# Welch Heating & A/C LLC Welch Heating & A/C LLC appears in a public register or member directory, with an address in Richland, WA, United States. Confirm services and current qualifications directly. Welch Heating & A/C LLC appears on the Washington State Department of Labor & Industries register (ELECTRICAL CONTRACTOR — HVAC/RFRG), with an address in Richland, WA. Services named in the source: HVAC/RFRG. ## Details - Address: 1229 COLUMBIA PARK TRAIL, Richland, WA, 99352, United States - Phone: [15098203333]() - Website: [welchheatingandac.com/]() - Register / bond / licence number: WELCHHC841LS - Register authority or trade association: Washington State Department of Labor & Industries - Source of the listing data: Washington L&I — Contractor License Data, https://data.wa.gov/resource/m8qx-ubtq.json?%24where=contractorlicensestatus%3D%27ACTIVE%27+AND+specialtycode1+in+%28%27AC%27%2C%27SM%27%2C%276A%27%29&%24limit=5000&%24order=businessname, fetched 2026-11-10. Website, map pin from Overture Maps Places (CDLA-Permissive-2.0, release 2026-10-21.0). ## Questions ### Where is Welch Heating & A/C LLC? Welch Heating & A/C LLC is at 1229 COLUMBIA PARK TRAIL, Richland, WA, 99352, United States. ### How do I contact Welch Heating & A/C LLC? To contact Welch Heating & A/C LLC, call 15098203333 or visit https://welchheatingandac.com/. ## Source From [Public registers and member directories (source summary)](https://data.wa.gov/resource/m8qx-ubtq.json?%24where=contractorlicensestatus%3D%27ACTIVE%27+AND+specialtycode1+in+%28%27AC%27%2C%27SM%27%2C%276A%27%29&%24limit=5000&%24order=businessname), 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]() - [Registered heating / mechanical contractors in Richland]() - [More heating contractors in Richland]()