The short answer
Turn off the System First
When you notice an HVAC leak, the first step is to turn off the air conditioner or heat pump at the thermostat and the breaker. This stops the flow of water and prevents electrical hazards. If the unit is a rooftop package or a split system, locate the disconnect switch and power it down.
Next, shut off the water supply if the leak comes from a condensate line or humidifier. Find the shutoff valve and close it. If you live in Scottsdale, write down the valve location now so you can act quickly when it matters. Then place a bucket or towel under the drip to catch water while you prepare for cleanup.
Dry Out the Affected Area
Once the system is off, remove any standing water with a wet/dry vacuum or towels. Open windows and doors if the weather allows, and run fans to circulate air. A dehumidifier helps pull moisture from carpets, drywall, and wood. The sooner you dry the space, the less chance of warping or mold growth.
If the leak soaked into drywall or insulation, you may need to cut out the damaged sections. Use a moisture meter if you have one to check how far the water traveled. For large areas, the pros use industrial air movers and drying equipment to speed up the process, but you can start with basic household tools.
Remove Water-Damaged Materials
Carpet padding, soaked insulation, and saturated drywall rarely dry well and can harbor mold. Remove these materials carefully, wearing gloves and a mask. Dispose of them according to local waste rules. If you have personal items like photos or documents, dry them flat and separate wet pages with paper towels.
Hard surfaces like tile and concrete can often be cleaned and dried. Wipe down surfaces with a mild detergent and water. For wood floors, dry quickly to avoid cupping. If water reached electrical outlets or light fixtures, turn off the breaker and call an electrician before touching anything.
Check for Mold and Mildew
Mold can start growing within 24 to 48 hours in warm, damp conditions. Look for dark spots on walls, baseboards, and around the HVAC unit. A musty smell is a warning sign. If you see mold or feel unwell, see a doctor if symptoms persist. For small patches, clean with soap and water.
For larger mold growth, a mold professional can assess the situation and recommend safe removal. Do not attempt to clean large areas yourself without proper protection. Keep the area ventilated and dry to slow spread. If the leak came from a refrigerant line, that's a different issue and may require an HVAC repair person.
Call the Pros for Big Leaks
If the water spread into multiple rooms, soaked through floors, or reached electrical systems, local water damage pros can handle the extraction and drying. They have specialized equipment like moisture meters, air movers, and dehumidifiers. They can also help determine what materials need to be removed.
Before you call, take photos of the damage for your records. If you plan to file an insurance claim, check your policy first. Policies vary, and your insurer decides what is covered. Contact your insurer directly to start the claims process.
Shut off the HVAC system and power before cleanup.
Use fans and dehumidifiers to dry the area thoroughly.
Remove soaked drywall, carpet, and insulation promptly.
Wear gloves and a mask when handling wet materials.
Look for mold signs within 24 to 48 hours.
Contact local water damage pros for extensive water spread.
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Call Now (623) 624-8391Frequently asked questions
How long does it take to dry out an HVAC leak?
Drying time depends on the amount of water and the materials affected. Small leaks in hard surfaces can dry in a day with fans and dehumidifiers. Soaked drywall or carpet may take several days, and you may need to remove them. The pros can speed up the process with commercial equipment.
Can I clean up an HVAC leak myself?
Yes, for small leaks that haven't spread far. Turn off the system, dry the area, and remove water-damaged materials. For large leaks that soaked into walls or ceilings, or if mold appears, it's safer to call the pros. They have the tools and knowledge to handle extensive drying and cleanup.
Will my insurance cover HVAC water damage?
Coverage depends on your policy and the cause of the leak. Check your policy documents and contact your insurance company to ask about your specific situation. Policies vary, and your insurer decides what is covered. Take photos and document the damage before you start cleanup.