Note: We only service ductless units that we install
Mitsubishi Diamond Contractor

Mitsubishi Diamond ContractorWe’re happy to announce that Vasi Refrigeration Inc. has been recognized as a 2022 Mitsubishi Diamond Contractor!

This is great news for homeowners and businesses in the Boston and North Shore area because you can be sure that you’ll receive the highest quality service and support on the entire line of Mitsubishi’s excellent air-source heating and cooling products.

To help make the decision process easier, Mitsubishi Electric created the Diamond Contractor® program. This multi-stage, in-depth training ensures professionals are kept up-to-date on equipment, new industry technologies and installation best practices.

So why hire a Diamond Contractor?


Product knowledge and education are two areas in which Diamond Contractors excel over the competition. During a free, in-home consultation, they’ll help you understand which system is well-suited for your comfort, efficiency and wellness goals, that also takes into account the size and layout of your home.

Large and small houses have vastly different temperature-control needs and these factors can impact whether you choose a single- or multi-room unit. Finding the right fit and accurately quoting a cost estimate requires intimate knowledge of the system.

Diamond Contractors are also well informed on the latest utility programs and rebates. During your consultation, they’ll identify what equipment qualifies for additional savings through your local energy programs. This can help further offset the cost of installing a new HVAC system.


Although ductless technology was introduced to the U.S. over 30 years ago, it’s still a relatively new phenomenon for the average homeowner since forced-air units have previously dominated the market. To understand the ins and outs of this next-generation product, a certain level of expertise is required.

Correctly sizing and mounting an indoor air handler, the wall- or ceiling-hung unit, or ductwork for a ducted system, is vital to the system’s proper operation. This is where a Diamond Contractor’s specialized training comes in. The difference between a passable and perfect install often comes down to your contractor’s knowledge of the technology and experience with ductless installations.

Product Warranty

One of the many perks of hiring a Diamond Contractor is that you’ll receive up to a 12-year product warranty, the most aggressive in the industry. In the case of our Zoned Comfort Solutions®, a standard warranty is fives years for the parts and seven years for the compressor. However, by partnering with a Diamond Contractor, the parts and compressor are warranted for 12 years each as long as they are installed in a single-family home and registered within 90 days from installation. See the product warranty statement for more details. Obtaining a comprehensive warranty not only protects you and your investment but also the comfort of your home.


To get the most out of your Mitsubishi Electric heating and cooling system, consider choosing a Diamond Contractor.

Special rebates on ductless systems

As a Mitsubishi Diamond Contractor, Vasi Refrigeration Inc. can also offer special financing deals to our customers. Paired with the great rebates currently available through MassSave , it means that our customers can save a lot on the purchase and installation of a new air-source heating and cooling system. And since Mitsubishi heating and cooling products offer superior energy efficiency, you’ll enjoy great savings on your energy bills year-round.

Mitsubishi offers a wide range of options, including ductless heating and cooling systems with condensers that can control up to 8 interior evaporators. The interior units are literally as quiet as a human whisper, and the outdoor compressor is quieter and more energy-efficient than compressors in central air conditioning systems. Variable-speed compressors mean that you need to use your system less often to achieve and maintain a comfortable inside temperature. Individually controllable interior evaporator units – which come in a range of colors and styles – mean that you can fine-tune your energy consumption, heating and cooling only the spaces in your home you’re actually using!

Coming Soon:

  1. Synchrony Financing for Mitsubishi Electric Ductless

  2. Extended warranty for labor

If you’d like more information about saving money on your energy bills with ductless heating and cooling from Mitsubishi, please contact us online or call us at (781) 526-1637.

Mitsubishi HVAC System Installation Gallery

As a factory certified Diamond Contractor, we’ve performed hundreds of mini split installations!

We’ve had ton’s of happy customers who’ve benefited from the investment with a lower energy bill and better comfort!

Here is some of our work!

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