What to Look for in a Contractor

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The Massachusetts contractor’s license: why it matters:

Whomever you choose to service your home should be a qualified, trustworthy individual. We believe any tradesman who comes into your home should be fully licensed. Why does it matter?

Insurance and Liability

If a contractor is unlicensed, it’s likely that he or she isn’t insured either. How will he pay you for any accidental damage? If you’re thinking homeowners insurance will protect you, think again. Most coverage plans only cover work done by licensed contractors. Plus, if the contractor gets injured on your property, you could be at fault!

Building Code Compliance

If the project is not built to code, or a permit is not pulled, the work may have to be removed or re-done properly. This is a costly inconvenience, and is easily avoidable by following the proper steps. A licensed contractor follows the rules.

Testing and Certification

There’s a reason licensed contractors are required to learn the trade and pass the tests. Allowing an unqualified, inexperienced contractor to do any type of work on your home is a major risk. Contractors lacking qualifications may also deliver very low quality work. Verify your contractor’s license number here.

Criminal Backgrounds and Scams

Unlicensed contractors may have criminal backgrounds, which include fraud and theft. What happens if you place a deposit to a contractor who never comes back to do the service? Save yourself the worry and hire someone you know you can trust.

Call us at 978-750-8282 or

Ten things to consider when choosing a contractor:

  • Check their credentials.

  • Did they size your system properly?

  • Ask for references.

  • Did they perform an on-site evaluation of your home?

  • Check local license.

  • Don’t be afraid to ask questions.

  • Get it in writing.

  • Ask about equipment and labor warranties.

  • Ask about preventative maintenance and service contracts.

  • Insist on a written contract.

If you are not happy or confident with your system installed by another contractor, call today for your FREE Professional System Evaluation!

Four Factors That Determine The Proper Comfort System For Your Home:

  1. Technical Requirements (Can’t change)
    How many square feet of living space does your home provide? What style is the layout or the floorpan? One, two, or three story? How does the construction determine the type of heating and/or air conditioning required?
    Is it designed for hot water heating, steam, or forced air? The size or configuration of your home will effect the size of your system.
  2. Code Requirements (Can’t change)
    What are the building and safety requirements of your town, city, or state? Strict safety and code requirements could significantly effect the cost of installation.
  3. Environmental Choices (Your choice)
    There are products available today that did not exist just ten years ago, designed to enhance the comfort your system provides. They are designed for the purity and freshness of the air you breathe and the convenience of your system’s operation and maintenance. Obviously, the more accessories you add, the more expensive your complete system will be.
  4. Expertise in installation/Service (Your choice)
    Our technicians are as focused on their professional capabilities as they are on their moral convictions. They are factory-trained, certified and fully experienced.
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Celebrating Serving the North Shore Since 1991

These guys were awesome! I had Rob come out for my yearly maintenance on my furnace before the cold weather set in. He was professional and explained things well. He was on time too! They were about $100 less the other people I got quotes from and it included a new filter! So pleased.
Grace T, Boston MA
Brian just left and he is a Godsend! He made several calls to clear the work with my working husband and myself, all of which he did with great patience and professionalism. He was easy to talk with and showed me respect... I would refer this company to my best friend and family anytime!
Lynne M, Topsfield, MA
We have been using PREFERRED AIR for a number of years. I have nothing but praise for them. Our technician Louis is very professional, courteous and always takes the time to explain whats wrong in layman's terms. Thumbs up to a great company, who has top notch people working for them.
Margaret M, Beverly MA
Preferred Air has done countless jobs for me. Installations, maintenance, repairs, you name it. There is a reason you continue going back to a company time and time again, quality, service and knowledge, each and every time the folks at Preferred Air have exhibited all three.
Steven F, Swampscott MA
I found a puddle of water around my HVAC and was very worried. I called them at 7am hoping to only leave a voice message. Louis answered the phone and he was professional and compassionate. I really appreciate his help. Preferred Air will be my go-to company for any future issues!
Danielli T, Frederick, MD
This is a great company that installed a new system in our home. They did a great job and I highly recommend them to anyone who needs a replacement system. They were quick, friendly and professional. The cost was reasonable and we were very happy with the end result.
Ronald C, Peabody MA
Luis was awesome!! He was extremely professional and it was obvious from the outset that he knew exactly what he was talking about. He checked everything thoroughly and advised me on the things that I could do on my own to fix any future issues. Highly recommend!! A++++++++
S.B, Beverly, MA
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