-- Steve Kiener, a local resident of Keystone Heights and experienced HVAC technician, has launched Kiener's Heating & Air Conditioning, a locally owned company providing air conditioning repair, heating service, maintenance, and system installation to homeowners throughout Northeast Florida. After years of working for local HVAC companies, Steve took the step in 2026 to become self-employed, a lifelong goal of his. The business now serves residents in Keystone Heights, Jacksonville, Middleburg, Orange Park, and surrounding communities along the SR 21 corridor, with the goal of giving local homeowners a local option for both routine and emergency HVAC needs.
“Lots of the companies in Clay and Duval counties have been acquired by out-of-state private equity. Sometimes that means better technology but more often than not, it means higher prices and standardization that may not be the best fit in Florida” said Kiener. “What works in other states isn’t always the best choice in Florida and I like having the flexibility in my own business to do what is right for the homeowner and what will keep up with our hot summer nights.”
Kiener spent more than ten years working in the HVAC business before deciding to open his own shop. His background is somewhat unusual for the industry. He holds a bachelors degree in finance, a field he studied because he was drawn to problem solving and numbers, but he found himself pulled toward work that let him use his hands as much as his head. HVAC service ended up giving him both. Diagnosing a failing compressor or tracing an electrical short calls for the same kind of methodical thinking he once applied to balance sheets, and he has carried that analytical habit into every job he takes on.
That combination shows up in the way Kiener approaches a service call. Rather than treating a repair as an isolated fix, he looks at the entire system, from the condenser outside to the ductwork running through the attic, so that homeowners get an accurate picture of what is happening and what their options are. Kiener is NATE certified, a credential from North American Technician Excellence that reflects ongoing training in HVAC installation and service standards, and he has built his new company around that same level of technical grounding.
Keystone Heights sits in Clay County, a part of Northeast Florida where long summers and heavy humidity put steady demand on air conditioning systems. Kiener said that reality shaped how he structured his business from the start.
"I live here and I’m raising my family here, so I know what it’s like when your AC goes out in the middle of July and you’re stuck in the heat waiting on someone to call you back," said Kiener. "I am building my company around the idea that you can always get a real person on the phone to help, day or night, and you don’t have to wait around for an important fix while your kids, spouse, or elder can’t sleep."
That availability is a central offering of the new company and surprisingly rare in Northeast Florida where many HVAC companies offer 24-hour answering service but struggle to staff the evening hours with technicians. Kiener's Heating & Air Conditioning offers 24 hour emergency service, so homeowners dealing with a system failure in the middle of the night or on a weekend are not left waiting until regular business hours.
The company also provides free estimates for system replacement and installation, along with free second opinions on repair quotes over a certain threshold, giving homeowners a way to confirm a diagnosis before committing to a major repair.
Beyond emergency calls, the company handles the full range of residential HVAC work, including air conditioning repair, heating and furnace repair, routine maintenance, indoor air quality services, dehumidifier installation, and ductless mini split systems for garages, additions, and other spaces that fall outside a home's existing ductwork.
Kiener services all major equipment brands, including Carrier, Trane, Bryant, Lennox, Rheem, Goodman, Mitsubishi, and Daikin, which allows him to work on any system regardless of who installed it originally.
Having worked for other HVAC contractors for years, Kiener said he had seen firsthand how technical skill alone does not always translate into a good customer experience. He built his new business around straightforward communication, showing homeowners the honest condition of their equipment and walking them through repair, maintenance, or replacement options without pressure.
For Kiener, the appeal of the trade has never been just about the technical side. The finance background he built in college still comes in handy when he is helping a homeowner weigh the cost of a repair against the cost of replacing an aging system, since that kind of decision often comes down to the same type of thinking he studied in school. Pairing an analytical approach with hands-on technical skill has become something of a signature for how he runs his business, and it is part of what he hopes will set Kiener's Heating & Air Conditioning apart from other places.
The company operates out of Keystone Heights, with a second office location in Jacksonville, and serves a service area that extends to Middleburg, Orange Park, Lakeside, Avondale, Riverside, San Marco, and other nearby Northeast Florida communities. Homeowners can request service by phone or by submitting a request through the company's website, where they can also review the full list of services offered. Homeowners in Keystone Heights and the surrounding Northeast Florida area can also visit the company's about page to learn more about Kiener's background and licensing, or request service directly online.
Contact Info:
Name: Stephen Kiener
Email: Send Email
Organization: Kiener's Heating & Air Conditioning
Phone: (904) 231-8873
Website: https://kienersac.com/
Release ID: 89197514
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