How many hvac contractors are in Ortonville, MI?

27 with a current Michigan license, as of 2026-08-31.

How do I check a Michigan contractor license is current?

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

HVAC contractors in Ortonville, MI

27 listings

Source: Michigan LARA license records. Last verified 2026-08-31.

There are 27 hvac contractors in Ortonville, Michigan with a current state license as of 2026-08-31. The earliest license expiry among them is 2026-12-31; every listing shows its own number and expiry date. All are drawn from the Michigan LARA register; expired and inactive licenses are excluded.

Business	License	Type	Expires	City	Zip
A-1 INDOOR COMFORT SYSTEMS INC	7116898	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
BARBARA L WEISHAAR	7116939	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
CARGO, DON	7102314	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
CASIMIR R MLECZKO	7110102	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
C CAM ENERGY MANAGEMENT	315757	Boiler Installer	2026-12-31	Ortonville	48462	Set up workspace
CHRIS S JOHNSON	7117556	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
DOUGLAS F HALLETT	7117522	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
DYNAMIC HVAC INC	7115394	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
FORCIER HTG & CLG CORP	7111583	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
GAS TECH SERVICES	7112640	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
G DAVID GRAGER	7110862	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
Jacob Alan Martin	7119333	Mechanical Contractor	2029-08-31	Ortonville	48462	Set up workspace
JERRY HOBSON	7102096	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
KENNETH L CARPENTER	7104686	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
Mark J Venturino	7119917	Mechanical Contractor	2029-08-31	Ortonville	48462	Set up workspace
MATHISEN CO	316003	Boiler Installer	2026-12-31	Ortonville	48462	Set up workspace
MICHIGAN CONTRACTING INC	7105788	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
NORTHWEST HEATING & COOLING CO	315778	Boiler Installer	2026-12-31	Ortonville	48462	Set up workspace
NORTHWEST HTG & CLG CO INC	7110932	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
POSITIVE PLBG & HTG INC	7100110	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
POSITIVE PLUMBING & HEATING INC	313148	Boiler Installer	2026-12-31	Ortonville	48462	Set up workspace
RYAN A STREHLKE	7118181	Mechanical Contractor	2027-08-31	Ortonville	48462	Set up workspace
SUTTON & SONS MECHANICAL INC	7114003	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
THE AIR EXCHANGE CO	7109465	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
TIMS HEATING & CLG	7101802	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
VINCE GINGILOSKI	7115998	Mechanical Contractor	2028-08-31	Ortonville	48462	Set up workspace
WILLIAM P MATHISEN	7118923	Mechanical Contractor	2027-08-31	Ortonville	48462	Set up workspace

Quick answers

How many hvac contractors are in Ortonville?: 27 with a current Michigan 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 Michigan LARA licensee database.