Support DB
Frequently Asked Queries
> Is passive cooling viable in high humidity?
Passive cooling relies heavily on thermal mass and night purging. If nighttime temperatures do not drop, or humidity remains extreme, passive systems alone may not suffice and require supplementation from a high-efficiency heat pump.
> What is the energy draw of a heat pump vs traditional AC?
Heat pumps typically use 30% to 50% less electrical input than standard air conditioning setups due to their superior Coefficient of Performance (COP) and variable speed inverter-driven compressors.
> Do evaporative coolers cause mold?
Direct evaporative coolers must only be used in arid climates with high fresh-air exchange rates. Using them in closed systems or high-humidity environments can lead to condensation and mold. Indirect systems circumvent this entirely.
> Why do whole-house fans need open windows?
A whole-house fan pulls massive volumes of air. Without open intake windows, it creates severe negative pressure in the envelope, which can pull exhaust gases down from flues or cause structural pressure anomalies.
> Can geothermal heat pumps be installed anywhere?
Geothermal systems require sufficient land area for horizontal trenching or deep bedrock access for vertical drilling. Dense urban matrices often preclude their installation, making air-source systems the optimal fallback.
> Are ceiling fans actually reducing room temperature?
No. Fans alter fluid dynamics to increase evaporative cooling on the epidermis. The absolute temperature of the room remains unchanged. Leaving a fan on in an unoccupied room wastes energy.
> What is phase-change material (PCM)?
Advanced passive cooling uses PCMs (like specialized waxes) encapsulated in wall panels. As the room heats up, the material melts, absorbing latent heat. At night, it solidifies, releasing heat.
> How does building albedo impact cooling loads?
Albedo measures reflectance. A stark white roof reflects up to 85% of solar radiation, vastly reducing the thermal energy transferring into the attic and living spaces compared to dark asphalt.