About This Project:
Energy Efficient Replacement Windows Installation
Chelsea, MA
A Chelsea, MA homeowner was facing challenges with old windows that were leaking water, leading to discomfort and potential damage to the home. Old and leaky windows can lead to wood rot in the frame–a very costly repair. Recognizing the urgency of the situation, the homeowner called us at Coastal Windows & Exteriors, asking for an expedited replacement with state-of-the-art double-hung windows that not only meet but exceed the latest Energy Star 7.0 ratings. Coastal came to the rescue!
Replacement Window Project in Chelsea, MA: The Installation
The replacement involved installing four slim-line double-hung windows, chosen for their sleek design and superior functional performance. These windows are certified by Energy Star and are renowned for having the lowest air infiltration ratings in the industry at 0.01 CFM. This rating indicates exceptional quality and effectiveness in preventing unwanted air exchange between the interior and exterior of the home. As the top window contractors in Chelsea, MA, we’re thrilled that this homeowner trusted our expertise for energy efficient window installation!

Energy Efficient Windows
Frequently Asked Questions About Replacement Windows in Chelsea, MA
What are the benefits of replacing old windows?
Replacing old windows with new, energy-efficient models can significantly reduce your energy bills by improving your home’s insulation. Moreover, energy-efficient windows help maintain stable indoor temperatures, easing the strain on heating and cooling systems. Additionally, new windows enhance curb appeal by giving your home a fresh, updated appearance. They also increase property value, making them a smart investment for long-term returns. Furthermore, these windows help reduce outdoor noise, creating a quieter, more comfortable living environment. Therefore, upgrading your windows offers improved comfort, savings, and visual appeal all in one.
How do I know if my windows need replacing?
Signs that your windows need replacing include noticeable drafts, which can make rooms uncomfortable and raise energy costs. Difficulty opening or closing windows often points to warping, balance failure, or frame damage. Additionally, condensation between panes is a sign of seal failure, which reduces insulation performance. Rotting frames indicate moisture infiltration and can compromise the window’s structure. Moreover, if you notice steadily increasing energy bills, your windows could be a major source of heat loss. If your windows are over 20 years old, it’s a smart time to consider an upgrade. New energy-efficient models improve comfort, reduce utility costs, and enhance your home’s appearance.
What types of replacement windows are available?
There are several styles of replacement windows to choose from, including double-hung, casement, sliding, awning, and picture windows. Each style offers unique benefits in terms of ventilation, ease of use, and aesthetic appeal.
Double-hung windows are popular for their classic look and easy cleaning, as both sashes can tilt in. Casement windows open outward like a door, providing excellent ventilation and a clear view. Sliding windows glide horizontally, making them great for wider openings and simple operation. Awning windows hinge at the top and open outward, allowing airflow even during light rain. Picture windows do not open, but they offer expansive views and maximize natural light.
Moreover, combining styles can give you both function and beauty. Therefore, selecting the right window style can enhance energy efficiency, boost curb appeal, and match your home’s unique architecture.
What makes a window energy efficient?
Energy-efficient windows typically feature double or triple-pane glass filled with inert gas like argon to reduce heat transfer. These layers improve insulation and help maintain a stable indoor temperature year-round. Additionally, low-E coatings reflect infrared light, keeping your home warmer in winter and cooler in summer.
Quality frame materials—such as vinyl, fiberglass, or composite—further improve insulation and reduce thermal bridging. Moreover, proper installation is essential to eliminate air leaks and ensure your windows perform as designed.
Therefore, for the best performance and savings, look for windows that meet or exceed the new Energy Star® 7.0 ratings. These updated standards ensure maximum efficiency, lower energy bills, and increased indoor comfort in every season.
How long does it take to install replacement windows?
The installation time for replacement windows can vary depending on the number of windows and the type of installation. However, most professional installers can typically replace 10–15 windows in a single day under standard conditions. Moreover, factors like window size, accessibility, and weather can slightly impact the schedule. Additionally, experienced crews ensure each window is properly sealed and aligned for maximum efficiency. Therefore, you can expect a smooth, timely process that minimizes disruption while delivering long-lasting results.