#1
SLO Dryer Vent Cleaning
“Very professional . Arrived on time, completed work in a reasonable time and left the area cleaner than when he arrived. Definitely would use them again.” — Google review
Experts Reviews · 2026 Ratings
The Best Interior Cleaning Services in San Luis Obispo, CA
We graded 5 companies on seven things customers actually report: satisfaction, reliability, workmanship, value, momentum, track record and how owners handle complaints.
$247typical jobMedian of the bill customers reported in their Google review (Google asks reviewers for a price range; we use the middle of each range).
97%say the price was fairOf customers who rated the price, the share who chose “Great price” or “Reasonable” rather than “Overpriced”.
4.83★average ratingPlain average of every Google star rating we collected for these companies.
1.7%bad jobs (1–2★, 2 yrs)Share of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
From 17,797 Google reviews of 46 top-rated interior cleaning services nationwide; 5 of them in San Luis Obispo, CA. Updated November 2, 2026.
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Overall ratings
Experts Score 0–100Experts Score (0–100)Absolute quality first: recency-weighted star average (≈54%), share of 1–2★ reviews (≈24%), customers’ price verdicts (≈14%), owner replies to critical reviews (≈7%); minus up to 10 points each for complaints flagged in Google review highlights and for a real slide in recent ratings. Hover a company’s score on its page for the full breakdown. and a letter grade per factor (A = top 20% of interior cleaning services).
| # | Company | ScoreExperts Score (0–100)Absolute quality first: recency-weighted star average (≈54%), share of 1–2★ reviews (≈24%), customers’ price verdicts (≈14%), owner replies to critical reviews (≈7%); minus up to 10 points each for complaints flagged in Google review highlights and for a real slide in recent ratings. Hover a company’s score on its page for the full breakdown. | FactorsFactor grades, in orderSatisfaction (54%): Recency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.Reliability (24%): How rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.Craft & service (0%): Google review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.Value (14%): Customers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Momentum (0%): Penalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.Replies to reviews (7%): How often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.One letter per factor score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = below 20. | ★Google star rating as shown on Google Maps. | Typical billMedian bill customers of this company reported in their reviews (needs 3+ priced reviews). |
|---|---|---|---|---|---|
| 1 |  Slo Breeze CleaningSan Luis Obispo, CA | A 99How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 59%99+58.1Reliability 26%97+25.3Value 15%100+15.2Experts Score= 99Not enough data for replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AA–AA– | 5.00 | $211 |
| 2 | SLO Dryer Vent CleaningSan Luis Obispo, CA | A 98How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%97+52.9Reliability 24%97+23.5Value 14%100+14.1Replies to reviews 7%100+7.1Experts Score= 98Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.98 | — |
| 3 |  Slo Steam Carpet & Tile CleaningSan Luis Obispo, CA | A 91How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%91+49.6Reliability 24%90+21.8Value 14%100+14.1Replies to reviews 7%81+5.7Craft & service penalty94−0.6Experts Score= 91Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.92 | $274 |
| 4 |  San Luis Carpet CleaningSan Luis Obispo, CA | B 77How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%83+45.3Reliability 24%69+16.7Value 14%75+10.6Replies to reviews 7%63+4.5Experts Score= 77Grade B: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AB–BAB | 4.82 | $250 |
| 5 |  San Luis Auto InteriorsSan Luis Obispo, CA | C 57How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 64%66+41.9Reliability 28%53+15Replies to reviews 8%53+4.4Momentum penalty56−4.4Experts Score= 57Not enough data for value; its weight is shared by the others.Grade C: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | BC––CC | 4.67 | — |
What jobs cost
What customers paid, from the price Google asks reviewers to report.
| Job | Low25th percentile: 1 in 4 customers paid less than this. | TypicalMedian of the bill customers reported in their Google review (Google asks reviewers for a price range; we use the middle of each range). | High75th percentile: 1 in 4 customers paid more than this. | FairOf customers who rated the price, the share who chose “Great price” or “Reasonable” rather than “Overpriced”. |
|---|---|---|---|---|
| Standard cleaning | $126 | $183 | $247 | 98% |
| Deep clean | $271 | $371 | $497 | 97% |
| General carpet cleaning | $170 | $221 | $310 | 99% |
| Carpet steam cleaning | $170 | $253 | $347 | 99% |
| General housekeeping | $119 | $176 | $240 | 99% |
| Moving-related cleaning | $321 | $397 | $705 | 96% |
| HVAC duct & vent cleaning | $351 | $693 | $930 | 100% |
| Upholstery cleaning | $164 | $209 | $310 | 100% |
| Area rug cleaning | $131 | $186 | $366 | 100% |
| Office & workplace cleaning | $124 | $200 | $261 | 100% |
Interior Cleaning Services in San Luis Obispo, CA at a glance
How the 5 interior cleaning services we rated in San Luis Obispo, CA compare, and what customers praise most.
Experts Score grades
A = score 80+, F = below 20.
- Grade A360%
- Grade B120%
- Grade C120%
- Grade D00%
- Grade F00%
Google ratings
Average stars per company.
- 4.90★ and up360%
- 4.80–4.89★120%
- 4.60–4.79★120%
- Below 4.60★00%
What customers praise
Share of Google review highlights.
- Quality2,63523%
- Professionalism2,64023%
- Responsiveness2,19819%
- Punctuality2,22919%
- Value1,85516%
Was the price fair?
All price verdicts left with reviews.
- Great price1,08542%
- Reasonable1,37453%
- Overpriced723%
- Not sure642%
Price verdicts by year
Share calling it great / reasonable / overpriced.
2025
2026
How we grade
Satisfaction (54%) — Recency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.
Reliability (24%) — How rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.
Craft & service (penalty, up to −10) — Google review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.
Value (14%) — Customers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.
Momentum (penalty, up to −10) — Penalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.
Replies to reviews (7%) — How often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.
The 5 best-rated interior cleaning services in San Luis Obispo, CA average 4.9★ on Google across 1,168 reviews. SLO Dryer Vent Cleaning has the top rating (5.0★), and Slo Steam Carpet & Tile Cleaning has the most reviews (715). Updated October 28, 2026.
5 companies that meet our bar: rated 4.5★ or higher on Google, with a meaningful review history (1,168 reviews combined) and currently operating. Request a call back and the company will phone you directly.
#2
Slo Steam Carpet & Tile Cleaning
“Lucas did an amazing job and was so friendly. He did a very thorough cleaning on a high end sectional we got secondhand. The only surprise was how wet our indoor flooring got in the process (but it was cleaned up…” — Google review
#3
Slo Breeze Cleaning
“I met Thamires by chance and have been thrilled with her services. She plans ahead and meets with you first at the location to go over what your needs. We first scheduled a deep clean. She pointed out the little…” — Google review
#4
San Luis Carpet Cleaning
“We had the Steam carpet cleaning service. The carpet was needing to be cleaned.. I was very happy with the results. The cleaning service was prompt, and timely. On time, professional and friendly.. we can recommend…” — Google review
#5
San Luis Auto Interiors
“Don did a great job on my 1996 Dodge RAM2500. I had the original fabric on the headliner and visors replaced after procrastinating for over 10 years. His work is top notch! Reasonable price, easy to get scheduled…” — Google review
How we pick interior cleaning services in San Luis Obispo
We scan Google Maps for interior cleaning service listings in and around San Luis Obispo, keep only open businesses whose main category matches the service, and require a Google rating of at least 4.5 from at least 20 reviews. Companies are ordered by a confidence-weighted score that balances rating and review volume. We do not accept payment for placement.
Frequently asked questions
Who is the highest-rated interior cleaning service in San Luis Obispo?
SLO Dryer Vent Cleaning has the highest Google rating on our San Luis Obispo list: 5.0 out of 5 from 329 reviews (as of October 28, 2026).
Which interior cleaning service in San Luis Obispo has the most reviews?
Slo Steam Carpet & Tile Cleaning has the most Google reviews among the companies listed here: 715, with a 4.9★ average.
How are these interior cleaning services chosen?
Only open San Luis Obispo-area businesses whose Google category matches the service, rated at least 4.5★ from at least 20 Google reviews. They are ordered by a confidence-weighted score of rating and review volume. Placement is never paid.
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