[{"@context":"https:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/www.newjerseywindow.com\/blog\/entry-door-energy-efficiency-what-to-look-for-beyond-the-sales-pitch\/#BlogPosting","mainEntityOfPage":"https:\/\/www.newjerseywindow.com\/blog\/entry-door-energy-efficiency-what-to-look-for-beyond-the-sales-pitch\/","headline":"Entry Door Energy Efficiency: What to Look for Beyond the Sales Pitch","name":"Entry Door Energy Efficiency: What to Look for Beyond the Sales Pitch","description":"Anyone who’s been shopping knows that you can’t always trust marketing. While every company makes great claims about their products, not all of them deliver on what they promise. To find a front door that performs as you hope, you need to shop smart. New Jersey Siding & Windows, Inc., provides expert entry door replacement […]","datePublished":"2026-11-07","dateModified":"2026-11-11","author":{"@type":"Person","@id":"https:\/\/www.newjerseywindow.com\/author\/njsiding\/#Person","name":"Andrew Sciacca","url":"https:\/\/www.newjerseywindow.com\/author\/njsiding\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/4afc4160086f7bad2818e23ee4b094a7c0880439286ca7e407ab3af917b28246?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/4afc4160086f7bad2818e23ee4b094a7c0880439286ca7e407ab3af917b28246?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"New Jersey Siding & Windows","logo":{"@type":"ImageObject","@id":"https:\/\/www.newjerseywindow.com\/wp-content\/uploads\/2019\/09\/njsw-logo.png","url":"https:\/\/www.newjerseywindow.com\/wp-content\/uploads\/2019\/09\/njsw-logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.newjerseywindow.com\/wp-content\/uploads\/2026\/11\/close-view-of-woman-putting-draft-guard-on-inefficient-front-door.jpg","url":"https:\/\/www.newjerseywindow.com\/wp-content\/uploads\/2026\/11\/close-view-of-woman-putting-draft-guard-on-inefficient-front-door.jpg","height":600,"width":900},"url":"https:\/\/www.newjerseywindow.com\/blog\/entry-door-energy-efficiency-what-to-look-for-beyond-the-sales-pitch\/","about":["Blog"],"wordCount":860,"articleBody":"Anyone who’s been shopping knows that you can’t always trust marketing. While every company makes great claims about their products, not all of them deliver on what they promise. To find a front door that performs as you hope, you need to shop smart. New Jersey Siding & Windows, Inc., provides expert entry door replacement and other home improvement services throughout New Jersey. Here, we offer a guide to the features that define energy-efficient entry doors.Key TakeawaysR-values apply only to insulating materials, and they can’t always tell you how the whole door unit will perform.Look for the ENERGY STAR label to identify entry doors that meet energy-performance criteria.Core material, insulated frames, effective weatherstripping, and multi-pane glass with a low-E coating are valuable features for energy efficiency.Installation matters just as much as the door itself, so trust an experienced installer to help you get the most out of your new entry door.What Actually Makes an Energy-Efficient Entry Door?A significant portion of the energy used to heat buildings is lost through the windows and doors. Replacing your entry door with an energy-efficient model is an effective way to improve your home’s efficiency – but finding the right entry door can be easier said than done. There are three measurements that are used to quantify a door’s overall performance:R-value: Describes a single material’s ability to resist heat flow.U-factor: Describes the whole door system’s insulating ability.SHGC: Describes the amount of solar radiation that passes through glass.While these numbers are objective, some companies use them to make products seem more efficient than they are. For example, insulation with a high R-value may appear efficient, but you could still lose heat through ineffective weatherstripping. An easier way to identify an energy-efficient door is by looking for the ENERGY STAR label. ENERGY STAR-certified doors meet applicable energy-performance criteria, including requirements for U-factor and SHGC.What Features Contribute to Thermal Performance?A second way to find energy-efficient products is to shop for specific features. Some features matter more than others for blocking heat, and they’ll provide more information about performance than a flat number. Look for the following when shopping:Core material: Most steel and fiberglass entry doors feature cores made of polyurethane foam. The foam blocks heat transfer, creating a strong thermal barrier.Insulated frame: Energy-efficient door models will feature insulation inside the frame in addition to the door to reduce heat loss around the edges.Weatherstripping: Weatherstripping ensures a tight seal when the door is closed. High-quality doors use multiple types of weatherstripping to maintain efficiency.Glass inserts: Glass panels are interruptions in your door’s insulation. Look for multi-pane glass and low-emissive (low-E) coatings to reduce heat loss.Considering all four areas can help you select a replacement with strong thermal performance.Why Does Professional Installation Matter as Much as the Door?While an energy-efficient door model can help you save on heat, it’s only half of the equation. The highest-rated ENERGY STAR products can still perform poorly if they aren’t installed correctly. Improper installation results in errors that can ruin your door’s efficiency:Bad alignment for a crooked sealInsufficient caulking around the perimeterDamaged or incorrectly installed weatherstrippingInadequate insulation around the frameMake sure your investment delivers by trusting an experienced installer. New Jersey Siding & Windows, Inc., provides expert entry door installation designed to minimize disruptions and support your door’s long-term performance.Find the Right Energy-Efficient Entry Door Near You in New JerseyGetting an energy-efficient entry door can help reduce heat transfer and improve your home’s overall energy efficiency. Get started today at New Jersey Siding & Windows, Inc. We offer high-quality door products and installation for homeowners across New Jersey, helping you save on bills while feeling more comfortable at home. Contact us to learn more about our product catalog or to request a quote.Energy-Efficient Entry Doors FAQWhat actually makes an entry door energy efficient?Core material, frame insulation, weatherstripping, and glass panels are the most important features for making an efficient entry door. Look for these features to separate actual energy-efficient products from those that don’t deliver on their advertising.What is an R-value?An R-value describes a material’s capacity to resist heat flow. The higher the R-value, the more effectively the material blocks heat. While R-value can help you identify high-quality insulation, it only applies to one material and does not predict the door’s overall performance.What is U-factor?The U-factor describes how quickly an entry door transmits heat flow. It is expressed as a decimal between 0 and 2, with lower numbers representing better efficiency. U-factor describes the whole door unit with all its components, making it a better measure of performance.What is SHGC?Solar heat gain coefficient (SHGC) describes the amount of solar radiation that passes through glass. A lower SHGC means less solar heat enters through the glass. SHGC is especially important for doors with large amounts of glass."},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Blog","item":"https:\/\/www.newjerseywindow.com\/blog\/#breadcrumbitem"},{"@type":"ListItem","position":2,"name":"Entry Door Energy Efficiency: What to Look for Beyond the Sales Pitch","item":"https:\/\/www.newjerseywindow.com\/blog\/entry-door-energy-efficiency-what-to-look-for-beyond-the-sales-pitch\/#breadcrumbitem"}]}]