---
title: "Clean Air Pro — Clean Truck Check, San Lorenzo, CA"
description: "Clean Air Pro in San Lorenzo, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/clean-air-pro-san-lorenzo/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Clean Air Pro

Clean Truck Check tester in San Lorenzo, CA (Alameda County).

> CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester.

| Field | Value |
|---|---|
| Location | 17020 Via Chiquita, San Lorenzo, CA 94580 |
| County | Alameda County |
| Phone | (510) 314-3969 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Clean Air Pro can test

| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Yes |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes |
| Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Not listed |
| California-registered motorhome | Same test as above by engine year, once a year | Not listed |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Doc Bailey Construction in San Lorenzo, about 1 mile away. [See listing](https://ctcfinder.com/tester/doc-bailey-construction-san-lorenzo/).

## Clean Truck Check testers in Alameda County

Clean Air Pro is one of 85 testing businesses in Alameda County on CARB's public tester list. 79 of them offer mobile testing and 37 do smoke opacity tests. In San Lorenzo itself there are 3 listed businesses, 3 of them mobile.

## When your truck is due

Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the [deadline guide](https://ctcfinder.com/guide/deadlines-2026-2027/). You can test up to 90 days before a deadline. Free email reminders: https://ctcfinder.com/reminders/

## Frequently asked questions

### Does Clean Air Pro offer mobile Clean Truck Check testing?

Yes. Clean Air Pro says on CARB's tester list that it offers mobile testing, so it can come to your yard or job site. Ask about a trip fee when you call.

### Can Clean Air Pro test a 2012 or older diesel truck?

Clean Air Pro does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Doc Bailey Construction](https://ctcfinder.com/tester/doc-bailey-construction-san-lorenzo/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Clean Air Pro charge for a Clean Truck Check?

Clean Air Pro has not published prices with us; call (510) 314-3969 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the [cost guide](https://ctcfinder.com/guide/cost/).

### Is Clean Air Pro a CARB-credentialed tester?

Clean Air Pro appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS.

## Other testers nearby

- **[Doc Bailey Construction](https://ctcfinder.com/tester/doc-bailey-construction-san-lorenzo/)** — 2584 Grant Ave, San Lorenzo, CA 94580 — (510) 935-1290 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Doc Bailey construction equipment, inc](https://ctcfinder.com/tester/doc-bailey-construction-equipment-inc-san-lorenzo/)** — 2584 Grant Ave, San Lorenzo, CA 94580 — (646) 707-1919 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Jaime Morales](https://ctcfinder.com/tester/jaime-morales-san-leandro/)** — San Leandro, CA 94578 — (650) 219-2225 — 2 mi. Services: mobile testing, OBD testing.
- **[Mobile Golden State Emissions San Leandro](https://ctcfinder.com/tester/mobile-golden-state-emissions-san-leandro-san-leandro/)** — 15267 Hesperian Blvd., San Leandro, CA 94578 — (925) 818-1831 — 2 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Roadway mobile truck services](https://ctcfinder.com/tester/roadway-mobile-truck-services-san-leandro/)** — 1516 162nd Ave, San Leandro, CA 94578 — (510) 213-2967 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Yazid Kahil](https://ctcfinder.com/tester/yazid-kahil-san-leandro/)** — San Leandro, CA 94578 — (510) 520-3051 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.