We have been utilizing Long Island Swim-Pool Service for the past 9 years, and am about to enter my…read more10th season. First of all, the OPENING/CLOSING service has been exceptionally efficient. Upon opening, when issues arise the technicians were quick to resolve any issues without need for secondary visits. The closing is equally as good. The weekly cleaning and chemical balancing usually leaves us with a crystal clear pool. Again, a testament to the technicians ability and care. Over the years, we had a few major issues with our in-ground pool as well. Dario was always quick to respond and help to oversee repairs and helped with recommendations for 3rd party contractors (concrete repair and marble dusting ). We consider the pricing to be fair as well. In all, we would highly recommend this company to anyone requiring service for their pool. David & Diane Lim

Do not use this company, Barry lies and makes excuses for his sloppy work. They left my property a…read moremess. Find another company, don't risk this happening to you!!!! Most unprofessional company I have ever dealt with. Good luck!

Fantastic service. I took a chance and found them through a Google search…read more I spoke with Marianne and she was very receptive and answered my many questions and concerns. She never rushed me. They came over three consecutive days to clean, put in chemicals and vacuum. My pool is crystal clear. Gorgeous!! They deserve more than 5 stars. The crew were very courteous and professional. I am so very pleased with this company. I will always use them for my pool This is day 4 and the water is still crystal clear.

Second year using the pool guy of LI.... Reliable and accommodating company... Mathew is a…read moreresponsive and helpful guy I have an older heat pump for my inground pool and may need to replace this year.... Wouldn't call anyone else If you need anything for your pool this is the company to call!!

Best pool company around! It's easy to only see negative reviews online, but the truth is Eric and…read morehis team are as good as it gets. Eric is fair, trustworthy, and always reachable when you need him. They do a superb job maintaining our pool and truly stand by their work. Five-star service all around!

this place is a joke. they turned my pool green and could not figure out what was causing it. i…read moretook a sample over to leslie's pool and ofund out that the none of the chemicals were in order. the owner is also inept and he is rude. how are they still in business.

Excellent, friendly and punctual service. I would definitely recommend this pool service company.read more

Simply the best! Always on time...always thorough. And most importantly, honest. I highly recommend…read moreGran Sasso.

Mike and his team are great. even went above and beyond when i had last minute calls for…read moremaintenance. they also come right before opening season just to come by and "check on the pool". already have him scheduled for this year!

Needing a Power Vac for my POOL ASAP!…read more Finding the right people that will pick up the phone & charge a responsible price is hard to come by! I got extremely lucky and found Mike's Pool Care. Mike & Robert were on point. Once a appointment was made, they arrived on time & the service was dead on. They power vac & scrubbed my pool till it was perfect. They even added chemicals as part of the service "wow". I must say I was very pleased with the outcome. The price never changed, I will definitely use there service again!

We purchased our pool (15x26 semi-inground) from Brothers 3 back in 2021 when the "staycation"…read morebecame the norm, as covid shut down the entire world. The purchasing experience was a breeze and they provided information on different excavators, etc. for us to choose from. Back then, Jen and Craig were a HUGE help with us, as we were novices in the pool buying world at the time. Fast forward to 2026 and once again, Jen and Craig really came through and helped us out with purchasing a new/replacement pool liner. Jen is amazing. She's super nice and friendly. She's knowledgeable and has a great sense of humor! Craig went out of his way to make sure we got the liner delivered right to our door, as it was out of stock in their showroom on the day we went in. He doesn't know how much we appreciated him doing this. I highly recommend Brothers 3 if you're purchasing a new pool or hot tub (they have some AMAZING hot tubs and hopefully I'll be able to talk my hubby into investing in one eventually!!!). Thanks for a great experience!!

Purchased above ground pool in 2025. When we removed cover at start of season, the stanchion cover…read morecaps were all broken, some hardware was missing. We contacted Brothers III who informed they were not responsible for the defective parts, damage was caused by extreme cold over the winter. We had another pool for 29 years and never had an issue due to cold winter weather. We had no choice but to purchase the replacement parts which were discounted by 40% leaving an expense of $274.00 which we feel should have been absorbed by either the manufacturer or Brothers III. In addition, the time and labor necessary to replace the parts will be a burden. It is very disappointing to make a large purchase and find that the seller's response to defective parts is less than accommodating. I would avoid purchasing anything from Brothers III Pools.

Seriously helpful pool experts, took the time to help me with a thorny problem and gave thoughtful…read moreand good advice. Highly recommended.

[Intro added in response to business owner feedback] Final…read morework product is excellent, scheduling is a bit ... laid back. The Three Cousins not only open/close pools, they offer creative solutions for the homeowner in need. They have open/closed our in-ground pool, power washed our home and exterior walkways, replaced a wooden gate, created a brick walkway and installed an interim drainage solution. They will shop for materials at Home Depot or the Pool Store if needed. Alternatively, you can provide all supplies. [This section of the review remains unchanged] We started using this company a few years back (when they were "Cousins Pool Service")*. Small, family business that was easy to reach via text. They've grown and now use a shared company phone/texting system to book appointments. We booked an appointment for an in ground pool opening today via text. When there wasn't anyone here by 2pm, my brother rang the company owner. His voicemail instructs you to ring the main company phone number. The receptionist collected the information and promised to call with an update. By 3:30 we figured they weren't going to call, so we called them. My brother explained everything (again), highlighting (again) that the appointment was confirmed via text. He was asked (again) who booked the appointment from the company. We have no idea who operates their company appointment booking system. The owner reached out via text to my brother just now (4:30) and confirmed we are not on the schedule. He asked for the details my brother has provided twice to the receptionist. Providing coverage to watch both of my parents is always a challenge as they are elderly. We booked the time and prepared the backyard. (Moving the heavy filter/pump monstrosity, buying chemicals, adding water to the pool, pumping water off the cover, etc, etc.) * The guys who work for this company are really nice. The previous review under the old company name is glowing. https://www.yelp.com/biz/cousins-pool-service-patchogue?hrid=KcDzSpBg2_97vHNZsAnYpg&utm_source=ishare&utm_content=review ------- [Response to business owner follows] James, Our family has done business with you a number of years. The end work product is excellent. It's important to show up. Full stop. Ideally, you should be on time. It's not the client's job to explain why their time is valuable. I'm sorry you were frustrated by this review. Habitual scheduling issues forced us to fire you. I flipped thru my phone to refresh my memory on two prior projects. Sean scheduled an 11am powerwash and was an hour late. He completed part of a 1-day project, returning the next day. When shopping for drainage/fencing material (3pm), the guys deviated to work for another client without any notice. Sunset was at 5:53pm with a storm that night. The old gate had been removed, the grass ripped off and a path dug into the ground. I'm glad the guys returned at 7:30 pm and enclosed the yard as we have an in-ground pool. However, putting sand into the hole was poor planning with rain on the horizon. It became mud. Additionally, the landscapers were unable to access the backyard with a moat. If you're in need of photos with timestamps, please advise. With some administrative structural changes your company can grow. I wish you only the best.

Built me a very expensive and leaky pool. They convinced me for years that it was fixed again and…read moreagain, only to experience the same problems over and over: chemistry issues, salt, chemical & water loss. They ultimately blamed me for the leak and wanted to charge me several thousand for a pressure test. I finally decided to move forward with a pressure test at the end of the 2024 season, only to have Haven's new Sales rep try and convince me that the marble dust was my issue. Later the rep called me drunk after playing golf trying to close the deal for new marble dust to the tune of $30-40K. Last year, at the beginning of the season, I had a reasonably priced pressure test done by East West pools and found out that my pipes were fine. They applied $20 worth of silicone around all of the fixtures (including the deep end light which I suspected to be the culprit the whole time) while the pool was empty. For the first time in 20 years my pool is holding water! I feel like an idiot ever trusting Haven; glad its over.

They sent one guy to open my 60X25 foot pool, which has a large amount of commercial level…read moreequipment, although it is for my residence. Pool was not as clean as from other companies. Worse yet, the tech put acid in a chlorine tank. When I went to refill the chlorine, it caused a gas reaction which could have killed me. They emptied to incorrect acid when I called them, but no apology. They even tried to charge for the acid they incorrectly filled! Now that it is time to close, the INTELLICHEM probe tubes are not with the equipment, so I must pay for new ones. They claim to have left them here, but I did not recall seeing than anywhere since the probes were installed after the pool opening. Unfortunately, finding an honest, competent pool service company is a real challenge! I will add to this review after my closing by a different company. I could not trust Haven to close properly as they do not take responsibility for their services.