---
title: "Tom Demarest — Clean Truck Check, North Canton, OH"
description: "Tom Demarest in North Canton, OH is on CARB's Clean Truck Check tester list. Offers OBD testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/tom-demarest-north-canton-oh/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Tom Demarest

Clean Truck Check tester in North Canton, OH.

> 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 | North Canton, OH 44720 |
| Phone | (330) 324-5636 |
| Mobile testing | No |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Tom Demarest 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 Airlimits - Youngstown in Youngstown, about 38 miles away. [See listing](https://ctcfinder.com/tester/airlimits-youngstown-youngstown-oh/).

If you need a tester at your yard, the nearest listed tester that offers mobile testing is Aaron Oblisk in Youngstown, about 38 miles away. [See listing](https://ctcfinder.com/tester/aaron-oblisk-youngstown-oh/).

## Clean Truck Check testers in Ohio

Tom Demarest is one of 18 testing businesses in Ohio on CARB's public tester list. 12 of them offer mobile testing and 5 do smoke opacity tests.

## 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 Tom Demarest offer mobile Clean Truck Check testing?

Not according to CARB's tester list; plan to bring the truck to the tester. The nearest listed mobile tester is [Aaron Oblisk](https://ctcfinder.com/tester/aaron-oblisk-youngstown-oh/) (about 38 miles).

### Can Tom Demarest test a 2012 or older diesel truck?

Tom Demarest does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Airlimits - Youngstown](https://ctcfinder.com/tester/airlimits-youngstown-youngstown-oh/) (about 38 miles). Trucks from 2013 on get an OBD scan instead.

### How much does Tom Demarest charge for a Clean Truck Check?

Tom Demarest has not published prices with us; call (330) 324-5636 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 Tom Demarest a CARB-credentialed tester?

Tom Demarest 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.