Lavallee Systems

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Claim This BusinessAbout Lavallee Systems
Lavallee Systems delivers comprehensive home comfort solutions across eastern Massachusetts, combining plumbing expertise with full-spectrum heating, cooling, and water heater services. Based in North Oxford, the company maintains a 4.9-star average across 15 client reviews, with service areas covering Acton, Concord, Newton, Wellesley, and surrounding communities. Operating Monday through Friday from 7:30 AM to 5 PM, their team handles both scheduled maintenance and urgent callouts for residential properties throughout the region. The business offers dedicated emergency response for plumbing crises alongside planned installations for major systems including furnaces, heat pumps, air conditioning units, and water heating equipment.
Technical precision distinguishes this contractor from standard installation companies. Their heat pump services incorporate Manual J load calculations, a detailed cooling and heating load analysis that determines properly sized equipment for specific homes rather than applyinggeneric rules of thumb. They feature Mitsubishi mini split systems as a featured product line, offering the ductless configuration popular in home additions and older properties lacking existing ductwork. Beyond traditional HVAC, their water quality division addresses whole-house filtration, recognizing that clean drinking water ranks among homeowner priorities in areas with municipal supply concerns. The service menu reflects a genuine multi-trade capability rather than narrow specialization.
Client experiences shared in reviews illuminate real-world capability. Sarthak Jagetia described a complete heat pump installation where the design phase included full Manual J calculations, followed by professional installation work from Jon and his crew who maintained site cleanliness and completed permit documentation. In the brutal February cold snap of recent memory, Ed Bajwa contacted them when another contractor's heating system failed during minus-ten-degree conditions, with Sam providing technical guidance and technician John restoring proper system function. Additional reviewers praised repair work on aging central air systems and noted courteous young technicians who communicated clearly throughout service calls.
What Customers Say
Fourteen of fifteen reviewers award five stars, with Sam and John mentioned by name across multiple accounts for technical skill and customer communication. Common themes include thorough diagnosis before proposing repairs and willingness to explain system operation.
Working Hours
| Sunday | Closed |
| Monday | 7:30 AM–5 PM |
| Tuesday | 7:30 AM–5 PM |
| Wednesday | 7:30 AM–5 PM |
| Thursday | 7:30 AM–5 PM |
| FridayToday | 7:30 AM–5 PM |
| Saturday | Closed |
Services
Plumbing Repair and Emergency Service
Handles leaks, pipe bursts, and drain clogs alongside garbage disposal repairs for residential properties.
Water Heater Installation and Repair
Services traditional and tankless units including gas water heater replacement and ongoing maintenance.
Heat Pump Installation and Service
Provides air source heat pump installs with Manual J calculations for properly sized equipment selections.
Ductless Mini Split Systems
Installs Mitsubishi mini splits ideal for home additions, sunrooms, and older homes lacking existing ductwork.
Furnace and Heating System Work
Handles furnace installation, heating replacements, and repairs across standard and high-efficiency systems.
Air Conditioning Services
Provides AC installation, replacement, maintenance, and repair for residential cooling needs.
Whole House Water Filtration
Installs whole-house water filter systems addressing water quality concerns for municipal supply customers.