We are Cool Down

We believe that everyone should have access to efficient and inexpensive cooling

Our Pedigree

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Dandelion logo with a stylized dandelion flower and the text 'Dandelion'
Wunder logo with a stylized yellow line graphic above the word 'Wunder' in gray text.
Sungevity logo with an orange gear-like icon and the company name in gray text.
Logo with a black star and the words 'SQL INJECTION' written next to it, featuring a colorful geometric design on the right side.
Confie logo with stylized 'C' in shades of blue next to the text 'confie' in blue.
Text-based logo with the word "FUBAR" in blue and black uppercase letters.
Logo with the word "Holeywel" in red text, styled with a bold font.
Logo of Dandelion, featuring a stylized dandelion flower with lines radiating from the center.
Logo with yellow intertwined loops above the word "WUNDER" in gray letters.
The Sungevity logo with an orange gear icon and the text 'SUNGEVITY' in dark gray.
EconEinson logo with a blue stylized 'E' and the word 'econEinson' in blue text.
A stylized logo with the word 'Bit' and interconnected colored squares forming a geometric pattern.
Stylized blue and black logo with the word "FOX" in bold, uppercase letters.
Close-up of the red and black Honeywell logo on a product or packaging.
Dandelion logo featuring a stylized dandelion seed head with a house roof outline above and the text 'DANDELION' beside it.
Logo with a yellow interconnected loop design above the word 'WUNDER' in gray uppercase letters.
Sungevity logo with an orange gear-like icon and the company name in black text.
The Tetris logo, featuring the word 'TETRIS' on the left and a colorful Tetris block pattern on the right.
ConEdison logo with blue and black colors, featuring an electric lightning bolt design.
Logo with the text 'The DM' in black and blue letters on a black background.
The Google logo with red text and black background.

Our story started 3 decades ago

A black and white photo of a woman holding a pile of books in her hands, sitting in front of a window with closed blinds.

Damien in 1991 at St. Joseph’s School Invention Fair

Our Founder & CEO’s story in the renewable energy space started 3 decades, when he entered the seventh grade invention fair at the St. Joseph’s School in Millbrook, NY at 12 years old.

After spending a number of years pursuing law Damien returned to the renewable energy space leading sales teams for major solar companies like Sungevity – where he and his brothers were consistently the top solar energy consultants in the NY region.

After leaving Sungevity Damien led the inside sales team at Dandelion, the nation’s largest residential geothermal heating & cooling company. With his Dandelion experience behind him, he came up with a brilliant idea…

“If a geothermal system can provide heating and cooling to a person’s home because the temperature of the earth is ~50 degrees all year, why can’t we use a basement to provide cooling to homes in the summer months while savings folks $100s / year on their cooling bills?”
— Damien Semel-DeFeo, CEO of Cool Down

Our Partners

Venture For Climate Tech logo with circular graphic and text
Logo for Hudson Valley Venture Hub at SUNY New Paltz.
Logo for Hudson Valley Center for Innovation, featuring stylized letters 'EV' in black, gray, yellow, and red colors.

Meet the Team

A smiling man with a shaved head wearing a gray suit and a white shirt against a plain light-colored background.

Damien Semel-DeFeo
Cofounder & CEO

A man with a bald head and a slight stubble, wearing a red zip-up sweater and a dark shirt underneath, is smiling and looking at the camera against a plain light-colored background.

Andrew Semel-DeFeo
Cofounder & Operations Lead

Close-up of a young person's face with short dark hair, wearing a dark shirt with colorful planets on it, outdoors with blurred green and yellow background.

Ilyas Frenkel
Cofounder & CRO

A young man wearing a baseball cap and a red shirt smiling outdoors in front of a chain-link fence.
A man with dark hair and a beard smiling outdoors with fall foliage in the background.

Dexter Richard
Embedded Engineer

Danny Rubin
Operations Advisor

Locally Owned and Operated

Headquartered in New Paltz, NY

Serving New York, New Jersey, Connecticut, and Massachusetts