In the hospitality business the motto is:
The mandate we agreed with the owner is to do everything within reason to get a 5-star review. We can never use the excuse, “Guest, please wait for 24 hours, as we cannot get hold of the owner to okay replacing the geyser”.
If we cannot authorize work, in an emergency with our proven and trusted workmen, then the owner is not really committed to us and our aims with the home.
Most emergencies we may get hold of the owner immediately but if we cannot we must act. Immediately.