Demo

HVAC Design Engineer

First Supply LLC
Green, WI Full Time
POSTED ON 6/4/2026
AVAILABLE BEFORE 7/2/2026
First Supply, a fifth-generation family-owned company, has served the Upper Midwest for over 125 years. Guided by our Employee Value Proposition, Where Tradition Meets Innovation, we foster a workplace where people learn, grow, and contribute to a company that values its heritage while embracing progress. Our teams take pride in supporting customers and communities, creating meaningful work and rewarding careers every day.

First Supply is seeking an exceptional HVAC Design Engineer to enhance our team of dedicated professionals. Do you have the ability to build relationships by having educational and informative conversations that promote our products while meeting our customers design needs?

As a HVAC Design Engineer with First Supply, you interact with customers to provide a Best-In-Class Customer Experience, design and submit plans for light commercial and residential applications and respond to HVAC related inquiries about product application, design and troubleshooting. Do you have patience, attentiveness, product knowledge, and the ability to communicate clearly in a results driven environment? Your hard work will be rewarded with competitive compensation, excellent benefits and opportunities for advancement. This role can be located anywhere within the northern region which the role supports. The northern region consists of: Green Bay, Appleton, Oshkosh, Sheboygan, Plover and Rhinelander.

If you meet the skills and qualifications below, we encourage you to take charge of your career and APPLY with First Supply TODAY!

Responsibilities

  • Input into the Auto Cad System HVAC system designs for light commercial and residential applications
  • Design and submit plans to the satisfaction of all state and local codes:
    • Perform heat loss calculation
    • Recommend equipment
    • Design duct & piping layout
  • Promptly answer telephone calls in a professional manner from customers
  • Quickly and effectively find creative ways to meet customers’ needs
  • Identify and propose solutions that benefit all parties involved; or escalate critical issues to the most appropriate personnel to handle the situation
  • Determine and set pricing on products and services as needed to respond to customer requirements while meeting First Supply LLC’s profit objectives
  • Recommend products and provide service to customers, based on customer’s specific needs
  • Provide accurate information regarding availability of in-stock items to customers; and recommend to Purchasing any stock level issues
  • Meet with customers when necessary to demonstrate and explain features of products; and instruct customers in use of products
  • Prepare and present quotations to meet needs of customer
  • For all orders, ensure that product is shipped in a timeframe to meet the customer’s needs
  • Obtain accurate information from vendors relating to shipment dates, expected date of delivery, etc for direct and special orders; and provide to customers to help build or maintain good working relationships
  • Gather competitive information from trends in the industry or marketplace and develop plans for opportunities or problem solving
  • Identify trends in customer satisfaction or dissatisfaction and make recommendations
  • Stay abreast of product developments, changes in local codes and consumer preferences; notify and advise appropriate management personnel; make recommendations and participate in any promotional updates that may be needed
  • Work closely with all company departments requesting design plans
  • Attend sales and product review meetings
  • Attend training programs maintain certifications as required
  • Keep records as required
  • Other duties/responsibilities as assigned by the Regional Sales Manager

Qualifications

  • 4 years’ of approved experience in specialized engineering design work. No more than 4 years may be equivalent academic training or apprenticeship as provided in Wis. Stats
  • 443.07(2):
    • Completion of technological academic training or apprenticeship program may be considered equivalent to experience but may not exceed a total of 4 years.
    • Graduation from a course other than engineering technology shall be equivalent to 2 years of experience
  • Extensive HVAC product and systems knowledge
  • Proficiency in CAD Designer or similar program; and excellent knowledge of drafting standards
  • Computer knowledge and skills with the ability to learn First Supply LLC’s business system
  • Ability to assess customer needs and provide customer satisfaction
  • Ability to communicate information and ideas effectively with customers by telephone and in person
  • Ability to identify solutions, conclusions or approaches to provide customer satisfaction; and still consider the relative costs and benefits to all involved

About First Supply

First Supply® is a leading main channel wholesale distributor, providing industrial customers and building contractors with an extensive line of products and services. We offer a wide range of manufacturer product lines across the plumbing, heating, air conditioning, builder, waterworks, pump/well & septic, industrial, and municipal markets. Headquartered in Madison, Wisconsin, First Supply has more than 700 employees across 29 operating facilities serving Wisconsin, Minnesota, Iowa, Illinois, and Michigan.

First Supply also owns and operates 18 Kitchen & Bath Stores across five Midwestern states under the Gerhard's Kitchen, Bath & Lighting and KOHLER® Signature Store by First Supply brands. Gerhard's is the largest, most versatile kitchen and bath store in the Upper Midwest, offering a wide variety of styles—from contemporary to traditional—along with unmatched service. The KOHLER Signature Stores are immersive kitchen and bath showrooms that provide a distinguished experience where designers and homeowners can get hands-on with hundreds of exclusive KOHLER products.

With a 128-year legacy and a people-first culture, First Supply is committed to building a workplace where employees feel valued, supported, and inspired to grow their careers. That commitment has earned national recognition, including a spot on USA Today’s 2024 Top Workplaces in the USA, as well as honors as a Woman-Led Top Workplace and an Industry Top Workplace for Distribution.

First Supply LLC is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, age, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.

Salary.com Estimation for HVAC Design Engineer in Green, WI
$56,881 to $76,747
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