Case Study: Mystery Leak
How AirGuard Helped Uncover a Hidden Source of Moisture Before Mold Took Hold

Overview:
Even with the best precautions in place, sometimes the unexpected still sneaks in. For one vigilant homeowner with a history of mold sensitivity, recurring high humidity alerts from AirGuard didn’t add up - until she discovered the problem wasn’t in her crawlspace at all, but in her laundry room wall. This case shows how real-time monitoring and trend tracking helped prevent a potential health hazard.
The Problem: Unexpected Humidity in a “Protected” Home
This homeowner had taken every recommended step to ensure her crawlspace stayed dry and mold-free:
- Full crawlspace encapsulation
- A properly installed and functioning dehumidifier
- Routine maintenance and inspection of her HVAC system
- A strong awareness of the risks posed by indoor mold, due to personal health sensitivities
So when her AirGuard monitor began sending repeated high humidity alerts from the crawlspace, she was puzzled - and more than a little concerned. The encapsulation was intact. The dehumidifier was working. Conditions should have been perfect. Yet the data told a different story.
The Breakthrough: Connecting the Dots Through Trend Analysis
Instead of ignoring the alerts, the homeowner began digging into the AirGuard app’s trend graphs, reviewing the spikes in humidity over time. That’s when she noticed a strange pattern:
Humidity rose sharply every time she did laundry.
She hadn’t noticed anything unusual - no standing water, no strange smells - but the correlation was too strong to ignore. She called in a plumber to investigate.
The Discovery: Two Hidden Leaks
The plumber’s inspection revealed two hidden leaks:
- A slow leak from the washing machine water supply line was seeping into the crawlspace through a cracked pipe.
- A hidden plumbing leak behind the laundry room wall was saturating insulation and drywall - but not yet visible from inside the home.
Because the crawlspace was encapsulated, the water had nowhere to escape or evaporate - leading to trapped moisture and rising humidity levels that only AirGuard could detect.
The Solution: Early Intervention Prevents Mold Growth
With the leaks located, the homeowner quickly took action and had the leaks repaired. The AirGuard was left in place to continue monitoring for any residual moisture or signs of mold risk.
Thanks to the early warning, the entire incident was resolved before any mold growth occurred - something that was especially important given the homeowner’s mold sensitivity.
The Outcome: Problem Solved, Health Protected
Because she took the alerts seriously and paid attention to trends, this homeowner caught a leak that could have gone undetected for months. In homes without monitoring, that kind of hidden moisture often leads to expensive structural damage and dangerous indoor air quality. But with AirGuard, she had a silent partner watching the environment for her — 24/7.
Key Results:
✅ Humidity spike correlated with laundry use
✅ Two hidden plumbing leaks identified and fixed
✅ No mold growth, no health symptoms
✅ Ongoing confidence in indoor air quality with AirGuard monitoring
Conclusion: Sometimes, the Threat Isn’t Where You Expect It
When it comes to indoor air quality and moisture control, even the most protected homes can experience issues. The difference is whether or not you know about them in time to do something.
AirGuard didn’t just spot high humidity - it gave this homeowner the insight to connect the dots and take action early.
