Observe
We listen to what you have noticed, review the system history, and observe the equipment in operation.
A Comprehensive Diagnostic process for residential HVAC systems.
Nights and weekends, your call still reaches us — emergencies get immediate attention, and everyone else is first in line for a morning callback.
The NW HVAC diagnostic standard
We don’t just find and fix problems. We find why problems happened in the first place.
The same symptom can have several possible causes. Replacing the first suspicious part may quiet the symptom without correcting the condition that caused it. We look at the complete system, confirm the failure, and explain the practical next step.

A consistent process that works across every system type.
We listen to what you have noticed, review the system history, and observe the equipment in operation.
We use the appropriate measurements and system checks to confirm the actual problem.
We explain what failed, why it happened, what it will take to fix, and what can reasonably wait.
Once you approve the work, we complete the repair carefully and professionally.
We operate the system again and confirm that it is functioning properly before we leave.
Diagnostic visit: $199 plus tax — reduced or waived when you join the Comfort Protection Plan. You approve any work before it begins.
Repair savings and protection
Members receive ongoing maintenance benefits, priority support, repair savings, and added protection while the plan remains active.