I highly recommend this honest business! Our hallway control panel went completely dark, and the repairman quickly found a loose wire behind the drywall, restoring our heat in minutes.
WWilliam P.Google · Oct 2026
Home check · diagnose first
Let’s figure out what’s going on with your home.
Tell us what you’re noticing. A tech reads your answers before the visit, so they show up with a plan and the right parts.
- About a minute
- We diagnose the house, not just the box
- Written price before any work
Sub Zero tech
What’s happening at home?
Pick the one that bugs you most. No wrong answers.
Sub Zero tech
What kind of system do you have?
Best guess is fine. The tech confirms on site.
Sub Zero tech
About how old is it?
Check the sticker on the unit if it’s handy, or just guess.
Sub Zero tech
How soon do you need someone?
We’ll use this to pick your visit window.
Sub Zero tech
How can we reach you?
We call to confirm a time. No spam, no call center.
Your visit
Diagnostic visit for your system
- Who comes
- When
- We call to confirm
- Where
- Your home
- Diagnostic fee
The tech finds the cause, explains it in plain words, and gives you a written price before any work. If it’s not worth fixing, we’ll say so.
Thanks, neighbor. You’re on the list.
We’ll call to confirm a time . Need us sooner? Call now.
Call (360) 839-7670How a diagnostic works
Old school values. Modern comfort.
01
Look at the whole house
Airflow, ducts, thermostat, the equipment. The box is only half the story.
02
Explain it plainly
You see what we see. Photos, readings, no jargon.
03
Written options
Repair first when it makes sense. Replace only if the numbers say so.
What neighbors say
Neighbors, in their words.
My central air completely froze over with ice during a humid weekend, but the tech from Sub Zero came out fast to thaw and fix the refrigerant leak. Everything is running perfectly now, and the house is finally comfortable again!
OOwen P.Google · Oct 2026
Our air stopped working completely and we panicked. The repair guy came over quickly and figured out the wall thermostat just needed new batteries. He swapped them out, checked the rest of the system to be safe, and didn't overcharge us. Very honest and simple service. Highly recommend!
IIan U.Google · Oct 2026
Will you try to sell me a new system?
No. We repair what can be repaired. When a system is near the end, we lay out repair and replace side by side and you decide.
Do you cover my area?
We cover Vancouver and Clark County, plus the Portland metro. Enter your ZIP in the form and we’ll confirm.
I already have a quote from another company.
Good. Bring it. A second opinion often finds a simpler fix, and if the first quote is right we’ll tell you that too.