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Lavallee Systems is a North Oxford plumbing, heating and cooling company that says it was founded in 1991 and serves Central and Eastern Massachusetts. It holds 4.9 stars from 16 Google ratings and an A+ from BBB. The reviews center on heating and cooling. In a May 2025 review, a customer said the company installed an air source heat pump; an August 2024 customer said Payton and Devin repaired a 15-year-old central air system. A February 2023 reviewer wrote from a comfortable house at -10F. In June 2026, a customer who works with Jim and his crew on renovation projects said they had also done work in their own home.
“Working at Lavallee Systems: Employee Reviews | Indeed.com ... # Working at Lavallee Systems: 4 Reviews ... ## 4 reviews ... ### Growing and Succeeding with Lavallee Systems ... North Oxford, MA ... Lavallee Systems truly cares about quality work and makes sure everyone, whether in the field or office, gets the training they need. I’ve been with Lavallee Systems for over five years and have seen how the company supports us with hands-on learning, strong leadership, and a focus on doing the job right....Show more ... ### Caring owner really good culture ... I’ve worked for Lavallee systems for”
I work with Jim and Co often on our renovation projects, and they have also done some work in my own home and they do an excellent job. Great plumbers and techs, do recommend
Lavallee Systems recently installed an air source heat pump, and I’m extremely happy with the entire experience. Sam was incredibly thorough with his design process—he performed a full Manual J calculation and used that data to recommend the appropriately sized heat pump for my home. Jon and his team were professional, efficient, and showed great attention to detail throughout the installation. The office staff was also very helpful and ensured that the permit was closed on time.
Lavallee Systems are top notch and really set the bar for HVAC installation companies
Payton and Devin repaired my 15 year old central air system. They were professional and punctual. I highly recommend Lavalle Systems to my friends and neighbors.
Markez cotto is a awsome person he did a great job and he is polite young man
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1 change recorded — last scanned Aug 9, 2026.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Lavallee Systems. 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