Energy-Efficient Heating & Cooling Services
At Green Homeowners United, we help Wisconsin homeowners upgrade their heating and cooling systems with energy-efficient solutions designed to reduce your carbon footprint and your monthly bills.
Why Choose Energy-Efficient HVAC?
Heating and cooling account for the largest portion of your home’s energy use. That means upgrading your system can lead to serious savings. Whether you're replacing an outdated furnace or looking for a greener way to cool your home, our expert team can help you find a solution that fits your needs and your budget.
JoAnn from Milwaukee replaced a gas heating system with a ductless "mini-split" heat pump to heat and cool her 2nd floor, after first air sealing and insulating.
Heat Pumps: The Future of Heating and Cooling
An "air-source heat pump" may look like a large central-air conditioner, but this system can do so much more!
Ditch the gas. Go electric with a heat pump. Heat pumps are one of the most efficient ways to heat and cool your home. Instead of burning fossil fuels, they move heat using electricity and compressed refrigerant—making them 200–300% efficient compared to even the best gas furnaces.
Types of Heat Pumps:
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Air Source Heat Pumps – Replace your central A/C and provide year-round comfort.
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Mini-Split Heat Pumps – Ideal for heating and cooling specific rooms or zones.
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Dual-Fuel Heat Pumps – Combine your furnace with a heat pump for the best of both worlds in cold climates like Wisconsin.
High-Efficiency Furnaces, Boilers & Air Conditioners
Still using natural gas? We can help you upgrade to a high-efficiency furnace or boiler with AFUE ratings of 96% or higher. Plus, we offer ENERGY STAR®-certified air conditioners with SEER ratings of 16 or more for maximum cooling efficiency.
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Our systems also include:
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ECM motors for lower electric bills
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Sealed combustion for improved safety
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Smart thermostat compatibility
High efficiency sealed combustion boiler (left) and furnace (right)
Duct & Pipe Sealing and Insulation
Even the most efficient HVAC system can’t perform well with leaky ducts or uninsulated pipes.
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Duct Sealing
Stop wasting energy by sealing ductwork with professional-grade mastic or mastic tape. This prevents air loss, balances airflow, and reduces pressure on your system.
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Duct Insulation
If your ducts run through unconditioned spaces like attics, crawlspaces, or basements, adding insulation can prevent heat loss and save you money.
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Boiler Pipe Insulation
Don’t let hot water lose heat before it reaches your radiators. Wrapping your boiler pipes can improve system performance and reduce wasted energy.
Duct sealed with mastic
Before and after of leaky ductwork in an unheated space wasting money
Smart Thermostats
Take control of your home comfort and your bills. Smart thermostats help you automate heating and cooling, learn your habits, and save energy when you’re not home. Many models offer features like:
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Remote control via app
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Geofencing for automatic temperature adjustments
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Energy usage reports
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Integration with smart home devices
Rebates available when installed by a pro!
Ecobee brand smart thermostat next to a ductless minisplit
heat pump control
ECM Furnace Fan Motors
If you’re using an older furnace, you may be paying too much on your electric bill. Electronically Commutated Motors (ECMs) are ultra-efficient upgrades for your furnace fan, saving energy and providing more consistent comfort.
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Retrofit-ready
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Lower energy use
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Quieter operation
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HVAC Zoning Systems
Tired of hot and cold spots throughout your home? Zoning lets you control different areas independently, reducing energy waste and keeping every room comfortable.
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Great for:
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Multi-level homes
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Additions or finished basements
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Customizing comfort for family members
Whether you're interested in switching to a heat pump, upgrading your HVAC system, or simply improving your ductwork, Green Homeowners United is here to help Milwaukee-area homeowners find the best energy-efficient solution.
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Book Your Energy Consultation Today