Above and beyond all expectations! Doug Rumpf the owner and his team went out of their way during the hottest month of the year to be sure our family was taken care of.
The level of expertise, courtesy and kindness was truly amazing and something we have not seen in years.
They were truthful with what we needed and gave an honest and fair price. Incredibly professional!
Our family recommends Sub Zero Air for any and all HVAC services in the Keys!!!!
Thank you all again so much for your hard work!!!!
About SUB ZERO AIR
SUB ZERO AIR is a top-notch, reliable HVACR company in the Upper Keys, locally owned and operated. With a fully stocked shop in Key Largo, they provide speedy customer service and quality work. Doug, the owner, always answers calls and ensures that customers are well-informed about their AC needs. The technicians are efficient, professional, and genuinely care about their customers. They respond quickly to AC issues, offering thorough evaluations and photo-documented work at great prices. Customers have praised the incredible response time, with technicians arriving promptly and resolving problems efficiently. One customer highlighted how SUB ZERO AIR fixed a dead-of-summer coolant leak at a fraction of the cost of a new system. Highly recommended for AC repair and maintenance, SUB ZERO AIR is a trusted name in the community. Their team is extremely friendly and dedicated to customer satisfaction, making sure that clients can relax without the heat. Additionally, they provide excellent service for installations, like icemakers, ensuring everything works perfectly.
Reviews
Absolutely outstanding service from start to finish! The technician was knowledgeable, professional, and took the time to properly diagnose the problem. Highly recommend this company to anyone looking for honest, reliable HVAC service.
Excellent Service — Highly Recommend Sub Zero Air
Our air stopped working around 7 PM, and I called Sub Zero Air. They immediately responded, answered my questions, and committed to being there first thing the following morning.
They quickly determined the fan motor was the problem, installed a replacement, and we had cold air again shortly after lunch. Communication throughout the entire process was excellent, the price was extremely fair, and the service was professional and delivered with a smile.
Great experience from start to finish. I would highly recommend Sub Zero Air to anyone needing reliable and honest A/C service.
Photos

Hours
Good to know
- on-site services
- accepts credit cards
Location
101425 Overseas Highway Ste 300, Key Largo, FL 33037
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