persists. Filter changes on schedule, coil cleaning at recommended intervals, BAS sensor calibration verification, and inspection of locked balancing-device positions during routine maintenance are needed to preserve the as-balanced condition. The TAB Final Report is the baseline against which future re-balance or troubleshooting work is compared; the Owner shall retain the report as a permanent record of the system as accepted.