How 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%91+22.1Value 14%100+14.1Replies to reviews 7%67+4.7Craft & service penalty98−0.2Experts Score= 91Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.91SCOREService 1 Plumbing, Heating & A/C, Inc.
Joliet, IL · Grade ALetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20. · #8Position by Experts Score among all companies we track in this category. of 10 boiler installers · 4.9★ from 983 Google reviews
Report card
Percentile vs other boiler installers (100 = best)Each factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: value and momentum; weakest: replies to reviews.
Reviews for your job
Customers hired Service 1 Plumbing, Heating & A/C, Inc. for 8 kinds of job.
Service 1 Plumbing, Heating & A/C, Inc. for HVAC duct & vent repair
Clear ✕All 9 Google reviews tagged “HVAC duct & vent repair”
Service One installed my system 11 years ago and has taken great care of it ever since. I would not go with anyone else. All of the technicians that have come out have been polite, courteous, and professional. 9/5/26: John came out to replace a capacitor and some wiring due to a hungry mouse who had its last meal. Work was completed efficiently.
Everyone we've dealt with has been amazing! We have used Service 1 for plumbing and HVAC both and have been so impressed!! I recommend them 100%! Every technician has been so professional, cost efficient, and extremely knowledgeable. I would recommend Service1 to everyone!
Timely and efficient!
Morales was very efficient and clean. Very personable and went the extra mile. Shelley Fleetwood
The technician installed a new humidifier into the furnace made adjustments, and corrected previous electrical hookup, cleaner both furnaces, was extremely knowledgeable, professional and polite, we will definitely keep this company in our contacts for future maintenance.
Thankyou Mike for fixing our issue with a hot new installation pipe. He went above and beyond to make it safe with our young children in the house. He put a guard up in front of the pipe for a shield. 😊 Thanks again!
Very pleased with repair service, Vance technician was professional, neat and nice to speak with. Highly recommend their services
Rating only, no written review.
Rating only, no written review.
Price
Bar = middle half of what customers paid · gold mark = category median.
Price verdictsGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.
Jobs customers hired them for
| Job | Reviews | Category typical |
|---|---|---|
| Heating system installation | 75 | $1.4k–$2.8k |
| Install AC | 65 | $1.6k–$3.2k |
| HVAC system maintenance | 45 | $37–$264 |
| A/C system maintenance | 44 | $39–$318 |
| Heating system maintenance | 42 | $37–$317 |
| A/C system repair | 33 | $216–$611 |
| Heating system repair | 28 | $78–$745 |
| Install thermostat | 22 | — |