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Indoor Air Quality Improvement Calculator
See how better ventilation & filtration can improve air quality in your US home – EPA & ASHRAE based
Table of Contents
Show
Room Information
Current (Baseline) Conditions
Improved Scenario
Your Results
| Metric | Current | Improved | Difference |
|---|---|---|---|
| Room Volume | |||
| Air Changes per Hour (ACH) | |||
| Ventilation Rate (CFM) | |||
| Estimated Indoor CO₂ (ppm) | |||
| Particle Filtration & Removal (proxy %) | |||
| Indoor Air Quality Level (CO₂-based) | |||
| Estimated extra annual electricity cost | — | ||
Important notes (US context):
• CO₂ generation rate based on sedentary adult (ASHRAE ≈ 0.005 L/s/person).
• CO₂ > 1,000–1,200 ppm above outdoor often indicates poor ventilation.
• Particle removal is a rough estimate combining filtration (MERV) and ventilation (ACH).
• Cost assumes 12 hours/day operation (common for bedroom/living area ventilation).
• For best results in US homes: target ≥5 ACH + MERV 13 or higher filters.
• CO₂ generation rate based on sedentary adult (ASHRAE ≈ 0.005 L/s/person).
• CO₂ > 1,000–1,200 ppm above outdoor often indicates poor ventilation.
• Particle removal is a rough estimate combining filtration (MERV) and ventilation (ACH).
• Cost assumes 12 hours/day operation (common for bedroom/living area ventilation).
• For best results in US homes: target ≥5 ACH + MERV 13 or higher filters.