You do not need a crowded boardroom to experience poor air quality. In many Alberta homes, a closed office with
one person working all day can experience elevated carbon dioxide levels that signal inadequate ventilation and stale
indoor air.
Is Your Home Office Making You Less Productive?
Introduction
Have you ever reached the middle of the afternoon and felt mentally drained despite getting a full night’s sleep?
You refill your coffee. You stand up and stretch. You blame a busy schedule or a long list of meetings.
But what if part of the problem is the air around you?
Since the rise of remote work, millions of Canadians now spend the majority of their workday inside home offices.
Many of these spaces were never designed to function as full-time workplaces. Spare bedrooms, basement offices, and
converted guest rooms often have limited ventilation and minimal fresh-air exchange.
Research from Harvard’s Healthy Buildings Program has drawn attention to the importance of ventilation and indoor
environmental quality. Their work suggests that indoor environmental conditions, including ventilation and pollutant
concentrations, may influence how people experience cognitive tasks and workplace performance.
While many homeowners focus on ergonomic chairs and faster internet, few consider whether their home office is
receiving enough fresh air.
The Research: What Carbon Dioxide Can Tell Us
Carbon dioxide (CO2) is a naturally occurring gas produced every time we breathe.
Outdoors, carbon dioxide levels are typically relatively low and diluted by the atmosphere. Indoors, however,
carbon dioxide can accumulate when fresh-air ventilation is limited.
Importantly, CO2 itself is often used as an indicator of ventilation effectiveness rather than being viewed solely
as a pollutant. Elevated indoor CO2 levels can signal that stale indoor air is not being replaced efficiently with
fresh outdoor air.
Researchers from Harvard’s Healthy Buildings Program examined indoor environmental conditions and found that
improved ventilation and lower indoor pollutant concentrations were associated with significantly better cognitive
function scores in controlled studies.
The takeaway is not that carbon dioxide directly causes poor performance. Rather, elevated CO2 levels often
indicate a ventilation problem that may affect overall indoor environmental quality.
In a typical work-from-home environment, a closed office with a single occupant can experience steadily rising CO2
levels throughout the day if fresh-air exchange is insufficient.
Why This Matters for Alberta Professionals
Alberta homeowners face unique ventilation challenges.
During winter, outdoor temperatures frequently remain well below freezing. To stay comfortable and control heating
costs, windows remain closed for months at a time.
Modern homes are also becoming increasingly airtight. While this improves energy efficiency, it can reduce natural
air exchange if dedicated ventilation systems are not functioning properly.
For professionals working from home, that combination creates an environment where stale air can accumulate more
easily than many people realize.
Women balancing careers, family responsibilities, and remote work often spend long periods in a single room without
realizing the indoor environment may be changing throughout the day.
Common signs that may indicate ventilation concerns include:
- Rooms that feel stuffy or stale
- Afternoon fatigue during work hours
- Persistent odors that linger
- Rooms that feel warmer than expected
- Poor airflow between spaces
- Condensation during colder months
These signs do not automatically indicate elevated CO2 levels, but they can suggest opportunities to improve
ventilation and indoor environmental quality.
How CO2 Builds Up in a Home Office
Unlike many indoor pollutants, carbon dioxide does not require a special source.
You create it simply by breathing.
In a small enclosed room, the concentration gradually rises as occupants continue working, attending virtual
meetings, or spending extended periods inside.
Several factors can accelerate accumulation:
- Closed doors
- Closed windows
- Poor HVAC airflow
- Blocked vents
- Undersized ventilation systems
- Basement office locations
The longer a room remains occupied without adequate fresh-air exchange, the more likely indoor air becomes
stagnant.
What You Can Do About It
1. Improve Ventilation
Ventilation remains one of the most effective ways to improve indoor environmental quality.
Fresh-air exchange helps dilute indoor contaminants and reduce the buildup of stale air.
2. Check Your HRV or ERV System
Many Alberta homes are equipped with Heat Recovery Ventilators (HRVs) or Energy Recovery Ventilators (ERVs).
These systems are designed to provide controlled fresh-air exchange while maintaining energy efficiency.
Regular maintenance helps ensure they perform properly.
3. Evaluate Airflow
Blocked vents, closed registers, and airflow imbalances can prevent fresh air from reaching occupied rooms.
A professional airflow assessment can identify opportunities for improvement.
4. Monitor Indoor Conditions
Modern indoor air quality monitors can track carbon dioxide, humidity, temperature, and other environmental
indicators.
Measurement provides a clearer understanding of how indoor conditions change throughout the day.
5. Assess Your Home as a System
Ventilation, filtration, humidity, airflow, and indoor air quality are interconnected.
Addressing one issue often reveals opportunities to improve others.
This whole-home approach aligns with Harvard’s Healthy Buildings framework and helps homeowners make informed
decisions based on real data rather than assumptions.
Summary
Your home office may be affecting more than your comfort. Elevated carbon dioxide levels can signal inadequate
ventilation and stale indoor air, particularly in tightly sealed Alberta homes during winter months. Research from
Harvard’s Healthy Buildings Program highlights the importance of ventilation and indoor environmental quality in
spaces where people spend long periods of time. Understanding how your home office performs is often the first step
toward creating a more comfortable, productive, and enjoyable work environment.
Ready to Breathe Easier? Start with a Free Home Wellness Assessment.
Alberta Indoor Comfort’s WellnessByHome team evaluates ventilation performance, airflow, humidity, indoor air
quality, radon considerations, and overall home comfort.
Our assessment provides objective measurements and practical recommendations so you can better understand what your
home is doing throughout the day.
- (403) 329-6400
- albertaindoorcomfort.com/wellness-by-home
Serving Calgary, Airdrie, Cochrane, Chestermere, Okotoks, Red Deer, Lethbridge, and communities throughout
Alberta.
Frequently Asked Questions
What is a normal indoor CO2 level?
Indoor carbon dioxide levels vary depending on occupancy and ventilation. Elevated levels often indicate
insufficient fresh-air exchange rather than a direct health concern on their own.
Can working from home affect indoor air quality?
Yes. Occupied rooms naturally accumulate carbon dioxide and other indoor contaminants when ventilation is
limited.
How do I know if my home office has poor ventilation?
Signs may include stale air, persistent odors, poor airflow, condensation, or elevated carbon dioxide
measurements.
Do HRV systems help reduce CO2 levels?
Properly functioning HRVs and ERVs can improve ventilation by exchanging stale indoor air with fresh outdoor air.
Should I test my home’s air quality?
Testing provides objective information about indoor environmental conditions and helps identify opportunities to
improve comfort and ventilation.
