99.6review score /100
Portland, OR / Cleaning & maintenance
Air duct cleaning companies in Portland
Review-data ranking. Required trade credentials have not all been checked.
The short answer
Highest scorePNW ProClean · 99.6/100
Most Google ratingsZerorez of Portland · 4,966
Record snapshotNovember 9, 2026 · 27 compared
- 1 Match dated source records.
- 2 Apply the published formula.
- 3 Show the sources and gaps.
What we check: Google listing 27/27 · Oregon CCB 10/27
| Source | What it shows | Coverage | Source dates |
|---|---|---|---|
| Google listing | Listed contact details, rating, count and review date | 27 / 27 | 2026-11-09 |
| Oregon CCB | Dated license, endorsement, bond and insurance fields | 10 / 27 | 2026-11-08 |
Not checked: workmanship, price fairness or first-hand testing.
Not checked: workmanship, price fairness or first-hand testing.
The 27 ranked records
Ranked by review dataEvery score uses the same published formula: Google rating, rating volume and newest review date. It is not a test of workmanship or safety. CCB/BCD checks do not establish the credentials for this category. Other regulators, individual credentials and exact job scope have not been checked. Scoring formula.
99.5review score /100
99.5review score /100
96.6review score /100
96.4review score /100
96.0review score /100
95.8review score /100
95.6review score /100
93.2review score /100
89.6review score /100
86.5review score /100
86.5review score /100
85.9review score /100
80.5review score /100
77.1review score /100
76.5review score /100
74.4review score /100
Aviator Heating & Cooling – AC Installation & Furnace Repair
Record & score ↗5 facts from 1 sourcesReviews
68.7review score /100
60.0review score /100
57.0review score /100
45.2review score /100
42.3review score /100
32.1review score /100
30.8review score /100
0.0review score /100
0.0review score /100
0.0review score /100
Compare the full ranking
Download CSV ↓Method reviews-1.0
How the score is calculated.
Each business receives the same calculation. The rating, volume and recency components follow our electrician formula, then normalize their 70 available points to 100. License history and bond/insurance points are not used here. The original Oregon electrician comparison uses additional eligibility and license components, so its score is not directly comparable to this review-data score.
Rating · 35 points: with n ratings and average r, adjusted rating a = (n × r + 10 × 4.0) ÷ (n + 10). Points = 35 × clamp((a − 3.5) ÷ 1.5, 0, 1). With zero ratings, award zero.
Volume · 25 points: 25 × min(1, log10(1 + n) ÷ log10(501)).
Recency · 10 points: newest review within 30 days: 10; 90 days: 8; 180 days: 5; 365 days: 2; older or no ratings: 0.
Final score: 100 × (rating + volume + recency points) ÷ 70. Display one decimal; sort by the unrounded value. Ties use more Google ratings, then the lower numeric Google listing ID.
A missing review-date retrieval excludes a rated listing until resolved; it does not become a zero. No ratings earns zero. Credential matching is separate context and does not affect this score. No score or rank is changed by hand. This is a public-review-data comparison, not a workmanship or safety assessment.
Before you hire
Compare the same scope.
Give each business the same project description, photos and address. Ask for written answers.
- 01
What system condition makes cleaning useful here?
- 02
Which supply, return and equipment components are included?
- 03
How will you document the work and protect the home?
How to check Oregon air duct cleaning companies records
CCB/BCD checks do not establish the credentials for this category. Other regulators, individual credentials and exact job scope have not been checked.
Project costs in Portland
This dataset does not contain sourced local service prices. We do not publish an estimated local price range from ratings or license records. Ask each business for a written price for the same scope, including labor, materials, permits, travel, exclusions and change orders. Compare the total and the included work.
Frequently asked questions
How were these Portland air duct cleaning companies ranked?
The 27 records use the published rating, review-volume and review-recency formula. The page states the credential checks completed for this trade. A review-data score is not a service-quality test.
Does a place on this list confirm current availability or coverage?
No. These are dated public records. Confirm service to your street address, the exact work, current license status and availability directly with the business.
Can a company pay for a higher rank?
No. Nobody pays to change a score or numbered position. Any separate promotional feature is disclosed and excluded from the scored comparison.
Update log
: source snapshot used for this comparison. The linked profiles and downloads identify the collection dates for individual facts.
: this page was built from that snapshot. Content changes do not establish a new data collection.
Review before the next publication is planned monthly; no automatic refresh date is claimed.
Selection, sources and limits
We collected 100 Google Maps results for “air duct cleaning service” using the Portland search location on November 9, 2026. We kept matching service categories with an explicit Portland, OR listing address, no closed marker and complete rating/date inputs. Shared identities are deduplicated. The source directory contained 28 entries; 1 were held out and 0 promotional features were separated. This search sample is not a complete market census.
Each profile links to the original listing and any matched official record. Review text and reviewer details are not collected. Newest review dates and individual fact dates are shown in profiles. Other trade credentials and complaint histories have not been checked. A missing match does not establish a problem with a business.
Crewsive LLC publishes this comparison. Scores and positions cannot be bought. Promotional features are separate and excluded from the numbered ranking. Known client relationships are disclosed. Funding disclosure · Source data · Corrections.
Use this reference
Cite this page
Crewsive LLC. “Best Air duct cleaning companies in Portland, OR (2026): 27 Review-Data Ranking Records.” Portland Oregon Reviews. Content updated 2026-11-10. https://portlandoregonreviews.com/air-duct-cleaning
For ranking data, also state the data snapshot date (2026-11-09) and method version. A citation is a reference, not an endorsement.