Needham Mechanical is a Mitsubishi Diamond Contractor

You’ve done your homework and you’re sold on the benefits of a Mitsubishi Electric ductless solution compared to traditional heating and air conditioning options. The next step – finding a reputable HVAC contractor – is the place where many homeowners hesitate.

How can you be sure a contractor is familiar with the technology and will provide a satisfactory result? If you’ve spent any time renovating, you can understand the apprehension behind this question. It is important to find the right contractor to make certain you have a professional installation.

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 air conditioning system, consider choosing a Diamond Contractor like Needham Mechanical. Give Needham Mechanical a call today! Read the whole article about choosing a Diamond Contractor certified by Mitsubishi here.

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