How to Start an HVAC Business in Minnesota (2026)

Last updated: February 25, 2026

Starting an HVAC business in Minnesota is unique because there is no state-level HVAC license. Instead, Minnesota requires a $25,000 mechanical contractor bond filed with the Department of Labor and Industry (DLI), while individual licensing is handled by local cities like Minneapolis and St. Paul. You’ll need a journeyman or master mechanical installer competency card from the city where you operate, plus EPA Section 608 certification for refrigerant handling. Minneapolis and St. Paul have a reciprocal agreement – certification in one city transfers to the other without retesting. Mechanical permits are required for virtually all HVAC installations under the Minnesota State Building Code. This guide covers every requirement from official state and city sources.

HVAC Requirements in Minnesota at a Glance

Requirement	Agency	Cost	Timeline
LLC Formation	Secretary of State	$155 (online)	3-5 business days
Mechanical Contractor Bond	DLI	$25,000 bond + $100 filing fee	2-year term
Journeyman Competency Card	City (e.g., Minneapolis)	$55 exam + $280 trade license	4 years experience required
Master Competency Card	City (e.g., Minneapolis)	$82.50 exam + $280 trade license	5 years experience required
EPA Section 608 Certification	EPA-approved provider	$10-$120	Lifetime (no renewal)
Workers’ Compensation Insurance	DLI (private carriers)	Varies by payroll	Before hiring employees
General Liability Insurance	Private Carrier	$100K-$500K minimum (by city)	Before obtaining trade license

How to Start an HVAC Business in Minnesota (Step by Step)

Step 1: Get Your Experience and Competency Cards

Since Minnesota doesn’t have a state HVAC license, individual credentials are issued by cities. The typical path:

Journeyman Mechanical Installer

• 4 years of trade-related training or on-the-job experience
• Minimum 576 hours of classroom education
• Pass the city-administered journeyman exam
• Exam application: $55 (Minneapolis/St. Paul)

Master Mechanical Installer

• Must first hold a journeyman competency card
• 1 additional year as a licensed journeyman (5 years total)
• Pass the master exam
• Exam application: $82.50 (Minneapolis/St. Paul)
• Required to pull permits and supervise work

Minneapolis-St. Paul reciprocity: Certification in one city allows obtaining certification in the other without retesting.

Step 2: Get EPA Section 608 Certification

Federal law requires EPA Section 608 certification for any technician who services, maintains, or disposes of equipment containing refrigerants. Get Universal certification to cover all equipment types:

Type	Covers	Examples
Type I	Small appliances (5 lbs or less)	Window AC units, refrigerators
Type II	High/very-high pressure	Residential AC, heat pumps
Type III	Low-pressure	Centrifugal chillers
Universal	All types	Recommended for HVAC contractors

Cost: $10-$120 depending on provider. Certification is lifetime (no renewal). 2026 exams now include questions on A2L mildly flammable refrigerants (R-454B, R-32) and HFC phasedown under the AIM Act.

Step 3: Form Your Business Entity

Register an LLC with the Minnesota Secretary of State ($155 online, free annual renewal). Apply for a free federal EIN from the IRS. Register for a Minnesota Tax ID with the Department of Revenue.

Step 4: File Your Mechanical Contractor Bond

All HVAC contractors in Minnesota must file a $25,000 surety bond with the Department of Labor and Industry (DLI):

• Bond amount: $25,000
• Filing fee: $100 (valid for 2 years)
• Must be written by a surety company licensed in Minnesota
• Must use the DLI-approved form
• File online at mn.gov/elicense or by mail
• Renewal: $100 every 2 years

Step 5: Get City Trade Licenses

HVAC trade licenses are issued by individual cities. You need a license in each city where you perform work.

Minneapolis

• Class A HVAC License: Install, repair, and clean HVAC systems – $280 + $135 processing fee
• Class B HVAC License: Clean only – $280 + $135 processing fee
• Class A requires the state $25,000 DLI bond
• Class B requires a city $10,000 bond
• Insurance required: $100,000 per occurrence / $300,000 aggregate
• Apply at Minneapolis Business Licenses

St. Paul

• Warm Air License: Heating appliance and duct installation – $188/year
• Ventilation License: Air supply/removal equipment – $188/year
• Licenses expire December 1st annually
• Insurance required: $500,000 combined single limit
• Apply at St. Paul Safety and Inspections

Step 6: Get Insurance and Start Operating

General liability insurance minimums vary by city: Minneapolis requires $100,000/$300,000; St. Paul requires $500,000 combined; St. Cloud requires $100,000/$500,000/$250,000. Workers’ compensation is mandatory for all employers. Commercial auto insurance is required for service vehicles.

Mechanical permits are required for virtually all HVAC installations under the Minnesota State Building Code (Chapter 1346). Permits are pulled at the local city or county building department. The licensed contractor pulls the permit, and on-site inspections are required.

Cost to Start an HVAC Business in Minnesota

Item	Cost	Notes
LLC Formation	$155	One-time (online), free annual renewal
DLI Mechanical Contractor Bond	$25,000 bond + $100 filing	Bond premium: ~$250-$1,250/year
EPA 608 Universal Certification	$10-$120	Lifetime, no renewal
City Trade License (Minneapolis)	$280 + $135 processing	Per city, annual renewal
Journeyman/Master Exam	$55-$82.50	Per exam application
General Liability Insurance	$1,500-$5,000/year	Minimums vary by city
Workers’ Comp Insurance	Varies by payroll	Mandatory for employees
Commercial Auto Insurance	$1,200-$3,000/year	Service vehicle(s)
Tools & Equipment	$5,000-$20,000	Gauges, recovery equipment, tools
Service Vehicle	$25,000-$50,000	New van/truck (used: $10,000-$25,000)

Estimated total startup cost: $35,000-$80,000 (including vehicle; $15,000-$35,000 without new vehicle)

Related Minnesota Business Guides

• How to Start a Cleaning Service in Minnesota
• How to Start a Food Truck in Minnesota
• How to Start a Daycare in Minnesota
• How to Start a Hair Salon in Minnesota
• How to Start a Landscaping Business in Minnesota
• How to Start a Private Investigation Business in Minnesota

← Back to all Minnesota business guides

Frequently Asked Questions

Is there a state HVAC license in Minnesota?

No. Minnesota does not have a state-level HVAC license. Instead, the state requires a $25,000 mechanical contractor bond filed with DLI ($100 filing fee), while individual competency cards and trade licenses are issued by local cities.

What experience do I need to start an HVAC business in Minnesota?

You need a journeyman competency card (4 years experience + 576 hours classroom + exam) from your local city, or a master card (5 years total + exam) to pull permits and supervise. Plus EPA Section 608 Universal certification for refrigerant work.

Do Minneapolis and St. Paul HVAC licenses transfer?

Yes. Minneapolis and St. Paul have a reciprocal agreement – certification in one city allows obtaining certification in the other without retesting. Other cities may have separate requirements.

What is the mechanical contractor bond?

A $25,000 surety bond required by DLI for anyone contracting to perform gas, heating, ventilation, cooling, air conditioning, or refrigeration work. Filing fee is $100 for a 2-year term. The actual bond premium depends on your credit and financials (typically $250-$1,250/year).

Do I need a mechanical permit for HVAC work in Minnesota?

Yes. The Minnesota State Building Code requires mechanical permits for furnace installation/replacement, AC installation, ductwork, gas piping, and most other HVAC work. Permits are pulled at the local building department, and inspections are required.

How much does it cost to start an HVAC business in Minnesota?

Total startup costs range from $35,000-$80,000 including a service vehicle, or $15,000-$35,000 without. Major costs include the $25,000 bond, city licenses ($280-$415), insurance ($1,500-$5,000/year), tools ($5,000-$20,000), and vehicle.