Analyzing 5,760,1035.8M ReviewsFor 15,83615.8K Experts
We graded 10 companies on seven things customers actually report: satisfaction, reliability, workmanship, value, momentum, track record and how owners handle complaints.
From 22,421 Google reviews of 10 top-rated sump pump installation services nationwide; 10 of them in Tonawanda, NY. Updated October 28, 2026.
Pick the job — we re-rank companies by how customers rated that exact job.
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 sump pump installation 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 |  Shawn and Son Plumbing, LLCTonawanda, NY | 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%100+58.7Reliability 26%98+25.6Value 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. | AAAAA– | 5.00 | $1.2k |
| 2 |  Pappas PlumbingTonawanda, NY | 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%99+25.8Value 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– | 4.99 | $1.4k |
| 3 |  Hazlett PlumbingTonawanda, NY | A 96How 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%95+51.8Reliability 24%93+22.5Value 14%100+14.1Replies to reviews 7%100+7.1Experts Score= 96Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.97 | $724 |
| 4 |  Sewer pro plumbingTonawanda, NY | 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%99+58.1Reliability 26%99+25.8Value 15%73+11.1Experts 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–BA– | 4.99 | $1.1k |
| 5 |  T-Mark Plumbing, Heating, Cooling & Electric - West SenecaTonawanda, NY | 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%93+50.7Reliability 24%93+22.5Value 14%100+14.1Replies to reviews 7%100+7.1Craft & service penalty96−0.4Experts Score= 94Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.93 | $227 |
| 6 |  Cellino Plumbing, Heating, Cooling & ElectricTonawanda, NY | A 90How 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%88+48Reliability 24%88+21.3Value 14%100+14.1Replies to reviews 7%100+7.1Craft & service penalty91−0.9Experts Score= 90Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.88 | $366 |
| 7 |  T-Mark Plumbing, Heating & Cooling- BuffaloTonawanda, NY | A 88How 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%88+48Reliability 24%84+20.4Value 14%100+14.1Replies to reviews 7%95+6.7Craft & service penalty89−1.1Experts Score= 88Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.86 | $239 |
| 8 |  All Pro PlumbingTonawanda, NY | A 88How 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%88+48Reliability 24%83+20.1Value 14%93+13.2Replies to reviews 7%100+7.1Craft & service penalty97−0.3Experts Score= 88Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.88 | $381 |
| 9 |  Reimer Heating, Cooling & PlumbingTonawanda, NY | A 85How 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%85+46.4Reliability 24%81+19.6Value 14%84+11.9Replies to reviews 7%98+6.9Craft & service penalty97−0.3Experts Score= 85Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAAA | 4.86 | $383 |
| 10 |  Cellino Plumbing, Heating, Cooling & ElectricTonawanda, NY | A 80How 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%89+48.5Reliability 24%89+21.6Value 14%100+14.1Replies to reviews 7%100+7.1Craft & service penalty89−1.1Momentum penalty0−10Experts Score= 80Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews. | AAAAFA | 4.89 | $359 |
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”. |
|---|---|---|---|---|
| HVAC system maintenance | $19 | $83 | $192 | 98% |
| Drain cleaning | $158 | $228 | $292 | 94% |
| Heating system maintenance | $19 | $57 | $148 | 99% |
| Heating system repair | $57 | $184 | $667 | 97% |
| A/C system maintenance | $26 | $83 | $271 | 98% |
| Plumbing pipe repair | $305 | $466 | $992 | 97% |
| Water heater installation | $1.1k | $1.6k | $2.1k | 97% |
| Plumbing leak detection | $39 | $176 | $509 | 96% |
| Heating system installation | $1.2k | $1.6k | $2.1k | 99% |
| Toilet repair | $209 | $322 | $493 | 93% |
| HVAC system repair | $104 | $251 | $658 | 98% |
| Sewer repair | $236 | $432 | $1.1k | 98% |
How the 10 sump pump installation services we rated in Tonawanda, NY compare, and what customers praise most.
A = score 80+, F = below 20.
Average stars per company.
Share of Google review highlights.
All price verdicts left with reviews.
Share calling it great / reasonable / overpriced.
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 10 best-rated sump pump installation services in Tonawanda, NY average 4.9★ on Google across 22,422 reviews. Hazlett Plumbing has the top rating (5.0★), and Reimer Heating, Cooling & Plumbing has the most reviews (9,778). Updated October 28, 2026.
10 companies that meet our bar: rated 4.5★ or higher on Google, with a meaningful review history (22,422 reviews combined) and currently operating. Request a call back and the company will phone you directly.
“I'm a repeat customer, and Hazlett continues to be my choice for plumbing needs in the Hamburg area...great service! Recently replaced two bathroom faucets. James was great! Faucets work perfectly and his clean-up…” — Google review
“Joe and his team did an excellent job repairing a broken bubbler system at my home. Communication was great before, during, and after the job was complete, price was competitive, and they did an excellent job with…” — Google review
“Austin did an amazing job. I really appreciate how professional he was and cleaned up everything. Reimer is now my go to company for any need.” — Google review
“Prompt and courteous was Maxwell ,as he attended to the details and procedure of our heating check up.” He cleaned and examined the inner workings and then spoke to me with some suggestions and tips to help keep…” — Google review
“Alex was prompt, knowledgeable, informative and thorough during his visit and furnace tuneup. Answered all questions I asked and even informed me about a rebate offer.” — Google review
“Cellino was one of three quotes. The rep Liam was knowledgeable personable and wasn’t pushy at all! Was a pleasure to deal with him. We chose Cellino for this reason. Quote was competitive but the knowledge and…” — Google review
“Prompt Polite Wore booties Extremely thorough-explained everything on my level They’re coming back to do another job as I was extremely pleased with their work I would recommend them to anyone!” — Google review
“Antonio and Trevor were fantastic. Very friendly, professional and helpful when explaining all the work they were doing. Even saved us a good chunk of change when adjustments were made to the repair approach. Have…” — Google review
“Matt was incredibly helpful and friendly. Gave us options and helped us make an informed decision. And he left the place clean when he left!” — Google review
“We had Matt (and Riley) re-route our some of our plumbing to bypass a collapsed drainage pipe under our basement floor. From the initial assessment to the end of the job, they were punctual and professional and…” — Google review
We scan Google Maps for sump pump installation service listings in and around Tonawanda, 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.
Hazlett Plumbing has the highest Google rating on our Tonawanda list: 5.0 out of 5 from 389 reviews (as of October 28, 2026).
Reimer Heating, Cooling & Plumbing has the most Google reviews among the companies listed here: 9,778, with a 4.9★ average.
Only open Tonawanda-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.
Analyzing 5,760,1035.8M ReviewsFor 15,83615.8K Experts