24/7 Emergency AC & HVAC Repair in Dallas, TX | Same‑Day Service

AC out in a Dallas heat wave or heat down in a cold snap? Lone Star HVAC provides 24/7 emergency AC and heating repair across Dallas-Fort Worth. Get same-day dispatch, upfront pricing, and licensed NATE- and EPA 608-certified technicians who fix most issues in one visit. Call (469)-625-2116 now for immediate help.

Emergency AC Repair in Dallas: What Qualifies as Urgent?

Not every HVAC problem requires emergency service. However, when your comfort, safety, or property is at risk, immediate help is essential. In Dallas's extreme temperatures, a broken air conditioning system in July or heating repair needs in January qualify as true emergencies.

An emergency exists when your HVAC system completely fails, creates safety hazards, or shows danger signs that could lead to bigger problems. Our 24/7 response team helps you determine if you need immediate service or if the issue can wait until normal business hours.

🚨 EMERGENCY? CALL NOW: (469)-625-2116

Same-day service • Upfront pricing • All brands serviced • TDLR License #TACLB12345E

Signs You Need 24/7 HVAC Service (No Cooling, Burning Smell, Leaks)

No Cooling or No Heat

Complete system failure when you need it most requires immediate attention, especially during extreme weather.

Burning/Electrical Smells — Turn Off at Breaker

These indicate potential fire hazards. Turn off your system at the breaker shutoff and call immediately.

No/Weak Airflow (Blower/Ductwork Issues)

This could signal blower motor failure or serious ductwork blockages affecting your entire system.

Strange Noises (Compressor/Blower/Capacitor)

Unusual sounds often mean component failure that could cause complete system breakdown.

Water/Refrigerant Leaks (EPA 608 Required)

Leaks can damage your home and indicate serious system problems requiring EPA Section 608 certification to repair.

Frequent Breaker Trips/Short-Cycling (System Overload)

Electrical issues pose fire risks and need immediate professional diagnosis and troubleshooting. If your breaker trips, wait 30 minutes before resetting once; repeated trips indicate overload—leave it off and call us.

CO Alarm or Gas Smell — Evacuate

Evacuate immediately and call 911. For gas leaks, also call Atmos Energy emergency: 866-322-8667. This is a life-threatening emergency requiring immediate heat exchanger inspection.

Immediate Safety Steps Before We Arrive

If you smell gas or a CO alarm sounds: Evacuate and call 911/Atmos Energy (866-322-8667)
If you see sparks or burning smells: Turn off the HVAC breaker immediately
For water leaks: Power off the system and protect nearby belongings
For frozen AC: Set thermostat to FAN only to thaw coils
Verify thermostat: Check it's on COOL/HEAT with correct setpoint and new batteries
Clear debris: Remove obstructions from around the outdoor condenser for airflow

Common Emergency Repairs We Handle (AC, Furnace, Heat Pump)

Compressor, TXV, Low Refrigerant (R410A/R32)

Our technicians handle all R410A/R32 refrigerant systems and TXV/expansion valve problems. Repairing refrigerant charge and airflow issues restores efficiency and can lower bills; SEER2 systems especially benefit when setup is corrected.

Capacitor, Contactor, Ignition Control Board

These common failures need immediate replacement to restore operation.

Flame Sensor, Inducer Motor, Limit Switch, Thermocouple

Critical furnace components we repair or replace same-day.

We clear blockages, restore proper airflow, and fix drainage issues throughout your home.

Condensate Drain/Pump, Air Handler, Ductwork

Call now for immediate dispatch: (469)-625-2116

Need Emergency Service? We're Ready 24/7!

Our 24/7 Response Process: From Call to Repair

Immediate phone triage and safety guidance

Our dispatchers help assess your emergency and provide safety instructions.

Fast dispatch with an estimated arrival window

We provide realistic arrival times for same-day service, typically 2-4 hours.

On-site diagnosis and troubleshooting

Our licensed technician performs comprehensive testing.

Upfront cost estimate before work begins

You'll know exact costs before we start any repairs.

Same-visit repairs when possible

Our stocked trucks allow most repairs to be completed immediately. If parts are backordered, we can provide temporary portable AC/heaters for critical spaces.

Post-repair testing and system verification

We ensure everything works perfectly before leaving.

Real-time ETA updates when available

Stay informed about your technician's arrival.

Pricing & After‑Hours Fees (Diagnostic, Parts, Financing)

Typical Emergency Repair Costs:

Capacitor/contactor: $200-$400
Blower motor: $450-$900
Refrigerant leak find/repair: $350-$1,200 + refrigerant
After‑hours diagnostic: $99-$199 (often credited with repair)

a woman in a blue cardigan pointing to the side

We accept ACH and contactless payments; promotional 0% options may be available on approved credit for larger repairs. We can dispatch under your home warranty, work with claim numbers, and provide diagnosis reports the same day.

Certified Technicians (NATE, TDLR, EPA 608) & Code Compliance

Licensed and insured technicians

Every technician carries proper TDLR license #TACLB12345E and insurance.

EPA Section 608 certification for refrigerants

Legal handling of all refrigerant types. Learn more about EPA certification.

NATE-certified technicians

NATE certification ensures expert knowledge and quality service.

Compliance with Dallas local codes and permitting

All work meets city requirements and building codes.

Background-checked team with CO and gas safety training

Trusted professionals in your home.

Residential & Commercial — Homes, RTUs, Server Rooms

Single-family homes, condos, and rentals

Fast residential service throughout Dallas.

architectural photography of black and brown hallway

Commercial properties

24/7 support for restaurants, retail, warehouses, and RTUs; priority response for server rooms/data centers.

Brands & High‑Efficiency Systems (SEER2)

All major HVAC brands and models

We service Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, American Standard, Ruud, and all other major manufacturers.

High-efficiency and SEER2-rated systems

Expert service on modern high-efficiency units to maintain optimal performance and energy savings.

R410A and R32 refrigerant systems

Certified handling of all refrigerant types with proper EPA protocols.

Coverage Areas Include:

Uptown, Oak Lawn, Lakewood, Preston Hollow
North/East Dallas, Oak Cliff, Bishop Arts
Deep Ellum, Downtown/Design District
Highland Park, University Park
Addison, Farmers Branch, Plano, Frisco, McKinney
Richardson, Garland, Carrollton
Irving, Coppell, Lewisville, Grapevine
Arlington, Grand Prairie, Mesquite

Service Area — Dallas & DFW Metroplex

Preventive Tips to Avoid Emergencies

Regular filter replacement

Change filters monthly during peak seasons.

Clear vents and outdoor units

Keep airflow paths unobstructed.

Thermostat calibration and settings

Proper settings prevent system strain.

Seasonal maintenance and tune-ups

Annual service prevents most emergencies. See Department of Energy recommendations.

Join a maintenance plan for priority service

Members receive priority emergency dispatch.

Why Choose Lone Star HVAC in Dallas

Why Dallas homeowners trust us:

24/7 live dispatch; average arrival 2-4 hours
NATE, EPA 608, and TDLR‑licensed techs
Fully stocked trucks — most repairs done same visit
Upfront, written pricing; no surprises
12‑month labor warranty on repairs

Unlike some companies, we provide upfront pricing before starting work. There are no surprise charges. Our NATE certification and EPA Section 608 certification mean we handle repairs correctly the first time. We work with your home warranty when possible and offer financing for unexpected repairs.

⚡ Don't Wait - Call Now for 24/7 Emergency Service!

Fast response • Licensed technicians • All brands serviced (469)-625-2116

Frequently asked questions

What qualifies as an HVAC emergency in Dallas?

Complete system failure, safety hazards like gas leaks or electrical burning smells, and no cooling during extreme heat all qualify as emergencies requiring immediate service.

How quickly can a technician arrive for emergency service?

We typically arrive within 2-4 hours for emergency calls, often faster. We provide accurate arrival windows when you call.

What is the average cost for emergency HVAC repair?

Costs vary based on the problem. Simple repairs like capacitor replacement might cost $200-400, while compressor issues can be $1,500+. We provide exact quotes before starting work.

Is there an extra fee for after-hours or weekend service?

Yes, after-hours diagnostic typically runs $99-$199, which is often applied/credited with approved repair.

What brands and systems do you service?

We service all major brands including Carrier, Trane, Lennox, Rheem, Goodman, York, Daikin, American Standard, Ruud, and more. Our technicians handle all types of systems.

Are your technicians licensed, insured, and background checked?

Yes, all technicians hold TDLR licenses, carry insurance, pass background checks, and maintain EPA certification.

What risks are there if I delay an emergency HVAC repair?

Delays can lead to complete system failure, higher repair costs, safety hazards, and health risks during extreme temperatures.

How long does an emergency HVAC repair usually take?

Most emergency repairs take 1-3 hours. Complex issues may require ordering parts for a follow-up visit.

Can you fix my system in one visit?

Our stocked trucks allow us to complete most repairs immediately. Uncommon parts may need to be ordered.

Do you offer financing for emergency HVAC repairs?

Yes, we offer financing options for qualified customers to help manage unexpected repair costs.

Can you work with my home warranty or insurance claim?

Yes, we work with most home warranty companies and can help with insurance claims when applicable. We can dispatch under your home warranty, work with claim numbers, and provide diagnosis reports the same day.

What should I do before the technician arrives?

Ensure safe access to your system, clear the area around units, and gather any warranty or service documentation you have.

Can you recharge my system with R410A/R32 today, and do you require a leak check first?

Yes, we can recharge systems same-day. EPA regulations require us to check for and repair leaks before adding refrigerant to ensure system efficiency and environmental compliance.

Do you offer temporary portable AC or heaters if parts are unavailable after hours?

Yes, if parts are backordered, we can provide temporary portable AC/heaters for critical spaces to maintain comfort until permanent repairs are completed.

Do you service commercial rooftop RTUs after hours, and can you meet building/landlord requirements?

Yes, we provide 24/7 support for commercial RTUs and work with property managers to meet all building requirements and documentation needs.

Ready to Schedule Emergency Service?

Don't suffer through another minute without heating or cooling. Our expert technicians are standing by 24/7 to restore your comfort and safety.

✓ Licensed & insured ✓ Upfront pricing ✓ All brands serviced ✓ 12-month labor warranty

📞 Call Now: (469)-625-2116