Let Us Make Your Home Feel Like Home

Deer Park Heating & Cooling Experts

Always On Time...

  • ‘Round the Clock Availability

    No matter the hour, you can trust One Hour to be there to help you when you get hit with the unexpected.

  • 100% Satisfaction Guarantee

    We guarantee our materials, labor, and craftsmanship for up to two years from the date of your service.

  • StraightForward Pricing® Guide

    Before we start any work, we discuss your available options so you know exactly what you are getting and how much it will cost. No hidden fees!

  • Always On Time…Or You Don’t Pay A Dime!®

    We understand your time is valuable, so we promise to arrive at your home within the predetermined time window that you select, or your service call is free.

Get the Best Service Around

Our Happy Customers

Our Comfort Specialists are available to help, no matter the time of day. If you're in need of emergency services, we've got you covered 24/7.

  • “Mike P. worked very hard to get air conditioning back up and running. Very professional!”

    - Cathy Aldrich | Levittown, NY

Suffolk County Heating & AC Repair, Installation & Maintenance

Reliable Suffolk County HVAC Service from a Local Team

One Hour Heating & Air Conditioning® of Suffolk County is the premier provider of HVAC services for Long Island, including areas throughout Suffolk County. Our team is highly trained, courteous, and always on time! We’ve earned our reputation for providing great service by adhering to a strict code of ethics and never settling for providing less than a customer deserves. Besides sending a highly trained tech to your home, we also send a well-stocked vehicle, which means our experts can complete most jobs in just one visit.

All our Suffolk County heating and AC repair, installation, and maintenance services are backed by the UWIN Guarantee. This ensures that we use only high-quality materials and solutions for your home's comfort. Our team provides HVAC repair and installation services to residents in Suffolk County, including Deer Park, Bay Shore, Melville, Huntington, Medford, Riverhead, and all throughout Long Island. Whether your heater breaks on the coldest night of the year or your system needs regular maintenance, One Hour Heating & Air Conditioning® of Suffolk County is ready to help!

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100% Satisfaction Guaranteed

Why Our Suffolk County HVAC Company Is Trusted

We’ve gathered a loyal base of customers because of our dedication to their happiness. We provide neighborly service because we are your neighbors! One Hour Heating & Air Conditioning® of Suffolk County might carry the name of a nationally-recognized HVAC brand, but we’re an independently owned and operated business in Deer Park, NY. As a One Hour location, we provide some of the best guarantees in the industry.

We promise that you’ll be 100% satisfied with our heating and air conditioning services, that we’ll show up on time, and that we’ll provide upfront prices! If any aspect of our work doesn’t meet your expectations, we’ll make it right at no cost to you. Whether you need an emergency Suffolk County AC repair or want to make sure your heater is ready for the winter weather, we're ready to help. You’ve got nothing to lose, call our Suffolk County HVAC service pros today!

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Frequently Asked Questions

  • What does the One Hour mean in your company name?

    The ‘One Hour’ in our company name indicates our guarantee to be at your home in the predetermined window quoted when you set your appointment. If we do not show up within that window, your service call fee is waived.

    1. Express Appointment: This is an appointment that is scheduled during a specified one-hour time slot. You are promised that a technician will arrive at your home within this one-hour time window. You will also receive a call when the technician is en route to your home.

    2. Reserved Appointment: This is an appointment that is scheduled during a specified, two-hour time slot. You are promised that a technician will arrive at your home within this two-hour time window. You will also receive a call when the technician is en route to your home.

    3. Standard Appointment: This is an appointment that is scheduled during a specified four-hour time slot. You are promised that a technician will arrive at your home within this four-hour time window. You will also receive a call when the technician is en route to your home.

    4. Stand-By Appointment: This appointment is for overflow situations. This appointment will not have a specified time. You will receive a call when the technician is en route to your home.

    5. Emergency Appointment: This appointment is for an unspecified time after normal business hours Monday – Saturday and all day on Sundays/Holidays. Calls are dispatched in the same order they are received. You will also receive a call when the technician is en route to your home.

  • Do you service emergencies after-hours?

    Yes, we offer emergency services 24-hours a day, year-round.
  • How much will my service cost?

    The size and complexity of your HVAC issue will determine the cost. Because our trained, licensed HVAC technicians must diagnose the issue before we are able to quote you an accurate cost, we require an appointment to be set to complete a diagnostic on your system. Once the diagnostic is complete, your One Hour(R) technician will walk you through all costs using our Straightforward Pricing(R) Guide so there are never any surprise fees.
  • How often should I service my HVAC system?

    It’s ideal to service your cooling system each spring and your heating system each fall to ensure you find small issues before they become big problems.
  • How often do I need to change my HVAC filter?

    Your filter should be changed every one to three months, depending on conditions in your home and your region’s climate.
  • Do you offer purchase financing?

    We work built relationships with several lenders to ensure our customers are able to restore comfort in their homes. Ask your technician about your financing options.
  • What are the advantages of a smart thermostat?

    Smart thermostats learn a household's patterns and adjust heating and cooling according to when a home is occupied, give homeowners the ability to control the thermostat remotely, and enable homeowners to reduce their energy use, saving you money.
  • What is HVAC?

    HVAC means Heating, Ventilation, and Air Conditioning. HVAC systems refer to air conditioners, furnaces, and any unit that cools indoor spaces during the summer and warm them in the winter.

    In general, an HVAC system takes in air, heats or cools that air, and blows it into a room or any indoor space. While many homes have separate air conditioning and heating units, others have a heat pump that cools and heats the house.

    Not only do HVAC systems maintain desired temperatures, but they also improve indoor air quality and regulate humidity levels. But most importantly, these units provide comfort all year round.

  • What is a SEER Rating?

    The SEER (seasonal energy efficiency ratio) is a measure of the efficiency of your heating and cooling system.The higher the SEER rating, the more efficiently a unit operates. The SEER rating of any given unit can range anywhere from 13 to 21.

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