Estimated Read Time: 12 minutes
AC not blowing cold air? In Central Florida heat, that is more than a nuisance. Before you sweat it out, use this step-by-step guide to pinpoint simple fixes you can safely try and learn when to call a pro. We will show the most common causes, quick checks you can do in minutes, and what our technicians do next if the problem needs professional repair. Upfront pricing and same-day service are available.
First, confirm the basics in 5 minutes
Start with simple items that cause most no-cool calls. You can do these without tools.
- Thermostat settings
- Set to Cool, Fan Auto, and target 72–76°F to test.
- Replace batteries if the screen is dim or unresponsive.
- Air filter
- Slide it out and hold it to the light. If you cannot see light through it, replace it.
- Use correct size and arrow direction toward the blower.
- Breakers and safety switches
- Check the indoor air handler breaker and the outdoor condenser breaker.
- Reset once only. Frequent trips point to a deeper electrical issue.
- Supply and return vents
- Open all supply vents. Clear furniture and drapes.
- Make sure the large return grille is not blocked.
- Wait-and-test
- After changes, wait 15 minutes. Measure supply air at a vent. You should feel a clear temperature drop versus room air.
"Technicians arrived on time, were professional and knowledgeable. They fixed my system and it didn’t cost me a fortune. I feel they were trustworthy..."
If the AC runs but air is warm
Warm air often means restricted airflow or a refrigerant or outdoor unit problem.
- Check for ice on the indoor coil or the outside line.
- If iced, turn system Off and Fan On for 4–6 hours to thaw, then replace the filter and restart. Ice returns if the root cause remains.
- Inspect the outdoor unit
- Make sure the fan is spinning. Clear leaves and grass from the coil fins.
- If the fan hums or starts then stops, you may have a faulty capacitor.
- Look for a clogged drain
- A full condensate pan can trip a float switch and stop cooling.
- Consider refrigerant issues
- Low charge from a leak reduces cooling and can cause coil icing.
What our technicians check next
- Temperature differences across supply and return vents.
- Electrical components and controls including capacitors and contactors.
- Airflow at the blower and across the evaporator coil.
- System conditions that point to leaks or restrictions.
"He ran a diagnostic, figured out the problem and did the repair, all in a timely manner... Final cost was as promised. No surprises."
Common causes of no cooling in Central Florida
High heat, humidity, and storms create predictable issues we see every week.
- Clogged air filters block airflow and can ice the coil.
- Dirty evaporator coils reduce heat transfer and cooling capacity.
- Refrigerant leaks reduce pressure, leading to warm air or icing.
- Faulty capacitors prevent the compressor or fan from starting.
- Thermostat errors or failed sensors cause short cycling or warm air.
- Condensate drain clogs from algae growth trip safety switches.
These items match what our team diagnoses most: refrigerant leaks, clogged air filters, faulty capacitors, broken compressors, faulty thermostats, dirty evaporator coils, and condensate drain clogs.
Local insight
- Afternoon thunderstorms can momentarily sag voltage and trip breakers.
- Algae in condensate drains is common in Orlando’s humidity. A float switch will shut off cooling to protect your ceiling.
"Totally fast repair after hours – Jose was efficient and described each step of the repair and what to look for between scheduled service calls."
Safe DIY steps to try before you call
Do these simple, safe tasks. If cooling does not return within 30–60 minutes, schedule service.
- Replace the filter with the correct size and MERV rating your system can handle.
- Clean the return grille and supply vents with a vacuum.
- Rinse the outdoor condenser coil with a garden hose from inside out if accessible and power is off. Do not use a pressure washer.
- Empty the condensate pan if full and clear the drain line with a wet/dry vacuum at the outside drain port.
- Reboot the thermostat. Power down for 60 seconds, then restart and reselect Cool.
Stop and call if you notice any of the following
- Burning smell, repeated breaker trips, or visible arcing.
- Ice forming on lines or the indoor unit after thaw and filter change.
- Outdoor fan not spinning while the compressor hums loudly.
- Water staining at ceilings near the air handler.
"Mara showed up on time, did several tests to confirm whether it was truly a leak... She spent time testing the system, was very courteous and professional."
What a professional diagnosis includes
When simple steps do not restore cooling, a licensed tech should test the full system. Our diagnostic process may include checking temperature differences across supply and return vents, inspecting electrical components, evaluating airflow, and reviewing other system conditions. That is how we distinguish a failing capacitor from a compressor issue or a thermostat problem from a refrigerant leak.
Expect the technician to
- Take readings at the evaporator coil and condenser.
- Verify blower motor performance and amp draw.
- Inspect capacitors, contactors, relays, and wiring.
- Test float switches and confirm condensate flow.
- Check for refrigerant leaks and evaluate charge.
We service all air-conditioning brands and models, and many repairs can be completed during the same visit when the part is in the truck.
"Victor... took the time, cared and had the knowledge to thoroughly check and repair the unit. He explained each procedure and ensured the unit operated correctly prior to leaving."
Likely repairs and what they mean
Understanding the fix helps you decide on repair versus replacement.
- Capacitor replacement
- Symptom: outdoor fan or compressor will not start or starts then stops.
- Typical outcome: fast, cost-effective repair that restores cooling.
- Thermostat replacement or rewire
- Symptom: system does not call for cooling or short cycles.
- Outcome: improved control and reliable operation.
- Refrigerant leak locate and repair
- Symptom: warm air, ice on lines, hissing at coil.
- Outcome: fix leak, verify charge, test temperatures.
- Evaporator or condenser coil cleaning
- Symptom: weak airflow, long run times.
- Outcome: improved efficiency and cooler supply temps.
- Drain line service and float switch reset
- Symptom: system runs briefly then shuts off, water in pan.
- Outcome: prevents water damage and restores cooling.
- Compressor or TXV repair
- Symptom: no cooling with correct airflow and power.
- Outcome: larger decision. We provide repair-versus-replace guidance.
"Our AC stopped working... Turns out that we need a whole new system. Repairs would only be a bandage. Honest, friendly, efficient... Our new system will be installed tomorrow."
Repair vs. replace: how we guide the decision
We provide upfront pricing before repair work begins so you can review the diagnosed problem and available options. Here is how we frame it for homeowners.
Consider repair if
- The system is under 10 years old and has no history of major failures.
- The fix is minor, such as a capacitor or drain line cleaning.
- The coil is cleanable and refrigerant leak is small and accessible.
Consider replacement if
- The compressor is failing or the system uses an obsolete refrigerant.
- Multiple components are near end of life and energy bills are climbing.
- The quoted repair exceeds 30–40 percent of a new, efficient system.
Because we also provide plumbing and electrical services, related concerns can be evaluated during the same visit when appropriate.
"Mara was the best tech we’ve ever worked with... She made it her mission to ensure that we weren’t left without a working AC, even if it was a temporary fix."
Prevent the next no-cool call with maintenance
Catching small issues early protects comfort and your wallet. We offer maintenance plans with scheduled service, discounted repairs, no overtime fees, and priority scheduling. Our maintenance agreement includes two scheduled air-conditioning maintenance visits per year, along with an on-demand plumbing and electrical visit.
A typical maintenance visit inspects
- Thermostat
- Evaporator coil
- Drain pan and drain line
- Blower motor and blower wheel
- Filter safety and airflow
- Accumulator and refrigerant levels
Preventive service goals
- Improve efficiency and cooling output.
- Extend equipment life and reduce mid-season breakdowns.
- Catch leaks, weak capacitors, or dirty coils before they fail in July.
"JP came out... to perform the yearly maintenance... Very thorough and explained everything honestly. I would highly recommend JP."
When to call for same-day help in West Orlando
Call as soon as you see these signs. Delaying can raise costs.
- Breaker trips again after a single reset.
- Ice returns after thawing and a new filter.
- Water dripping from the air handler or ceiling.
- The outdoor unit is silent while the indoor blower runs.
- Thermostat errors persist after reboot.
We offer same-day or next-day appointments whenever possible and 24/7 emergency service. Technicians arrive in stocked vehicles so many repairs are completed on the first visit. We cover Orlando, Winter Garden, Ocoee, Clermont, Leesburg, The Villages, Ocala, Tavares, Groveland, and nearby communities.
"Del Air showed up on the same day I called... explained their findings... Final cost was as promised. No surprises. I’d recommend Del Air for all HVAC repair."
Frequently Asked Questions
Why is my AC running but not blowing cold air?
Most often it is a clogged filter, dirty coil, low refrigerant from a leak, or a faulty capacitor. Try a new filter, clear the drain, and rinse the outdoor coil. If air stays warm, schedule a diagnostic.
Can a dirty air filter really stop cooling?
Yes. A clogged filter restricts airflow, can ice the coil, and forces longer run times. Replace it and thaw any ice. If cooling does not return within an hour, call for service.
Is it safe to hose off my outdoor AC unit?
Yes, if power is off. Gently rinse from inside out to remove debris. Do not use a pressure washer or bend the fins. Restore power after the coil dries.
How do I know if I have a refrigerant leak?
Signs include warm air, icing on lines, and long cycles. Only a licensed tech can confirm with gauges and leak detection. Running with a leak can damage the compressor.
How often should I service my AC in Florida?
Twice per year works best here due to heavy usage. Maintenance helps catch issues early, improves efficiency, and reduces mid-season breakdown risk.
The bottom line
If your AC is not blowing cold air, start with thermostat, filter, breakers, vents, and a quick outdoor rinse. If air stays warm, you likely have a coil, drain, refrigerant, or electrical issue that needs a pro. For fast, honest HVAC repair in West Orlando and surrounding cities, we are ready to help today.
Ready for same-day AC repair?
Call Del-Air Heating, Air Conditioning, Plumbing and Electrical at (407) 768-4779 or schedule at https://www.delair.com/west-orlando/.
- Upfront pricing before work begins.
- 24/7 emergency support.
- Service across Orlando, Winter Garden, Ocoee, Clermont, Leesburg, The Villages, Ocala, Tavares, Groveland, and nearby.
Prefer to chat first? Visit our website to start a live chat now. Ask about current specials and military, veteran, and senior discounts.
About Del-Air Heating, Air Conditioning, Plumbing and Electrical
Since 1983, Del-Air has served Florida homeowners with HVAC, plumbing, and electrical expertise. We offer same-day service, 24/7 emergency support, and upfront pricing. Our licensed team is trained across systems, so related issues get flagged in one visit. Licenses: EC13013085, CAC1822274, CAC051477, CFC057524. We service all AC brands and models, arrive in stocked vehicles, and help you choose repair versus replacement with clear guidance. Local, trusted, and ready when you need us.