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Air Quality Services
Bayport, NY

One-Year Guarantee for New Installs

Free On-Site Estimates for New Equipment

Emergency Services Available

Request Lorem Epsom

Hero Request Form

Breathe Cleaner, Healthier Air in Your Home

Donlon Brothers Heating & Cooling Inc has provided reliable air quality services to homes and businesses in Bayport, NY since 1937. Our fourth-generation, family-owned company understands how important clean, healthy indoor air is for you and your loved ones.

Serving Suffolk County, NY, we offer complete solutions to address humidity control, air purification, and filtration needs. Our first responder-owned and operated business provides personalized service with integrity and reliability. Ready to improve your indoor environment? Contact us today.

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Why Choose Us

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One-Year Guarantee for New Installs

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Free On-Site Estimates for New Equipment

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Emergency Services Available

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Family-Owned & Operated

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Licensed & Fully Insured

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First Responder-Owned & Operated

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Why Choose Us

White checkmark inside a black circle icon

One-Year Guarantee for New Installs

White checkmark inside a black circle icon

Free On-Site Estimates for New Equipment

White checkmark inside a black circle icon

Emergency Services Available

White check mark inside a black circle icon on a white background

Service Contracts Available

White checkmark inside a black circle icon

Family-Owned & Operated

White check mark inside a black circle icon on a white background

Licensed & Fully Insured

White checkmark inside a black circle icon

First Responder-Owned & Operated

White check mark inside a black circle icon

Four Generations of Experience

Utility room with a white water heater, boiler equipment, pipes, valves, and a bucket against a concrete wall.
Air Filtration Installation
Our air filtration installation services remove dust, pollen, pet dander, and other airborne particles from your home's air supply. We install high-efficiency filtration systems that work seamlessly with your existing HVAC equipment to provide cleaner air throughout your living spaces.
Air Purifier Installation
Advanced air purifier systems eliminate bacteria, viruses, mold spores, and odors that standard filters cannot capture. Our certified technicians install whole-home air purification solutions that actively clean your air and create a healthier indoor environment for your family.
Dehumidifier Installation
Excess humidity creates discomfort and promotes mold growth in your home. We install whole-house dehumidification systems that maintain optimal moisture levels, protecting your property and improving air quality throughout every season.
Humidifier Installation
Dry air can cause respiratory irritation, static electricity, and damage to wooden furniture and flooring. Our humidifier installation services add the right amount of moisture to your indoor air, creating a more comfortable and healthier living environment during dry winter months.
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Recent Projects

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Here's what our satisfied customers are saying...

At Donlon Brothers Heating & Cooling Inc, we take pride in providing exceptional HVAC services to our customers. We would be grateful if you could share your thoughts about our HVAC company with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review of Donlon Brothers and let others know what you think.