• Welcome


    Diamond HVAC is a full-service heating, ventilation and air-conditioning contractor for residential and commercial customers.

    Our technicians have the training, tools and experience to handle a complete range of heating, air-conditioning and air-quality services...

    Read More
  • Full Service HVAC

    Full Service HVAC

    Diamond HVAC installs, maintains and repairs residential & commercial...

    - Heating: oil, gas, electric, boiler, radiant
    - Air conditioning: electric, heat-pump
    - Air quality systems: filtration & UV
    - Electrical Services

    Read More
  • The Diamond HVAC Advantage

    The Diamond HVAC Advantage

    Our commitment to you is complete satisfaction through professional and personal services. * System Audits and Consultations * Repair Service (All Major Brands) * Preventative Maintenance * Installation - New Construction & Remodeling (commercial and residential) System Audit Read More
  • Preventive Maintenance

    Preventive Maintenance

    Regular tune-ups saves money by extending your HVAC equipment life and reducing the number of expensive repairs. Our knowledgeable staff will help you select the Preventative Maintenance program that is best for your home or office...

    Read More
  • 1
  • 2
  • 3
  • 4

Brands we Carry & Service

Diamond HVAC has a long standing relationship with all of the top HVAC manufacturers and brands.

We know and work with companies who build quality and stand behind their products.

Some of those vendors include Lennox, Rheem, Weather King, Trane, Honeywell, Aprilaire, Berko, Suburban Manufacturing, Daikin, Unico Systems, SkyMark, Magic-Pak, Johnson Controls, Ruud, and Hart and Cooley.

Read More

Help & Tips

  • Check the License +

    HVAC contractors must be licensed in New Jersey and hold a current, valid license. Ask to see Read More
  • Professional and Trade Memberships +

    Is the contractor a member of North American Technician Excellence (NATE)? NATE is the leading certification program Read More
  • Get Competitive Bids +

    Do not automatically accept the contractor with the lowest price. First, make sure all bids are based Read More
  • Is the HVAC Contractor Insured? +

    In New Jersey, the law requires workers compensation insurance coverage for licensed contractors. Ask the HVAC contractor Read More
  • Check References +

    Ask the HVAC contractor for local references. Call to see if they were satisfied with the work. Read More
  • 1

Site Search

It's Not Magic

Reduced Costs with Increased Comfort is feasable for your home or office.

Find out about our Comfort Club and get Peace of Mind.

Read More

NJ License 13VH03193900

Member Access