Alejandro’s main research interests are net zero buildings and the indoor environment – indoor air quality (IAQ) and thermal comfort –, particularly Passivhaus homes. Ultimately, the connections between sustainable architecture to health, urban and human behaviours to create healthy homes through design research methods. Alejandro has developed an interest in using low-cost sensors as research tools and their effect on residential behaviour, design, and human health & well-being. Alejandro is also a certified Passivhaus Designer.