ContractorHistory

HVAC contractors in Washington

864 active hvac contractors are registered with Washington L&I. 1,597 registrations are on record in all, including expired and other statuses.

189 of the active hvac contractors registered in Washington are based in other states.

By the numbers

Active registrations
864
Registrations on record, all statuses
1,597
Registered in the last 12 months
137
Median years registered, active
5
Suspension on record
118
Complaint records matched
13
Active, based outside Washington
189

HVAC contractors by city

Active registrations in the Washington cities with the most, among cities that have a directory page.

Longest registered

  1. HUNTER-DAVISSON INCRegistered since January 23, 1967 · Portland, OR
  2. ROBBEN & SONS HTG INCRegistered since August 28, 1967 · Clackamas, OR
  3. COMMERCIAL REFRIGERATION INCRegistered since April 27, 1976 · Portland, OR
  4. PACIFIC AIR CONTROL INCRegistered since October 28, 1977 · Bothell, WA
  5. NARROWS HEATING/AIR CNDTNG, INRegistered since April 23, 1979 · Tacoma, WA

Recently registered

  1. AIRSTONE HEATING & AIR LLCRegistered on October 5, 2026 · Auburn, WA
  2. MOGOVOLT HEATING & COOLING LLCRegistered on October 2, 2026 · Bothell, WA
  3. MAYS GAS PIPING LLCRegistered on September 25, 2026 · Enumclaw, WA
  4. RAIN CITY MECHANICAL LLCRegistered on September 25, 2026 · Tulalip, WA
  5. SPOTLESS AIRRegistered on September 21, 2026 · Everett, WA

Active registrations, by the effective date on the state's record.

All 1,597 registrations on record

Businesses by registered name and license number. Show only the 864 active registrations.