Massachusetts #1 Trusted Heating, Cooling & Plumbing Company!

#1 Heating and Cooling Services in Massachusetts

Your Comfort, Our Priority

Turn to Endless Energy for heating and cooling in Massachusetts. We are a family-owned and operated business with a proven track record of providing HVAC, Plumbing, Electrical, and Home Energy Efficiency solutions. When looking for an HVAC company you can rely on, we have over 40 years of experience in the industry.  Whether you are looking to replace or repair your furnace, boiler, heat pump, or water heater Endless Energy is first in delivering home comfort to Massachusetts residents, and experts in helping to leverage every rebate incentive and federal tax credits available for new equipment installations.  Endless Energy provides an INSTANT REBATE option on eligible product installations to help as many Massachusetts residents take advantage of upgrading their home comfort as possible.  Additionally, we will help you understand all available financing options for the system you choose with some options as low as 0% interest over 7 years!

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

Same Day Plumbing Service in Massachusetts

Endless Energy is committed to helping Massachusetts individuals and business owners save money and increase their comfort through expert plumbing solutions.  We provide same-day/next day hot water heater replacement service throughout the majority of the state of Massachusetts.   Whether you prefer a standard hot water heater, a heat pump hot water heater, or a tankless hot water heater we can help.  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

Climate change is making it harder for people to get used to the longer summers and colder winters. As a result, it’s important that homeowners have the proper equipment and solutions to meet their heating and  cooling needs.

We can help you replace your old oil, natural gas, or electric resistance equipment with more energy-efficient models. Instead of choosing between efficiency and comfort, you now have the opportunity to get the best of both worlds by installing energy-efficient systems, like a whole-home heat pump! Get connnected and learn how we can help provide you up front instant rebate service, 12 year manufacturer warranties,  & limited service warranties up to ten years on top name brands such as Mitsubishi®, LG®, and Bosch®, Bryant®, Navian® and more!

$500 off A/C Only System


Skip the wait & Schedule your NO COST Home Energy Assessment directly with us!

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.