Context adjustment
Use a shorter observation interval when this household condition increases load or contamination.
Check HVAC air filter helps keep the hvac system observable and reduces the chance that a small maintenance issue goes unnoticed.
Completion record
- Confirm the exact system or appliance.
- Note condition before and after the task.
- Record the date and any change in noise, airflow, water, heat or performance.
- Escalate leaks, burning odor, damaged wiring or unsafe access.