Where should you drill if the exterior house has brick?

Drilling through the mortar is the preferred method when working with brick exteriors. Mortar is designed to be softer than brick and can absorb some expansion and contraction, making it less prone to cracking compared to drilling directly into the brick itself. Furthermore, drilling into the mortar allows for easier repairs in case of any damage, as replacing mortar can typically be less complicated than repairing the brick.

This method also avoids potential issues of hitting the brick's structural integrity, ensuring the stability of the wall remains intact. Additionally, drilling into the mortar often allows for a more secure and stable anchoring point for brackets or other fixtures that may be installed.

Drilling through brick directly can lead to cracking or spalling, which weakens the material. The other options, such as drilling on the warm side of the wall or the edge, do not directly address the material of the wall and could potentially lead to complications depending on the specific installation requirements or environmental conditions.