Business Details
50+ Years
experience
Premium Energy-Efficient Windows & Doors in Buffalo, NY
Energy King Windows & Doors has been a trusted provider of premium building products for over 59 years, specializing in energy-efficient windows and doors designed to enhance home value and comfort. Our product lineup includes Energy Star Certified windows, vinyl window series, entrance doors, and sliding patio doors, all engineered with advanced technology for superior insulation and durability. We partner with industry leaders like ThermaTru Doors to offer handcrafted glass options and materials such as fiberglass, wood, and steel, ensuring security, customization, and aesthetic appeal.Every product reflects our commitment to innovation, with features like Super Spacer technology, double-strength glass, and a lifetime warranty on Flex Screen components. Our dedicated dealers provide expert guidance to help homeowners select the perfect solutions tailored to their needs and regional climate conditions.
Services
Energy Star Windows
Entrance Doors
Sliding Patio Doors
Fixed Light Windows
Architectural Shapes
Details
- Year established: 1963
Highlights and features
- We specialize in Energy Star Certified windows and doors for maximum energy efficiency.
- Our 59+ years of experience ensure proven quality and reliability in every product.
- We offer diverse material options including fiberglass, wood, and steel for customization.
- Our partnership with ThermaTru Doors provides access to handcrafted, premium entryways.
- Super Spacer technology enhances insulation performance in all our window products.
Associations and certifications
- Energy Star Certified
Services
Energy Star Windows
Our Energy Star Certified windows utilize double-strength glass and Super Spacer technology to maximize insulation and reduce energy costs. Ideal for homeowners seeking durable, eco-friendly solutions, these windows are available in multiple styles, including double-hung and awning models, ensuring both functionality and aesthetic appeal for any residential property.
Entrance Doors
We offer premium entrance doors crafted from fiberglass, wood, and steel, designed to combine security, durability, and visual appeal. Each door features handcrafted glass options and energy-efficient components, providing a welcoming yet protective barrier that enhances curb appeal while maintaining thermal performance for year-round comfort.
Sliding Patio Doors
Our sliding patio doors provide seamless access to outdoor spaces while allowing abundant natural light indoors. Constructed with durable materials and energy-efficient glazing, these doors come in two- and three-panel configurations, including weather-resistant designs for all-season functionality and enhanced home aesthetics.
Fixed Light Windows
Fixed light windows offer unobstructed views and maximum light transmission without operable components. Available in Pro110 and Pro210 models, they are engineered with insulated glass and reinforced profiles to ensure structural integrity, making them ideal for high-traffic areas requiring permanent, low-maintenance installations.
Architectural Shapes
We provide 25 architectural window shapes to accommodate unique design preferences and structural needs. These custom-shaped windows integrate advanced foam-filled profiles and energy-efficient glass, delivering both stylistic versatility and thermal performance tailored to non-standard residential applications.
Questions
What types of windows do you offer?
We offer Energy Star Certified windows including double-hung, awning, fixed light, and architectural shapes in customizable sizes and materials.
Are your products energy-efficient?
Yes, all our windows feature advanced insulation technology, Super Spacer systems, and energy-efficient glass to reduce utility costs.
Do you provide warranties?
Our Flex Screen components come with a Limited Lifetime Warranty, and we offer additional guarantees on glass breakage and materials.
How do I order products?
Contact our dealers for personalized quotes or use our web-based system for streamlined ordering and customization options.
What door materials are available?
We provide fiberglass, wood, and steel doors, each offering unique benefits for durability, security, and aesthetic appeal.
Do you serve areas outside Buffalo?
We work with a network of dealers across multiple regions to ensure accessibility for homeowners nationwide.
Reviews (3)
Amanda Joyce
Feb 03, 2022
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Energy King Windows & Doors recently replaced the windows and doors in my 100+ year old house, and what a difference! Dave really took the time to help us pick the right windows and doors. There are no more drafts and house holds the heat much better. The windows look outstanding and have really given the old farmhouse a more modern look. Thank you for everything! We are so thrilled the whole experience.
Charles Alexander
Mar 24, 2019
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My family business stood by Energy King, formerly sellmore, for what was prolly more than 30 years. When their branch closed near us we were forced to buy elsewhere and that was ok but to now not honor our customers warranty is wrong.
Ariel Venesky
Dec 13, 2018
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Quality windows and we've had great customer service experience! In the 1000's of windows we've put in we've only had to contact them about replacing two!
