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Plumbing License Minnesota: How to Become a Plumbing Contractor in MN

To become a plumbing contractor in Minnesota (MN), you will need to meet certain requirements and follow specific steps. Here’s an overview of what you need to do:

  1. Meet the eligibility criteria: To become a plumbing contractor in Minnesota, you must be at least 18 years old, possess a high school diploma or equivalent, and have at least four years of experience as a licensed plumber.
  2. Complete the required education and training: You will need to complete a minimum of 48 hours of classroom instruction and 4,000 hours of on-the-job training as a licensed plumber. The classroom instruction should cover topics such as plumbing codes, safety procedures, and business management.
  3. Obtain a plumbing contractor license: To obtain a plumbing contractor license in Minnesota, you will need to submit an application to the Minnesota Department of Labor and Industry, along with the required fee and supporting documents. These documents may include proof of education, training, and experience as a licensed plumber, as well as proof of liability insurance and a bond.
  4. Pass the required exams: You will need to pass two exams to become a plumbing contractor in Minnesota: the Minnesota Business and Law exam, and the Plumbing Contractor exam. These exams are designed to test your knowledge of plumbing codes, regulations, and business practices.
  5. Renew your license: Plumbing contractor licenses in Minnesota expire on March 1 of odd-numbered years. To renew your license, you will need to complete continuing education requirements and submit a renewal application along with the required fee.

In summary, to become a plumbing contractor in Minnesota, you will need to meet the eligibility criteria, complete the required education and training, obtain a plumbing contractor license, pass the required exams, and renew your license regularly.

Requirement to obtain Plumbing License in MN

To obtain a plumbing license in Minnesota, you must meet the following requirements:

  1. Be at least 18 years of age.
  2. Possess a high school diploma or equivalent.
  3. Have at least four years of experience as a licensed plumber or have completed an approved plumbing apprenticeship program.
  4. Complete the required education and training: You will need to complete a minimum of 48 hours of classroom instruction and 4,000 hours of on-the-job training as a licensed plumber. The classroom instruction should cover topics such as plumbing codes, safety procedures, and business management.
  5. Pass the required exams: You will need to pass two exams to become a licensed plumber in Minnesota: the Minnesota State Plumbing Code Exam and the Minnesota Plumbing License Exam. These exams are designed to test your knowledge of plumbing codes, regulations, and practices.
  6. Submit an application: You will need to submit an application to the Minnesota Department of Labor and Industry, along with the required fee and supporting documents. These documents may include proof of education, training, and experience as a licensed plumber, as well as proof of liability insurance and a bond.
  7. Renew your license: Plumbing licenses in Minnesota expire on March 1 of odd-numbered years. To renew your license, you will need to complete continuing education requirements and submit a renewal application along with the required fee.

In summary, to obtain a plumbing license in Minnesota, you will need to meet the eligibility criteria, complete the required education and training, pass the required exams, submit an application, and renew your license regularly.

Types of Plumbing Licenses in MN

In Minnesota, there are several types of plumbing licenses that you can obtain, depending on your level of experience and the scope of your work. Here are the main types of plumbing licenses in Minnesota:

  1. Journeyworker plumber: This license is for individuals who have completed a plumbing apprenticeship program and have at least four years of experience as a licensed plumber. A journeyworker plumber can perform all types of plumbing work, including installation, repair, and maintenance.
  2. Master plumber: This license is for individuals who have at least one year of experience as a journeyworker plumber and have passed the Minnesota Plumbing License Exam. A master plumber can perform all types of plumbing work, including installation, repair, and maintenance, and can also supervise other plumbers.
  3. Restricted master plumber: This license is for individuals who have at least one year of experience as a journeyworker plumber and have passed the Minnesota Plumbing License Exam, but are restricted in the types of plumbing work they can perform. A restricted master plumber can only perform plumbing work related to their specific area of expertise, such as water conditioning, irrigation, or medical gas piping.
  4. Plumbing contractor: This license is for individuals or businesses that provide plumbing services to the public. To obtain a plumbing contractor license, you must have at least four years of experience as a licensed plumber and pass both the Minnesota Business and Law Exam and the Plumbing Contractor Exam.

In summary, the main types of plumbing licenses in Minnesota are journeyworker plumber, master plumber, restricted master plumber, and plumbing contractor. Each license has specific requirements and restrictions, depending on the level of experience and scope of work.

Benefits of becoming an MN Plumbing Professional

Becoming a plumbing professional in Minnesota can offer numerous benefits, including:

Job security: Plumbing professionals are in high demand, and the need for skilled workers in this field is expected to grow in the coming years. This means that plumbing professionals can enjoy job security and stability.

Good pay: Plumbing professionals in Minnesota can earn a good salary, with the average hourly wage for plumbers in the state being around $33 per hour.

Career growth: There are many opportunities for career growth and advancement in the plumbing industry, including becoming a master plumber or a plumbing contractor.

Flexibility: Plumbing professionals can work in a variety of settings, including residential, commercial, and industrial. They can also choose to work for a plumbing company or start their own business.

Job satisfaction: Plumbing professionals can take pride in their work, knowing that they are providing an essential service to the community. They can also enjoy the satisfaction of solving complex problems and helping customers.

Independence: Plumbing professionals often have a high degree of independence in their work, allowing them to take ownership of their projects and make decisions based on their expertise.

In summary, becoming a plumbing professional in Minnesota can offer a variety of benefits, including job security, good pay, career growth, flexibility, job satisfaction, and independence.

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Mean Salary for a Plumbing Technician in MN

According to the U.S. Bureau of Labor Statistics (BLS), the mean hourly wage for plumbers, pipefitters, and steamfitters in Minnesota was $33.13 as of May 2020. This equates to a mean annual salary of approximately $68,870.

However, it’s important to note that the salary for a plumbing technician in Minnesota can vary based on factors such as level of experience, type of employer, and geographic location. For example, plumbers working in urban areas may earn higher wages than those in rural areas, and those with specialized skills or certifications may earn more than those without. Additionally, plumbing technicians who work for larger companies or in specialized industries may also earn higher salaries.

Overall, plumbing is a skilled trade that can provide a good income for those who are willing to put in the time and effort to develop their skills and build their career.

Cost to become a Plumbing Technician in MN

The cost to become a plumbing technician in Minnesota can vary depending on several factors, including your level of experience, the type of training you choose, and the cost of exams and licensing fees. Here are some of the main costs associated with becoming a plumbing technician in Minnesota:

  1. Education and training: To become a plumbing technician in Minnesota, you will need to complete a minimum of 48 hours of classroom instruction and 4,000 hours of on-the-job training as a licensed plumber. The cost of education and training can vary depending on the provider, but you can expect to pay several thousand dollars for the required courses and apprenticeship program.
  2. Exam fees: To become a licensed plumber in Minnesota, you will need to pass two exams: the Minnesota State Plumbing Code Exam and the Minnesota Plumbing License Exam. The cost of these exams is $85 each.
  3. Licensing fees: To obtain a plumbing license in Minnesota, you will need to submit an application to the Minnesota Department of Labor and Industry and pay a licensing fee. The fee for a journeyworker plumber license is $95, and the fee for a master plumber or plumbing contractor license is $250.
  4. Insurance and bond: To obtain a plumbing contractor license in Minnesota, you will also need to provide proof of liability insurance and a bond, which can cost several hundred to several thousand dollars per year, depending on the coverage amount.

Overall, the total cost to become a plumbing technician in Minnesota can range from several thousand to tens of thousands of dollars, depending on the level of education, training, and licensing required. However, it’s important to remember that this investment can pay off in the form of a rewarding and well-paying career in a growing industry.

How long does it take to become a Plumbing Technician in MN?

The time it takes to become a plumbing technician in Minnesota can vary depending on the individual’s education and training path. Here is a general timeline for becoming a plumbing technician in Minnesota:

  1. High school diploma or equivalent: Typically, it takes four years to earn a high school diploma or equivalent.
  2. Apprenticeship or training program: To become a licensed plumber in Minnesota, you will need to complete a minimum of 4,000 hours of on-the-job training as a licensed plumber, which typically takes about four years to complete.
  3. Classroom instruction: In addition to on-the-job training, you will need to complete a minimum of 48 hours of classroom instruction, which can be completed over the course of a few months to a year, depending on the provider and the schedule.
  4. Exam preparation and testing: Once you have completed the required education and training, you will need to prepare for and pass two exams: the Minnesota State Plumbing Code Exam and the Minnesota Plumbing License Exam. The preparation time can vary depending on the individual’s level of knowledge and experience, but the exams are typically offered several times per year.

Overall, it can take anywhere from four to eight years to become a plumbing technician in Minnesota, depending on the individual’s education and training path. However, some individuals may be able to complete their training more quickly or take longer, depending on their schedule and other factors.

MN Plumbing Training Programs and Schools

There are several plumbing training programs and schools in Minnesota that can help you prepare for a career as a plumbing technician. Here are some of the options:

  1. Minnesota State Colleges and Universities: Many of the colleges and universities in the Minnesota State system offer plumbing apprenticeship programs, which combine classroom instruction with on-the-job training. These programs typically take four years to complete and are available at locations throughout the state.
  2. Minnesota Plumbing Apprenticeship Program: This program is administered by the Minnesota Pipe Trades Association and offers a comprehensive training program for aspiring plumbing technicians. The program includes 8,000 hours of on-the-job training and 720 hours of classroom instruction over the course of five years.
  3. Associated Builders and Contractors of Minnesota and North Dakota: This organization offers a plumbing apprenticeship program that includes 8,000 hours of on-the-job training and 576 hours of classroom instruction over the course of five years.
  4. Plumbing Contractor License Exam Prep Course: Many training providers in Minnesota offer exam preparation courses for individuals who are preparing to take the Plumbing Contractor Exam. These courses typically cover plumbing codes, regulations, and business practices.
  5. Minnesota Mechanical Contractors Association: This organization offers a variety of training and education programs for plumbing contractors and technicians, including apprenticeship programs, continuing education courses, and safety training.

Overall, there are many options for plumbing training programs and schools in Minnesota, ranging from apprenticeship programs to exam preparation courses. It’s important to research and compare the different options to find the program that best meets your needs and goals.

MN Plumbing Licensing Exam Details and EPA Certification

  1. Minnesota Plumbing License Exam: The Minnesota Plumbing License Exam is a computer-based exam that covers topics such as plumbing codes, regulations, and practices. The exam is administered by PSI Services LLC and consists of 100 multiple-choice questions. You will have four hours to complete the exam, and a passing score is 70%. The exam fee is $85.
  2. Minnesota State Plumbing Code Exam: The Minnesota State Plumbing Code Exam is another computer-based exam that covers the state’s plumbing code and related regulations. This exam is also administered by PSI Services LLC and consists of 50 multiple-choice questions. You will have two hours to complete the exam, and a passing score is 70%. The exam fee is $85.
  3. EPA Certification: In addition to obtaining a plumbing license in Minnesota, you may also need to obtain Environmental Protection Agency (EPA) certification if you work with refrigerants or air conditioning systems. The EPA certification exam covers topics such as refrigerant handling, recovery, and recycling. The exam fee is $120, and certification is valid for two years.

Overall, the licensing exams in Minnesota are designed to test your knowledge of plumbing codes, regulations, and practices. It’s important to prepare for these exams by studying the relevant materials and taking practice tests. Additionally, if you work with refrigerants or air conditioning systems, you may need to obtain EPA certification to comply with federal regulations.

Core Exam details in MN for Plumbing Professional

The Core Exam, also known as the Minnesota Business and Law Exam, is a required exam for individuals who want to obtain a plumbing contractor license in Minnesota. This exam is designed to test your knowledge of business management and law as it relates to the plumbing industry. Here are some details about the exam:

  1. Exam content: The Core Exam covers topics such as business management, labor laws, tax laws, insurance requirements, and safety regulations. The exam consists of 50 multiple-choice questions and you will have two hours to complete it. A passing score is 70%.
  2. Exam format: The Core Exam is a computer-based exam that is administered by PSI Services LLC. You can take the exam at one of their testing centers, which are located throughout Minnesota.
  3. Exam fee: The exam fee for the Core Exam is $85. You will need to pay this fee when you register for the exam.
  4. Study materials: To prepare for the Core Exam, you can use the Candidate Information Bulletin provided by PSI Services LLC, which outlines the exam content and provides study resources. You can also use study guides and practice tests offered by training providers and industry organizations.
  5. Exam scheduling: You can schedule your Core Exam appointment through PSI Services LLC’s website or by phone. You will need to provide your personal information and pay the exam fee at the time of scheduling.

Overall, the Core Exam is an important requirement for individuals who want to obtain a plumbing contractor license in Minnesota. It’s important to study the relevant materials and take practice tests to prepare for the exam and increase your chances of passing.

Obtain Insurance For Plumbing License in MN


In Minnesota, plumbing contractors are required to carry liability insurance and a bond to obtain and maintain their license. Liability insurance protects the contractor in the event of accidents or damages that may occur during plumbing work, while the bond provides financial protection for customers in case of fraud or other misconduct by the contractor.

Here’s how to obtain insurance for a plumbing license in Minnesota:

  1. Contact an insurance provider: There are many insurance providers in Minnesota that offer liability insurance and bonds for plumbing contractors. You can research and compare different providers to find one that offers the coverage and rates that meet your needs.
  2. Provide documentation: To obtain liability insurance and a bond, you will need to provide documentation such as your plumbing license, proof of insurance, and financial information.
  3. Pay the premium: You will need to pay a premium for the insurance and bond, which can vary depending on factors such as the amount of coverage, your level of experience, and the type of work you will be doing.
  4. Renew your coverage: Liability insurance and bonds must be renewed regularly to maintain your plumbing contractor license. Be sure to keep your coverage up to date to avoid any lapses in your license.

Overall, obtaining insurance for a plumbing license in Minnesota is an important step in protecting yourself and your customers during plumbing work. Be sure to research and compare different providers to find the best coverage and rates for your needs.

Who issues Plumbing Licenses in MN?

Plumbing licenses in Minnesota are issued by the Minnesota Department of Labor and Industry (DLI). The DLI is responsible for regulating the plumbing industry in the state and ensuring that plumbing professionals meet the required standards of knowledge and experience.

To obtain a plumbing license in Minnesota, you will need to submit an application to the DLI, along with the required fees and supporting documents. The DLI will review your application and verify that you meet the eligibility requirements, including completing the required education and training, passing the required exams, and obtaining liability insurance and a bond.

Once your application has been approved, the DLI will issue your plumbing license, which will include information such as your name, license number, and expiration date. You will need to renew your license regularly to maintain your status as a licensed plumber in Minnesota.

Overall, the DLI plays a crucial role in regulating the plumbing industry in Minnesota and ensuring that plumbing professionals meet the required standards of knowledge and experience.

Does my MN registration allow me to work in any other state?

No, your plumbing registration or license in Minnesota does not automatically allow you to work in other states. Plumbing licensing requirements and regulations vary by state, so you would need to obtain a license in each state where you plan to work.

However, some states have reciprocity agreements with Minnesota that allow licensed plumbers in one state to obtain a license in another state without having to meet all of the usual requirements. Reciprocity agreements typically require that the licensing requirements in both states are similar or comparable.

If you are interested in working as a plumber in another state, you should research the licensing requirements in that state and determine if there are any reciprocity agreements that apply to Minnesota licensed plumbers. You may need to complete additional education, training, or testing to obtain a license in the other state.

National Plumbing Certifications

There are several national plumbing certifications that are recognized in the United States. These certifications are voluntary and are offered by industry organizations to demonstrate a plumber’s knowledge and expertise in a specific area of plumbing. Here are some of the most common national plumbing certifications:

  1. Certified Plumbing Design (CPD): This certification is offered by the American Society of Plumbing Engineers (ASPE) and is designed for plumbing engineers and designers. The CPD certification demonstrates a professional’s knowledge and expertise in the design of plumbing systems.
  2. Green Plumbers USA: This certification program is offered by Green Plumbers USA and is designed to train and certify plumbers in sustainable plumbing practices. The program covers topics such as water conservation, energy efficiency, and environmental protection.
  3. Journeyman Plumber Certification: The National Inspection Testing and Certification Corporation (NITC) offers a journeyman plumber certification program that is recognized in many states. The program includes both a written exam and a practical exam to test a plumber’s knowledge and skills in plumbing installation, repair, and maintenance.
  4. Certified Plumbing Inspector (CPI): This certification is offered by the International Association of Plumbing and Mechanical Officials (IAPMO) and is designed for plumbing inspectors. The CPI certification demonstrates a professional’s knowledge and expertise in plumbing codes, regulations, and inspection procedures.
  5. Master Plumber Certification: The National Association of Plumbing-Heating-Cooling Contractors (NAPHCC) offers a master plumber certification program that is recognized in many states. The program includes both a written exam and a practical exam to test a plumber’s knowledge and skills in plumbing installation, repair, and maintenance.

Overall, national plumbing certifications can be a valuable addition to a plumber’s resume, demonstrating their knowledge and expertise in a specific area of plumbing. It’s important to research and compare different certification programs to find one that meets your needs and goals as a plumbing professional.

Continuing Education and Renewal of MN License for Plumbing

In Minnesota, plumbing licenses must be renewed every two years. To renew your plumbing license, you must complete continuing education requirements and submit a renewal application to the Minnesota Department of Labor and Industry (DLI).

Here’s what you need to know about continuing education and renewal of a plumbing license in Minnesota:

  1. Continuing education requirements: To renew your plumbing license in Minnesota, you must complete 16 hours of continuing education every two years. The continuing education must be approved by the DLI and cover topics such as plumbing codes, safety, and business management.
  2. Renewal application: You can renew your plumbing license online or by mail using the renewal application provided by the DLI. The application will require you to provide your personal and professional information, as well as proof of completion of continuing education.
  3. Renewal fee: You will need to pay a renewal fee when you submit your renewal application. The fee varies depending on the type of license you hold.
  4. Late renewal: If you do not renew your plumbing license by the expiration date, you will need to pay a late renewal fee in addition to the regular renewal fee.

Overall, it’s important to stay up to date with the continuing education requirements and renewal deadlines to maintain your plumbing license in Minnesota. Failing to renew your license can result in penalties, fines, and even the loss of your license.

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