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In Business Since 2018 

Estimates Available Within 24 Hours 

24/7 Emergency Service

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Geothermal Heating and Cooling
Milford, CT

In Business Since 2018 

Estimates Available Within 24 Hours 

24/7 Emergency Service

Request Lorem Epsom

Hero Request Form

Harness the Earth's Natural Energy for Year-Round Comfort
Onofreo Home Comfort Systems LLC brings advanced geothermal heating and cooling solutions to homes and businesses in Milford, CT. Our family-owned company combines over three decades of HVAC experience with cutting-edge renewable energy technology to deliver consistent, efficient climate control that reduces your environmental footprint while lowering energy costs.

Serving Fairfield, North Haven, and the surrounding Shoreline areas, we are a woman-owned and minority-owned business committed to comfort without compromise. Our NATE-certified technicians provide same-day service and 24/7 emergency support when you need it most. Ready to explore sustainable heating and cooling? Contact us today.

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Why Choose Us

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24/7 Emergency Service

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30+ Years Experience

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NATE-Certified

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Estimates Available Within 24 Hours

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Financing Options Available

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Free Estimates for New Installations

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Onofreo Home Comfort Systems LLC
Geothermal Heating and Cooling Installation
Our installation team designs and implements complete geothermal systems tailored to your property's unique characteristics and energy requirements. We handle everything from initial site assessment and loop field installation to indoor equipment setup, ensuring your system operates at peak efficiency from day one with our two-year labor warranty backing every installation.
Geothermal Retrofitting
Transitioning your existing HVAC system to geothermal technology doesn't require starting from scratch. Our retrofitting services integrate geothermal heat pumps with your current ductwork and infrastructure, maximizing your investment while upgrading to renewable energy with minimal disruption to your home or business.
Heat Pump Installation
As a Mitsubishi Diamond Dealer, we install high-performance geothermal heat pumps engineered for superior heating and cooling efficiency. These systems extract stable underground temperatures to provide consistent comfort year-round, significantly reducing electricity consumption compared to conventional HVAC equipment.
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Recent Projects

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Recent Projects

Turquoise ocean waves crashing in foamy white spray
A winding river cuts through a dense green forest from an aerial view.
Sunlit sand dunes with long diagonal shadows in warm tan and pink tones

Recent Projects

Turquoise ocean waves crashing in foamy white spray
A winding river cuts through a dense green forest from an aerial view.
Sunlit sand dunes with long diagonal shadows in warm tan and pink tones

Recent Projects

Turquoise ocean waves crashing in foamy white spray
A winding river cuts through a dense green forest from an aerial view.
Sunlit sand dunes with long diagonal shadows in warm tan and pink tones

Recent Projects

Turquoise ocean waves crashing in foamy white spray
A winding river cuts through a dense green forest from an aerial view.
Sunlit sand dunes with long diagonal shadows in warm tan and pink tones

Recent Projects

Turquoise ocean waves crashing in foamy white spray
A winding river cuts through a dense green forest from an aerial view.
Sunlit sand dunes with long diagonal shadows in warm tan and pink tones

Instagram Gallery

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Faces of Humanity

Portraits of people from around the globe
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Sands of Time

Stark beauty of desolate dunes
Close-up of green palm fronds with sunlight highlighting the leaf veins

Nature's Symphony

Breathtaking colors of our planet
Smiling person in a green sweater laughing against a light background

Faces of Humanity

Portraits of people from around the globe
Rippling sand dunes with fine orange-tan ridges

Sands of Time

Stark beauty of desolate dunes
Close-up of green palm fronds fanning out in sunlight

Nature's Symphony

Breathtaking colors of our planet
Smiling person with tousled hair in a green shirt against a light background

Faces of Humanity

Portraits of people from around the globe
Close-up of rippled orange sand dunes with soft shadows

Sands of Time

Stark beauty of desolate dunes
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Here's what our satisfied customers are saying...

At Onofreo Home Comfort Systems LLC, we take pride in providing exceptional HVAC services to our customers. We would be grateful if you could share your thoughts about our business with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review of Onofreo Home Comfort Systems LLC and let others know what you think.