What electrical difference should I check first in this comparison?

Start with the published voltage requirements: MRCOOL DIY 5th Gen 12,000 BTU (115V): 115V; Cooper & Hunter MIA 12,000 BTU (115V): 115V. A 115V label can make a retrofit easier, while a 230V system still needs the right dedicated circuit and local code review.

MRCOOL DIY vs Cooper & Hunter (12,000 BTU)

The answer

Two budget-friendly 115V units, split by one question: who installs it. The MRCOOL DIY installs itself with a precharged quick-connect line set - no vacuum pump, no refrigerant handling - and keeps its warranty valid when you do the work. The Cooper & Hunter MIA is the cheaper box, but it's a flared, evacuated, professional install. Choose MRCOOL if you'll do the work and want to skip the installer bill; choose Cooper & Hunter if you're hiring a pro anyway and want the lowest equipment price.

Side by side

Systems compared

Side-by-side generated quick-facts comparison table.
Specification	MRCOOL DIY 5th Gen 12,000 BTU (115V)	Cooper & Hunter MIA 12,000 BTU (115V)
SplitAtlas score	8.6 / 10best published	7.5 / 10
Price band	not published	not published
Rated cooling capacity	12,000BTU/h	12,000BTU/h
Rated heating capacity	12,000BTU/h	12,000BTU/h
SEER2	23.5SEER2best published	21.2SEER2
HSPF2	10.2HSPF2best published	8.7HSPF2
Rated heating at 5F	not published	not published
Minimum heating ambient	-13F	not published
Voltage options	115V	115V
Install path	DIY install	Professional install
Warranty terms	Standard: 5 yr parts / 7 yr compressor (standard coverage)	Standard: 5 yr parts / 7 yr compressor (standard registration/installation terms)
Noise range	Indoor 43.0/39.5/33.5/24.0/18.0 dB(A) / Outdoor 54 dBA	Indoor 40.5/32.5/25 dB(A) / Outdoor 54 dBA
Refrigerant generation	R-454B - current-generation refrigerant	R-454B - current-generation refrigerant

Some retailer links may earn us a commission at no extra cost; paid relationships never change scores or recommendations. Affiliate disclosure

Paid link

MRCOOL DIY 5th Gen 12,000 BTU (115V)

Check price at HVACDirect

Reference-only price

Last seen at HVACDirect: $2,359

Cooper & Hunter MIA 12,000 BTU (115V)

no current retail listing

Data freshness: selected systems last sourced Aug 17, 2026 or newer.

Share this view

Both run on a 115V circuit, so neither needs a 230V panel project - but the Cooper & Hunter still needs a professional to pull a vacuum and charge it, while the MRCOOL's precharged lines don't. Add the installer labor you'd pay on the C&H and the MRCOOL's higher sticker narrows fast.

Who each is for

The MRCOOL DIY buyer has a straightforward room and a free weekend. The precharged Quick Connect line set means no refrigerant work, and self-install keeps the warranty valid - so once you count the labor you're skipping, it's the cheaper total. See the best DIY mini splits.

The Cooper & Hunter buyer is hiring a professional regardless and wants the lowest equipment price. The MIA is a budget single-zone (built by Gree) - fine for a mild-climate room where up-front cost rules. Note its low-ambient heating isn't published, so treat it as a cooling-first pick for cold regions.

The bottom line

If you're installing it yourself, the MRCOOL DIY is the smarter total spend and keeps you warrantied. If a contractor is already in your plans and you just want the cheapest reliable box to hand them, the Cooper & Hunter's lower sticker wins

just budget the labor. Read the honest brand takes in the MRCOOL review before deciding.

Keep comparing

Want the DIY unit against a higher-efficiency value brand? See MRCOOL DIY vs Senville AURA. Filter every published system by price, efficiency, and install path in the product finder.

Sources

AHRI: AHRI Certificate of Product Ratings ref 216623803 (2025-06-20) - Cooper & Hunter MIA 12,000 BTU (115V), retrieved Jul 18, 2026.
Cooper & Hunter: CH-RLS12MIA submittal data sheet - Cooper & Hunter MIA 12,000 BTU (115V), retrieved Jul 18, 2026.
Cooper & Hunter: Flared refrigerant piping installation evidence - Cooper & Hunter MIA 12,000 BTU (115V), retrieved Aug 17, 2026.
Cooper & Hunter: Flared refrigerant piping installation evidence - Cooper & Hunter MIA 12,000 BTU (115V), retrieved Aug 29, 2026.
Cooper & Hunter: MIA Series brochure (parsed 2026-07-18) - Cooper & Hunter MIA 12,000 BTU (115V), retrieved Jul 18, 2026.
MiniSplitWarehouse: minisplitwarehouse.com MIA 12k 115v - Cooper & Hunter MIA 12,000 BTU (115V), retrieved Jul 18, 2026.
HVACDirect: HVACDirect product page DIY-12-HP-WM-115D25-O - MRCOOL DIY 5th Gen 12,000 BTU (115V), retrieved Jul 18, 2026.
HVACDirect: HVACDirect product page DIY-12-HP-WM-115D25-O - MRCOOL DIY 5th Gen 12,000 BTU (115V), retrieved Jul 27, 2026.
MRCOOL: MRCOOL DIY Series Single-Zone Mini-Split System Installation & Owner's Manual - MRCOOL DIY 5th Gen 12,000 BTU (115V), retrieved Aug 17, 2026.
MRCOOL: MRCOOL R454B DIY-5 submittal - MRCOOL DIY 5th Gen 12,000 BTU (115V), retrieved Jul 18, 2026.

Whichever system you pick, compare the installed total and any electrical work before you choose.

Get installation quotes

Frequently asked questions

What electrical difference should I check first in this comparison?: Start with the published voltage requirements: MRCOOL DIY 5th Gen 12,000 BTU (115V): 115V; Cooper & Hunter MIA 12,000 BTU (115V): 115V. A 115V label can make a retrofit easier, while a 230V system still needs the right dedicated circuit and local code review.