Unfiltered infiltration
Air pulled in through attic, wall and garage pathways brings particulate with it.
Diagnostics
Why does my home feel humid or dusty?
Dust and humidity are delivery problems. If unfiltered air is entering from an attic, crawlspace or garage — or if the system cannot run long enough to remove moisture — no filter upgrade alone will fix it.
Every recommendation traces back to something we measured.
Likely causes
What's usually behind it
Duct leakage on the return side
Leaky returns pull dusty attic or wall-cavity air directly into the airstream.
Short cycling
Oversized equipment cools quickly without running long enough to dehumidify.
No controlled ventilation
Tight homes need intentional fresh air; leaky homes get uncontrolled, unfiltered air instead.
Filtration mismatch
High-MERV filters in an undersized filter grille restrict airflow and hurt performance.
What we check
- Indoor relative humidity across the home
- Return-side duct integrity
- Filter type, size and pressure drop
- Equipment runtime and cycling behavior
- Existing ventilation and exhaust performance
- Combustion safety where gas appliances are present
Improvements that resolve it
- Sealing return-side leakage and air-sealing infiltration pathways
- Correctly sized media filtration
- Whole-home dehumidification
- Controlled fresh-air ventilation with filtration
- Bath and kitchen exhaust correction
Related solutions
Where the fix comes from
Questions
Common questions
What humidity level should I target indoors?
Most homes are comfortable in the 45–55% relative humidity range in summer. We measure yours rather than assume it.
Will an air purifier solve it?
It can help with particulate, but it does not stop the leakage or moisture load that created the problem.
Next step
Find out what's actually happening in your home
Request your free Home Energy & Comfort Assessment, or call 844-345-2335.
Prefer email? Write to hello@citadelenergyworks.com.