Analyzing 9,840,2499.8M ReviewsFor 27,70927.7K Experts
Google reviewers rate the company 4.9 out of 5 based on 983 reviews, with the owner responding to 57 percent of them. Customers frequently praise technicians for punctuality, professionalism, and clear communication during HVAC maintenance, repairs, and installations. However, some low-star reviews criticize high pricing for specific services like drain snaking and parts replacements, suggesting that costs can be unexpectedly elevated or that upselling tactics are employed.
Data from Google, last updated November 11, 2026.
Score per factor (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.
Bar = this company · dark tick = category median.
983 Google reviews we collected
Phrases our text analysis found in 745 written reviews
Price verdicts customers left with their Google review
Middle half of what 24 customers paid ($78–$792) · gold mark = category median.
How often each topic comes up in the written reviews
We read 745 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“He was knowledgeable, friendly and efficient, will definitely request him in the spring for air conditioner.”
“Our serviceman, Brennan, arrived right on time, went right to work, stopped to answer a few questions and did a great job.”
“I asked him about possibly replacing a water valve running to my humidifer for water flow as it had a very very slow drip leak(thought valve was bad).”
“Branden came out and performed a thorough and detailed servicing of our system, explaining what was necessary and what wasn’t.”
“Sorry it didn't work out, maybe a need to reevaluate your costs!”
“Highly recommend this company and plan to use them again in the future!”
“Never again will invite this company for any work on my house.”
“Used Service1 for the annual servicing of our AC system and it was well worth it!”
“They are completely overpriced, however the repair man was professional and nice.”
“Vance was very nice and answered all our questions and made sure everything went smoothly!”
“I found Vance to be a person of integrity in the time and conversation we shared.”
“But now she needs to replace much more due to their shady tactics.”
praise complaint · found by our text analysis, Google review wording unchanged.
Customers hired Service 1 Plumbing, Heating & A/C, Inc. for 8 kinds of job. Pick one to see what they paid and said.
Had 3 new toilets installed by Al and Nate. Very happy that we chose this company! So easy from scheduling to the final install. The technicians were great!
Our serviceman, Brennan, arrived right on time, went right to work, stopped to answer a few questions and did a great job. He was knowledgeable, friendly and efficient, will definitely request him in the spring for air conditioner.Thanks.
Used Service1 for the annual servicing of our AC system and it was well worth it! Branden came out and performed a thorough and detailed servicing of our system, explaining what was necessary and what wasn’t. Highly recommend this company and plan to use them again in the future!
I had service for routine maintenance. Vance was extremely professional, very informative and thorough during the service.
Exceptional service! Arrived on time was efficient and professional. Took good care to not track in house, etc. Highly recommended!
John was on time, very detailed, very professional and did a great job. Highly recommended.
| 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 | — |
4.9 ★★★★★ 983 reviews on Google · rating breakdown
Reviews from Google, shown as published (original wording, unedited).
Fast and efficient
Thank you, Andrea, for your kind words about Service One Heating & A/C, Inc. We appreciate your feedback!
Had 3 new toilets installed by Al and Nate. Very happy that we chose this company! So easy from scheduling to the final install. The technicians were great!
Thank you, Mary, for your wonderful review! We're thrilled to hear you had a great experience with Al and Nate during your toilet installation.
Our serviceman, Brennan, arrived right on time, went right to work, stopped to answer a few questions and did a great job. He was knowledgeable, friendly and efficient, will definitely request him in the spring for air conditioner.Thanks.
Hi Lynda Langner, thank you for your glowing 5-star rating! - Service One Heating & A/C Of Illinois LLC
Love working with service one and the service people are also very nice and friendly. Brandon is great to work with.
Hi Pat Srail, Your review means a lot to us. We always strive to give our best to help our clients. Thank You for choosing Service One Heating & A/C Of Illinois LLC
Used Service1 for the annual servicing of our AC system and it was well worth it! Branden came out and performed a thorough and detailed servicing of our system, explaining what was necessary and what wasn’t. Highly recommend this company and plan to use them again in the future!
Hi Michelle Mathys, thank you for taking the time to review us. - Service 1 Plumbing, Heating & A/C, Inc.
The technician did a good job with my tune up. Will use again.
Thank you for sharing your positive experience with our technician. We're delighted to hear that you were satisfied with the tune-up service. We look forward to serving you again in the future!
If it was possible to grade the service I received a ten out of ten I would because the service was exceptional. I was impressed with the professionalism of Vance the technician and the level of knowledge and expertise. He took the time to make sure I understood what he was doing and why. Also he shared tips every homeowner would find valuable in knowing how to make sure their HVAC system is working optimally. I found Vance to be a person of integrity in the time and conversation we shared. I've one suggestion to the owner/management , since I know we haven't cloned humans yet, give him a raise !!!!!!!!
Thank you for sharing your positive experience with our service. We're thrilled to hear that Vance provided exceptional service and valuable insights. Your feedback about his professionalism and expertise is greatly appreciated. We will certainly pass along your kind words to him. Thank you for your suggestion and for choosing us for your HVAC needs!
I had service for routine maintenance. Vance was extremely professional, very informative and thorough during the service.
Thank you for sharing your positive experience with our service. We're delighted to hear that Vance provided professional and thorough assistance during your routine maintenance. Your feedback is greatly appreciated and encourages us to continue delivering excellent service.
Too notch service as always
Thank you for your 5-star rating! We're delighted to know you had a positive experience with us.
Alway professional and friendly. Always happy with the service
Thank you for your kind words and for taking the time to share your experience. We're thrilled to hear that you consistently find our service professional and friendly. Your satisfaction is our top priority, and we look forward to serving you again.
Analyzing 9,840,2499.8M ReviewsFor 27,70927.7K Experts
