We are Cool Down

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

Our Pedigree

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Dandelion logo featuring a stylized dandelion plant with a roof-like structure on top, next to the word 'DANDELION' in uppercase letters.
Logo with a yellow intertwined loop above the word 'WUNDER' in gray uppercase letters.
Sungevity logo with orange gear symbol and company name
Text that reads 'Listen to your heart, follow your dreams.' with colorful geometric shapes on a black background.
ConEdison logo with stylized blue 'C' and 'E' and the company name 'ConEdison' in blue text.
Stylized text reading "IBM" in blue and black.
Holeywel logo in red text on a black background
A dark blue background with an abstract, curved shape in a lighter blue.
Black background with a yellow ribbon-like design above the word 'WUNDER' written in gray capital letters.
Sungevity logo with an orange geometric sun icon and gray text
logo of conEdison, an electric utility company, with a stylized blue 'E' and the company name in blue text
Multicolored, pixel art-style logo with a game controller icon and the words 'The Video Game' in stylized font.
Blue and black graphic logo with text on a white background.
The logo of Honeywell with red text on a black background.
Dandelion logo with an abstract flower and the word 'DANDELION' in bold uppercase letters.
The Wonder logo with a yellow intertwined loop symbol above the word "WUNDER" in gray letters.
SungEViTY logo with an orange gear-like icon and the company name
Text with the title "How to create a powerful logo" followed by a list of five steps, with a colorful pinwheel graphic on the right.
ConEdison logo with blue and black text and icon.
The text 'NVIDIA' in a stylized blue and black logo with diagonal lines forming the letters.
The word "Holeywell" written in bold red letters on a black background.

Our story started 3 decades ago

A young person with short dark hair holding a white film camera, sitting in front of window 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 a circular symbol made of four segments in light blue, orange, and dark blue, alongside the text 'Venture For Climate Tech' in black, orange, and dark blue.
Hudson Valley Venture Hub at SUNY New Paltz logo
EVV logo with bold black letters, a yellow rectangle, and red accents, with the text 'H U D S O N V A L L E Y' and 'Center for Innovation' underneath.

Meet the Team

Smiling man in a gray suit and white shirt against a plain white background.

Damien Semel-DeFeo
Cofounder & CEO

A man with a bald head, light facial hair, wearing a red jacket and a dark shirt, smiling, posed in front of a plain white wall.

Andrew Semel-DeFeo
Cofounder & Head of Operations

Close-up of a person with short dark hair and blue eyes, wearing a black shirt with colorful planets and stars pattern, outdoors with blurred background of trees and sunlight.

Ilyas Frenkel
Cofounder & CRO

Man smiling outdoors wearing a baseball cap and red shirt

Dexter Richard
Embedded Engineer

Locally Owned and Operated

Headquartered in New Paltz, NY

Serving New York, New Jersey, Connecticut, and Massachusetts