About Us
Locations  

Office

40 Field Street
West Babylon, NY 11704

Emergency Service:
1-631-694-1616
Service Area
We are proud to offer service to the following communities:
Nassau County

Phone - (516) 694 – 1616 

Fax - (516) 694 – 1627  		Suffolk County

Phone - (631) 694 – 1616 

Fax - (631) 694 – 1627  		Queens

Phone - (516) 694 – 1616 

Fax - (516) 694 – 1627 
History  

Any decision you make regarding your home or business is important.  That includes decisions you make about your family’s comfort or work environment.  Your home and/or business deserve the best.  The best quality.  The best products.  The best service. When it comes to your comfort, your best choice in an air conditioning and heating company is All Seasons.

All Seasons is the expert in installation and servicing of air conditioning, heating, humidification, indoor air quality and energy management systems.  Your comfort is our business.  It has been our business since 1968, when we started providing customers like you with quality products and services to bring comfort to your home and business in every season.

For over 40 years, All Seasons has earned a reputation for excellence in air conditioning and heating.  With an average of over 20 year’s experience, All Seasons’ technicians are some of the most highly trained in the industry.  Renowned architects have come to appreciate our expertise, often consulting with All Seasons when designing new systems and when they need solutions to problems with existing ones.

All Seasons is committed to providing consistent quality service, one customer at a time…every time.  That’s why so many residential and commercial customers throughout Nassau, Queens and Suffolk have recommended All Seasons to their friends and family.

Whether your home or office is large or small or whether your system has one zone or more, All Seasons has the staff and technology to meet all of your heating and air conditioning needs.  From basic systems, to custom-designed systems, we can help make your home or office a more comfortable place.

You can count on All Seasons for the level of service you demand…when you need it most…to bring efficient comfort control to your home or work environment.

Our Qualifications  

We are heating and cooling Professionals!

We maintain a high level of quality among our staff. All of our installers and technicians are trained on a regular, on-going basis. We, and they, are certified by the following industry organizations:

Suffolk County License Number: 27720-H     Nassau County License Number: H0200450000

Bonded & Insured

CARRIER FACTORY AUTHORIZED DEALER

Carrier Factory Authorized Dealers are the home heating and cooling experts to turn to. They are your single resource for everything you need–from tailoring your ideal comfort system to installation, service and beyond.

Look for the Carrier Factory Authorized Dealer seal of approval–it means your dealer has met our rigid criteria for quality. In fact, Carrier offers you a 100% satisfaction guarantee when you purchase your Carrier equipment from a Factory Authorized Dealer. It's your sure sign of an air conditioning and heating system dealer that will provide you with superior products, intelligent insight and the ultimate service.

Becoming a Carrier Factory Authorized Dealer is no easy feat. Only those expert heating and air conditioning dealers who meet our highest standards and closest scrutiny–not only for their technical expertise, but also for their business practices and customer service quality—earn the Carrier Factory Authorized Dealers distinction.
NATE

North American Technician Excellence (NATE) is an independent, third-party organization that develops and promotes excellence in the installation and service of heating, ventilation, air conditioning, and refrigeration equipment by recognizing high-quality industry technicians through voluntary testing and certification. Our technicians have passed the rigorous testing necessary to qualify as NATE Certified Technicians.
Mitsubishi Diamond Dealer

All Seasons has reached the highest level of accreditation from Mitsubishi Electric HVAC Division. We have successfully completed factory training in the areas of applications, sales and service for Mitsubishi products. We are an authorized dealer and have invested much time to obtain personalized, hands-on training.  We have done this in order to provide you with the most professional quality installation and maintenance for your Mr. Slim HVAC product. As a Mitsubishi Diamond Dealer we offer you the most reliable environmental comfort available with Mitsubishi heating and air-conditioning products.
Uponor’s Wirsbo Aquapex Radiant Pipe Certified

Aquapex is the leading brand of potable water (Hot/cold) PEX Tubing. This brand of PEX Tubing is manufactured by Uponor Wirsbo. Aquapex may be used in radiant heat applications where there are no ferrous (metal/iron) components. However Wirsbo Aquapex is more commonly used for PEX Plumbing applications. We are Uponor-trained in the proper design and installation of radiant floor heating systems.

TracPipe® Flexible Gas Piping Certified

TracPipe CSST (Corrugated Stainless Steel Tubing) first introduced to the market in 1997 is used for natural gas and propane installations. TracPipe is currently in use for gas piping systems in single and multi-family residential as well as commercial and industrial buildings. TracPipe's superior corrugated tubing coupled with AutoFlare® fittings combine to make the best CSST product available. TracPipe is a leader in the industry with proprietary products such as CounterStrike® for enhanced lightning protection and PSII for underground installations.
BBB

The Better Business Bureau (BBB) system in the U.S. extends across the nation; coast-to-coast, and in Hawaii, Alaska, and Puerto Rico. Since the founding of the first BBB in 1912, the BBB system has proven that the majority of marketplace problems can be solved fairly through the use of voluntary self-regulation and consumer education.
Meet Our Team  
 

Owner

Dennis T. Costello

Sales Consultant / Design Consultant

Michael Costello
 

Production Supervisor

Michael Sweeney

Service Manager

Dennis M. Costello