The Best Deep Cleaning Services in Maryland
We graded 8 companies on seven things customers actually report: satisfaction, reliability, workmanship, value, momentum, track record and how owners handle complaints.
From 24,876 Google reviews of 58 top-rated deep cleaning services nationwide; 8 of them in Maryland. Updated November 9, 2026.
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Best deep cleaning services in Maryland for carpet steam cleaning
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Stanley SteemerHow Job match is calculatedBuilt only from reviews Google tagged “Carpet steam cleaning”:Stars on this job 55%4.94★Number of such jobs 25%653Overall Experts Score 20%86Job match= 92Stars are pulled toward the category average (4.88★) when a company has few tagged jobs, so 3 perfect reviews don’t beat 80 great ones. 4.3★ scores 0, 5.0★ scores full. Volume is compared with the busiest company for this job.92
Sir CleanAlot Carpet and Upholstery CleaningHow Job match is calculatedBuilt only from reviews Google tagged “Carpet steam cleaning”:Stars on this job 55%5.00★Number of such jobs 25%22Overall Experts Score 20%100Job match= 85Stars are pulled toward the category average (4.88★) when a company has few tagged jobs, so 3 perfect reviews don’t beat 80 great ones. 4.3★ scores 0, 5.0★ scores full. Volume is compared with the busiest company for this job.85Job match = this company’s ★ on reviews Google tagged “Carpet steam cleaning” (shrunk toward the category average when there are few), how many such jobs it has done, and its overall Experts Score.
What customers said about carpet steam cleaning
Stanley SteemerStanley steemer service from today was extremely effective and efficient. They provided a precise estimated arrival time and were finished up 30 minutes after they arrived. Highly recommend.
Stanley SteemerVery professional and courteous gentleman. They explained what they would be doing and were very considerate about areas that were wet, brought it to my attention and mopped it up for my and their safety. My carpets are so clean. I am very pleased and will recommend Stanley Steamer to anyone and everyone. Thank you so much!
Stanley SteemerMichael and Kyle did a great job cleaning our carpets. The arrived on time, called ahead of their arrival, and left us with with clean carpets and helpful suggestions for keeping them that way. They were friendly, polite, and very thorough. And, they finished in record time.
Stanley SteemerHector and Dominique were exceptional. They cleaned carpet and tiled floors in a home that was built in 1970. All of their hard work gave the home the needed facelift. Thank you so much for providing an excellent service.
Stanley SteemerMike, was exceptional. He explained what he was doing. Plus he told me about a program.
Stanley SteemerThank you Mike for doing an amazing job cleaning and deodorizing these 32 year old carpets! Not only do they look great, they smell even better! And also for the great job you did on my sofa and chair as well. Thanks for explaining everything prior to cleaning, and for being kind to my dog!
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 deep 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 | Sir CleanAlot Carpet and Upholstery CleaningBowie, MD | A 100How 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%100+58.7Reliability 26%99+25.8Value 15%100+15.2Craft & service penalty99−0.1Experts Score= 100Not 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. | AAAAA– | 5.00 | — |
| 2 |  Affordable House Cleaning & Pressure Washing, L.L.C.Bowie, MD | A 100How 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%100+58.7Reliability 26%99+25.8Value 15%100+15.2Craft & service penalty99−0.1Experts Score= 100Not 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. | AAAAA– | 5.00 | — |
| 3 |  MD Clean- Trash Can Cleaning ServiceBowie, MD | 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 69%99+68.5Reliability 31%99+30.5Experts Score= 99Not enough data for value, 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––A– | 4.99 | — |
| 4 |  Eca Cleaning, LlcBowie, MD | A 95How 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%95+55.8Reliability 26%91+23.7Value 15%100+15.2Experts Score= 95Not 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– | 4.97 | $236 |
| 5 |  Klean Krissias Cleaning ServicesBowie, MD | A 94How 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%92+50.2Reliability 24%92+22.3Value 14%99+14Replies to reviews 7%100+7.1Experts Score= 94Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.93 | $459 |
| 6 |  Prime Cleaning Services MarylandBowie, MD | A 93How 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%94+55.2Reliability 26%87+22.7Value 15%100+15.2Craft & service penalty99−0.1Experts Score= 93Not 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. | AAAAA– | 4.95 | $189 |
| 7 | Stanley SteemerBowie, MD | A 86How 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%86+46.9Reliability 24%83+20.1Value 14%99+14Replies to reviews 7%100+7.1Craft & service penalty83−1.7Experts Score= 86Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.81 | $303 |
| 8 |  Ecoverde CleaningBowie, MD | B 78How 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%79+43.1Reliability 24%69+16.7Value 14%100+14.1Replies to reviews 7%92+6.5Craft & service penalty71−2.9Experts Score= 78Grade B: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | BBBAAA | 4.77 | $247 |
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 | $158 | $203 | $259 | 99% |
| Deep clean | $265 | $365 | $447 | 98% |
| General housekeeping | $157 | $189 | $247 | 99% |
| Carpet steam cleaning | $203 | $290 | $384 | 99% |
| Upholstery cleaning | $214 | $309 | $440 | 99% |
| General carpet cleaning | $170 | $265 | $347 | 97% |
| Moving-related cleaning | $265 | $347 | $447 | 99% |
| Office & workplace cleaning | $108 | $180 | $410 | 98% |
| Area rug cleaning | $188 | $250 | $614 | 100% |
| Interior & exterior window cleaning | $183 | $262 | $348 | 99% |
| Move-out cleaning | $263 | $350 | $417 | 100% |
| HVAC duct & vent cleaning | $536 | $809 | $1.1k | 95% |
Deep Cleaning Services in Maryland at a glance
How the 8 deep cleaning services we rated in Maryland compare, and what customers praise most.
Experts Score grades
A = score 80+, F = below 20.
- Grade A788%
- Grade B113%
- Grade C00%
- Grade D00%
- Grade F00%
Google ratings
Average stars per company.
- 4.90★ and up675%
- 4.80–4.89★113%
- 4.60–4.79★113%
- Below 4.60★00%
What customers praise
Share of Google review highlights.
- Quality4,98324%
- Professionalism4,92623%
- Responsiveness3,81418%
- Punctuality4,07519%
- Value3,34516%
Was the price fair?
All price verdicts left with reviews.
- Great price1,35134%
- Reasonable2,39461%
- Overpriced822%
- Not sure1063%
Price verdicts by year
Share calling it great / reasonable / overpriced.
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.