It is my company mission to ensure that my HVAC service is done to complete customer satisfaction with attention to details and testing on any A/C or heating system repairs or maintenance at an affordable cost.
we offer services for window ACs, furnaces, hot water tanks and residential boilers.
Overview
Hired 340 times
Background checked
2 employees
8 years in business
Business hours
This pro hasn't listed their business hours.
Payment methods
This pro accepts payments via Cash, Check, Credit card, Square cash app, and Venmo.
Top Pro status
Top Pros are among the highest-rated, most popular professionals on Thumbtack.
2025
2023
2022
2021
Services offered
Property type
Home
Multi-unit building
Office / business
Other
Projects and media
Projects and media
Reviews
Customers rated this pro highly for professionalism, work quality, and responsiveness.
Great 4.8
182 reviews
5
92%
4
3%
3
1%
2
0%
1
4%
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Read reviews that mention:
Etta O.
Aug 28, 2026
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Hired on Thumbtack
William's service was GREAT!! He came on time, was very personable, was accurate in diagnosing the problem with my AC, and fixed the problem within minutes!!! His rate was also the most affordable out of seven other companies I inquired. I HIGHLY RECOMMEND him for all HVAC needs!! He doesn't disappoint.
Details: 1 unit • Need professional to recommend size • Home • Owner
Window, Wall, or Portable AC Repair or Maintenance
Kamilla Z.
Aug 21, 2026
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Hired on Thumbtack
Excellent experience from start to finish! The technician was very responsive, showed up right on time, and went above and beyond to install my in-windowAC unit. Fair pricing, extra care with the installation, and a genuinely kind, caring personality. Fast and professional service—highly recommend!
Details: 1 unit • Need professional to recommend size • Home • Owner
Window, Wall, or Portable AC Repair or Maintenance
Sue F.
Aug 15, 2026
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Hired on Thumbtack
Will Carmichael who owns Sure-Flo did a great job cleaning my PTAC ac units. He explained how they work and was the only person I could find to come out and clean them. Other HVAC companies don’t seem to do it and Will said he does them frequently and it is one of his main jobs that he does. He showed me how he cleans them with high pressure heated water and the process was interesting to watch! Also, he is very personable. I am going to hire him again in the spring to come and do a seasonal cleaning.
Details: 3 or more • Need professional to recommend size • Multi-unit building • Owner
Window, Wall, or Portable AC Repair or Maintenance
Briana H.
Jul 10, 2026
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Hired on Thumbtack
Will be using this company from here on out! My windowAC unit stopped blowing cold air, and he came out same day and fixed it within the hour. Reasonable pricing
Details: 1 unit • 0.5 Tons • Multi-unit building • Owner
Window, Wall, or Portable AC Repair or Maintenance
Angel J.
Jul 22, 2026
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Hired on Thumbtack
Highly recommend for those with WindowAC problems. My Frigidaire AC wasn't cooling William came checked it out and instantly knew what had to be done. my Frigidaire AC is now working properly
Details: 1 unit • Multi-unit building • Renter, with owner's permission to do this job
Window, Wall, or Portable AC Repair or Maintenance
Credentials
Background Check
William Carmichael
FAQs
What should the customer know about your pricing (e.g., discounts, fees)?
My are flat rate pricing for repairs on A/Cs ,Furnaces, Boilers, Hotwater tanks etc... are $50- diagnostic service fee( not including labor and parts).
My labor is flat rate as well for parts repairs or replacement depending on the type of repair.
What is your typical process for working with a new customer?
first...I contact the customer to get more information of the work that needs to be completed, then I set an appointment to access the job . Finally I offer my customer a flat rate fee after an accurate diagnostic .
For customer that only need maintenance work for A/Cs or furnaces that fee only $65 .
What education and/or training do you have that relates to your work?
I have 6 years of academic and professional experience in the HVAC field , I am insured and licensed with a HVAC degree from Coyne College in the downtown chicago area.
