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 interior & exterior window cleaning
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Klean Krissias Cleaning ServicesHow Job match is calculatedBuilt only from reviews Google tagged “Interior & exterior window cleaning”:Stars on this job 55%5.00★Number of such jobs 25%7Overall Experts Score 20%94Job match= 94Stars 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.94
Eca Cleaning, LlcHow Job match is calculatedBuilt only from reviews Google tagged “Interior & exterior window cleaning”:Stars on this job 55%5.00★Number of such jobs 25%4Overall Experts Score 20%95Job match= 87Stars 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.87Job match = this company’s ★ on reviews Google tagged “Interior & exterior window 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 interior & exterior window cleaning
Klean Krissias Cleaning ServicesFive stars! Punctual, fantastic pricing, and an amazing cleaning job. Will definitely use their services again.
Eca Cleaning, LlcThey were so friendly and professional. Cleaned everything i asked and more. The price was so reasonable and they did such a great job i wanted to pay them more than what they asked. They Cleaned my new house top to bottom and also the house I was moving out of. I super recommend their services.
Klean Krissias Cleaning ServicesI have a used Klean for 8 years (cleaning every 2 weeks). I have never had a issue. My house always looks and smells great. I highly recommend Klean.
Klean Krissias Cleaning ServicesI have been using Klean for years and will never trust anyone as much as them. After years of it being missing, they found my engagement ring diamond during a deep clean and promptly returned it!
Klean Krissias Cleaning ServicesWe have used KLEAN Krissia’s for many post renovation cleanings! The crews are amazingly thorough, pleasant and punctional ! Communication with this business owner is stellar from quotes, scheduling and follow up! We will continue to reach out to KLEAN with all our future needs.
Klean Krissias Cleaning ServicesI've used Klean for nearly 3 years, best pricing in the area and they do the best job cleaning. Im very particular and ive tried others, highly recommend Krissia's.
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.