HVAC contractors in Washington
868 active hvac contractors are registered with Washington L&I. 1,598 registrations are on record in all, including expired and other statuses.
190 of the active hvac contractors registered in Washington are based in other states.
All 1,598 registrations on record
Businesses by registered name and license number. Show only the 868 active registrations.
- MILLIAN AIRE ENTERPRISES CORPRE-LICENSED
Hudson, FL · License MILLIAE826JE · First registered 2018
- MJ MECHANICALEXPIRED
North Salt Lake, UT · License MJMECM*817O5 · First registered 2019
- MJ'S HEATING & AIR COND LLCEXPIRED
Seattle, WA · License MJSHEHA809RC · First registered 2021
- MJR MECHANICAL LLCEXPIRED
Edmonds, WA · License MJRMEML913R8 · First registered 2009
- MODERN AIR SOLUTIONS LLCEXPIRED
Everett, WA · License MODERAS782DH · First registered 2022
- MODERN HTNG & AIR CNDTNG LLCEXPIRED
Covington, WA · License MODERHA796CH · First registered 2021
- MORAE MECHANICAL INC WAEXPIRED
Hillsboro, OR · License MORAEMI809QR · First registered 2021
- MOREHART HEATING AND AIREXPIRED
Peoria, AZ · License MOREHHA834P5 · First registered 2017
- MORGAN HOME SHIELD LLCRE-LICENSED
Spokane, WA · License MORGAHS748DD · First registered 2026
- MORRIS MECHANICAL LLCEXPIRED
Covington, WA · License MORRIML791OZ · First registered 2021
- MOTILI INCSUSPENDED
Denver, CO · License MOTILI*761QB · First registered 2025
- MOUNTAIN AIR HVAC SERVICERE-LICENSED
Walla Walla, WA · License MOUNTAH832QH · First registered 2017
- MOUNTAINSIDE RADIANT HEATINGEXPIRED
Enumclaw, WA · License MOUNTRH917JL · First registered 2009
- MTEK INCSUSPENDED
Burley, WA · License MTEKII*759J8 · First registered 2025
- MULTNOMAH HEATING INCEXPIRED
Gresham, OR · License MULTNHI961LJ · First registered 2004
- Mason Energy LLCEXPIRED
Shelton, WA · License MASONEL852LS · First registered 2015
- Monaghan Mechanical IncEXPIRED
Hayden, ID · License MONAGMI899LG · First registered 2011
- N P M PLUMBING & MECH INCEXPIRED
Seattle, WA · License NPMPLM*033RZ · First registered 1997
- NATIONAL BOILER SERVICE INCEXPIRED
Trenton, GA · License NATIOBS891B8 · First registered 2011
- NATIONAL HEATING COMPANYEXPIRED
Tacoma, WA · License NATIOHC793J3 · First registered 2021
- NATIONAL HTG AND AC SVC LLCEXPIRED
Spokane, WA · License NATIOHA859OT · First registered 2015
- NBA HEATING AND COOLING LLCEXPIRED
Portland, OR · License NBAHEHC839OO · First registered 2017
- NEUDORFER ENGINEERS INCRE-LICENSED
Seattle, WA · License NEUDOEI164PD · First registered 1984
- NEW ERA HVAC LLCEXPIRED
Gold Bar, WA · License NEWEREH841BD · First registered 2016
- NEW ERA HVAC SUPREME INCSUSPENDED
Snohomish, WA · License NEWEREH772QP · First registered 2023
- NICKELL HEATING & AIR LLCRE-LICENSED
Roy, WA · License NICKEHA819DG · First registered 2019
- NIKOLAY'S HEATING LLCEXPIRED
Mount Vernon, WA · License NIKOLHL889DE · First registered 2012
- NILSEN MECHANICAL LLCEXPIRED
Sultan, WA · License NILSEML789JH · First registered 2022
Birmingham, AL · License NORTHAC983QF · First registered 2002
- NORTH CASCADES PROPANE SVCEXPIRED
Twisp, WA · License NORTHCP888DN · First registered 2012
- NORTH WIND MECHANICAL LLCEXPIRED
Mesa, AZ · License NORTHWM849DW · First registered 2016
- NORTHERN COMFORT LLCRE-LICENSED
Arlington, WA · License NORTHCL790K7 · First registered 2021
- NORTHWEST AIR PERFORMANCE LLCOUT OF BUSINESS
Henderson, NV · License NORTHAP824QR · First registered 2018
- NORTHWEST AUTOMATIONEXPIRED
Spokane, WA · License NORTHA*783KK · First registered 2022
- NORTHWEST DUCTLESS SOLUTIONSRE-LICENSED
Spokane, WA · License NORTHDS753DQ · First registered 2025
- NORTHWEST GAS PIPE LLCEXPIRED
Kennewick, WA · License NORTHGP811RK · First registered 2019
- NORTHWEST GAS PIPINGEXPIRED
Kelso, WA · License NORTHGP824PD · First registered 2018
- NORTHWEST HEATING & A/C LLCEXPIRED
Kennewick, WA · License NORTHHC793K5 · First registered 2021
- NORTHWEST HEATING SERVICES LLCRE-LICENSED
Custer, WA · License NORTHHS805B8 · First registered 2020
- NORTHWEST HEATING/COOLING INCRE-LICENSED
Chehalis, WA · License NORTHHI948LK · First registered 2006
- NOVA PRIME HVAC LLCEXPIRED
White Salmon, WA · License NOVAPPH764LP · First registered 2024
- NUERA HEATEXPIRED
Vancouver, WA · License NUERAH*797CD · First registered 2021
- NW ALTERNATIVE ENERGY LLCEXPIRED
Aberdeen, WA · License NWALTAE825B9 · First registered 2018
- NW COMMERCIAL SERVICES LLCEXPIRED
Seattle, WA · License NWCOMCS829NC · First registered 2018
- NW VENTINGRE-LICENSED
Ridgefield, WA · License NWVENV*822LH · First registered 2018
- NWP SOLUTIONS LLCRE-LICENSED
Spokane, WA · License NWPSOSL764PA · First registered 2024
- OCEAN AIR CONTRACTINGEXPIRED
Elma, WA · License OCEANAC798DW · First registered 2021
- OLY HEATINGOUT OF BUSINESS
Oakville, WA · License OLYHEH*781KB · First registered 2022
- OLYMPIA DUCTLESS LLCSUSPENDED
Olympia, WA · License OLYMPDL750LB · First registered 2025
- OLYMPIC HEATING INCEXPIRED
Edmonds, WA · License OLYMPHI952O7 · First registered 2005