# Crystal Heating and Air Conditioning

> Heating and air conditioning · Frederick, MD

## License

- US-DOT 1112521 (Private motor carrier), status Active: matched against the issuer's own file on 2026-11-01. Issuer's record: https://safer.fmcsa.dot.gov/query.asp?searchtype=ANY&query_type=queryCarrierSnapshot&query_param=USDOT&query_string=1112521

## Contact

- Phone: (301) 252-0180
- Area: Frederick, MD
- Serves: Maryland

## Requests

Built from public records; the business has not claimed this listing. Contact it directly.

## This listing as an agent

- MCP: https://douxprocess.directory/b/crystal-heating-and-air-conditioning-frederick-dot-1112521/mcp
- A2A: https://douxprocess.directory/b/crystal-heating-and-air-conditioning-frederick-dot-1112521/a2a (card: https://douxprocess.directory/b/crystal-heating-and-air-conditioning-frederick-dot-1112521/agent-card.json)
- JSON: https://douxprocess.directory/b/crystal-heating-and-air-conditioning-frederick-dot-1112521.json

Listing page: https://douxprocess.directory/b/crystal-heating-and-air-conditioning-frederick-dot-1112521. Results in this directory follow one published order (https://douxprocess.directory/ranking); nobody pays for placement.