Endless Energy is a family owned and operated HVAC & energy efficiency company based in Marlborough, Massachusetts. Here’s some promises we’ll make right now:
- Live & local call center, you’ll never call us and get a robot
- All prices upfront, no hidden fees or surprise add-ons
- Impeccable treatment of your home, we’ll leave it spotless
- Mitsubishi Diamond Contractor, giving you access to superior service, and longer warranties
- Maximize your rebates, we have dedicated personnel to help process your rebates and ensure you get the most back from the state
Mitsubishi Diamond Contractors have been certified by Mitsubishi to provide the ultimate level of service to their customers. As a Mitsubishi Diamond Contractor, we have access to Mitsubishi’s extended 12 year product warranty, as opposed to the typical 10 year warranty.

MUZ-GL09NA – 9,000 BTU
MUZ-GL12NA – 12,000 BTU
MUZ-GL15NA – 15,000 BTU

MSZ-FH06NA – 6,000 BTU
MSZ-FH09NA – 9,000 BTU
MSZ-FH12NA – 12,000 BTU
MSZ-FH15NA – 15,000 BTU

MFZ-KJ09NA – 9,000 BTU
MFZ-KJ12NA – 12,000 BTU
MFZ-KJ15NA – 15,000 BTU
MFZ-KJ18NA – 17,000 BTU

MXZ-2C20NAHZ – 20,000 BTU
MXZ-3C24NAHZ – 24,000 BTU
MXZ-3C30NAHZ – 30,000 BTU
MXZ-4C36NAHZ – 36,000 BTU
MXZ-5C42NAHZ – 42,000 BTU

MSZ-FH06NA – 6,000 BTU
MSZ-FH09NA – 9,000 BTU
MSZ-FH12NA – 12,000 BTU
MSZ-FH15NA – 15,000 BTU

MFZ-KJ09NA – 9,000 BTU
MFZ-KJ12NA – 12,000 BTU
MFZ-KJ15NA – 15,000 BTU

MLZ-KP09NA – 9,000 BTU
MLZ-KP12NA – 12,000 BTU
MLZ-KP18NA – 18,000 BTU
