Comfort problems don't wait, and neither do we, which is why Corna Heating and Air has been the go-to heating and cooling company for Ocala homeowners, landlords, and businesses since 2001. We show up fast, we give you a straight answer, and we get the work done right. Whether you need a quick AC repair on a sweltering afternoon or a full system replacement you have been putting off, we handle it all across Marion County. Residential HVAC. Commercial HVAC. One number for both. Call (352) 619-9879 for a quote.
Noticing uneven temperatures or a spike in energy bills? Those are the kinds of problems that send people searching for an HVAC contractor, and they are exactly the problems we solve every day. We are a local HVAC company homeowners rely on for the full range of heating and cooling work: AC repair and service, heating repair, heat pump service, system installation and replacement, ductwork, thermostats, indoor air quality, and seasonal maintenance.
When your system is not keeping up, we start with a real diagnosis. That means checking refrigerant levels, inspecting the condenser and evaporator coils, testing airflow through the air handler and blower, and tracing the problem to its actual source rather than guessing. Refrigerant leaks, compressor issues, blocked airflow, and failing components all get the same thorough attention.
Leave the heating and cooling to us.
When your air conditioner stops cooling or starts blowing warm air, you need someone at the door the same day, not next week. We offer same-day availability for urgent no-cool calls. A service visit covers a full diagnosis, refrigerant check, condenser and evaporator coil inspection, and an airflow test so we know the whole system is working, not just the part that failed.
Ocala winters are mild, but cold snaps do happen and a heating system that quits on a 38-degree night is a real problem. We keep heating repair available for those moments. Whether your heat pump, electric air handler, or gas furnace has stopped responding, we diagnose it and get it running. Heating work here is seasonal and targeted, not a primary sales pitch, but when you need it, we are ready.
Heat pumps handle both heating and cooling from a single unit, which makes them a natural fit for Florida's climate. If yours has stopped heating, stopped cooling, or is making noises it should not be making, we cover the full range of heat pump repairs: refrigerant checks, coil service, reversing-valve diagnosis, and emergency repair when the system goes down.
Leaky ductwork is one of the most common reasons a home feels uncomfortable even when the AC is running hard. Conditioned air escaping into the attic or crawl space drives up energy bills and creates hot and cold spots throughout the house. We inspect, repair, and seal ductwork, and we include a ductwork check as part of a full system tune-up so problems do not go unnoticed.
A thermostat that is not calibrated correctly, or one that is simply outdated, can cost you money every month. We install programmable and smart thermostats that give you better control over your comfort and your energy use. If you are interested in zoning or want to upgrade to a system you can control from your phone, we can walk you through the options.
Florida's humidity and year-round pollen load make indoor air quality a real concern for a lot of households. We install whole-home air filtration systems, UV air purifiers, and air scrubbers that work alongside your existing HVAC equipment to reduce allergens, mold spores, and airborne contaminants. If someone in your home has allergies or respiratory sensitivities, it is worth a conversation.
Marion County runs hot and humid for most of the year. The cooling season stretches well into fall, and the combination of heat and moisture puts real demands on HVAC equipment. Systems here work longer hours than in most parts of the country, which means maintenance matters more and the right equipment choice makes a bigger difference. We've serviced and replaced systems all over these neighborhoods, and we know what holds up in this climate and what does not.
High ambient moisture is a fact of life in Ocala. Even when the AC is running and the temperature feels manageable, excess humidity makes a home feel sticky and uncomfortable. It also creates conditions where mold and mildew can take hold in walls, ductwork, and air handlers. A whole-home dehumidifier integrates directly with your existing HVAC system to pull moisture out of the air continuously, not just when the AC happens to be running. For homes that struggle with humidity despite a properly functioning air conditioner, this is often the missing piece.
Heat pumps are the practical choice for Ocala's long cooling season and mild winters. A single unit handles both heating and cooling efficiently, which keeps operating costs lower than systems that rely on separate equipment for each season. We install standard ducted heat pumps for whole-home replacement as well as mini-split and ductless systems for additions, sunrooms, garages, and any space that does not have existing ductwork. If you are replacing an older system or adding comfort to a new space, a heat pump installation is worth serious consideration here.
Aging central AC systems are one of the most common calls we get. If your system is more than 12 to 15 years old, running on R-22 refrigerant that is no longer manufactured, or driving your electric bill up every summer, replacement is often the smarter financial decision. Modern high-efficiency units carry significantly better SEER ratings than equipment installed even a decade ago, which translates directly to lower monthly costs during a long Florida cooling season. We give you honest recommendations on repair versus replacement, never an upsell, so you can make the decision that actually makes sense for your situation and your budget.
We find it. We fix it. We test the airflow.
The hardest part of an HVAC problem is knowing when to call, but some situations make the answer obvious. No cool during a Florida heat wave, no heat during a cold snap, a system that keeps short cycling, loud banging or grinding from the unit, or an HVAC system that simply will not turn on. Those are emergencies, and they do not get better by waiting.
We dispatch qualified HVAC technicians for urgent calls and keep same-day availability for situations that cannot wait until tomorrow. Prompt response, even for last-minute comfort calls, is part of how we operate. When your system goes down, you should not have to spend the day waiting for a callback.
We're ready to get your heating and cooling running again.
What sets our technicians apart is straightforward: they treat every job, whether it is a single-family home or a commercial building, with the same attention and the same standard of work.
On the residential side, we work with homeowners, landlords, and property managers across Ocala and the surrounding area. Single-family homes, rental properties, multi-unit buildings. If it has a heating and cooling system, we service it.
On the commercial side, we handle offices, retail spaces, and light commercial buildings. We understand that a system failure during business hours is not just uncomfortable, it is a problem that affects your customers and your staff. We keep the scope honest: this is not large industrial work, but for the small and mid-size commercial properties that make up most of Ocala's business community, we are equipped and ready.
All work is performed by qualified HVAC technicians, and every job is done to code. Your system is in good hands with us.
Dealing with a furnace that won't keep up or an AC that can't cool? More often than not, that call could have been avoided with a tune-up earlier in the season. Preventive maintenance is the most cost-effective HVAC service there is, and in a Florida climate where the cooling system runs nearly year-round, it matters more than most homeowners realize.
A seasonal tune-up covers the essentials: filter check and replacement, coil cleaning, refrigerant level check, airflow test, thermostat calibration, and inspection of electrical connections on the unit. The goal is to catch small problems before they turn into emergency calls, and to keep the system running efficiently so your energy bills stay reasonable through a long, demanding cooling season.
Scheduling a tune-up before the peak of summer or before the occasional cold stretch is the straightforward way to avoid the calls nobody wants to make in the middle of a heat wave.
We keep the estimate process simple. A technician diagnoses the problem, explains what needs to be done and why, and gives you a clear number before any work begins. No surprises on the invoice, no pressure to approve work you are not sure about. If repair and replacement are both reasonable options, we tell you the honest difference so you can decide what makes sense. Call (352) 619-9879 to request an estimate on any heating or cooling job.
We are based in Ocala and serve customers throughout Marion County and the surrounding region. That includes Belleview, Silver Springs Shores, Dunnellon, Summerfield, Wildwood, Lady Lake, Inverness, and Crystal River. If you are in the area and need heating or cooling service, there is a good chance we have worked in your neighborhood before.
Yes, we cover Marion County and the surrounding communities. Our regular service area includes Belleview, Silver Springs Shores, Dunnellon, Summerfield, Wildwood, Lady Lake, Inverness, and Crystal River. If you are not sure whether we reach your location, call us at (352) 619-9879 and we will give you a straight answer.
We offer same-day availability for urgent heating and cooling calls, including no-cool situations during Florida's hot months. Prompt response, even for last-minute comfort calls, is part of how we operate. Call (352) 619-9879 early in the day to give us the best chance of getting a technician to you before the afternoon heat peaks.
When you call, we gather the basics about your system and schedule a time that works for you. A qualified HVAC technician arrives, inspects the equipment, and walks you through what they found before any work begins. Once you approve the scope and the cost, we complete the repair or service and test the system before we leave.
We go over the scope and cost with you before any work begins, and we do not start until you have approved it. If something unexpected comes up during the job that changes the scope, we stop and explain it before moving forward. No surprises on the invoice is something we take seriously.
Yes, we serve homeowners, landlords, property managers, and commercial clients across Marion County. Residential HVAC. Commercial HVAC. One number for both. The same qualified technicians handle both sides of the work to the same standard.
Make sure there is clear access to your indoor air handler, furnace or heat pump, and the outdoor unit. If pets are in the home, securing them before the technician arrives helps the job move faster. Beyond that, there is nothing special you need to do.
A straightforward repair or seasonal tune-up usually takes one to two hours. A larger job, such as a full system replacement, takes longer and we will give you a realistic time estimate when we schedule. We do not rush through the work, and we test the system before we consider the job done.
Repeated breakdowns on the same system are usually a sign that the equipment has reached the end of its useful life, or that an underlying problem was never fully diagnosed. We give you honest recommendations on repair versus replacement, never an upsell, so you can decide what actually makes sense financially. If replacement is the right call, we will tell you clearly and explain why.
Service call fees vary depending on the job and the location. When you call to schedule, we will let you know upfront if any travel or dispatch fee applies to your area. We keep the estimate process transparent so there are no surprises before work begins.
Corna Heating and Air has been serving homes and businesses in Ocala and Marion County for more than 25 years. We are locally owned, personally accountable, and built on the kind of straightforward service that keeps customers calling us back. Experienced HVAC technicians. Code-compliant work. Professional service. Call (352) 619-9879 to schedule service or request an estimate. Give us a call and we'll get the comfort back.
From a quick AC repair on a hot Ocala afternoon to a full system replacement you have been putting off, we handle the complete range of heating and cooling work across Marion County. The table below lays out every service we offer, who it fits best, and what you should know going in. Call (352) 619-9879 to talk through your situation and get a quote.
| Service Type | What the Service Includes | Common Needs | Things to Know |
|---|---|---|---|
| Thermostat and Smart-Control Installation |
| homeowners looking for better comfort control and lower monthly energy costs | An outdated or miscalibrated thermostat can cost money every month; a smart upgrade pays for itself quickly during a long Florida cooling season |
| Indoor Air Quality and Air Filtration |
| households with allergy sufferers, respiratory sensitivities, or persistent odor and air quality concerns | Florida's year-round pollen and humidity create real indoor air quality challenges; filtration systems work alongside existing HVAC equipment and do not require a separate unit |
| Ductwork Repair and Sealing |
| homes with uneven temperatures, high energy bills, or visible duct damage | Leaky ducts sending conditioned air into the attic are one of the most common hidden causes of comfort problems and high utility costs in Florida homes |
| Heat Pump Installation |
| homeowners replacing older equipment or adding comfort to a space without existing ductwork | Heat pumps handle both heating and cooling from one unit, which makes them a practical and efficient choice for Florida's long cooling season and mild winters |
| Seasonal Maintenance and Tune-Ups |
| any homeowner who wants to avoid emergency calls and keep energy bills in check | In a climate where the cooling system runs nearly year-round, a tune-up before peak summer is the most cost-effective HVAC service there is |
| High-Efficiency Central AC Replacement |
| homeowners with aging central AC systems driving up summer electric bills | Modern high-efficiency units carry significantly better SEER ratings than equipment installed a decade ago; the savings show up on every monthly bill through a long Florida cooling season |
| Full System Installation and ReplacementMost Popular |
| homeowners replacing aging equipment or upgrading to a more efficient system | Systems more than 12 to 15 years old or running on discontinued R-22 refrigerant are strong replacement candidates; we give honest repair-versus-replace guidance before recommending anything |
| Whole-Home Dehumidification and Humidity Control |
| Ocala homes that feel sticky or uncomfortable even when the AC is running correctly | A dehumidifier pulls moisture out of the air continuously, not just when the AC cycles on; it addresses the humidity problem the AC alone was never designed to solve |
| Heat Pump Repair and Service |
| homes running a heat pump for both heating and cooling | Heat pumps are the most common system type in this climate; a reversing-valve problem can cause it to lose one mode while the other still works |
| Heating and Furnace Repair |
| households that lose heat during an Ocala cold snap | Heating calls here are seasonal but urgent when they happen; we keep availability open for those moments even outside peak season |
| AC Repair and Service |
| homeowners and landlords with an AC that has stopped cooling or is underperforming | Florida's long cooling season puts extra hours on equipment; catching problems early keeps repair costs lower than waiting until the system fails completely |
| Emergency HVAC Service |
| anyone facing a system failure during a Florida heat wave or an unexpected cold stretch | We keep same-day availability for urgent calls; calling early in the day gives us the best chance of getting a technician to you before conditions peak |
How do I know if my AC needs a repair or a full replacement?
Age and repair history are the two clearest indicators. If a system is more than 12 to 15 years old, has needed repeated repairs in the past couple of seasons, or is still running on R-22 refrigerant that is no longer manufactured, replacement is usually the smarter financial decision. We walk through the honest math with you before recommending anything, so you can decide what actually makes sense for your situation.
Why is one room in my home hotter or colder than the rest?
Uneven temperatures usually point to one of a few things: leaky or undersized ductwork, a blower that is not moving enough air, a refrigerant charge that is off, or a zoning issue. In older Florida homes, duct leakage into the attic is one of the most common causes. We inspect the full system to find the actual source rather than guessing at it.
How often should I schedule a maintenance tune-up?
Once a year is the standard recommendation for most systems, but in a climate like Ocala's where the cooling system runs nearly year-round, scheduling a tune-up before peak summer gives you the best protection against emergency calls during the hottest months. If you have a heat pump handling both heating and cooling, keeping it on an annual schedule is especially worthwhile.
Transparent Upfront Pricing
We give you a clear number before any work begins and do not start until you have approved the scope. No surprises on the invoice is something we take seriously on every job.
What does a seasonal tune-up actually include?
A tune-up covers the essentials that keep a system running efficiently and help catch problems early. That means a filter check and replacement, coil cleaning, refrigerant level check, airflow test, thermostat calibration, and an inspection of electrical connections on the unit. The goal is to find small issues before they become expensive failures.
Why does my system keep short-cycling, turning on and off repeatedly?
Short-cycling is usually a sign that something is forcing the system to shut down before completing a full cooling or heating cycle. Common causes include a dirty or clogged filter restricting airflow, a refrigerant charge that is too high or too low, an oversized system that cools the space too fast, or a failing component like a capacitor. It puts extra wear on the equipment and should be diagnosed promptly.
Can you get a technician out the same day?
Yes, we offer same-day availability for urgent heating and cooling calls, including no-cool situations during Florida's hot months. Calling early in the day gives us the best chance of getting a technician to you before conditions peak. Prompt response, even for last-minute comfort calls, is part of how we operate.
Work Performed by Qualified HVAC Technicians
Every repair, installation, and tune-up is handled by qualified HVAC technicians who know this equipment and this climate. All work is done to code.
How does your estimate process work?
A qualified HVAC technician arrives, inspects the equipment, and explains what they found before any work begins. Once we have a clear diagnosis, we give you a firm number and explain the scope. We do not start work until you have approved it. If repair and replacement are both reasonable options, we tell you the honest difference so you can make the call that fits your budget.
Why is my energy bill higher than it used to be even though the system seems to be running?
Rising energy costs with a system that appears to be functioning are often a sign of reduced efficiency. Dirty coils, a low refrigerant charge, leaky ductwork, or a system that is simply aging past its efficient years can all cause it to run longer and work harder to reach the same temperatures. A tune-up or diagnostic visit usually identifies the cause quickly.
Same-Day and Emergency Availability
When your system goes down during a Florida heat wave or an unexpected cold snap, we dispatch for urgent calls and keep same-day availability for situations that cannot wait.
What causes strange noises from my HVAC unit?
Banging or clanking usually points to a loose or broken component inside the air handler or blower. Grinding can indicate a failing motor bearing. Hissing sometimes means a refrigerant leak. Clicking at startup and shutdown is normal, but clicking that continues while the system runs often points to a relay or control issue. Any noise that is new or getting louder is worth having diagnosed before it turns into a larger failure.
Do I need to be home when the technician comes?
Someone over 18 should be present for the appointment. The technician needs access to the indoor air handler, the outdoor unit, and ideally the thermostat. If pets are in the home, securing them before the technician arrives helps the job move faster. Beyond that, there is nothing special you need to prepare.
Is a whole-home dehumidifier worth it if my AC is already working correctly?
In Ocala's climate, yes, for many households. An air conditioner removes some moisture as a byproduct of cooling, but it only runs when it is actively cooling the space. A whole-home dehumidifier pulls moisture out of the air continuously and can be set to a target humidity level independent of the thermostat. If your home feels sticky even when the temperature is comfortable, or if you have had mold or mildew issues in the past, a dehumidifier addresses the problem the AC was never designed to solve on its own.
Every home and every system is a little different. Call (352) 619-9879 and we will give you a straight answer on what your heating or cooling situation actually needs.
(352) 619-9879