Massachusetts #1 Trusted Heating, Cooling & Plumbing Company!

#1 HVAC, Plumbing & Electrical Services In Massachusetts

Your Trusted Home Service Contractors

At Endless Energy, we pride ourselves on being a family-owned and operated business with over 40 years of experience. Our mission is to deliver top-notch HVAC, plumbing, and electrical services with a focus on energy efficiency and customer satisfaction. Whether you need immediate assistance or are planning a home improvement project, we’re here to help.

Why Choose Endless Energy?

  • Energy-Efficient Solutions: Benefit from our focus on sustainability and savings.
  • Customer-Centric Approach: Your comfort and satisfaction are our top priorities.
  • Certified and Trusted: Mass Save® Certified since 2015, with an A+ rating from the Better Business Bureau.
  • No Subcontractors: Our skilled team handles everything from start to finish.
  • Same-Day Services: Get quick, reliable solutions for urgent needs.

Home Services That We Provide

HVAC Services

  • Installation, Repair, and Maintenance: We provide comprehensive HVAC solutions, including the installation of energy-efficient equipment from top brands like Mitsubishi®, LG®, Fujitsu®, Bryant®, and Bosch®.
  • Everything Under One Roof: Get your Mass Save® Home Energy Assessment, a heating & cooling replacement, insulation, plumbing, and electrical all with the same company rather than multiple companies or numerous subcontractors.
  • Upfront Rebates & Financing: Benefit from our instant Mass Save heat pump rebates and 0% financing options to make your new heating & cooling system affordable.
  • Manufacturer Warranties: Enjoy peace of mind with up to 12-year manufacturer warranties and limited service warranties up to ten years.

Plumbing Services

  • Hot Water Heater Replacements: Same-day and next-day emergency water heater replacements available, offering standard, heat pump, and tankless options.
  • 0% Financing and Rebates: Benefit from upfront rebates and flexible financing on eligible products.
  • Extended Warranties: Limited service warranty options for up to 10 years ensure long-term reliability.

Electrical Services

  • Comprehensive Solutions: From minor repairs to major installations, our certified electricians handle it all.
  • Safety and Efficiency: We prioritize safe, efficient, and code-compliant electrical services to keep your home running smoothly.

We provide Instant Rebates on eligible home furnace, boiler, and heat pump systems so you don't have to wait to feel the savings!

Enjoy The Convenience of Our
Same-Day Services!

Whether you need an urgent hot water heater replacement, an emergency plumbing repair, or a quick HVAC fix, our dedicated team is ready to respond promptly. We understand that unexpected issues can disrupt your daily routine, so we prioritize providing fast, reliable solutions to get your home back to normal as quickly as possible. With expert technicians and high-quality service, you can trust us to handle your needs efficiently and professionally, ensuring minimal downtime and maximum comfort.

Click here to view our service territory.

Same Day/Next Day Emergency Hot Water Heater Replacement is just a phone call away!

0% Financing and Instant Up Front Rebates available on eligible products! Contact us to learn how to make comfort affordable!

Working with us brings you elite contractor advantages and expert installation services! We also provide the option for a Limited Service Warranty on all eligible equipment that provides peace of mind for up to 10 years that any needed repairs won't mean big costs down the road!

Personalized Heating and Cooling for You

With climate change making summers longer and winters colder, it’s crucial to have the right equipment to keep your home comfortable year-round. At Endless Energy, we offer the perfect solutions to meet your heating and cooling needs.

We can help you replace your outdated oil, natural gas, or electric resistance systems with energy-efficient models that provide both comfort and savings. Imagine enjoying the best of both worlds with a state-of-the-art whole-home heat pump!

Get connected and discover how we can provide upfront instant rebates, 12-year manufacturer warranties, and limited service warranties up to ten years on top brands like Mitsubishi®, LG®, Bosch®, Bryant®, Navien®, and more!

Take advantage of our special offer: $500 off an A/C only system! Embrace the opportunity to upgrade your home’s heating and cooling with Endless Energy and enjoy ultimate comfort and efficiency.

$500 off A/C Only System


Skip The Wait & Schedule Your NO COST Home Energy Assessment Directly With Us!

Home Energy Assessments

Discover the hidden savings in your home with our no-cost energy assessments. Certified for over 10 years, we provide a thorough evaluation with instant cost-saving tools to improve your home’s energy efficiency. Our expert auditors help you identify losses and suggest solutions like insulation and air sealing, allowing you to qualify for additional savings.

A no cost Mass Save® energy assessment will give you a comprehensive evaluation that also includes instant cost saving tools delivered to your door such as digital thermostats, energy saving power strips, and low-flow shower heads.  We have been certified to conduct no cost energy assessments for over 10 years, and our expert energy auditors will help you discover where your home is losing efficiency at no cost to you! To find out if your home qualifies for a no cost home energy audit in just a few seconds click here!

Keep the air you pay for inside by taking advantage of available savings such as 75%-100% off needed insulation + No Cost Air Sealing!

Mass Save® Program

Get a No-Cost Home Energy Assessment!

A Great First Step
With a no-cost energy assessment, you’ll start saving on electricity right away with immediate energy & cost saving tools brought to you.
Out With The Old, In With The New
We’ll help you replace things like outdated thermostats, faucet aerators, and shower heads with newer more efficient models at no cost to you!
What You’ll Receive

Your no-cost assessment includes:

  • Infrared testing
  • Targeted air sealing
  • Digital thermostats
  • Low-flow shower head
  • 75% off insulation
  • Faucet aerators
  • Energy-efficient power strips

Paid for by Mass Save®; savings vary depending on home needs. Eligibility requirements apply. 

Trusted HVAC Installation, Repair, and Service in Massachusetts

At Endless Energy, our experienced team can help identify and maximize home and business energy efficiency and comfort!
  • We are locally owned for over 40 years
  • We have a wide range of certified and experienced HVAC, Plumbing, and Electrician tradesmen all under one roof! Reducing the need for any subcontractors!
  • Our experienced team of account managers can help you design the ideal comfort solution for your home or business. Schedule a no cost design consult!
Endless Energy has a commitment to providing the best possible service and uncompromising quality.
  • We have been Mass Save® Certified since 2015
  • We are the preferred Contractor for the city of Newton for 4OurFuture campaign
  • We are proud to have an A+ Better Business Bureau rating

Ready to have your home become more energy-efficient with our HVAC services? Contact our team in Marlborough today!

5 Star Reviews

I am very happy that I chose to work with Endless Energy to install mini splits for heating and cooling. From my first call to install day the whole process went very smooth. Everyone was extremely knowledgeable, professional, and helpful!
Kerry H.
We had a pleasant and professional experience with Endless Energy for our home energy audit and mini split installation! Endless rose to the occasion to help us get whole home mini splits installed quickly and efficiently!
Andreas A.