About Green Homeowners United
​Leading the Way in Sustainable Home Improvements
At Green Homeowners United, our mission is to make energy-efficient home upgrades accessible for all Wisconsin homeowners. We believe that improving homes with sustainable, eco-friendly solutions is essential to fighting climate change, reducing utility bills, and creating a more resilient future for everyone.
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Our vision is to see every Wisconsin home, no matter its age or location, powered by clean, efficient energy, contributing to a sustainable, low-carbon future. We’re committed to helping homeowners save money, reduce emissions, and access fair financing for the upgrades they need.
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We pride ourselves on our core values of sustainability, equity, and community impact. We aim to make green home improvements accessible to everyone, particularly in underserved areas, by providing clear guidance on available rebates, tax credits, and financing options. As a union-backed company, we’re also dedicated to fair wages, job training, and supporting the local workforce. Every home we improve and every job we create strengthens our shared future and the communities we serve.
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Meet the Green Homeowners United Team: Your Partners in Energy Efficiency and Eco-Friendly Home Upgrades
Sadie Tuescher
President​
Sadie is the President and co-founder of Green Homeowners United. As a green homeowner herself, Sadie has focused on sustainable and fair-sourced practices in the home as well as in business. Sadie is an entrepreneur who has helped launch multiple companies, helped numerous nonprofits. She is also involved with local small business organizations in the Greater Milwaukee area.​​​​
Kevin Kane
Chief Economist​
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Kevin is the Chief Economist and co-founder of Green Homeowners United. Kevin works with lenders, realtors and homeowners to navigate and understand the benefits of green homes, and green mortgages specifically. Kevin calculates the carbon impact, costs and economic returns of energy efficiency improvements, and financial calculations of green lending. He worked for over a decade as a community organizer and policy advocate, has helped found cooperative organizations.
Additionally, Kevin is a BPI-certified energy assessor and has a Masters in Applied Economics from Marquette University.​​
Tyler Tuescher
Chief Energy Assessor​
Tyler is a certified BPI Building Analyst and founding board member for Green Homeowners United. Tyler specializes in on-the-ground energy assessments of residential homes, modeling energy saving opportunities, and creating individual solutions to improve homes' energy performances. He also provides training to staff on building design principles and for those working toward their certification. Tyler is also an accomplished hand tool woodworker.​
Contact info:
Mary Fenner
Operations Manager​
Mary is often the face and voice of Green Homeowners United. Mary specializes in connecting with people and ensuring positive customer experiences. She comes with experience in several industries before seizing the opportunity to join the Green Homeowners United team. Mary enjoys spending time with friends and family.​
Harrison Phillips
Installation Manager
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Harrison is a specialist in residential energy efficiency upgrade installation, having joined the team in early 2022. He is also DOA Home Energy Score certified assessor, certified lead abatement supervisor and an EMT. Harrison is a team leader and trains new team members out in the field. In his free time, Harrison is a DJ and plays baseball.
Jack Phillips
Project Manager​
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Jack is a DOA Home Energy Score certified assessor, certified lead abatement supervisor, and specialist in residential energy efficiency upgrade installations. He joined the team in early 2022 and now performs Energy Assessments and is a team leader in the field. Jack enjoys fishing and is an accomplished pottery teacher.
Dan Fenner
Project Manager
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Dan joined the team in February 2023 and helps people navigate through the PSC grant application. Dan also helps with home visits and rebate applications for folks. In his free time Dan enjoys skiing, fishing, playing pool, Formula 1 racing and comedy.​​
Warren Kirby
Insulation Team Lead​
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Warren joined the team in September 2023 after completing an internship at Green Homeowners United through Employ Milwaukee's Healthy Homes training program. He comes with years of experience in rough carpentry and is a certified lead abatement worker. Warren enjoys gaming and playing basketball during his free time.
Josh Holland
Insulation & Air Sealing Specialist
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Josh is an experienced carpenter and has worked in residential construction. Josh previously worked with Green Homeowners and returns with experience in all aspects of home energy efficiency installation. He enjoys playing basketball and spending time with his kids.
Whytwan Versey
Insulation & Air Sealing Specialist
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Twan is a graduate of the Employ Milwaukee's Healthy Homes program and is a lead abatement certified worker. He played semi-pro football for 16 years and now is a passionate coach of youth flag football. Twan also has experience in home painting and roofing work. He is excited to learn more about home energy efficiency and grow his skills.
April Hartman
Project Administrator
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April joined the Green Homeowners United team in November 2024, having worked for many years in Milwaukee as an attorney advocating for affordable, sustainable housing and community development. In her new role as a project administrator, April helps Green Homeowners United obtain grants and rebates for clients so they can benefit from energy efficient home improvements. When she’s not working, April enjoys spending time with her kids and friends and family, reading, and being outside.
Steven Staton
Residential Energy & Air Sealing Specialist​
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Steven joined the team as Materials Coordinator in July 2024 and assists the teams with making sure job materials are ready and organized. He's a skilled landscaper and football coach. Steven enjoys helping others. Most importantly, Steven likes to spend time with his wife and daughters.
Andrew Lee
Energy Assessor - La Crosse
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Andrew Lee joins Green Homeowners United as an Energy Assessor. With a background in carpentry in both residential and commercial construction, Andrew is passionate about helping every one of his customers by providing quality work. Outside of work, Andrew enjoys making and performing music in the Minneapolis metro, continuing his education, and traveling nationally and worldwide.
Kevin Kadrmas
Energy Assessor - La Crosse
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Kevin Kadrmas joins Green Homeowners United as an Energy Assessor. With a background in civil engineering and small business owner, Kadrmas is passionate about helping the community and low income homeowners improve their homes - owners and especially renters. Outside of work, Kadrmas enjoys golf, fly fishing for trout, kayaking the Mississippi, and walking the dog.
Michael Monroe
Residential Master Electrician
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Michael joined the Green Homeowners United team in April 2025 to provide electrical service panel upgrades for the HEAR program. Bringing years of experience, Michael's primary focus is safety and capacity upgrades for eligible homes.​
Contact info:
Brandon Pinion
Account Manager​
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Brandon brings expertise in digital marketing, web design, and business administration, with a strong background in logistics, inventory control, and process optimization from over a decade of military and civilian experience. In his role at Green Homeowners United, Brandon provides administrative support, verification of client income eligibility, and advising digital marketing and website development strategies in spare work time. Brandon is passionate about storytelling and world-building, and is still actively engaged in entrepreneurial ventures in affiliate marketing and streetwear fashion.
Jeremiah Perkins
Insulation Team Lead​
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Tyree Garrett
Insulation & Air Sealing Specialist
Sonja Chojnacki
Program Strategist
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Sonja Chojnacki (she/her/ella) joins Green Homeowners United as a Program Strategist. She first began her green journey in 2010 by blowing insulation into her own home with the help of friends, and has since continued energy-saving improvements in her rental properties. With over a decade of experience in program management, compliance, and operations, Sonja brings a strong background in building efficient systems to support lasting impact. Her life’s work is centered on helping underserved communities access resources and opportunities. Outside of GHU, Sonja serves on the board of Nia Imani Family, runs a consulting firm, and enjoys exploring new places.
Tameka Katherine
Administrative Assistant
Hermione Zamzow
Executive Assistant
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Hermione joined the Green Homeowners United team in June 2025, bringing experience in event planning, customer service, and accounts. Hermione served as Event Coordinator for the company's IRA One Year Anniversary Celebration (and did an amazing job!). Hermione is earning a degree in Fashion Design at Mount Mary University. She continues to work with Green Homeowners United as Executive Assistant to the President.
Alex Schulz
Electrician Assistant
Andy Thompson
Electrician Assistant
Peris Conners
Materials Coordinator
Kestutis Kelecius
Insulation & Air Sealing Specialist
​Claire Hoffman
Accountant
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​Claire Hoffman joins Green Homeowners United as an Accountant. With cross industry experience in finance and accounting she is excited to be a part of this organization that helps homeowners save money on energy bills, while at the same time cutting carbon emissions. In her free time, Claire enjoys spending time with her family and friends and 2 dogs and spending time outside exploring new places.
Partners and Allies in Sustainable Home Improvements
Grant Park Heating and Cooling
Nicholas Hansen
Nicholas Hansen owns Grant Park Heating & Cooling, a residential HVAC company with expertise in Heat Pumps and Electrification. Nicholas entered the HVAC Trade as a Service Technician in 2014. During his career, he found that the HVAC industry is historically very wasteful and there was (and still is) much reluctance within the industry to adapt to more sustainable practices.
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Realizing that the greater majority of HVAC systems in homes today can be replaced with more climate-friendly equipment, Nicholas decided to start his own company. He received his HVAC Qualifier from the Wisconsin Department of Safety and Professional Services in July of 2021 and his company has been installing highly efficient heat pumps; furnaces and boilers ever since.
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EcoBalance Technologies LLC
Victor Niño
Victor G. Niño, PE brings over two decades of HVAC industry experience, bolstered by a Ph.D. in Mechanical Engineering and an MBA, to his leadership roles as the Director of Business Development at Build Equinox and the Founder of EcoBalance Technologies. His dual roles allow him to apply his expertise in promoting sustainable technologies, transforming both residential and commercial building markets towards a healthier and greener future.
Contractor Partners Serving SE Wisconsin
Revitalize Milwaukee
Revitalize Milwaukee is a non-profit 501(c)3 organization committed to environmental, social, and economic equity. Serving Milwaukee and Waukesha, Revitalize offers a variety of services to low to moderate income homeowners, including home repairs and energy efficiency upgrades and services.
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Green Homeowners United Affiliations
Green Homeowners United has multiple BPI certified Building Analysts on staff. BPI sets the standards for training and supporting energy assessors around the country, especially with a focus on existing building improvements.
Building Analyst Professionals & Healthy Home Evaluators
Focus on Energy brings together utilities from across the state to coordinate energy efficiency and renewable projects for new construction and existing homes. From educational events to providing instant rebates on insulation, HVAC and lighting.
Green Homeowners United is a proud Focus on Energy Trade Ally.
Trade Ally
Union Contractor
Most residential contractors and employees are not affiliated with a union. As a consequence most residential construction workers have lower wages, lower benefits and higher injury rate. Green Homeowners United is proud to be affiliated with the Laborers Union (LiUNA) and raising the bar for residential construction careers. To turn energy efficiency jobs that are so vital to protecting the planet into real family supporting careers.
The US Department of Energy's Home Energy Score program, which ranks homes' 1-10 on the assets of the building for its overall energy efficiency level, is one of the most widely used energy efficiency rating systems nationwide.
Certified Assessors
The Citizens Utility Board of Wisconsin advocates for all small utility customers for fair, safe and reliable utility service. They monitor the changing energy world and put the utility customer first. CUB advocates tirelessly for WI’s small businesses and residential utility customers at the Public Service Commission, the state Capitol, in the courts, and at regulatory agencies.
Small Business Member
WSBC is a non-profit organization helping businesses advance sustainability through programs, resources, educational events, seminars, and more. WSBC's goal is to establish Wisconsin as a destination for sustainable businesses and help to mention, recognize and support businesses as they grow.
WSBC's tenants are systems thinking, collaboration, continuous improvement, innovation, resiliency, environmental and human health, and diversity and inclusion.
Member
Common Ground is a non-partisan group of ordinary citizens of Southeast Wisconsin, dedicated to identifying problems facing our community and implementing creative solutions. Our success is based on the commitment of more than forty congregations, schools, small businesses, neighborhood groups and other organizations to address local and national issues. Our 40,000 members live and work in the counties of Milwaukee, Ozaukee, Washington and Waukesha, and our diversity - geographic, racial, social and political - is the source of our strength.
Member Institution
The Midwest Renewable Energy Association promotes renewable energy, energy efficiency, and sustainable living through education and demonstration. Together with partners around the Midwest, MREA works to expand renewable energy adoption through innovative programs, renewable energy training, and educational events.
Small Business Member
Milwaukee's Environmental Collaboration Office (ECO) operates the "Me2 Program" (Milwaukee Energy Efficiency), which provides access to affordable energy financing to City residents. All Me2 participating contractors have agreed to hire local workers on your project, and are Trade Allies in the Focus on Energy program . Learn more on the Me2 website, including a video featuring Green Homeowners United!
Me2 Approved Full Service Contractor
Citizen Action of Wisconsin is dedicated to economic, racial, and environmental justice, and achieving a Wisconsin and an America where every human being has an equal opportunity to live a meaningful and fulfilling life.
Board Member (Kevin Kane)