# J J Sullivan INC

J J Sullivan INC appears in a public register or member directory, with an address in Guilford, CT, United States. Confirm services and current qualifications directly.

J J Sullivan INC appears on the Connecticut Department of Consumer Protection register (HEATING, PIPING & COOLING UNLIMITED CONTRACTOR (S1)), with an address in Guilford, CT.

## Details

- Address: 229 River St, Guilford, CT, 06437-1024, United States
- Website: [jjsullivaninc.com/](<https://jjsullivaninc.com/>)
- Register / bond / licence number: HTG.0407810-S1
- Register authority or trade association: Connecticut Department of Consumer Protection
- Source of the listing data: Connecticut eLicense — State Licenses and Credentials, https://data.ct.gov/resource/ngch-56tr.json?%24where=credential+like+%27HEATING%25CONTRACTOR%27+AND+active%3D%271%27&%24limit=15000, fetched 2026-11-10. Website, street address, map pin from Overture Maps Places (CDLA-Permissive-2.0, release 2026-10-21.0).

## Questions

### Where is J J Sullivan INC?

J J Sullivan INC is at 229 River St, Guilford, CT, 06437-1024, United States.

### How do I contact J J Sullivan INC?

To contact J J Sullivan INC, visit https://jjsullivaninc.com/.

## Source

From [Public registers and member directories (source summary)](https://data.ct.gov/resource/ngch-56tr.json?%24where=credential+like+%27HEATING%25CONTRACTOR%27+AND+active%3D%271%27&%24limit=15000), license Connecticut: Public Domain metadata; Washington: Open Data Commons PDDL 1.0; Minnesota, TSSA, TSASK and SNIPEF: public register; no reuse licence stated, checked 2026-11-11.

Last updated November 11, 2026.

## Links

- This heating contractor on the [web page](<https://boilerpros.fyi/us/ct/guilford/j-j-sullivan-inc>)
- [Registered heating / mechanical contractors in Guilford](<https://boilerpros.fyi/us/ct/guilford/category/boiler-servicing.md>)
- [More heating contractors in Guilford](<https://boilerpros.fyi/us/ct/guilford.md>)