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Mattress Warehouse of Smithtown

Mattress Warehouse

Smithtown, NY

5(347 reviews)
11 active offers8 store perks
DLX Mattress advertisement. Buy direct from the mattress maker and save $500.

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About Mattress Warehouse

Mattress Warehouse is the largest independently owned mattress retailer in the U.S., operating over 500 locations nationwide. They offer a wide selection of mattresses and sleep accessories from top brands, providing customers with quality products at the best possible price. Their mission is to deliver a relaxed and educational buying process, ensuring the best overall sleep experience.

Current Promotions
Last updated Nov 1, 2026

Current homepage promotions include up to $1,500 off warehouse-wide, brand discounts up to 70%, 60%, and 30%, select free-base and mattress bundles, featured queen mattress prices, and 10% off for signing up for promotional texts.

  • Save up to $1,500 warehouse-wideWarehouse-wide
  • Save up to 70% on BeautyrestBeautyrest
  • Save up to 70% on SertaSerta
  • Save up to 60% on KingsdownKingsdown
  • Get a free adjustable base with select Sealy stylesSelect Sealy styles
  • Casper king size for queen priceCasper
  • Save up to 30% on HelixHelix
  • Serta Perfect Sleeper queen mattress for $599.99Queen size; Serta Perfect Sleeper
  • Serta iDirections queen mattress for $1,299.99Queen size; Serta iDirections
  • SomosBeds queen mattress for $499 with a free adjustable baseSomosBeds Restorative Medium; queen size
  • Save 10% when you sign up for promotional textsText NAP to 21048; marketing text-message consent and promotional alerts; message and data rates may apply
Purchase Incentives
  • Free in-home delivery and setup
  • Get 0% interest for 60 monthsPurchases of $5,999 or more; equal monthly payments required for 60 months
  • Locally owned
  • Trusted for over 30 years
  • Price match guarantee
  • Free delivery
  • Financing options
  • Sleep trial with bedMATCH system
Mattress Selection

Brands

Beautyrest
SomosBeds
Tempur-Pedic
Serta
Sealy
Kingsdown
Casper
Purple
Stearns & Foster
BEDGEAR
Aireloom
Cheswick Manor
Nectar
Smart Life by King Koil

Ideal for

adults
growing children
teens

Technology

Memory foam
Hybrid
Innerspring
Gel

Assortment

Mattresses
Box Springs & Adjustable Beds
Beds & Furniture
Bedding
Pillows
Sheets
Protectors

Price range

$
$$
$$$
$$$$

Price range not yet reported

What Your Neighbors Say

Real Google reviews from nearby shoppers

See all reviews

Average rating 5 · 347 reviews

Last updated Aug 27, 2026

Joyce Bressack· 5★ · 2026-07-14T14:22:12.199154612Z

I had such a wonderful experience working with Jeff at Mattress Warehouse in Smithtown. I had purchased from him before, so when I needed a mattress for my niece and her husband during an incredibly difficult and emotional time, I knew exactly who I wanted to call. Even though he is located in New York and I am in North Carolina, he made the entire process easy. He helped me handle everything over the phone, and I was able to pick up the mattress at a local Mattress Warehouse near me, the same day, without any hassle. This mattress was purchased for my niece and her husband right after their baby was born prematurely and was spending time in the NICU. Having a comfortable place to rest and get good sleep is so important as they navigate this challenging journey with their little one. I truly appreciate the kindness, professionalism, and care shown throughout the entire process. It was more than just buying a mattress — it was helping my family during a time when they needed support. Thank you for making it such a positive experience!

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Bianca Rivera· 5★ · 2026-07-05T23:48:15.544395521Z

Roseanne was amazing. She was very friendly and my parents Louis and Lupe said they felt like they were working with an old friend. They originally spoke with her through the phone but the service in person was even better. My parents were looking for a mattress for their bedroom because they have different preferences. She took her time, spending almost 3 hours going through all of the specs of the different beds, making sure they were happy with their decision. That ultimately led to them finding their perfect match! I would 100% recommend shopping here and working with Roseanne!

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Nessa D· 5★ · 2026-07-12T18:56:40.958437233Z

We had an awesome experience today. Jeff was a pleasure to do business with. He helped us choose a new mattress with the assistance of their computerized system, which is something we haven’t seen or tried before, highly recommended! Looking forward to a good nights sleep!

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Regina Arcuri· 5★ · 2026-05-03T15:57:02.402079902Z

Jeff and Roseanne were fantastic !! I never leave reviews but this shopping experience was OUTSTANDING ! I was looking for a twin mattress for my granddaughter and guest bed. They suggested the Berwyn Twin Firm which was very comfortable as well as a fantastic price. Best value and service. They were helpful as well as knowledgeable. I felt comfortable through the whole purchase and shopping process. Please go there they will take good care of you ! Gina

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Tracey Flicker· 5★ · 2026-06-29T20:04:29.662475602Z

I worked with Jeff today and had a wonderful experience buying a Helix mattress. He is knowledgeable, helpful and patient while arranging a delivery in MD for us. Thank you!

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