HVAC zoning and motorized dampers

Create multiple zones without choking airflow, exceeding static pressure or short-cycling the heat pump/furnace.

VERT / GREEN

Measure room-by-room temperatures and comfort before adding motorized dampers.

JAUNE / YELLOW

Closing zones changes airflow and static pressure; ducts, fan and equipment must be compatible.

ROUGE / RED

Improvised bypass, high static pressure, unmet minimum airflow or freezing/overheating coils: HVAC design required.

Guided triage

Registers manually closed for balanceMeasure flows/static pressure before automating more restrictions.Multiple zones plannedCheck zone loads, minimum airflow and controls.Air noise/high static pressureMeasure static pressure and correct ducts/controls.Comfort data availableMap room/season differences before changes.

Tools / data

External static pressure
Register airflows
Zone loads

What the professional checks

Design zones/minimum airflow
Verify blower/ducts
Program control sequences

Official sources

RNCan — Zoning Duct Design Guide

Source check / vérification: 2026-08-22. Triage et planification seulement; les travaux réglementés restent aux professionnels requis.

V14

Systems to check before closing the work

V14 connects envelope, air, fire, structure, water and code instead of treating each project in isolation.

Renovation dependenciesVentilation and pressureCode versions

V18

Specialized diagnostics to verify

V18 connects systems that become costly or regulated when a primary project triggers them.

Refrigerant circuit

V19

Edge systems to integrate into the project

V19 covers interfaces that become important when multiple home systems interact.

Whole-home humidity control