If you hire this pro, you’re covered by a money-back guarantee. Learn more
If you hire this pro, you’re covered by a money-back guarantee. Learn more
About
Endless Energy is a locally owned HVAC and plumbing company with over 46 years of home service experience. We serve most of Massachusetts, specializing in furnaces, boilers, central AC systems, heat pumps, and more.
With master plumbers, electricians, and HVAC technicians all under one roof, you don’t need to juggle multiple contractors. We also help you take full advantage of Massachusetts energy efficiency programs, including no-cost Mass Save® home energy assessments, rebates on heat pumps, and insulation work.
Endless Energy is recognized as a top heat pump installer in Massachusetts and is certified as a Mitsubishi Diamond Elite contractor, LG Platinum Pro Dealer, and Bryant Factory Authorized Dealer, and a Mass Save Heat Pump Leader Network member, giving you access to extended parts and equipment warranties.
We take a holistic, efficiency-first approach to every job, helping you save energy, time, and money.
Contact us today to schedule your consultation.
Overview
Hired 81 times
Serves Marlborough, MA
Background checked
78 employees
46 years in business
Business hours
This pro hasn't listed their business hours.
Payment methods
This pro accepts payments via Cash, Check, and Credit card.
Top Pros are among the highest-rated, most popular professionals on Thumbtack.
2025
Services offered
Fixture type
Ceiling height
Under 8 feet
8 - 10 feet
10 - 14 feet
Over 14 feet
Property type
House
Condo/Apartment
Townhouse
Projects and media
Projects and media
Reviews
Customers rated this pro highly for professionalism, responsiveness, and work quality.
Very good 4.5
122 reviews
5
81%
4
5%
3
2%
2
1%
1
11%
Your trust means everything to us. Learn about our review guidelines.
Read reviews that mention:
Abhijit b.
Jul 13, 2026
•
Hired on Thumbtack
we really had a wonderful experience working with EE in terms of quality of work and value of work. Our AC stopped blowing cool air, but the Fan was working. The Technician Mike Loud was able to troubleshoot and fix it in good time frame. Definitely recommend them.
Central Air Conditioning Repair or Maintenance
Mike r.
Aug 25, 2026
•
Hired on Thumbtack
The technician couldn’t have been any better. Figured out the problem and fixed it same day.
Heating System Repair or Maintenance
Richard B.
Jul 2, 2026
•
Hired on Thumbtack
James was friendly and explained every step well. Most importantly, he got my ac working again! It is an aging unit, and so it will likely be a candidate for replacement soon, but he shared great photos showing the likely culprit of my current issue. Excellent work at a great price. Thank you!
Details: Repair • Only warm air is blowing from the vents • Outside • Roof • Condo or apartment • Owner
Central Air Conditioning Repair or Maintenance
Nikhil T.
Aug 8, 2026
•
Hired on Thumbtack
Erin was very knowledgeable and went through all the issues that I was facing with my AC. He made some excellent recommendations which I think were very invaluable for me to come to some decision regarding my AC.
Central Air Conditioning Repair or Maintenance
Chinghung C.
Jun 27, 2026
•
Hired on Thumbtack
The team was excellent in every aspect, performing their work in a professional and detail-oriented way. I was very impressed by their teamwork. It would be perfect if they could offer a discount for retirees.
What should the customer know about your pricing (e.g., discounts, fees)?
At Endless Energy we use flat rate pricing for our heating and cooling installation projects, so when we meet with you the proposal we give you is not an estimate - it is a firm number!
What is your typical process for working with a new customer?
For a customer looking to install or replace a heating and cooling system our process looks roughly like this:
1) Customer meets with one of our HVAC professionals at their house so that we can discuss priorities and properly measure and size a system for your house
2) Your proposal will generally be presented onsite or to you within 24 hours.
3) If you chose to accept we start working on two things: one is internal technical approvals by our Project Management team to ensure there are no surprises or changes that we can easily avoid and the second is working with you on financing if you need. For heat pump projects we are a Mass Save Home Performance Contracts, which means we can perform your required Mass Save home energy audit, help you apply for the 0% 7yr HEAT Loan, and install your insulation.
4) Once the project has the greenlight and you have financing approved, we place equipment orders and start pulling permits with your town. Depending on the timeline for these we get you scheduled anywhere from 1-4 weeks (if on the longer side of that timeline we keep you update if there are opportunities to move up!).
5) The week before your install our Customer Care team will reach out to remind you of your installation and confirm any logisistics.
6) The first day of installation, a crew leads will introduce themselves and walk through the project with you to ensure our team follows meets your expecations on placement and other items.
7) A typical installation take 1-5 days depending on the scope. You may have 1-3 HVAC installation crews, 1-2 electrical crews, and 1-2 plumbing crews at your house. You will also have members of our leadership team and quality control team visiting throughout the project.
8) At the end of the project the crew lead or a member of our quality control team will review the project and help you understand how to use your new system. However if you need additional training you can always ask our office to send someone out to you!
9) Following the project a member of our Customer Care team will reach out to check-in on your system and make sure there aren't any punch list items that need to be taken care of. If not - we'll reach out roughly a year later to schedule your annual maintenance!
What types of customers have you worked with?
We work with both residential and commercial customers on heating, cooling, plumbing, and insulation projects.
