Midea EVOX G3 Heat Pump: Specs and Why It's Different

Not all heat pumps are equal, and the difference shows up on exactly the days you care about most: the coldest night of January and the most brutal afternoon of July. A lot of systems look similar on a showroom floor and then quietly fall short when the weather turns serious. The Midea EVOX G3 was built for the extremes, and for a Massachusetts homeowner choosing a system meant to last fifteen years or more, understanding what makes it different is worth a few minutes. It holds 100% heating output at minus 13 degrees Fahrenheit and pairs that with highly efficient cooling, all from one modern unit.

Here is a clear look at what sets the EVOX G3 apart, from its cold-weather performance to its efficiency, its refrigerant, and the way it installs.

Why the equipment choice matters

A heat pump is a long-term decision. The system you choose will heat and cool your home through more than a decade of New England weather, so the gap between an average unit and a top-tier one compounds every winter and every summer. The places that gap shows up are capacity in deep cold, efficiency on your monthly bill, and whether the system even qualifies for the rebates that bring the price down. The EVOX G3 was designed with all three in mind.



Cold-weather performance: 100% output at -13°F

This is the headline, and for New England it is the one that matters most. The EVOX G3 delivers 100% of its heating output at minus 13 degrees Fahrenheit, with a coefficient of performance up to 1.9 at that temperature. Older heat pumps are typically rated at a milder point and then lose capacity as the temperature falls, which is why they often needed a furnace as backup. By holding full output through extreme cold, the EVOX G3 is built to be a home's primary heat source, not a supplement.

Full heating output at minus 13 degrees is colder than a typical Massachusetts winter night, which is what gives the system real margin for the weather we actually get.

Efficiency: built to exceed ENERGY STAR Most Efficient

Performance in the cold means little if the system is expensive to run, so efficiency is the second pillar. The EVOX G3 is rated up to 19.0 SEER2 and 12.5 EER2 for cooling, and up to 10.8 HSPF2 with a coefficient of performance up to 2.14 at 5 degrees Fahrenheit for heating. The full product line exceeds the ENERGY STAR Most Efficient specification and the CEE Advanced Tier, which are the benchmarks for the most efficient equipment on the market.

EVOX G3 specs

Heating output at -13°F

100% (COP up to 1.9)

Efficiency

Up to 19.0 SEER2, 12.5 EER2

Heating efficiency

Up to 10.8 HSPF2, COP 2.14 at 5°F

Refrigerant

R-454B (next-generation, low-GWP)

Sizes

1.5 to 5 tons, multi-voltage

Rating

Exceeds ENERGY STAR Most Efficient

For your home, those numbers mean lower energy use across the entire year, especially if you are moving off oil, propane, or electric resistance heat. Efficiency on this scale is also what makes the system eligible for the strongest incentives.

Refrigerant: R-454B, built for what's next

The EVOX G3 uses R-454B, a next-generation refrigerant with a lower environmental impact than the older R-410A that previous systems relied on. This is not just an environmental footnote. As of 2026, Massachusetts removed R-410A systems from the Mass Save rebate list, so using a next-generation refrigerant is now a requirement to qualify for rebates at all. Choosing the EVOX G3 means choosing a system that is both future-ready and rebate-eligible on the refrigerant front.

Installation: modular by design

The EVOX G3 was engineered to be easier to install than a conventional system, which benefits you in both cost and disruption. It is built as a direct replacement for an existing gas furnace, with the same width and adaptive voltage, so it often fits the space your current equipment occupies. Its latching, modular design reduces the labor involved, and the system supports flexible installation across a range of homes and configurations.

That practical engineering is part of why LaCroix installs the EVOX G3 line. A system that performs at the extremes and installs cleanly is the kind of equipment that earns its place in a Massachusetts home.

What it qualifies for: 2026 Mass Save

Because the EVOX G3 is a cold-climate system on a next-generation refrigerant, it is built to qualify for Massachusetts incentives. The accurate 2026 picture:

• Whole-home rebate: up to $8,500 for a qualifying air-source heat pump serving as the home's primary system, by size.
• Income-based enhanced rebate: up to $16,000 for income-qualified households.
• 0% HEAT Loan: up to $25,000 in no-interest financing for qualifying projects.

Worth knowing for 2026: the federal heat pump tax credit expired at the end of 2025, and the standard Mass Save rebate was reduced from prior years, so the incentives are stronger now than they are likely to be later. Qualifying requires a cold-climate certified system, a next-generation refrigerant, and a Mass Save-approved installer, all of which the EVOX G3 and LaCroix provide.

Frequently Asked Questions

What makes the Midea EVOX G3 different from other heat pumps?

Three things stand out. It holds 100% heating output at minus 13 degrees Fahrenheit, so it does not lose capacity on the coldest nights the way older heat pumps do. It is highly efficient, rated up to 19.0 SEER2 and 10.8 HSPF2 and exceeding the ENERGY STAR Most Efficient specification. And it uses the next-generation R-454B refrigerant, which is required for Mass Save rebate eligibility in 2026. Together those make it a strong primary system for a Massachusetts home.

How efficient is the EVOX G3?

The EVOX G3 is rated up to 19.0 SEER2 and 12.5 EER2 for cooling, and up to 10.8 HSPF2 with a coefficient of performance up to 2.14 at 5 degrees Fahrenheit for heating. The full product line exceeds the ENERGY STAR Most Efficient specification and the CEE Advanced Tier, which are the highest efficiency benchmarks in the industry. For a Massachusetts home, that means lower year-round energy use, particularly when replacing oil, propane, or electric resistance heat.

What refrigerant does the EVOX G3 use, and why does it matter?

The EVOX G3 uses R-454B, a next-generation refrigerant with a lower environmental impact than the older R-410A. It matters for two reasons: it makes the system future-ready as older refrigerants are phased out, and it is required for Mass Save rebate eligibility in 2026, since Massachusetts removed R-410A systems from its rebate list. Choosing a system on R-454B keeps you eligible for the incentives that lower the project cost.

Is the EVOX G3 hard to install in an existing home?

Often it is simpler than expected. The EVOX G3 is designed as a direct replacement for an existing gas furnace, with the same width and adaptive voltage, so it frequently fits the footprint your current equipment occupies. Its modular, latching design reduces installation labor and supports flexible placement. A LaCroix technician confirms the fit for your specific home during a free consultation.

See the EVOX G3 in Your Home

LaCroix Heating and Cooling has served Massachusetts homeowners since 2012, a locally owned company that is fully licensed and insured, with more than twenty years of heat pump expertise and a Google 5-star rating. As a Fujitsu Elite Contractor and a Mass Save-approved heat pump installer, LaCroix backs every job with a 1-year installation warranty and a 12-year manufacturer parts warranty, and handles your Mass Save rebate paperwork as part of the project.

If you want a system built for the coldest and hottest days a Massachusetts year can deliver, the EVOX G3 is worth a closer look. To find out whether it fits your home and what your Mass Save rebate would be, call or text LaCroix at (508) 762-9131 or request a free consultation at lacroixhc.com.