Air Quality

Whole-home indoor air quality solutions are vital to the health and comfort of your family. When your HVAC system removes allergens, pollutants and toxins from the air, as well as controls humidity – your family can breathe easier.

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Cold air outside + your furnace = dry, itchy skin. Whole-home humidifiers distribute humidity throughout your home using your existing heating system. The humidifier is fed directly from your home’s plumbing and uses electrode technology to create steam when there is a need for more humidity. This eliminates the need to buy, refill and regularly clean multiple portable humidifiers. Not only does your health benefit from the added moisture, your hardwood floors, paint and furniture will be less prone to drying out, peeling or cracking.


Some homes, or areas within a home such as a finished basement, have too much humidity – particularly during the summer months. Dehumidifiers offer a solution to pull moisture out of the air – ridding your home of the damp air that not only leaves you feeling cold and clammy, but also encourages mold growth.

Air Filtration/Purification

Dust mites and microbes and bacteria… oh my! You may not want to know what unseen dangers are lurking in the air in your home. However, the solution to providing clean, pure air can be added to your home’s forced hot air or central air-conditioning system. System fans blow the air through filters as it circulates through your home. Several types of systems are available. Let us recommend the right system for your home, as well as a service plan to keep your air and HVAC system clean.

Make-Up Air Systems

Newer homes are often constructed so well-insulated and air-tight that fresh, outside air can’t get in. This is particularly dangerous when you have a hood vent over your stove. In fact, every time an exhaust fan pulls air out of your home, an equal volume must replace it, known as “make-up” air. If enough air doesn’t enter the home through passive ventilation (random leaks around windows, doors etc.), make-up air can be pulled in through water-heater flues or down chimneys which can cause dangerous gasses, such as carbon monoxide, to be drawn in through back drafting.  Make-up air systems are installed to ensure that only clean, fresh air is pulled in.

Energy Recovery Ventilation

The Aprilaire Energy Recovery Ventilator (ERV) exchanges stale, polluted indoor air with fresh, clean outdoor air throughout your entire home without wasting energy. It is installed as part of your central heating and cooling system, or as an independent system. Reduce VOCs, odors, and humidity with less impact on your energy bills.  

  • Jim and his crew did such a great job with the plumbing during my kitchen remodel that they are the only ones I call whenever I have a plumbing or furnace issue.

    Kate G.
  • The Lavallee team took the time to understand our heating and cooling issues before making a recommendation for a mini split system. In the end, the mini splits were the answer to our temperature problems - they made a huge difference in our home.

    Nancy S.
  • At FBN we believe that first and foremost we are a “customer service organization.” Our growth and success have been through surrounding ourselves with like-minded people and companies that believe that as well. Lavallee Systems has supported and enriched that approach through their timely response and excellent service over the years, and we would recommend them highly. They “get it” and are a great partner with us in caring for our clients’ homes.

    Bob Ernst FBN Construction
  • Jim Lavallee and his team are awesome! Great communication, easy to work with and very highly skilled. They are our go-to trade partner for HVAC and plumbing.

    Kevin Cradock Kevin Cradock Builders
  • As Architects, we truly appreciate HVAC Contractors who can work collaboratively with us to achieve a house that performs as beautifully as it looks.  Jim and his team are a dream to work with.  We recommend them without reservation for their in-depth knowledge of systems old and new, their thoughtful problem-solving skills, and their friendly and reliable service.

    Rachael (Sansom) Kraft Hickox Williams Architects
  • I have had the pleasure of working with Lavallee Systems on several occasions where they installed HVAC systems designed by us at SUN Engineering, Inc. We design only high-end HVAC systems for the most discriminating architects, homeowners, and builders in the Boston area. The projects on Commonwealth Ave and at Rowe’s Wharf in Boston were very challenging with little room for HVAC modern systems, and they performed flawlessly.

    Their workmanship was impeccable, the site coordination and professionalism second to none and we will continue to suggest them for high end residences in the future.

    Sean Fennessy Sun Engineering
  • Having worked closely with Jim and Lavallee Systems for the last 5 years on many projects, including a couple that were exceedingly complex, I can honestly say that their focus on technical knowledge and customer service coupled with their "can do" approach, make them a welcome collaborator for Adams + Beasley.  Every project encounters unforeseen obstacles, in-process curveballs, and client requests that challenge the team.  Lavallee Systems employs an approach to quickly propose solutions, help the team adjust their sails, and keep the project on track.  We are grateful for our ongoing relationship."   

    Eric Adams Adams + Beasley Associates
  • We have had nothing but excellent experiences with Jim Lavallee and his team of expert plumbing and HVAC specialists. They are creative problem-solvers, professionally astute, and accommodating. They listen, offer cogent explanations of equipment and methodologies, and look for solutions that integrate with the architecture and design intent of our projects. Not only have they been a vital part of our architecture and construction teams, but we readily recommend them when clients or past clients need help. It is a pleasure to be able to pass their name on to people we care about.

    Maggie Booz Smart Architecture
  • Lavallee Systems has become our go-to HVAC subcontractor. Their long experience in the industry and their commitment to staying ahead of the curve has proven invaluable, particularly as we have transitioned more and more to heat pump technology. They are courteous and professional, and they always stand behind their work. We couldn’t ask for a better partner for our remodeling projects.

    Rachel White Byggmeister