How Indoor Air Quality Affects Your Daily Energy

7 min read  ·  MIKOL Editorial

You slept eight hours. You had your coffee. But by mid-morning, the focus is gone — a low, dull tiredness that no amount of caffeine addresses. The culprit may not be sleep debt or nutrition. It may be the air inside your home.

Indoor air quality is one of the most underestimated influences on how we feel, think, and perform. Most people manage it without ever thinking about it — and most homes fall short of what the body actually needs.

What Indoor Air Quality Actually Means

Indoor air quality refers to the chemical, physical, and biological characteristics of the air inside a building. The primary metrics that affect how you feel are:

•       Carbon dioxide (CO₂) concentration — from breathing and insufficient ventilation

•       Volatile organic compounds (VOCs) — off-gassed from furniture, paint, cleaning products, and flooring

•       Particulate matter (PM2.5) — fine particles from cooking, candles, and outdoor pollution entering through windows

•       Humidity — too low causes dry air and respiratory irritation; too high encourages mould growth

•       Temperature — thermal comfort directly affects alertness and cognitive performance

The CO₂ Problem Most Homes Have

Outside air contains roughly 420 parts per million (ppm) of CO₂. In a closed bedroom or home office with poor ventilation, that number can climb above 1,000 ppm within an hour or two of occupancy.

This is not a dramatic effect. You will not feel unwell. But you will feel slower, less motivated, and more fatigued. If you work from home and notice that your mid-afternoon slump is worse in winter (when windows stay closed), CO₂ buildup is likely a factor.

VOCs: The Invisible Irritants

Volatile organic compounds are chemicals that off-gas from everyday household materials. New furniture, freshly painted walls, synthetic flooring, aerosol sprays, and even some scented candles are common sources. Most VOCs dissipate over time, but in a poorly ventilated home, they can accumulate to levels that cause headaches, throat irritation, and fatigue.

The good news is that VOC exposure is highly manageable once you understand the sources. Natural materials — solid wood, cotton, wool, stone — off-gas far less than synthetic alternatives. This is one reason why environments built with natural materials tend to feel cleaner and calmer.

Room-by-Room Improvements

Bedroom

•       Keep the window cracked overnight if outdoor air quality allows — even a few millimetres dramatically improves CO₂ levels

•       Remove synthetic-fill pillows and mattress covers where possible in favour of natural fibres

•       Avoid air fresheners and scented sprays — a bowl of bicarbonate of soda absorbs odours without adding chemicals

Home Office

•       Open a window or door periodically — a five-minute cross-ventilation break once per hour can reduce CO₂ by 30-40%

•       Add a desktop CO₂ monitor (widely available for under $80) to track real-time levels

•       Place a single large-leafed plant near your workspace — not for air purification (the science on this is limited) but for the documented psychological effect of biophilic elements on stress and focus

Kitchen and Living Areas

•       Always use an extractor fan when cooking — cooking generates significant particulate matter and moisture

•       Choose low-VOC or zero-VOC paints for any interior decoration work

•       Run a HEPA air purifier during and after cooking, particularly if you cook with gas

When to Consider an Air Purifier

For homes near high-traffic roads, in dense urban areas, or where occupants have respiratory sensitivities, a quality HEPA air purifier can make a measurable difference. Look for one rated for your room size and with a true HEPA filter (not 'HEPA-type').

MIKOL's air purifier range is designed with exactly these conditions in mind — engineered for spaces where air quality, aesthetics, and quiet operation all matter.

Explore MIKOL Air Purifiers  →  mikolmarmi.com/collections/air-purifier

Also in Wellbeing