Verified record
LeBlanc Mechanical is a Waltham heating and air-conditioning company, and in a 2021 BuildZoom review a customer said that when the heater stopped working mid-winter, the company repaired the furnace that day. LeBlanc Mechanical's Massachusetts HVAC license, 894-SM-B, is active on the state registry. A 2016 wickedlocal.com article described LeBlanc as the owner of LeBlanc Mechanical, which it said had been in business in Waltham for nearly 20 years. In a 2023 Google review, a customer said the company gave an AC service appointment more than a month out and did not make the reminder call it promised. That 2023 customer said the receptionist could not find the appointment, a promised callback did not come, and the company later said it had messed up the appointment and could not come that day. That 2023 customer said that when a worker did come, he said nothing was wrong and that service needed its own appointment. That 2023 customer called the next day because the AC was making ice, and said no one called back after 10 calls.
“Owner and operator of Leblanc mechanical, heating and air-conditioning for 30 years.”
“I grew up in the construction field and for over 30 years have owned and operated Leblanc Mechanical, a local heating and air-conditioning company.”
“Leblanc has his post secondary certificate degree and has worked for Leblanc Mechanical HVAC for a quarter century.”
“LeBlanc is the owner of LeBlanc Mechanical, which has been in business in Waltham for nearly 20 years, and specializes in the service and installation of all HVAC needs.”
I make appointment for my AC service and check why is not cooling they gave me appointment after more than a month , they said they will call me a day before to remind . They didn’t call me . Then I called to ask I have appointment tomorrow, receptionist ask me every thing she can’t find my appointment she said I will call you back but she didn’t after 2 hours I called again no response 4 times I called them some one pick up phone same thing can’t find say I will call you back yes he called back and say we messed up appointment so can’t come that day May be next day . Finally guy show up I said for check what’s wrong in couple of minutes he said nothing wrong I was happy I as him do service . He said need to make appointment. I called next day because my AC start making ice , again I called lady pick she said she will call me . After 10 calls no one call me back so don’t recommend this company.
When my heater stopped working mid-winter I called Leblanc Mechanical, and they were able to repair my furnace that day! This company has excellent customer service and quick response time.
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2 changes recorded — last scanned Sep 9, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from LeBlanc Mechanical. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$5,000 – $11,400
Typical HVAC project around $8,200
Transparent diagnostics5.0
Same-day and weekend calls for burst pipes and lost heat5.0
Broad plumbing and HVAC range5.0
Repeat, years-long customers5.0
Water heater and boiler installs5.0
Active state license4.2
