How many hvac contractors are in DULUTH, MN?

56 with a current Minnesota license, as of 2026-08-31.

How do I check a Minnesota contractor license is current?

Every listing shows its state license number and expiry date. Verify any of them directly against the Minnesota DLI licensee database.

HVAC contractors in DULUTH, MN

56 listings

Source: Minnesota DLI license records. Last verified 2026-08-31.

There are 56 hvac contractors in DULUTH, Minnesota with a current state license as of 2026-08-31. The earliest license expiry among them is 2026-09-06; every listing shows its own number and expiry date. All are drawn from the Minnesota DLI register; expired and inactive licenses are excluded.

Business	License	Type	Expires	City	Zip
A G OBRIEN PLUMBING & HEATING CO	MB004598	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-07-01	DULUTH	55811	Set up workspace
A W KUETTEL & SONS INC	MB003333	Mechanical Contractor Bond — Mechanical Contractor Bond	2026-09-12	DULUTH	55811	Set up workspace
BILLS PLUMBING AND HEATING LLC	MB005660	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-03-11	DULUTH	55811	Set up workspace
BLESENER HEATING & AIR CONDITIONING	MB651477	Mechanical Contractor Bond — Mechanical Contractor Bond	2026-09-19	DULUTH	55803	Set up workspace
BLUESTONE CONSTRUCTION LLC	MB766092	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-02-05	DULUTH	55812	Set up workspace
CARLSON BROS INC	MB003519	Mechanical Contractor Bond — Mechanical Contractor Bond	2026-09-18	DULUTH	55802	Set up workspace
CARLSON DULUTH CO	MB004915	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-04-02	DULUTH	55811	Set up workspace
CITY OF DULUTH	MB733627	Mechanical Contractor Bond — Mechanical Contractor Bond	2027-10-24	DULUTH	55802	Set up workspace
DESIGN HEATING LLC	MB715020	Mechanical Contractor Bond — Mechanical Contractor Bond	2026-09-12	DULUTH	55803	Set up workspace
D G SOLEM & SONS LLC	MB749458	Mechanical Contractor Bond — Mechanical Contractor Bond	2026-12-05	DULUTH	55804	Set up workspace
DULUTH SERVICE PLUMBING LLC	MB689891	Mechanical Contractor Bond — Mechanical Contractor Bond	2027-01-07	Duluth	55808	Set up workspace
DULUTH STOVE & FIREPLACE LLC	MB739106	Mechanical Contractor Bond — Mechanical Contractor Bond	2027-12-20	DULUTH	55806	Set up workspace
EASYLIVING SERVICES LLC	MB100153	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-04-26	Duluth	55807	Set up workspace
GARTNER REFRIGERATION COMPANY	MB003219	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-08-27	DULUTH	55806	Set up workspace
GENERAL HEATING AND MECHANICAL INC	MB004534	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-09-10	DULUTH	55816	Set up workspace
GROPPOLI CUSTOM Finishing Llc	MB100138	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-04-18	Duluth	55807	Set up workspace
GUTHRIE PLUMBING & HEATING LLC	MB005520	Mechanical Contractor Bond — Mechanical Contractor Bond	2026-09-30	DULUTH	55811	Set up workspace
HARBOR MECHANICAL INCORPORATED	MB646283	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-02-02	DULUTH	55804	Set up workspace
Heirloom Property Services	MB100330	Mechanical Contractor Bond — Mechanical Contractor Bond	2027-11-06	Duluth	55802	Set up workspace
HIETALA PLUMBING & HEATING	MB684937	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-05-19	DULUTH	55810	Set up workspace
HUMES PLUMBING & HEATING LLC	MB004360	Mechanical Contractor Bond — Mechanical Contractor Bond	2026-11-30	DULUTH	55803	Set up workspace
INTEGRITY MECHANICAL SERVICES LLC	MB779762	Mechanical Contractor Bond — Mechanical Contractor Bond	2027-04-08	DULUTH	55811	Set up workspace
INTER CITY OIL CO INC	MB004408	Mechanical Contractor Bond — Mechanical Contractor Bond	2026-12-13	DULUTH	55803	Set up workspace
JSN MOBILE HOME HEATING	MB004990	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-01-01	DULUTH	55803	Set up workspace
KALKBRENNER PLUMBING & HEATING INC	MB003923	Mechanical Contractor Bond — Mechanical Contractor Bond	2026-10-14	DULUTH	55808	Set up workspace
KB PLUMBING & HEATING	MB648159	Mechanical Contractor Bond — Mechanical Contractor Bond	2026-11-18	DULUTH	55806	Set up workspace
KRAUSE SHEET METAL & HEATING INC	MB003940	Mechanical Contractor Bond — Mechanical Contractor Bond	2026-10-24	DULUTH	55806	Set up workspace
LETOURNEAU HEATING & REFRIGERATION LLC	MB004451	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-01-19	DULUTH	55805	Set up workspace
L & S PLUMBING & HEATING LLC	MB657602	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-07-31	DULUTH	55811	Set up workspace
McKeever Housing and Heating LLC	MB100216	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-08-21	Duluth	55811	Set up workspace
MEDLIN CONSTRUCTION LLC	MB669087	Mechanical Contractor Bond — Mechanical Contractor Bond	2027-06-05	DULUTH	55802	Set up workspace
MICKS PLUMBING LLC	MB803430	Mechanical Contractor Bond — Mechanical Contractor Bond	2027-01-31	DULUTH	55804	Set up workspace
MMT HEATING & COOLING INC	MB003698	Mechanical Contractor Bond — Mechanical Contractor Bond	2026-10-01	DULUTH	55811	Set up workspace
MODERN MECHANICAL AND AUTOMATION LLC	MB767139	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-03-02	DULUTH	55802	Set up workspace
MURPHS PLUMBING & HEATING LLC	MB003942	Mechanical Contractor Bond — Mechanical Contractor Bond	2026-11-03	DULUTH	55803	Set up workspace
NORTHERN SUN PLUMBING & HEATING LLC	MB100536	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-03-19	Duluth	55803	Set up workspace
NORTH LAKES PLUMBING HEATING AND AIR LLC	MB751648	Mechanical Contractor Bond — Mechanical Contractor Bond	2026-12-10	DULUTH	55803	Set up workspace
Northland Air	MB100594	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-06-05	Duluth	55804	Set up workspace
NORTHLAND AIR	MB802993	Mechanical Contractor Bond — Mechanical Contractor Bond	2027-01-20	DULUTH	55805	Set up workspace
NORTHSTAR SERVICES	MB648791	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-04-13	DULUTH	55807	Set up workspace
Outlaw Services, LLC	MB999941	Mechanical Contractor Bond — Mechanical Contractor Bond	2027-09-12	Duluth	55804	Set up workspace
PLUMBING AND HEATING SOLUTIONS INC	MB734073	Mechanical Contractor Bond — Mechanical Contractor Bond	2027-10-27	DULUTH	55804	Set up workspace
Polar Plumbing Heating & Air Inc	MB100378	Mechanical Contractor Bond — Mechanical Contractor Bond	2027-06-04	Duluth	55804	Set up workspace
Premier Companies Inc	MB999943	Mechanical Contractor Bond — Mechanical Contractor Bond	2027-09-20	Duluth	55807	Set up workspace
PREMIER PLUMBING AND HEATING LLC	MB798767	Mechanical Contractor Bond — Mechanical Contractor Bond	2026-09-06	DULUTH	55811	Set up workspace
RG BROWN PLUMBING & HEATING LLC	MB797480	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-08-01	DULUTH	55803	Set up workspace
R J MEHRMAN & SONS INC	MB003023	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-07-01	DULUTH	55804	Set up workspace
RN PLUMBING AND HEATING LLC	MB649346	Mechanical Contractor Bond — Mechanical Contractor Bond	2028-05-18	DULUTH	55804	Set up workspace
SHEET METAL SOLUTIONS LLC	MB670895	Mechanical Contractor Bond — Mechanical Contractor Bond	2027-07-29	DULUTH	55806	Set up workspace
SHUBITZ PLUMBING & HEATING LLC	MB647953	Mechanical Contractor Bond — Mechanical Contractor Bond	2027-12-31	DULUTH	55806	Set up workspace

Showing 1–50 of 56

Quick answers

How many hvac contractors are in DULUTH?: 56 with a current Minnesota license, as of 2026-08-31.
How do I check a license is current?: Every listing shows its state license number and expiry. Verify any of them directly against the Minnesota DLI licensee database.