#726: Heat-Pump Performance, Asphalt Felt, and Interior Humidification

Consider heat pump technology for heating and cooling systems, but be aware that performance and savings can vary depending on home insulation and climate.

Explore new integrated building products that combine multiple control layers (e.g., sheathing and air barrier) to simplify installation and potentially address labor shortages.

When using asphalt felt as a WRB, be prepared for more challenging installation, particularly around windows and corners, and consider a double-layer system for enhanced performance and durability.

For new or renovated homes in dry climates, assess your ventilation system (HRV vs. ERV) as a first step to manage indoor humidity, potentially adjusting ventilation rates or core types.

If adding interior humidification, opt for steam humidifiers over mister types to minimize maintenance issues, potential leaks, and the risk of microbial growth.

Always check with product manufacturers for their recommendations and compatibility with other building materials, especially when using traditional materials like felt paper with modern claddings.