Rebates and eligibility
Which Mini Splits Actually Qualify for a Mass Save® Rebate — and Why ENERGY STAR Certification Is Not the Test
By Advanced Ductless · Published · Last verified
Short answer
No mini split that uses R-410A refrigerant qualifies for a Mass Save® rebate. Not one. We downloaded the published Qualified Product List and counted: of 5,083 unique mini split outdoor units on it, 3,265 use R-454B and 1,818 use R-32. Zero use R-410A. As of January 1, 2026 the programme removed every system with a global warming potential above 700.
ENERGY STAR certification is not the same test, and this is where it costs people money. In the federal ENERGY STAR database, 41% of certified mini split outdoor units still use R-410A. Every one of those is genuinely ENERGY STAR certified and none of them can earn a Massachusetts rebate. Shopping on that label alone puts you on non-qualifying equipment roughly four times in ten.
The only thing that settles it is the exact model number. The list is public, it is a spreadsheet, and you can search it in about a minute — we explain how below.
What actually decides whether a mini split qualifies?
One thing: whether the exact indoor and outdoor combination appears on the Mass Save® Heat Pump Qualified Product List. Not the brand, not the ENERGY STAR badge, not what the manufacturer’s brochure says. The list is published as a spreadsheet and anyone can download it.
Two filters decide what gets on it. The first is performance, and Mass Save® states that it aligns with the ENERGY STAR 6.1 Cold Climate specification:
| Equipment | HSPF2 | SEER2 | Capacity ratio at 5 °F | COP at 5 °F |
|---|---|---|---|---|
| Ductless mini split, single or multi-zone | 8.5 | 15.2 | 0.70 | 1.75 |
| Ducted mini split, single or multi-zone | 8.1 | 15.2 | 0.70 | 1.75 |
The second filter is refrigerant, it is newer, and it is the one catching people out — because it has no equivalent in the ENERGY STAR programme at all.
Why did R-410A equipment stop qualifying?
Because Mass Save® set a global warming potential ceiling. The programme’s own notice is unambiguous:
“As of January 1, 2026, new residential and light commercial heat pump Systems with a global warming potential (GWP) greater than 700, including Systems that use R-410A refrigerant, have been removed from the Heat Pump Qualified Product List (HPQPL).”
— Mass Save® Heat Pump Qualified Product List, Read Me tab
R-410A has been the standard refrigerant in this equipment for about two decades, and its GWP is far above the new ceiling. So the rule did not remove a handful of outliers. It removed a generation of equipment that is still sitting in warehouses and still being quoted.
The effect on ductless equipment specifically is total. Counting unique outdoor units on the list, every qualifying mini split runs either R-454B or R-32:
| Refrigerant | Qualifying mini split outdoor units | Share |
|---|---|---|
| R-454B | 3,265 | 64% |
| R-32 | 1,818 | 36% |
| R-410A | 0 | 0% |
Is ENERGY STAR certification the same test?
No, and the gap between the two lists is much larger than most people expect. Mass Save® borrows ENERGY STAR’s performance criteria but adds the refrigerant ceiling on top. ENERGY STAR has no refrigerant requirement at all.
So the federal list still contains a great deal of R-410A equipment, all of it legitimately certified. We pulled the EPA’s complete certified mini split dataset and deduplicated it the same way:
| Refrigerant | ENERGY STAR certified outdoor units | Share | Can earn a Mass Save® rebate |
|---|---|---|---|
| R-454B | 2,922 | 40% | Yes |
| R-32 | 1,407 | 19% | Yes |
| R-410A | 3,055 | 41% | No |
Two in five ENERGY STAR certified mini splits cannot earn a Massachusetts rebate. That is not a criticism of ENERGY STAR, which is a national programme answering a different question. It is a warning about using it as a proxy for a state rebate that it was never designed to predict.
Which brands have qualifying mini splits?
252 brands have at least one qualifying mini split, so this is a wider field than the familiar names suggest. But the counts vary enormously, and they track one thing closely: how early the brand moved off R-410A.
| Brand | Qualifying mini split units on the list | R-410A share of its ENERGY STAR line |
|---|---|---|
| TOSOT | 213 | 19% |
| Midea | 151 | 38% |
| GREE | 150 | 35% |
| MDV | 132 | 43% |
| TCL | 108 | 8% |
| AUX | 106 | 0% |
| BLUERIDGE | 106 | 30% |
| Mitsubishi Electric | 85 | 58% |
| LG | 69 | 32% |
| Lennox | 51 | 36% |
| Fujitsu | 46 | 46% |
| Trane / Mitsubishi | 0 | 100% |
The bottom row is the one worth pausing on. Every certified outdoor unit in that line uses R-410A, and it has no qualifying mini splits on the list at all. A well-regarded name is not a substitute for checking.
Where our own interest sits, stated plainly. We install AUX most often, and AUX comes out of this particular comparison well — its certified line moved entirely to R-32, so none of it was caught by the refrigerant rule. That is a fact about timing, not a claim about build quality, and it is not an argument that AUX is the better machine. On cooling efficiency at 95 °F we have published the opposite: 52 of 97 AUX units miss ENERGY STAR’s EER2 criterion against 6 of 85 Fujitsu. Both things are true, and you can check either one in the same afternoon.
Are there exceptions to the refrigerant rule?
Two, and neither helps anyone buying a ductless system. The programme’s notice allows more time for two specific categories:
| Category | May be installed until |
|---|---|
| Variable refrigerant flow systems of 65,000 BTU/h or greater | 1 January 2027 |
| Self-contained products assembled and charged at the factory (packaged heat pumps) | 1 January 2028 |
| Ductless mini splits | No allowance — the rule applied in full on 1 January 2026 |
The 1,261 R-410A entries still on the list are all packaged rooftop or central systems riding that 2028 allowance. Not one of them is a mini split.
There is also a second, quieter removal worth knowing about. A change in how AHRI reports heating capacity at 47 °F caused some previously qualifying systems to stop qualifying, with those systems remaining eligible only if installed on or before 31 March 2026. Those entries have since been removed from the list entirely, so we cannot tell you how many there were — only that the list has contracted twice this year, for two unrelated reasons.
How to check the model on your quote
About a minute, and worth doing before you sign rather than after the rebate is refused.
1. Get the outdoor unit model number in writing. Not the brand, not the series name, not the tonnage. The full model number as it will appear on the invoice.
2. Download the list. It is published at masssave.com/heat-pump-qualified-list as a spreadsheet. Open the “Air Source Heat Pump” tab and search for your model number.
3. Check the refrigerant column. If it reads R-410A on a mini split, stop — that system cannot earn a rebate, and any rebate figure in the quote is not available on that equipment.
4. Check the date the file was updated. It is on the Read Me tab. The list is revised continuously, so a screenshot from six months ago proves nothing about today.
If any of that is ambiguous, ask whoever quoted you to confirm in writing that the specific model is on the current list. A contractor who cannot answer that quickly is not someone you want handling a rebate application.
Summary
- No R-410A mini split qualifies. Of 5,083 unique mini split outdoor units on the Mass Save® list, 3,265 are R-454B and 1,818 are R-32. Zero are R-410A.
- ENERGY STAR certification does not predict Massachusetts eligibility. 41% of certified mini splits in the federal data still use R-410A. They are properly certified and they cannot earn a rebate here.
- Performance criteria are the easier half. HSPF2 8.5, SEER2 15.2, 70% capacity retained at 5 °F, COP 1.75 at 5 °F for a ductless unit. Most current equipment clears these; refrigerant is what removes it.
- Brand is a weak signal, and reputation is weaker. 252 brands have qualifying units. One widely respected line has none at all, because it is entirely R-410A.
- The exceptions do not cover ductless. Large VRF systems have until January 2027 and factory-charged packaged units until January 2028. Mini splits got no allowance.
- The list moves, so dates matter. It has contracted twice in 2026 for two unrelated reasons. Check the model on your quote against the current file, and note when you checked.
Frequently Asked Questions
It qualifies only if the exact indoor and outdoor combination appears on the Mass Save® Heat Pump Qualified Product List. The list is published as a spreadsheet and searchable by outdoor unit model number. Two filters remove most equipment: the refrigerant must have a global warming potential of 700 or less, which as of January 1, 2026 excludes every R-410A system, and a ductless mini split must reach HSPF2 8.5, SEER2 15.2, retain at least 70% of its heating capacity at 5°F and hold a COP of at least 1.75 at 5°F. Brand does not decide it. The specific pairing does.
No. Not one. As of January 1, 2026, Mass Save® removed systems with a global warming potential above 700 — which includes all R-410A — from the Qualified Product List. Checking the published list directly, of 5,083 unique mini split outdoor units on it, 3,265 use R-454B and 1,818 use R-32. Zero use R-410A. The R-410A entries that remain on the list are packaged rooftop and central systems, not ductless equipment.
Not necessarily, and this is the most common and most expensive misunderstanding. Mass Save® aligns its performance criteria with the ENERGY STAR 6.1 Cold Climate specification, but it adds a refrigerant requirement that ENERGY STAR does not have. In the federal ENERGY STAR database, 41% of certified mini split outdoor units still use R-410A. All of those are ENERGY STAR certified and none of them can earn a Massachusetts rebate. Shopping on the ENERGY STAR label alone lands you on non-qualifying equipment roughly four times in ten.
For a ductless mini split under 5.4 tons, whether single-zone or multi-zone: HSPF2 of at least 8.5, SEER2 of at least 15.2, a heating capacity ratio of at least 0.7 at 5°F, and a COP of at least 1.75 at 5°F. A ducted mini split needs HSPF2 8.1 instead of 8.5, with the other three unchanged. Mass Save® states these align with the ENERGY STAR 6.1 Cold Climate specification.
Ask them in writing whether the specific model appears on the current Qualified Product List. If the system uses R-410A and it is a mini split, it does not, and any rebate figure in that quote is not available on that equipment. This is worth catching before installation rather than after, because the rebate is usually a large share of the project cost and the decision to proceed was probably priced around it.
Yes, and we will confirm the specific model against the current list in writing before you commit to anything. We should disclose that the brand we install most often happens to sit well on this particular measure, because its certified line moved off R-410A early. That is a fact about refrigerant timing rather than a claim about build quality, and you can check it yourself in the published spreadsheet rather than taking our word for it.
Continuously, and it has removed equipment twice in 2026 alone. The refrigerant change took effect January 1, 2026. Separately, a change in how AHRI reports heating capacity at 47°F caused some systems that previously qualified to stop qualifying, with those systems remaining eligible only if installed on or before March 31, 2026. Any list of qualifying models, including this article, carries the date it was checked for exactly that reason.
Sources
- Mass Save® Heat Pump Qualified Product List — the published workbook, data updated 15 July 2026. All qualifying-equipment counts on this page come from its “Air Source Heat Pump” tab, 187,992 system rows deduplicated to unique outdoor units. Quoted text is from its Read Me tab.
- US EPA, ENERGY STAR Certified Mini-Split Heat Pumps (dataset
akti-mt5s), retrieved 11 August 2026 and deduplicated to 7,384 unique outdoor units. - AHRI Directory of Certified Product Performance — the underlying certification data both lists draw from.
Disclosure. Advanced Ductless installs ductless heat pump systems in Greater Boston and earns revenue when someone installs one. We install AUX most often, and AUX happens to sit well on the specific measure this article is about — so we have said where that comes from, and linked to our own published finding on the measure where it does the opposite. Every figure here was counted from a public dataset you can download and check. Counts reflect the Qualified Product List as of 15 July 2026; this page carries a re-verification date of 10 February 2027.
Not sure whether the system you were quoted qualifies?
Send us the outdoor unit model number and we will confirm in writing whether it is on the current Mass Save® list, and what the rebate is worth on it. No cost, and no obligation to use us.