How ozone works, and where it falls short
Ozone is an unstable form of oxygen that reacts with many odor-causing molecules, changing them into compounds that may smell less or not at all. In a small, sealed cabin a generator can reach high concentrations quickly, which is why detailers have used it for years as a finishing step. The problem is that ozone works at the surface. It does not lift spilled milk from a carpet pad, clean tar film off a headliner or wash pepper oil out of seat fabric.
When the source is still there, odor tends to return as the ozone breaks down and the residue warms up in the next hot spell. Owners who pay for a quick ozone shock and see the smell come back a week later have usually run into this. Used as a final step after the actual cleaning, ozone can help with what remains. Used instead of cleaning, it mostly delays the problem.
What long or repeated ozone exposure can affect
| Material | Possible effect | Where you would notice |
|---|---|---|
| Rubber seals and gaskets | Drying, hardening, fine cracking | Door and window seals, sunroof gaskets |
| Elastic and stretch fabrics | Loss of stretch, brittleness | Seat map pockets, elastic straps |
| Some plastics and vinyl | Fading or chalky surface over time | Dashboard top, door panel inserts |
| Electronics and screens | Concern raised by some manufacturers about prolonged exposure | Owner's manual warnings, if any |
| Leather | Potential drying with heavy exposure | Steering wheel and seat bolsters |
If a provider plans to use ozone, ask
- Is ozone the main treatment, or a final step after cleaning the sources?
- How long will the generator run, and at what output?
- How will the car be aired out before I pick it up?
- Are there alternatives, such as chlorine dioxide or hydroxyl treatment, and why would you choose one over another?
- Has my car's age or condition changed your plan?
Ozone versus residue removal
Ozone alone
- Fast and inexpensive to run
- Reduces some airborne and surface odor
- Leaves the original residue in place
- Smell often returns with heat and humidity
- Can age rubber and plastics with repeated use
Source cleaning first
- Takes longer and costs more labor
- Removes the residue causing the smell
- Reaches pad, foam and headliner when done properly
- Results hold up better through Colorado summers
- May still finish with a short deodorizing step
General information for Aurora, not a quote or professional advice. In an emergency, call 911.