26 Best Window Replacement Companies in Lake Ronkonkoma, NY (Mar 2023)
Window Companies Near Me
Thinking about replacing your windows? We've got all the information you need in this list of the best window installation companies.
We analyzed all the top window installers in Lake Ronkonkoma and selected the top 26 based on:
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Customer reviews
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Window replacement expertise
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Popularity with home-owners like you
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Updated March 14, 2023
Why you can trust EcoWatch
Although renewable energy sources like wind and solar are important when it comes to reducing your carbon footprint, improving your home's energy efficiency can also have a big impact on home energy conservation. Outdated windows could lead to spending more on energy bills during the winter or summer months.
Thankfully, saving you energy with more efficient windows also aligns with our goals of conserving energy and the resources it takes to produce it.
So if you're constructing a new home, renovating or updating your windows in Lake Ronkonkoma, this is the best place to get started.
Best Overall
Renewal by Andersen
- Great industry reputation
- Award-winning company
- Manufactures products in-house
- No lifetime warranty
Best Affordability
Window World
- Large serice area
- EnergyStar Partner
- Lifetime warranty
- Quality of service will depend on your area
Best Warranty
Universal Windows Direct
- Makes charitable contributions
- Wide variety of products and services
- Manufactures products in-house
- Some installations carried out by third-party contractors
Best Window Replacement Companies in Lake Ronkonkoma
The EcoWatch team examined dozens of installers that serve the Lake Ronkonkoma area to find the best window installation companies by our standards. The providers mentioned in this article passed our review standards for energy-efficient offerings as well as customer service, local expertise, price and beyond.

Renewal by Andersen
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Great industry reputation
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Award-winning company
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Manufactures products in-house
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No lifetime warranty
Renewal by Andersen provides the best availability in Lake Ronkonkoma. It's a subsidiary of the Andersen Corporation, a major manufacturer of windows and doors. Andersen has around 27 years of industry experience, and it currently provides services to nearly every state except Mississippi and West Virginia. The company has many positive reviews from customers on online review websites.
You may want to consider choosing Andersen if you're interested in a installer that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.
Energy Efficiency of Renewal by Andersen WindowsRenewal by Andersen appeals to eco-conscious consumers by providing energy-efficient window offerings. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.
How much does Renewal by Andersen cost in Lake Ronkonkoma?Pricing details are not available on Andersen's website because the cost of window installment depends on how many and what type(s) of windows you need. However, based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. You can inquire about a free quote on its website for more information about the cost.

Window World
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Large serice area
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EnergyStar Partner
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Lifetime warranty
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Quality of service will depend on your area
Window World offers windows expertise in Lake Ronkonkoma. This provider has 27 years of experience in the windows business, and it has proved to be one of the best companies in Lake Ronkonkoma. The company has many glowing reviews from customers on online review websites.
It is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.
Energy Efficiency of Window World WindowsWindow World is an Energy Star partner and has a variety of energy-efficient windows. Note that not all of the company's windows are Energy Star certified, so make sure to ask your Window World representative when inquiring about services.
How much does Window World cost in Lake Ronkonkoma?Window World doesn't have any cost information listed on its website, but it's known for offering some of the most affordable window installations around. Requesting a free quote on its website is the best way to know for sure.

Universal Windows Direct
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Makes charitable contributions
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Wide variety of products and services
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Manufactures products in-house
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Some installations carried out by third-party contractors
Universal Windows Direct is a company that has grown immensely since its inception in 2002, and now has several franchise dealers nationwide. Universal has around 20 years of experience in the window installation business.
If you're looking for a company that has an industry-leading warranty covering products, parts and workmanship for life, this may be the perfect provider for you.
Energy Efficiency of Universal Windows Direct WindowsThere are a wide range of window types that Universal Windows Direct offers, some of which are Energy Star products. The company offers energy-efficient UniShield brand windows. According to its website, UniShield window packages have higher gas fill rates and longer gas retention than most other brands on the market, and they are Energy Star products.
How much does Universal Windows Direct cost in Lake Ronkonkoma?Prices aren't available on Universal's website, but installations typically range from $225 to $425 per window based on customer feedback. That makes Universal Windows Direct more of a budget-friendly option for window repair and replacements. You can ask for a free quote on its website for more information about the cost.
We try to stay unbiased and transparent by listing pros and cons for each company we review. Additionally, our rankings are not affected by any partnerships.
More Window Replacement Companies in Lake Ronkonkoma
Sky Windows and Doors
Freeport, NY-
Helps Educate Customers
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Reliable Service
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Free Quotes
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Price Transparency
Services Offered
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Residential Windows
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Architectural Glass
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Energy-Efficient Options
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Doors
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Custom Window Designs
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Sliding Glass
Renewal by Andersen of Long Island
Farmingdale, NY-
Award-Winning
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Educational Website
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Price Transparency
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No-fee Quotes
Services Offered
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Fast Delivery
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Custom Window Designs
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Business Windows
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Double-Hung
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Stained Glass
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Sliding Glass
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Bay & Bow Windows
Renewal by Andersen - Branford
Branford, CT-
Consistent Workmanship
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Locally Recognized for Quality
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Good Customer Service
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Free Quotes
Services Offered
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Residential Windows
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Custom Windows
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Business Windows
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Double-Hung
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Stained Glass
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Sliding Glass
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Bay Windows
TL Home Improvement LLC
Shelton, CT-
Arrives on Time
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Price Transparency
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Reliable Service
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Free Quotes
Services Offered
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Residential Windows
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Fast Delivery
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Full-Service Installations
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Double-Hung
Renewal by Andersen
Stamford, CT-
Good Customer Service
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Reliable Appointment Windows
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Dependable Service
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Price Transparency
Services Offered
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Custom Window Designs
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Business Windows
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Double-Hung
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Stained Glass
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Sliding Glass
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Bay Windows
Pella Windows & Doors of Roslyn Heights
Roslyn Heights, NY-
Dependable Service
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Educational Website
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No-Hassle Pricing
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Award-Winning
Services Offered
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Residential Windows
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Architectural Glass
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Custom Windows
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Aluminum Window Frames
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Commercial Windows
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Double-Hung
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Sliding Glass
Storefront Glass & Metal
Huntington Station, NY-
No-fee Quotes
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Good Customer Service
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Price Transparency
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Timely Service
Services Offered
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Architectural Glass
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Heavy Glass
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Custom Window Designs
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Sliding Glass
Mr. Handyman of Upper Fairfield County
Fairfield, CT-
Locally Recognized for Quality
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Reliable Service
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Price Transparency
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Helps Educate Customers
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Windows
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Residential Windows
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Business Windows
The Window People
Stamford, CT-
No-Hassle Pricing
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Free Quotes
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Helps Educate Customers
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Excellent Customer Service
Services Offered
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Residential Windows
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Architectural Glass
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Energy-Efficient Options
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Custom Window Designs
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Sliding Glass
Eastern Glass & Shower Door
Milford, CT-
Good Customer Service
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Price Transparency
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Educational Website
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Free Quotes
Services Offered
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Doors
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Full-Service Installations
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Custom Window Designs
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Tempered Glass
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Residential Windows
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Business Windows
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Aluminum Window Frames
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Sliding Glass
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Glass Showers
Window Depot Usa Of Lower NY
South Hempstead, NY-
Good Customer Service
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Consistent Workmanship
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Award-Winning
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Reliable Appointment Windows
Services Offered
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Custom Window Designs
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Residential Windows
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Sliding Glass
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Double-Hung
Sears Window Replacement
New Rochelle, NY-
Price Transparency
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Reliable Appointment Windows
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Free Quotes
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Consistent Workmanship
Services Offered
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Sliding Glass
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Custom Window Designs
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Energy-Efficient Options
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Double-Hung
Tri State Window Factory
Deer Park, NY-
Price Transparency
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Award-Winning
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No-fee Quotes
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Consistent Workmanship
Services Offered
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Custom Windows
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Fast Delivery
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Sliding Glass
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Double-Hung
Mr. Handyman of Guilford, North and East Haven
East Haven, CT-
No-fee Quotes
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Award-Winning
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Excellent Customer Service
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Consistent Workmanship
Services Offered
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Custom Window Designs
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Residential Windows
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Commercial Windows
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Double-Hung
Tri State Window Factory
Seaford, NY-
Reliable Service
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Price Transparency
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No-fee Quotes
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Award-Winning
Services Offered
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Custom Windows
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Fast Delivery
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Sliding Glass
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Double-Hung
Window World of Long Island
Farmingdale, NY-
No-Hassle Pricing
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Good Customer Service
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Dependable Service
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Free Quotes
Services Offered
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Fast Delivery
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Tempered Glass
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Custom Window Designs
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Double-Hung
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Sliding Glass
Long Island Storefronts
Shirley, NY-
Award-Winning
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No-fee Quotes
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Excellent Customer Service
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Consistent Workmanship
Services Offered
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Architectural Glass
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Custom Windows
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Aluminum Window Frames
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Business Windows
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Double-Hung
Lowe's Home Improvement
Riverhead, NY-
Free Quotes
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Consistent Workmanship
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Good Customer Service
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Reliable Appointment Windows
Services Offered
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Energy-Efficient Options
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Custom Windows
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Aluminum Window Frames
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Double-Hung
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Sliding Glass
Window King of Connecticut
Stamford, CT-
No-fee Quotes
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Educational Website
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Price Transparency
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Excellent Customer Service
Services Offered
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Residential Windows
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Custom Windows
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Aluminum Window Frames
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Business Windows
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Double-Hung
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Sliding Glass
Cascella And Sons Construction Corp.
Central Islip, NY-
Free Quotes
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Educational Website
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Charitable Giving
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Price Transparency
Services Offered
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Custom Windows
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Business Windows
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Double-Hung
THE GLASS EMPORIUM INC.
Kings Park, NY-
Free Quotes
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No-Hassle Pricing
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Arrives on Time
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Excellent Customer Service
Services Offered
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Residential Windows
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Heavy Glass
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Tempered Glass
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Custom Window Designs
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Commercial Windows
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Double-Hung
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Sliding Glass
Ring's End
South Salem, NY-
No-fee Quotes
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Excellent Customer Service
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Price Transparency
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Helps Educate Customers
Services Offered
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Double-Hung
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Full-Service Installations
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Custom Window Designs
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Commercial Windows
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Aluminum Window Frames
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Architectural Glass
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Fast Delivery
Mike the Glazier Inc
Mineola, NY-
Good Customer Service
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Free Quotes
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Arrives on Time
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No-Hassle Pricing
Services Offered
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Residential Windows
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Commercial Windows
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Full-Service Installations
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Custom Window Designs
Mikita Door & Window
Freeport, NY-
Reliable Appointment Windows
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Price Transparency
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Helps Educate Customers
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Good Customer Service
Services Offered
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Custom Window Designs
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Sliding Glass
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Double-Hung
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Bay & Bow Windows
Sears Window Replacement
East Northport, NY-
No-fee Quotes
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Locally Recognized for Quality
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Price Transparency
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Educational Website
Services Offered
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Sliding Glass
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Custom Window Designs
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Energy-Efficient Options
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Double-Hung
Competition Glass
Port Washington, NY-
Price Transparency
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Excellent Customer Service
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Consistent Workmanship
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Free Quotes
Services Offered
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Fast Delivery
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Custom Window Designs
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Full-Service Installations
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Business Windows
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Sliding Glass
How Installing Energy-Efficient Windows in Lake Ronkonkoma Saves You Money
By upgrading to energy-efficient windows, you and your family can benefit in several ways, including:
- Save money on energy bills: The Department of Energy estimates that heat gained or lost via windows accounts for around 25-30% of household energy use. Upgrading to energy-efficient windows can help lower that number, which helps you save some money on your bills.
- Protect your valuables from fading: The low-emissivity coatings on some energy-efficient windows filter out damaging UV rays, preventing fading of your furniture, carpet and other valuables.
- Protect your investment: If your home is on the older side, your windows are most likely in need of replacement. Updating your windows can make your home more comfortable and also help increase the value of your house if you decide to sell.
- Decrease your carbon footprint: By using less energy after you upgrade to energy-efficient windows, you'll also be cutting your carbon dioxide emissions by about 12%, according to Energy Star.
Estimated Cost of Window Replacement in Lake Ronkonkoma
When considering window installation, each company offers different services and prices. Let's look at some average costs and services.
How Much Do New Windows Cost?
On average, homeowners in Lake Ronkonkoma can expect that most window installations will cost between $250 and $1,200, with the most common installations sitting at around $600. These numbers vary depending on the specifics of your installation, including type, number of windows, size, material, the location of your home and more.
With windows, efficiency is one of the most important factors for most homeowners. High efficiency windows may cost more off the bat, but by increasing the efficiency of your home — especially during the summer and winter — they can provide decades of energy savings. According to Energy Star, purchasing certified energy-efficient windows can save Lake Ronkonkoma homeowners $215+ per year after replacing single-pane windows.
The cost of your window installation will also vary depending on the kind of window material you choose for the frames. Wood windows are usually the most expensive, but it depends if they are 100% wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are shown to be more efficient.
What Services do Window Installers Offer?
In general, there are two types of window replacement services companies offer: full-frame and pocket installations.
A full-frame installation is a replacement of the total window. It involves removing the old window, the sill, and the exterior and interior trim. It can also involve additional materials, such as insulation and drip edges, which increase the overall cost of the project. Also worth noting: you may have to touch up the paint surrounding the window after a full-frame installation. Pocket installations (or retrofits) entail replacing a window within its existing frame, which makes pocket installations less labor-intensive and costly. But, if the frame has any rot or deterioration, you will most likely need a full-frame installation instead.
Your window installer should be able to help you choose which type of installation you should get.
Best Overall
Renewal by Andersen
- Great industry reputation
- Award-winning company
- Manufactures products in-house
- No lifetime warranty
Best Affordability
Window World
- Large serice area
- EnergyStar Partner
- Lifetime warranty
- Quality of service will depend on your area
Best Warranty
Universal Windows Direct
- Makes charitable contributions
- Wide variety of products and services
- Manufactures products in-house
- Some installations carried out by third-party contractors
How We Choose the Best Window Installers in Lake Ronkonkoma
In our search to find the most reliable, eco-friendly window installers in Lake Ronkonkoma, the EcoWatch team examined many companies before deciding on these. We have reviewed the best window installation companies in Lake Ronkonkoma mostly based on energy efficiency, as it's what's best for the environment and for you as a homeowner. Energy Star certified windows can lower energy bills by hundreds of dollars. Along with energy efficiency, our rating methodology is based on the following factors:
Service Area
Because this is a guide for Lake Ronkonkoma, we gave more points to companies that provide services to the city. There are certainly other reputable providers that didn't make the cut because of the low odds that they would serve the average homeowner in Lake Ronkonkoma.
Work Quality
We're willing to bet that you're not looking for a company to do a shoddy job installing windows. We've vetted each installer in our guide to make sure its technicians are well-qualified and that the company has gotten plenty of positive customer feedback to vouch for its service.
Customer Reviews
Customer feedback is another very important review factor. If the majority of customers don't have positive feedback about their service from a certain window installation company, it won't be featured on EcoWatch.
Cost
Cheaper windows don't necessarily mean better windows, but we know many of our readers would like to keep costs as low as possible. When analyzing the prices of providers, we awarded higher scores to companies with reasonable prices and accessible financing rather than "cheaper" services.
Warranty
Protecting your investment in new windows is important to many homeowners. For that reason, window installation companies that have lengthy warranties for products, parts and labor rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have a proven track record in the industry. Window installers that have more experience are going to earn higher rankings by our standards. We like to see at least ten years of experience.
Lake Ronkonkoma, NY Window Replacement FAQs
How much should window installation cost?
The average cost of installing a window can range from $450 to $650. There are a variety of factors that influence the price, including local labor costs, styles and sizes of windows, how energy-efficient the windows are, your property's location, the materials used in designing the windows and the number of windows.
What kind of window is the best for energy efficiency?
A window's energy efficiency is influenced by several factors, such as the quality of the installation and what kind of window it is. Look for Energy Star Certified windows — these are usually the most energy-efficient and are certified by the U.S. Department of Energy.
What services do window replacement companies do?
Window installers will do the entire process — from replacing your old windows with new ones to cleaning up after the windows have been put in place. Additionally, some companies offer window manufacturing, customization and repairs.
When is the best time of year to replace windows?
Although you can install windows any time of year, warmer weather is typically better for installing replacement windows. Additionally, the weather should be dry, because rain can make the installation harder.
Should I replace all my windows at the same time?
If your windows are greater than 20 years old, you most likely need to replace all of them. By that point, they are usually less efficient, leakier and/or more damaged than new windows. Replacing your windows all at the same time will involve less paperwork and less time.