HVAC contractors in Seattle, WA
36 active hvac contractors are registered with Washington L&I at a Seattle, WA address. 62 registrations are on record in all, including expired and other statuses.
By the numbers
- Active registrations
- 36
- Registrations on record, all statuses
- 62
- Registered in the last 12 months
- 8
- Median years registered, active
- 6.5
- Suspension on record
- 5
- Complaint records matched
- 0
- Counts of L&I contractor registration records, computed October 8, 2026. Active means the state's record shows ACTIVE status. Years are counted from each registration's effective date.
- Suspension on record: registrations with SUSPENDED status, plus active or re-licensed registrations that carry a suspension date.
- Complaint records matched: contractors with at least one Attorney General consumer complaint record under the same business name and city. A complaint record is not a finding of wrongdoing.
- Sources: L&I Contractor License Data - General andAttorney General Consumer Complaints. Seehow directory numbers are computed.
Longest registered
- ADVANCED ENERGY SAVERS INCRegistered since May 29, 1990
- EXCEL PACIFIC MECH INSUL INCRegistered since February 5, 2002
- STREAMLINE NATURAL GAS SVS INCRegistered since October 14, 2004
- GREAT SUN CORPRegistered since March 21, 2005
- UNIVERSAL APP & COM REFG LLCRegistered since August 11, 2005
Recently registered
- APL REPAIRS LLCRegistered on August 17, 2026
- MINI SPLIT PROSRegistered on July 1, 2026
- ELITE HVAC & REFRIGERATION LLCRegistered on May 22, 2026
- H2RC LLCRegistered on March 24, 2026
- VENT SERVICESRegistered on January 2, 2026
Active registrations, by the effective date on the state's record.
36 active registrations
Businesses by registered name and license number. Show all 62 registrations on record, including expired.
- ACCURATE MECHANICAL LLCACTIVE
License ACCURML765JS · Registered 2 years
- ACE HVAC SERVICE LLCACTIVE
License ACEHVHS797OT · Registered 5 years
License ADVANES100K9 · Registered 36 years
- AMBIENT AIR HEATING LLCACTIVE
License AMBIEAH822BD · Registered 8 years
- APL REPAIRS LLCACTIVE
License APLRERL747NM · Registered less than 1 year
- APOLLONIUS LLCACTIVE
License APOLLL*751N9 · Registered 1 year
License AVRRERR844R8 · Registered 9 years
- BLACK LOTUS HVAC LLCACTIVE
License BLACKLH759B9 · Registered 1 year
License CLOUD9H773CA · Registered 3 years
- COFFMAN ENGINEERS INCACTIVE
License COFFMEI866O9 · Registered 12 years
License COMFOTH898CM · Registered 15 years
License COMMEFS935B5 · Registered 19 years
License ELITEHR741K2 · Registered less than 1 year
License ENERGES843Q9 · Registered 9 years
- ENERGY TECHNOLOGIES LLCACTIVE
License ENERGTL916K1 · Registered 17 years
License ENTERSS892MH · Registered 14 years
License EXCELPM989CE · Registered 24 years
License GOGREGH752DL · Registered 1 year
- GREAT SUN CORPACTIVE
License GREATSC951D1 · Registered 21 years
- H2RC LLCACTIVE
License H2RCLL*749D4 · Registered less than 1 year
- JOANIS MECHANICAL LLCACTIVE
License JOANIML891D3 · Registered 15 years
- LEBLANC PACIFIC LLCACTIVE
License LEBLAPL753P2 · Registered less than 1 year
License LONGEER778J5 · Registered 3 years
- LUNA HOME COMFORT LLCACTIVE
License LUNAHHC754QQ · Registered less than 1 year
- METHOD ENERGY LLCACTIVE
License METHOEL771ME · Registered 3 years
- MINI SPLIT PROSACTIVE
License MINISSP744L4 · Registered less than 1 year
- NEUDORFER ENGINEERS LLCACTIVE
License NEUDOEL787LN · Registered 4 years
License OLSONES863OD · Registered 12 years
- PRO HEAT LLCACTIVE
License PROHEHL932JZ · Registered 19 years
License PROGRCS863J1 · Registered 12 years
- REFRIGERATION DOCTORACTIVE
License REFRID*782OA · Registered 4 years
License STREANG960PM · Registered 21 years
- UNI REFRIGERATIONACTIVE
License UNIRER*919PA · Registered 17 years
License UNVAPAC954NJ · Registered 21 years
- VENT SERVICESACTIVE
License VENTSS*756RT · Registered less than 1 year
- WESTWORLD AIRWORKS LLCACTIVE
License WESTWAL757P8 · Registered less than 1 year