When your air conditioner quits in 115-degree heat, you need an HVAC team that shows up fast and gets it right the first time. Diamond AC & Heating has served homeowners and businesses across the Phoenix Valley since 2008 as a family-owned, licensed contractor (Arizona ROC #321659). We provide expert AC repair, air conditioning installation, heating and furnace service, and indoor air quality solutions — backed by upfront pricing and 24/7 emergency availability.

Whether you’re facing a sudden breakdown, weighing a new system installation, or scheduling a seasonal tune-up, we make the process simple and transparent. Our technicians diagnose the real problem instead of guessing, explain your options in plain terms, and give you a firm price before any work begins — so there are no surprises on the bill. We service both residential and commercial properties throughout Phoenix, Scottsdale, Mesa, Chandler, Glendale, Tempe, Peoria, Gilbert, and surrounding communities.

Our full range of services includes AC repair and replacement, furnace and heat pump repair, ductwork and duct cleaning, smart thermostats, air purification, and preventive maintenance plans that help you avoid breakdowns and extend the life of your equipment. From a single-room mini-split to a full commercial rooftop unit, we have the licensing and experience to handle it.

At Diamond AC & Heating, doing things right means showing up on time, being straight about what your system actually needs, and never upselling you on equipment you don’t. That’s why Phoenix homeowners have left us hundreds of five-star reviews — we treat customers like neighbors, because they are.

If your AC or heating isn’t keeping up, don’t wait for a small problem to become an expensive one. Call (602) 753-5375 for fast, honest HVAC service anywhere in the Phoenix Valley — or request a free estimate today.