An AC leaking water in Las Vegas is a time-critical emergency. Every day you see an air conditioner leaking water in July, you’re watching AC water damage work through your ceiling. The fix is usually a $15 filter swap or a $150 drain pan repair. But sometimes it’s the first sign of a dying system.
Do this before you read anything else:
Turn off the system at the thermostat and the breaker.
Check the drain pan under the evaporator coil. Standing water? Remove it immediately.
Look at the supply vents. Ice or frost? That’s a frozen coil. Do not restart the unit.
Is the water still running? Every extra hour pushes more condensate through a broken path.
[CMS EDITOR – RE-EMBED: Quick-reference table with 4 rows and 3 columns listing Problem, Typical Fix, and Estimated Cost. Keep existing table styling with bordered rows and alternating colors. Text snippet: “Clogged condensate drain line | Professional flush and enzyme treatment | $75 – $200”]
| Problem | Typical Fix | Estimated Cost |
|---|---|---|
| Clogged condensate drain line | Professional flush and enzyme treatment | $75 – $200 |
| A dirty air filter is causing a frozen coil | Replace air filter, inspect coil | $15 – $50 |
| Rusted drain pan | Replace the drain pan | $150 – $400 |
| Aging AC system with refrigerant leak | Replace the air conditioning unit | $4,000 – $9,000 |
Stop the Leak: Immediate Steps
Turn off your system at the thermostat and the breaker right now. If your AC shut itself off before you found the leak, an unexpected shutdown in Las Vegas is its own issue to diagnose before you restart.
Check the drain pan under your evaporator coil. Overflowing? Get that water out before it reaches the drywall. Las Vegas attics hit 130°F in July. Moisture in framing doesn’t dry out alone. Mold starts within 24 hours and spreads through the ductwork fast. Every hour you wait does more harm and risks further damage to your ceiling.
Three Causes of AC Water Damage in Las Vegas
1. A Clogged Condensate Drain Line
Algae and Mojave desert silt are the two most common culprits behind an AC condensate line clogged with debris. After a haboob, silt gets pulled through your return air, drops into the drain pan, and mixes into sludge inside the polyvinyl chloride (PVC) condensate line. Clark County water adds over 280 parts per million of calcium and magnesium, depositing limescale (hard mineral buildup) every cycle until nothing drains properly.
Vinegar won’t clear a calcified Las Vegas drain line. Proper clearing takes mechanical descaling, high-pressure flush, and enzyme treatment to prevent more condensation from rebuilding the blockage. Our NATE-certified technicians run this process on nearly every Vegas AC maintenance call between June and August. See what our maintenance visit covers before summer hits.
A float switch cuts power automatically when the drain pan fills, before water reaches your ceiling. Our tech Victor has cleared the Las Vegas drain lines packed so densely with mineral scale that the float switch had tripped twice in one week without the homeowner noticing.
[Placeholder: Photo of a Bob’s Repair technician holding a removed PVC condensate drain line segment from a Summerlin attic air handler, showing thick white mineral buildup and calcified sludge blocking the pipe interior] Alt Text: Calcified PVC condensate drain line removed from a Las Vegas home air handler by Bob’s Repair technician, showing mineral buildup from Clark County hard water
[Placeholder: Customer Review] ⭐⭐⭐⭐⭐ Ricardo Villarosa “Victor the technician was very polite and courteous! He does an Amazing job and listened to all of our concerns. Thanks” Source: Read Google Review (Note: Link formatted explicitly as a separate source line to avoid CMS spam/phishing filters.)
Our $89 tune-up special (code TUNEUP89) covers a full drain line inspection, filter replacement, coil cleaning, and float switch test. Book by April. By May, we’re in emergency dispatch. If you’re a Las Vegas snowbird returning to the valley after winter, starting your system up correctly after months of downtime should happen before your first hot week, not after.
2. A Frozen Air Conditioning Coil and Low Refrigerant Levels
Your evaporator coil (inside the indoor unit) freezes when airflow is blocked or refrigerant drops below 32°F.
When outdoor temps hit 115°F, your air conditioning unit runs 16 to 20 hours a day. UNLV research confirms the Las Vegas Valley’s urban heat island effect keeps neighborhoods measurably hotter than the surrounding Mojave Desert, adding extra thermal load on systems already running at their limits. The dry Mojave air also accelerates wear on rubber seals, so refrigerant leaks develop faster here. A dirty filter restricts airflow enough to freeze the coil on an otherwise healthy system. Low refrigerant levels cause excessive condensation to freeze on the coil surface, whether the leak originates in the indoor unit or around the outdoor unit.
A frozen AC coil melting in a 130°F Las Vegas attic can release several gallons. When the ice melts, the pan overflows in minutes.
[Placeholder: Close-up photo of a fully frozen evaporator coil inside a Las Vegas residential air handler, with thick ice covering the copper tubing and aluminum fins, set against the context of an attic installation] Alt Text: Frozen evaporator coil on a Las Vegas air conditioning unit caused by low refrigerant levels, by Bob’s Repair
3. A Damaged Drain Pan and Condensate Pump Failures
On older air conditioning units, a rusted drain pan or one with hairline cracks leaks even when the condensate line is clear. A damaged drain pan is common on mid-2000s rooftop package units in Enterprise, Southern Highlands, and Rhodes Ranch, where UV exposure and Clark County mineral deposits accelerate cracking. In North Las Vegas and Sunrise Manor, plastic drain pans from 2005 to 2010 show the same pattern.
When the condensate pump fails, water backs up to the control board and can damage internal components within a single season.
[Placeholder: Photo of a cracked and mineral-stained drain pan removed from a rooftop packaged AC unit at a Las Vegas home, showing visible rust spots, hairline cracks, and chalky mineral deposits around the drain port.] Alt Text: Cracked drain pan removed from an aging rooftop AC unit in Las Vegas by Bob’s Repair, showing rust and mineral buildup typical of mid-2000s equipment
What this means for your home: Whether it’s a clogged line, dirty coils, or a damaged drain pan, getting a professional HVAC technician on-site fast prevents further damage and avoids costly drywall repairs. Monthly filter checks and regular HVAC maintenance are the most affordable prevention.
Frozen Coils and Dying ACs: When a Leaking Air Conditioning Unit Means the End
A clogged drain is a maintenance problem. A unit that keeps freezing on a 15-year-old system is a different conversation.
Older Las Vegas units run on R-410A refrigerant (also called Freon). Under the American Innovation and Manufacturing (AIM) Act, R-410A was discontinued for new equipment as of January 2025. A recharge that fails three months later isn’t a repair. It’s a delay.
Multiply your AC system’s age in years by the estimated repair cost. If the number tops $5,000, replacement wins. A 15-year-old unit with a $900 repair score is $13,500.
Our tech, Danny, ran this math for a Henderson homeowner on his third service call in two years for a 2010 Heil unit. At 14 years times $900, the total came to $12,600. He switched to a high-efficiency Seasonal Energy Efficiency Ratio 2 (SEER2) system and cut his first summer NV Energy bill by $90.
SEER2 is the updated federal efficiency standard. An older unit grinding 18-hour days burns significantly more power, which shows up on your NV Energy bill every month.
If your AC is freezing over because it’s 15 years old and failing, the leak is the system telling you it’s done. Find a high-efficiency SEER2 replacement that won’t freeze up in July before your next service call turns into another patch job.
Bob’s Repair is a Tesla Energy-certified solar installer and authorized Trane dealer. NATE-certified technicians on every job. Up to $500 off premium system upgrades (code UPGRADE500, NV Energy rebate eligible).
Offsetting AC Replacement Costs with Solar Panels
If you’re already committing to a $4,000 to $9,000 AC replacement, the conversation worth having is what it costs to run that unit over the next 15 years. In Las Vegas, where NV Energy bills run $300 to $400 a month from May through October, a correctly sized solar array converts your biggest seasonal expense into a fixed, depreciating investment, not an open-ended monthly charge.
Las Vegas’s abundant sunshine generates consistent solar power to offset your heavy AC usage, earning you steady NV Energy bill credits that help the system pay for itself much faster. To maximize your savings, Bob’s Repair customizes your solar setup to match your exact home energy needs while factoring in the 30 percent federal solar Investment Tax Credit (ITC).
[Placeholder: Photo of Tesla solar panels installed on the roof of a single-family home in the Las Vegas Valley, with desert landscaping and clear blue sky in the background, showing a typical residential installation by Bob’s Repair] Alt Text: Tesla solar panels installed on a Las Vegas home by Bob’s Repair, a Tesla Energy certified solar installer, offsetting NV Energy cooling costs
Sizing Solar Panels for Your HVAC System
Solar panels for HVAC in Las Vegas must be sized for one of the heaviest cooling loads in the country. Bob’s Repair measures your AC unit’s electrical draw, home square footage, and real usage data to design an array for 100 percent HVAC coverage, meaning your new AC runs at effectively zero electricity cost once the panels are paid off.
One Contractor for the Whole Job: Leak, Drywall, AC, Solar
Bob’s Repair handles everything from fixing leaks and drywall to installing new AC units and solar panels. Vegas contractors stay booked solid all summer. Using one team saves you the headache of juggling multiple schedules in 115-degree heat.
Since 2014, we’ve earned over 3,100 five-star reviews, a 4.9/5 Google rating, and coverage in Business Insider and MarketWatch. We hold Nevada contractor licenses 0085640 and 0088730, employ NATE-certified and EPA-certified technicians, and operate four service locations across the Las Vegas Valley.
Get the Leak Fixed Before It Becomes a Ceiling Repair
Turn off your leaking AC before it ruins your ceiling. Call Bob’s Repair at (702) 381-5080 for same-day emergency repair, 7 days a week. Ask us how solar panels can make your next AC upgrade practically pay for itself.
Book your appointment online. Free estimates. 100% satisfaction guarantee.
