Heat Pump Installations We've Completed
Real Homes. Real Results.
Read Our Testimonials and Reviews
See how SumZero Energy Systems is helping families across Massachusetts stay comfortable year-round.
Get Inspired
by Our Recent Installations and Envision Your Next System
Whole-Home HVAC Makeover in Hopkinton | SumZero Delivers Clean Comfort
In this Hopkinton home, the homeowners had three main goals: replace aging AC units, reduce reliance on oil heat, and finally fix a frustrating hot/cold room above the garage. SumZero Energy Systems delivered a tailored solution: two Mitsubishi heat pumps for whole-home efficiency and a dedicated mini-split to handle that tricky space. Bonus? A HEPA-grade air cleaner that removes up to 99.9% of airborne bacteria. Watch h
Hopkinton
Small Space, Big Solution | Medfield Ceiling-Mounted Mini-Split by SumZero
Not every comfort issue requires a massive overhaul. In this Medfield home, the homeowners had one specific area they wanted to heat and cool—but with a twist: they didn’t want a wall-mounted unit. Our team at SumZero delivered a sleek, single-zone ceiling-mounted mini-split that blends beautifully with the space and performs down to -13°F. Watch how even a smaller project can make a big difference when it’s done right.
Medfield
8-Zone Heat Pump Installation in Acton Home
Watch how we transformed a colonial home with an 8-zone heat pump system, adding AC and cutting out fossil fuel heat. SumZero delivers clean and efficient solutions!
Acton
Goodbye Oil, Hello Fully Electric Comfort!
See how we transformed a farm-style home with a smart mix of ducted and mini-split systems, powered by solar.
Southborough
Hybrid Heat Pump Installation for Condo
See how we upgraded a condo with a hybrid system that heats and cools like a champ.
Ashland
Upgrading Comfort in a Classic Colonial
Watch how we transformed an old system into an eco-friendly solution.
Hopkinton
We're Your Guide to Rebates and Financing
Embark on your MassSave journey with us by your side. Our expertise ensures you maximize your rebates and financing options, turning complex processes into simple steps.
