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
Outdoor unit on a Sub Zero job in Vancouver, WA
Real Sub Zero job · Vancouver, WA
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.

Five digits. We’ll check Clark County first.
Best time to call

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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) 839-7670
How 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.

4.9Google rating · 454 reviews
★

Retrieving my belongings turned into a bigger hassle than expected. The staff couldn't locate some boxes right away, and I spent far too much time trying to sort things out.

DDwi I.Google · Nov 2026
★★★★★

Our AC broke and wasn’t cooling at all, so we called Sub Zero Temp Control for AC repair. They came out, checked the problem, and gave us a clear quote with a fair price before starting any work. The repair took about 2 hours and the air conditioner was cooling again the same day. Honest pricing and solid HVAC repair…

MMhad A.Google · Nov 2026
★★★★★

I hired this local business to inspect my older climate equipment just to make sure it was ready for the upcoming heatwave. They replaced a rusty contactor switch and gave me great peace of mind without charging a huge fee.

NNicholas H.Google · Nov 2026

Read all reviews →

Before you book

Fair questions.

Prefer a ballpark price first? Use the instant quote.

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.