GranSasso, Inc.

4.94 |6 Verified Ratings
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GranSasso, Inc.

4.94 | 6 Verified Ratings
Write a Review


Your use of our services is governed by our Terms & Conditions

GranSasso, Inc.


At GranSasso, Inc., we take great pride in our experience, expertise, quality of work and customer service. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of every project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job. Our dependability, communication and quality of service is unmatched in the industry. We dedicate our professional expertise to making you feel completely satisfied with our services and becoming a lifelong customer. Come join us this season and let us put your mind at ease and a smile on your face with all of your swimming pool needs! VETERAN/FAMILY OWNED AND OPERATED.


Learn how HomeAdvisor screens and approves their pros.

Service Area

  • Melville
  • Stony Brook
  • Syosset
  • Smithtown
  • Babylon
  • Hauppauge
  • Kings Park
  • West Islip
  • Glen Head
  • Commack
  • Nesconset
  • Woodbury
  • East Setauket
  • Huntington Station
  • Holbrook
  • Saint James
  • Greenlawn
  • Sayville
  • Plainview
  • Deer Park
  • Lake Grove
  • Oakdale
  • Northport
  • East Northport
  • East Islip
  • Huntington
  • Ronkonkoma
  • Centerport
  • Cold Spring Harbor
  • See All >

Services Offered

Swimming Pools
  • Clean & Maintain Swimming Pool
  • Swimming Pool Heaters Install
  • Swimming Pool - Opening & Closing Service
  • Swimming Pool Covers Install

Areas of Expertise

  • In Ground Swimming Pool or Accessories - Repair or Service
  • Swimming Pool - Clean and Maintain
  • Swimming Pool Heaters - Install or Replace
  • Swimming Pool - Vinyl Liner Replacement
  • Swimming Pool - Leak Detection

Product Brands Used

  • Hayward
  • Intermatic
  • Jandy
  • Pentair
  • Raypack
  • Sta-Rite
  • Loop-Loc Covers

Quick Facts

Business Hours
(Please call to confirm)
  • Free Estimates
  • Credit Cards Accepted


In Business Since: 2008
Memberships & Affiliations
  • Association of Pool and Spa Professionals
  • Loop Loc Pool Covers
Green Certifications
  • - Home Performance with energy Star
Type: General Liability
Amount: $2,000,000
Expiration: 03-01-2020
HomeAdvisor Screened. View Details

HomeAdvisor allows Service Professionals to post information about themselves and their business on their profile. HomeAdvisor does not review or verify the information or representations set forth in those profiles, as they are self-reported by the Service Professional.

HomeAdvisor verifies state-level licensing where applicable - note: some states require local or county level licensing and you should verify whether or not your pro is properly licensed.

Business Overview

Community Involvement

We support the Wounded Warrior Project

How We Got Started

I chose to work in this industry because I got involved in the swimming pool industry at a young age and really became knowledgeable in the field through a hands on experience..

We started in this industry in 2005.

We describe our business as Family owned and operated

What separates your company from the rest?

Our dependability, communication and quality of service is unmatched in the industry.


GranSasso, Inc.

My Work
7 Projects
HomeAdvisor: The nation's largest network of screened and rated pros.

Ratings & Reviews
GranSasso, Inc.

Real feedback from real homeowners.
Learn more about this pro by reading the ratings and reviews below.
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5.0   |  
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5.0   |  
Frank and his team did an excellent job installing my new pool liner. He also installed a new Pentair salt chlorine generator, which works great. I have been using him for weekly maintenance the last 2 years. Always on time and very professional.
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5.0   |  
Review by in Lake Grove, NY
So far it has been a great experience working with Frank. He sticks to his word and is truly focused on providing excellent customer service. We are happy to have found him through HomeAdvisor.
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5.0   |  
Review by in Commack, NY
Great experience. Efficient, clean, prompt. Would use again.
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5.0   |  
Review by in Centerport, NY
Frank is great. He is very concerned with customer service and my pool looks great. I highly recommend.
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5.0   |  
Review by in Hauppauge, NY
Professional and honest
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Seal of Approval

What is the screening process that Service Professionals go through in order to become members of the HomeAdvisor network?

  1. Verify Trade License
    HomeAdvisor checks to see if the business carries the appropriate state-level license.
  2. Verify Insurance
    As a part of our screening process, we encourage professionals to carry general liability insurance. We require coverage for hundreds of services.
  3. Verification of State Business Filings
    For business types that require a Secretary of State filing, we confirm that the business is in good standing in the state in which it is located.
  4. Criminal Records Search
    HomeAdvisor uses 3rd party data sources to conduct a criminal search for any relevant criminal activity associated with the owner/principal of the business.
  5. Sex Offender Search
    We confirm that the owner/principal is not listed on the official state Sex Offender web site in the state in which the owner/principal of the company is located.
  6. Bankruptcy Search
    We use 3rd party data sources to check the history of the principal/owner of the business for bankruptcy filings by or against them.
  7. Legal Search for Civil Judgments
    We use 3rd party data sources to check the principal/owner of the business for state level civil legal judgments entered against them.
  8. Liens Search
    We use 3rd party data sources to check the principal/owner of the business for liens placed against them.
  9. Identity Verification (SSN)
    HomeAdvisor verifies the social security number(s) of the owner/principal for identity check purposes. This check applies primarily to smaller business entities.
  10. Identity Verification (Reverse Phone Lookup)
    We conduct a reverse business phone lookup to identify records matching the phone number information provided by the business.

NOTE: Member service professional information confirmed as described above may change or expire over time; while HomeAdvisor attempts to maintain accurate and up-to-date information, and confirms changes when notified, we cannot guarantee that profile and screening information is accurate. Therefore, we recommend that before working with a service professional you verify that information presented is still current and/or acceptable to you.
Please see HomeAdvisor's Terms and Conditions for a full description of how we screen Service Professionals

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