How to choose an HVAC contractor in Vancouver WA: a homeowner's checklist.

HVAC is one of the larger home-improvement investments most homeowners make — $12,000-$25,000 typically — and the quality of work has a 15-20 year tail. A bad install means cycling repair calls, premature failures, voided warranties, and eventually a second replacement well ahead of schedule. A good install just works.

The trouble is that quality is mostly invisible at quote time. Every contractor's bid says they are licensed, insured, and use good equipment. Telling them apart requires asking better questions and looking at less-obvious signals.

Credentials that actually mean something.

Washington State contractor license + bonding + insurance.

Every HVAC contractor in Washington must be registered with WA Labor & Industries. The license number should be on their truck, their website, and every quote. You can verify any contractor's license at L&I's verification tool.

Bonding ($12,000 minimum for general contractors) is required by state law and provides a small recourse fund if the contractor abandons a project. Liability insurance ($1M+ recommended) covers damage during work. Workers' comp is required if they have employees.

Red flag: Contractor cannot or will not produce their license number on request. Verify on L&I before any quote conversation.

EPA Section 608 universal certification (every technician).

Federally required for anyone handling refrigerant. Every tech who touches your system needs it. Some smaller shops skip this on apprentices — illegal but happens. Ask: "Are all your technicians EPA 608 certified?"

Manufacturer certifications (Mitsubishi Diamond, AS Authorized Dealer, Carrier Factory Authorized, Trane Comfort Specialist).

These are not marketing badges — they are training programs the manufacturers run with real requirements:

• Mitsubishi Diamond Contractor: Mitsubishi's top tier. Required for the extended 12-year warranty Mitsubishi will offer on equipment we install (vs. the 5-7 years from non-Diamond installers). Diamond Contractors complete multi-day in-person training programs and meet ongoing volume + quality requirements.
• American Standard Authorized Dealer: Required for warranty registration on AS equipment. Tier-based program; we are at the full Authorized Dealer level.
• Carrier / Trane / Lennox factory programs: Each major manufacturer runs similar tiered programs. If a contractor installs a brand they are NOT certified on, the warranty may be limited.

Ask: "Are you a [Brand] [Certification Tier]? What warranty does that get me?"

NATE certification (technician-level, optional but signal).

NATE (North American Technician Excellence) certifications cover specific skill areas — installation, service, design. Not required but a strong individual-technician signal. NATE-certified techs work for shops that invest in training. Not every NATE-certified contractor is great; not every great contractor has NATE-certified techs. It is one data point among several.

Red flags during the quote process.

1. Door-to-door sales calls.

Reputable HVAC contractors almost never knock on doors. If someone shows up unannounced offering a "free inspection" or claiming your unit is unsafe, they are running a high-pressure sales script. Send them away politely.

2. The quote happens before the walkthrough.

If a contractor gives you a price over the phone without seeing your home, the number is fictional. HVAC sizing depends on too many home-specific variables — insulation, window type, ductwork, electrical, layout. A real quote requires a real walkthrough.

3. No Manual J load calculation.

The Manual J is the standardized load calculation that determines how much heating and cooling capacity your home actually needs. Most contractors size by square footage — a rule of thumb that has been wrong for 20+ years. A real Manual J takes 30-45 minutes during the quote walkthrough. If a contractor refuses to run one, they will oversize the equipment (which is bad) or undersize it (which is worse).

Ask: "Will you run a Manual J as part of the quote? Can I see the room-by-room report?"

4. Pressure to sign same-day.

"This price is only good today" is a sales tactic, not a real constraint. Manufacturer pricing does not change daily. Permits do not change daily. The only thing that changes is the contractor's quota. A reputable contractor leaves the quote valid for 30-90 days.

5. Vague flat-rate pricing without itemization.

A complete heat pump or AC install quote should be at least one page of itemized line items — equipment, labor, permit, electrical, ductwork, startup, warranty, rebates. A one-line "$18,500 — Heat pump install" is hiding something. We covered what should be on a complete quote in our heat pump cost guide.

6. "Special inspector pricing" or "wholesale direct."

These are sales scripts. Inspector pricing does not exist. Wholesale direct is mythology. Every contractor pays roughly the same equipment cost from distributors. If a contractor's pricing is dramatically lower than competitors, they are either (a) cutting corners, (b) using lower-tier equipment, or (c) planning to upcharge mid-project.

7. No permits pulled.

Every HVAC install in Clark County requires a mechanical permit. The permit means the work was reviewed by a Clark County mechanical inspector after install. Skipping permits is illegal, violates manufacturer warranty terms, makes future home sale harder, and is the #1 quality shortcut in the industry. We pull a permit on every install — no exceptions.

Ask: "Will you pull a Clark County mechanical permit?"

8. Financing-first pitch.

"How much can you afford per month?" is the wrong opening question. The right opening is "what does your home need." Financing is a tool; if it leads the conversation, the contractor is optimizing for their close rate, not your project.

The 8 questions to ask every contractor.

Ask these to every bidder. Compare answers across them — patterns emerge.

1. "Will you run a Manual J load calculation and provide the room-by-room report?"
2. "What's your Mitsubishi / American Standard / [brand] certification tier? What warranty does that get me?"
3. "Are all your installers W-2 employees, or do you sub out the work?"
4. "Will you pull the mechanical permit, and is that included in the price?"
5. "Can I see your last five Clark County permit closeouts?" (Public record. Reputable contractors will show them.)
6. "What's the AHRI reference number for the equipment combination you're proposing?" (AHRI numbers prove the outdoor + indoor units are matched and tested. Required for warranty and rebate.)
7. "What happens if my install fails inspection?" (Good answer: we fix it at no charge until it passes.)
8. "Will you submit my Clark PUD rebate application on my behalf, or do I file it?" (Bonus quality contractors do it for you.)

How to read a quote.

A complete HVAC install quote is roughly one page, double-sided. It should include:

• Equipment specifications: outdoor unit MPN, indoor coil / air handler MPN, tonnage, SEER2/HSPF2, refrigerant type (R-454B for any new system after Jan 1, 2025)
• Labor breakdown: demo of old equipment, install of new, electrical work, line-set, ductwork (if any)
• Permit and inspection: Clark County mechanical permit fee, electrical permit if needed
• Warranty terms: manufacturer parts warranty period, labor warranty period
• Rebate analysis: Clark PUD rebate value, manufacturer rebate, any other applicable programs
• Net out-of-pocket: the actual number you will pay after rebates
• Timeline: when work will start, how long it will take
• Payment terms: what is due when (most contractors structure as 30% deposit, 70% on completion)

If any of these are missing, ask. If the contractor pushes back on itemizing, that is the answer.

How we compare on this checklist.

For full transparency, here is where Pacific Peak Mechanical sits on every metric in this article:

• Licensed and bonded in WA: Yes. License number on every quote.
• EPA 608 certified technicians: Yes, every tech.
• Mitsubishi Diamond Contractor: Yes — 12-year manufacturer warranty available.
• American Standard Authorized Dealer: Yes.
• Manual J on every install: Yes.
• Permits pulled on every install: Yes — Clark County or applicable Oregon jurisdiction.
• Direct-hire crew, no subs: Yes. Every installer is a Pacific Peak W-2 employee.
• Itemized written quotes: Yes, on-site, before any work.
• Rebate filing handled for clients: Yes, no extra charge.
• Reviews: 56+ on Google at 4.9 stars (and growing). Real customers, real reviews.

The bottom line.

Picking an HVAC contractor is like picking a roofer or a plumber for a major project — the cheapest bid almost never represents the best value. The signals that actually predict good work are not in the marketing copy. They are in the credentials, the questions the contractor asks during the walkthrough, what is on the quote, and what the past customers say about specifics.

Whether you hire us or someone else, use this checklist. Bad contractors fail it badly. Good contractors pass it easily. The middle 60% — where most homeowners get into trouble — usually fails on 2-3 specific items that turn out to matter later.

Want to put us through your version of this checklist? Request a quote — we are happy to walk through every credential, every rebate, every line item.