

Investing in a Mitsubishi Electric ductless or multi-zone heating and cooling system is a smart choice for homeowners and businesses looking for comfort, energy efficiency, and long-term reliability.
But selecting a qualified HVAC contractor can feel overwhelming. You want to be confident that the installer understands the technology, uses best practices, and can stand behind the work performed.
This is where All Air Systems Heating and Cooling shines. As a proud Mitsubishi Electric Diamond Contractor serving Monmouth, Ocean, Middlesex, and Mercer counties, we deliver more than standard HVAC installation. We provide peace of mind through advanced training, trusted expertise, and customer-first service.
What Is the Mitsubishi Electric Diamond Contractor Program?
The Diamond Contractor program was created to help homeowners connect with contractors who have proven expertise in Mitsubishi Electric’s innovative ductless and multi-zone systems. This designation is not handed out lightly. Contractors must complete extensive, ongoing training and meet strict performance standards in order to achieve and maintain Diamond status.
By working with a Diamond Contractor, you gain access to professionals who are continually educated on new equipment, industry trends, and installation techniques. This means your home’s comfort system is designed and installed by technicians who understand the details that matter.
The Value of Working With a Diamond Contractor
Personalized Education and Free Consultation
Every home is different, which means heating and cooling solutions must be tailored to your space. One of the biggest advantages of working with a Diamond Contractor is the attention to detail provided during the consultation stage.
At All Air Systems, we offer free in-home consultations to assess your comfort needs, the layout of your home, and your energy efficiency goals. From there, we recommend the right system—whether a single-room ductless unit or a whole-home zoned comfort solution.
Our team also stays current with available rebates and New Jersey energy efficiency programs. By identifying qualifying equipment, we can help lower the upfront investment and maximize your long-term savings.

Expert Installation Backed by Specialized Training
Even the most advanced HVAC equipment cannot perform as designed without proper installation. Mitsubishi Electric ductless systems require careful sizing, placement, and setup to ensure quiet operation, efficient performance, and consistent comfort.
As Diamond Contractors, our technicians have specialized training that sets us apart from general HVAC installers. From correctly mounting indoor air handlers to integrating ducted systems when needed, we take the extra steps that make each install perfect.
This expertise translates to fewer callbacks, improved efficiency, and a system that provides lasting comfort through every season.
Industry-Leading Warranties for Added Peace of Mind
Another reason homeowners choose a Diamond Contractor is the enhanced product warranty available only through certified professionals. Mitsubishi Electric already offers reliable coverage, but when your system is installed by a Diamond Contractor, you gain access to the industry’s strongest protection.
Standard warranties typically include five years on parts and seven years on the compressor. With Diamond Contractor installation, those terms extend to 12 years for both parts and the compressor, provided the system is installed in a single-family home and registered within 90 days.
This additional coverage safeguards your investment, giving you confidence that your system will deliver consistent comfort well into the future.
Why Homeowners in New Jersey Choose All Air Systems

Choosing the right contractor is just as important as choosing the right HVAC system. At All Air Systems, our goal is to make the entire process—from consultation to installation and maintenance—stress-free and transparent.
As a Mitsubishi Electric Diamond Contractor, we combine state-of-the-art technology with decades of experience serving New Jersey homeowners. Our clients count on us for:
- In-depth product knowledge and honest recommendations
- Free consultations designed around your comfort goals
- Skilled installation with attention to detail
- Guidance on rebates and financing programs
- Extended product warranties for greater protection
- Ongoing maintenance and support after installation
Our service area includes Monmouth, Ocean, Middlesex, and Mercer counties, allowing us to deliver reliable heating and cooling solutions to a wide range of homes and businesses.
Partner With a Diamond Contractor for Lasting Comfort
Installing a Mitsubishi Electric ductless or multi-zone system is an investment in comfort, efficiency, and long-term savings. To make the most of this investment, choosing a qualified installer is essential. Diamond Contractors represent the highest standard of training, product knowledge, and customer service available in the HVAC industry.
When you partner with All Air Systems Heating and Cooling, you gain more than an installation. You gain a trusted local partner dedicated to your comfort, your savings, and your satisfaction.
If you’re ready to experience the benefits of Mitsubishi Electric’s advanced heating and cooling solutions, schedule your free consultation with All Air Systems today.


