Diamond HVAC

At Diamond HVAC, we believe your comfort should never come with compromise. As a family-owned business proudly serving Brooklyn and the surrounding areas, we bring over 35 years of combined experience to every job — blending expert craftsmanship with old-school integrity. Our company was founded on a simple principle: do the job right and treat every customer like family. Whether we’re installing a brand-new HVAC system, providing seasonal maintenance, or diagnosing a complex issue, we take the time to do it thoroughly, honestly, and with your best interest in mind. We specialize in both central and mini-split systems, offering tiered maintenance plans, precision installations, and responsive service that’s always professional and respectful of your home. We know that heating and cooling systems are a major investment, and we’re here to help you get the most out of yours — with fair pricing, expert guidance, and work you can count on. From the moment you contact us to the final walkthrough, you’ll see what sets Diamond HVAC apart: honesty, reliability, and a commitment to lasting comfort. Your satisfaction isn’t just a goal — it’s our reputation.