How many plumbing contractors are in DULUTH, MN?

54 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.

Plumbing contractors in DULUTH, MN

54 listings

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

There are 54 plumbing contractors in DULUTH, Minnesota with a current state license as of 2026-08-31. The earliest license expiry among them is 2027-11-18; 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
ADVANTAGE AIR PLUMBING HEATING & COOLING INC	PC150082	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55811	Set up workspace
A G OBRIEN PLUMBING & HEATING CO	PC001260	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55811	Set up workspace
A M MECHANICAL	PC644515	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55810	Set up workspace
AQUA TECH PLUMBING SOLUTIONS LLC	PC794890	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55803	Set up workspace
A&T Pump Service LLC	PR999908	Plumbing — Restricted Plumbing Contractor	2027-12-31	Duluth	55803	Set up workspace
A W KUETTEL & SONS INC	PC643830	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55811	Set up workspace
BILLS PLUMBING AND HEATING LLC	PC643660	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55811	Set up workspace
CALDWELL PLUMBING & HEATING INC	PC712119	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55802	Set up workspace
CARLSON BROS INC	PC644056	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55802	Set up workspace
CARLSON DULUTH CO	PC651588	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55811	Set up workspace
CEDAR DRIVE EXCAVATING INC	PR644608	Plumbing — Restricted Plumbing Contractor	2027-12-31	DULUTH	55803	Set up workspace
CONTOUR INC	PB795248	Plumbing — Pipelaying Bond	2027-12-31	DULUTH	55803	Set up workspace
DESIGN HEATING LLC	PC715020	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55803	Set up workspace
FOSSUM PLUMBING & HEATING LLC	PC644376	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55811	Set up workspace
GREAT LAKES EXCAVATING INC	PB656321	Plumbing — Pipelaying Bond	2027-12-31	DULUTH	55803	Set up workspace
GUTHRIE PLUMBING & HEATING LLC	PC645288	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55811	Set up workspace
HARBOR MECHANICAL INCORPORATED	PC644764	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55804	Set up workspace
HIETALA PLUMBING & HEATING	PC668549	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55810	Set up workspace
HUMES PLUMBING & HEATING LLC	PC645007	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55803	Set up workspace
INTEGRITY MECHANICAL SERVICES LLC	PC779769	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55811	Set up workspace
JMF CONSTRUCTION INC	PB643276	Plumbing — Pipelaying Bond	2027-12-31	DULUTH	55803	Set up workspace
KALKBRENNER PLUMBING & HEATING INC	PC643700	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55808	Set up workspace
KASKI INC	PB741669	Plumbing — Pipelaying Bond	2027-12-31	DULUTH	55811	Set up workspace
KB PLUMBING & HEATING	PC648160	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55806	Set up workspace
KEVIN KANGAS	PB766021	Plumbing — Pipelaying Bond	2027-12-31	DULUTH	55803	Set up workspace
LEVINE AND SON INC	PR642813	Plumbing — Restricted Plumbing Contractor	2027-12-31	DULUTH	55804	Set up workspace
LOTTA HOT WATER	PC734073	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55804	Set up workspace
L & S PLUMBING & HEATING LLC	PC653521	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55811	Set up workspace
MAXX MECHANICAL LLC	PC150317	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55803	Set up workspace
MICKS PLUMBING LLC	PC802815	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55804	Set up workspace
MODERN MECHANICAL AND AUTOMATION LLC	PC772658	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55802	Set up workspace
MURPHS PLUMBING & HEATING LLC	PC000597	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55803	Set up workspace
NORTHERN STATES BASEMENT SYSTEMS INC	PR644780	Plumbing — Restricted Plumbing Contractor	2027-12-31	DULUTH	55803	Set up workspace
NORTHERN SUN PLUMBING & HEATING LLC	PC150309	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55803	Set up workspace
NORTH LAKES PLUMBING HEATING AND AIR LLC	PC751648	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55803	Set up workspace
Northland Constructors of Duluth	PB807108	Plumbing — Pipelaying Bond	2027-12-31	Duluth	55803	Set up workspace
NV SERVICES LLC	PB806219	Plumbing — Pipelaying Bond	2027-12-31	DULUTH	55803	Set up workspace
Outlaw Services LLC	PC150017	Plumbing — Plumbing Contractor	2027-12-31	Duluth	55804	Set up workspace
PLUMBING PRECISION INC	PC645540	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55810	Set up workspace
Polar Plumbing Heating & Air Inc	PC150226	Plumbing — Plumbing Contractor	2027-12-31	Duluth	55804	Set up workspace
PREMIER PLUMBING AND HEATING LLC	PC797003	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55811	Set up workspace
PRO SERVICE PLUMBING	PC802353	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55806	Set up workspace
RADIANT PLUMBING AND HEATING CO	PC150330	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55803	Set up workspace
RG BROWN PLUMBING & HEATING LLC	PC796230	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55803	Set up workspace
R J MEHRMAN & SONS INC	PC643446	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55804	Set up workspace
RN PLUMBING AND HEATING LLC	PC649369	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55804	Set up workspace
SHUBITZ PLUMBING & HEATING LLC	PC645569	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55806	Set up workspace
STONE PLUMBING AND HEATING INC	PC695195	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55803	Set up workspace
Streamline Plumbing and Heating	PC150320	Plumbing — Plumbing Contractor	2027-12-31	Duluth	55804	Set up workspace
SUNDLAND PLUMBING & HEATING LLC	PC002102	Plumbing — Plumbing Contractor	2027-12-31	DULUTH	55803	Set up workspace

Showing 1–50 of 54

Quick answers

How many plumbing contractors are in DULUTH?: 54 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.