Up to 100% off air sealing for all Berkshire Gas, Cape Light Compact, Eversource, Liberty, National Grid, and Unitil customers.
C2S Energy provides comprehensive insulation solutions for Massachusetts homeowners. From attic and wall insulation to basement and crawl space coverage, we ensure your home retains heat in winter and stays cool in summer. Our team uses only high-quality, code-compliant materials including blown-in cellulose, fiberglass batts, and spray foam insulation, tailored to your home’s specific needs and construction type.
Air leaks are one of the biggest sources of energy waste in Massachusetts homes. Our certified technicians identify and seal gaps around windows, doors, plumbing penetrations, electrical outlets, and attic bypasses using professional-grade caulking, weatherstripping, and expanding foam. Proper air sealing can reduce your heating and cooling costs by up to 20%, while also improving indoor air quality by keeping out dust, pollen, and outdoor pollutants.
Through the Mass Save program, eligible homeowners can receive up to 100% off the cost of insulation and air sealing services. C2S Energy handles the entire rebate process for you, from scheduling your no-cost home energy assessment to completing the approved work. As a Mass Save partner, we ensure you receive every available incentive, making it easy and affordable to improve your home’s energy efficiency.
