Black horizontal rounded line on a white background

Emergency HVAC Repair

Nashville averages 49 days at or above 90 degrees and roughly 66 nights below freezing, and equipment almost always fails at one of those extremes rather than somewhere in between. Professional Heating and Cooling answers emergency heating and cooling calls 24/7, weekends and holidays included, across Nashville, TN, plus nearby Antioch, Madison, Hermitage, Old Hickory, Goodlettsville and Mount Juliet, Tennessee.

Technician in gray shirt and jeans repairs an open outdoor HVAC unit on a rooftop.
Technician repairing an outdoor air conditioner unit with tools beside a house wall

SOME PROBLEMS SHOULD NOT WAIT UNTIL MORNING.

Not every breakdown is a genuine emergency, and we will tell you honestly when something can safely wait until morning. But burning smells, carbon monoxide alarms, electrical faults and dangerous indoor temperatures are never on that list, and neither is a household with infants, elderly residents or medical equipment that depends on power.


We triage over the phone first, so you know exactly what to shut off and what to expect while a technician is on the way. Nobody sits waiting in the dark wondering whether the situation is getting worse.

  • Live coverage 24/7, weekends included
  • Safety guidance before we arrive
  • Common failure parts stocked on every truck
  • After-hours estimates still free
Black horizontal line on a white background

EMERGENCY HVAC REPAIR

WE ANSWER AT 2 A.M. BECAUSE SYSTEMS FAIL THEN.

Equipment does not break during business hours as a courtesy. Compressors seize during the hottest part of the afternoon, furnaces lock out during the coldest part of the night, and drain pans overflow while everyone is asleep. Being reachable at those hours is most of what emergency service actually means. The rest is arriving with enough parts and enough diagnostic capability to finish the job rather than schedule a second visit.

BOTH EXTREMES TURN DANGEROUS IN MIDDLE TENNESSEE.

Summer heat here carries humidity that makes indoor temperatures genuinely unsafe for older residents and small children within a few hours of a cooling failure. Winter delivers the opposite risk, with pipes and people both exposed once indoor temperatures start falling toward freezing. Neither situation improves on its own overnight, and both get considerably worse if the equipment keeps running through the fault that caused them.

NIGHT CALLS TAUGHT US WHAT TO CARRY.

Capacitors, contactors, flame sensors, igniters, float switches, transformers and fuses live on our trucks because those are the components that strand people. Stocking them is not sophisticated. It is simply the result of 10 years of paying attention to what our licensed, bonded, insured and EPA certified technicians actually replace at midnight. Most emergency calls end the same night for exactly that reason. What is yours doing right now?

WHAT AN AFTER-HOURS RESPONSE SAVES YOU

Black-and-white icon of a projector with a film reel and display screen above it.
A SAFE HOUSEHOLD

Extreme indoor temperatures create real medical risk for infants, older adults and anyone with a health condition. Restoring conditioning quickly is a safety outcome first and a comfort outcome second.

Black icon of a computer with a gauge and film reel on top
CONTAINED EQUIPMENT DAMAGE

Running a system through a fault turns repairable problems into replacements very quickly. Shutting it down correctly and getting a diagnosis the same night is what keeps a failed capacitor from becoming a failed compressor.

Black projector icon projecting a chart and film reel onto a screen
PREVENTED WATER DAMAGE

An overflowing drain pan in an attic finds drywall fast. Responding the same night to a condensate failure usually means a service call instead of a ceiling repair and an insurance claim.

Black icon of a film projector with a film reel and a gauge above it on a white background
FEWER LOST BUSINESS HOURS

For a restaurant, salon or shop, a failed rooftop unit closes the doors and the revenue stops. Overnight and weekend repair means opening on schedule instead of turning customers away and rescheduling staff.

Black icon of a film projector with a reel and a light bulb above it
A CLEAR HEAD IN A BAD MOMENT

Talking to someone who explains what to shut off and what to expect removes most of the panic from a breakdown. You get a plan on the phone before anyone reaches the driveway.

Black icon of a computer with a gauge, gear, and settings panel above it
AN HONEST ASSESSMENT AFTERWARD

Emergency repairs stabilize the situation first. Once things are running again, we tell you plainly whether the equipment is worth further investment, without using a stressful moment to push you toward a replacement decision.

Short black horizontal line on a white background

WHAT WE RESPOND TO

OUR EMERGENCY HVAC WORK

Urgent calls fall into a predictable set of categories, most of them involving heat, cold, water or electricity. These are the situations we handle around the clock across the Nashville area.

Rooftop HVAC unit with large metal fan, on a building roof under daylight.

NO COOLING

Complete Cooling Failure


Cooling that quits during a heat advisory gets treated as urgent. We diagnose refrigerant, electrical and airflow faults on arrival and restore operation the same visit whenever the failed component is one we carry on the truck.

Old basement utility room with exposed wiring, machinery, and a bright light on the right

NO HEAT

Complete Heating Failure


Furnace lockouts, failed igniters and dead blower motors leave houses cold fast when overnight temperatures drop. We diagnose the fault, confirm the system is safe to operate, and restore heat before we leave whenever parts allow.

Burnt electrical component with charred wiring and melted plastic inside a machine panel

ELECTRICAL

Breaker Trips and Burning Odors


Repeated tripping and burning smells signal a fault that will get worse. We isolate the circuit, test compressor and motor windings, inspect contactors and wiring for heat damage, and repair rather than reset.

HVAC unit with white PVC pipes and condensate pump on a concrete floor in a basement-like room

WATER

Overflowing Drains and Leaking Units


Blocked condensate lines flood pans, ceilings and closets fast. We stop the water, clear the blockage, verify float switch operation and correct the drainage path so the same failure does not repeat next week.

Open HVAC unit with exposed coils, wiring, and a multimeter attached outdoors

FROZEN COILS

Iced Systems and Refrigerant Faults


A frozen evaporator has to thaw before anything can be tested, so we start that immediately, then find the airflow restriction or refrigerant loss behind it rather than simply restarting the equipment and hoping.

Wall-mounted carbon monoxide detector with red digital display beside furnace and pipes in a utility room

SAFETY

Gas and Carbon Monoxide Concerns


If you suspect a gas leak, call the fire department and your gas utility first. Once the property is safe, we test combustion, inspect the heat exchanger and venting, and confirm the equipment can run again.

Thin black horizontal line on a white background

THE WORD ON OUR WORK

WHAT OUR CLIENTS SAY.

The most common comment on emergency calls is simply that a person answered. The second is that the after-hours price matched what we said on the phone rather than climbing once the work was finished.

Black horizontal rounded line on a white background

Common Questions

FREQUENTLY ASKED QUESTIONS.

Emergency calls generate the same questions every time, usually asked while something is beeping or dripping. These answers are what we would tell you on the phone.

  • What HVAC problems should be treated as emergencies?

    Burning odors, smoke, sparking, repeated breaker trips, a major leak near electrical components or complete loss of heating or cooling during dangerous temperatures. Turn the equipment off if it is safe, and contact emergency services for any gas hazard.

  • What should I do while waiting for a technician?

    Shut the system off at the thermostat and breaker if anything smells or sounds wrong. Open interior doors, run ceiling fans, close blinds against sun, and move anyone vulnerable to the most comfortable room available.

  • Why did my air conditioner start blowing warm air after a power outage?

    Outages and surges commonly damage capacitors, contactors and control boards, and some systems need a compressor delay period before restarting. If warm air persists beyond 30 minutes, an electrical component likely failed during the event.

  • Is it safe to run a system that smells like burning plastic?

    No. Shut it off at the breaker immediately. A plastic or electrical burning odor indicates overheating wiring, a failing motor or a scorched control board, all of which can progress to fire if the equipment keeps running.

  • What should I do if the carbon monoxide alarm sounds?

    Get everyone outside into fresh air, then call the fire department from outside the building. Do not restart the furnace. Once responders clear the property, combustion testing and a heat exchanger inspection determine what happened.

  • Can a frozen coil be repaired the same night?

    Sometimes. The ice has to thaw first, which can take several hours with the fan running. If the underlying cause is a dirty filter or blower problem, we finish that night; a refrigerant leak may take longer.

  • Do you carry common parts on the truck?

    Yes. Capacitors, contactors, transformers, fuses, igniters, flame sensors, float switches and relays are stocked, which covers the large majority of after-hours failures. Compressors, coils and blower motors typically require ordering.

  • How do I shut my system down safely?

    Set the thermostat to Off, then switch off the breaker labeled for the air handler or furnace and the one for the outdoor unit. For gas equipment, the shut-off valve at the appliance closes with a quarter turn.

Thin black horizontal line on a white background

HOW WE WORK

FROM YOUR CALL TO A STABLE SYSTEM, HERE IS HOW.

STEP 01

WE ANSWER

A real person takes the call and asks what the system is doing, what you smell or hear, and who is in the house. That conversation determines how urgently we dispatch and what the technician brings.

STEP 02

WE TRIAGE

If anything sounds unsafe, we walk you through shutting it down before we hang up. You also get a realistic arrival window rather than an optimistic one that leaves you watching the driveway.

STEP 03

WE SECURE THE SITE

On arrival the technician confirms the equipment is safe to work on and safe to operate. Gas, electrical and water hazards get addressed before any diagnostic work begins, no matter what time it is.

STEP 04

WE DIAGNOSE

Instruments come out immediately: meter, gauges, clamp and analyzer as the situation requires. Emergency work still gets a real diagnosis, because guessing at midnight is how people end up paying twice.

STEP 05

WE STABILIZE

Whenever the failed part is on the truck, we complete the repair and restore operation that night. When it is not, we make the system safe, explain the timeline honestly and get the part moving.

STEP 06

WE FOLLOW UP

Once the emergency has passed, you get a clear picture of what failed, why, and what it suggests about the equipment's remaining life. That conversation happens calmly, in daylight, with no pressure attached.

Horizontal black line on a white background

Get Your Free Estimate

CALL ANY HOUR, THE ESTIMATE IS STILL FREE.

Emergencies do not keep office hours, and neither do we. Professional Heating and Cooling covers Nashville, TN around the clock, with real diagnostics and honest pricing at 3 a.m. just as at 3 p.m. Reach our contact page or request a call back.

WHAT YOUR EMERGENCY VISIT COVERS:
  • Safety assessment before anything else
  • Full diagnostic with instrument readings
  • Repair completed when parts are stocked
  • A safe shutdown plan when they are not
  • Pricing confirmed before work begins
  • An honest read on remaining equipment life