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.

All 62 registrations on record

Businesses by registered name and license number. Show only the 36 active registrations.

ACCURATE MECHANICAL LLCACTIVE
License ACCURML765JS · Registered 2 years
ACE HVAC SERVICE LLCACTIVE
License ACEHVHS797OT · Registered 5 years
ADVANCED ENERGY SAVERS INCACTIVE
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
AVR REFRIGERATION & REPAIRACTIVE
License AVRRERR844R8 · Registered 9 years
BLACK LOTUS HVAC LLCACTIVE
License BLACKLH759B9 · Registered 1 year
CLOUD 9 HEATING & AIR LLCACTIVE
License CLOUD9H773CA · Registered 3 years
COFFMAN ENGINEERS INCACTIVE
License COFFMEI866O9 · Registered 12 years
COMFORT TECH HEATING & A/C INCACTIVE
License COMFOTH898CM · Registered 15 years
COMMERCIAL FILTER SALES & SVCACTIVE
License COMMEFS935B5 · Registered 19 years
ELITE HVAC & REFRIGERATION LLCACTIVE
License ELITEHR741K2 · Registered less than 1 year
ENERGY EFFICIENT SYSTEM LLCACTIVE
License ENERGES843Q9 · Registered 9 years
ENERGY TECHNOLOGIES LLCACTIVE
License ENERGTL916K1 · Registered 17 years
ENTERO SYSTEM SERVICES INCACTIVE
License ENTERSS892MH · Registered 14 years
EXCEL PACIFIC MECH INSUL INCACTIVE
License EXCELPM989CE · Registered 24 years
GO GREEN HEATING AC & ELEC LLCACTIVE
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
LONG EQUIPMENT REPAIR PLLCACTIVE
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
Olson Energy Serv/Gas Appl SvcACTIVE
License OLSONES863OD · Registered 12 years
PRO HEAT LLCACTIVE
License PROHEHL932JZ · Registered 19 years
PROGRESSIVE COMFORT SOLUTIONSACTIVE
License PROGRCS863J1 · Registered 12 years
REFRIGERATION DOCTORACTIVE
License REFRID*782OA · Registered 4 years
STREAMLINE NATURAL GAS SVS INCACTIVE
License STREANG960PM · Registered 21 years
UNI REFRIGERATIONACTIVE
License UNIRER*919PA · Registered 17 years
UNIVERSAL APP & COM REFG LLCACTIVE
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
ACCURATE HEATING & ELECT LLCEXPIRED
License ACCURHE952NQ · First registered 2005
AMIN REFRIGERATIONEXPIRED
License AMINRR*808RQ · First registered 2020
APARAHEATINGANDCOOLING LLCEXPIRED
License APARAL*787L1 · First registered 2022
COMFORT FOR LESS HTG & COOLINGEXPIRED
License COMFOFL942B7 · First registered 2006
DOUBLE BOND HEATING AND AIREXPIRED
License DOUBLBH859CF · First registered 2015
DP HEATING LLCEXPIRED
License DPHEAHL833RE · First registered 2017
FEMBOR LLCEXPIRED
License FEMBOL*814M9 · First registered 2019
FURNACEUSA LLCEXPIRED
License FURNAL*812MZ · First registered 2019
GLASTRA HEATING INCEXPIRED
License GLASTH*280RA · First registered 1972
GO GREEN HTG AND A/C LLCEXPIRED
License GOGREGH851RW · First registered 2015
HILLYARD HEATINGEXPIRED
License HILLYH*117O7 · First registered 1989
INDUSTRIAL HVAC SERVICESEXPIRED
License INDUSHS774N1 · First registered 2023
JAMES HEATING AND MOREEXPIRED
License JAMESHM965NW · First registered 2004
KANE AIR LLCSUSPENDED
License KANEAAL755CO · First registered 2025