Strategies for Optimal IAQ in Europe's Sealed Buildings

Europe's energy efficiency has increased tightly sealed buildings, affecting indoor air quality. A comprehensive approach involving regulatory frameworks, ventilation methodologies, material choices, and occupant conduct is needed to achieve optimal IAQ.

FREMONT, CA: Europe's emphasis on energy efficiency has precipitated a notable increase in constructing tightly sealed buildings. While this approach effectively curtails energy consumption, it can inadvertently impact indoor air quality (IAQ).

Building sealing offers numerous benefits for Indoor Air Quality (IAQ). One significant advantage is the reduction of outdoor air pollution infiltrating indoor spaces. Tightening building envelopes minimises the ingress of external pollutants like traffic fumes and allergens. This is particularly beneficial in urban settings where air pollution levels are typically higher, improving building occupants' overall health and comfort.

Furthermore, the installation of efficient ventilation systems is crucial. Mechanical Ventilation with Heat Recovery (MVHR) systems, for example, plays a critical role in maintaining high IAQ by recovering heat from outgoing stale air and pre-conditioning incoming fresh air.

Additionally, improved thermal comfort is a crucial outcome of effective building sealing. Sealing helps to eliminate drafts and reduce heat loss, resulting in a more consistent and comfortable indoor temperature environment. This not only enhances occupant comfort but also reduces the reliance on heating and cooling systems. As a result, energy efficiency is enhanced, contributing positively to operational costs and environmental sustainability goals.

Strategies for achieving optimal IAQ in tightly sealed buildings involve several approaches. Many European countries have implemented stringent building regulations addressing airtightness and ventilation requirements. These regulations stipulate minimum ventilation rates to ensure an adequate supply of fresh air within sealed buildings, balancing the benefits of sealing with the necessity for ventilation.