MiniSplit Facts

MRCOOL DIY 5th Gen vs Mitsubishi Electric GX

Different factories: MRCOOL DIY 5th Gen's certified ratings match models Midea certifies under its own name; Mitsubishi Electric certifies its own units with ENERGY STAR. MRCOOL DIY 5th Gen has 27 products on sale across 3 categories, priced $443 to $3,769. Mitsubishi Electric GX has 12 products on sale across 1 category, priced $1,986.34 to $4,698.75. Largest system: 36,000 BTU/h (MRCOOL DIY 5th Gen 36,000 BTU wall mount system) against 36,000 BTU/h (Mitsubishi Electric GX 36,000 BTU wall mount system). Highest SEER2 (cooling efficiency): 23.9 (MRCOOL DIY 5th Gen 18,000 BTU multi-zone outdoor unit) against 28.4 (Mitsubishi Electric GX Hyper-Heating 9,000 BTU wall mount system). Highest HSPF2 (heating efficiency): 12.2 (MRCOOL DIY 5th Gen Hyper Heat 18,000 BTU ceiling cassette system) against 11 (Mitsubishi Electric GX 15,000 BTU wall mount system). Most heat at 5 °F: 46,000 BTU/h (MRCOOL DIY 5th Gen 55,000 BTU multi-zone outdoor unit) against 21,200 BTU/h (Mitsubishi Electric GX Hyper-Heating 24,000 BTU wall mount system). Longest compressor warranty: 7 years (MRCOOL DIY 5th Gen 9,000 BTU 115V wall mount system) against 10 years (Mitsubishi Electric GX Hyper-Heating 12,000 BTU wall mount system).

At a glance

Fact MRCOOL DIY 5th Gen Mitsubishi Electric GX
Launched 2024 2025
Products on sale2712
CategoriesSingle-zone systems (12), Multi-zone outdoor units (5), Indoor units (10)Single-zone systems (12)
Price range$443 – $3,769cheapest: 6,000 BTU wall mount indoor unit$1,986.34 – $4,698.75cheapest: 36,000 BTU wall mount system
Largest system36,000 BTU/h36,000 BTU wall mount system36,000 BTU/h36,000 BTU wall mount system
Highest SEER2 (cooling efficiency)23.918,000 BTU multi-zone outdoor unit28.4Hyper-Heating 9,000 BTU wall mount system
Highest HSPF2 (heating efficiency)12.2Hyper Heat 18,000 BTU ceiling cassette system1115,000 BTU wall mount system
Most heat at 5 °F46,000 BTU/h55,000 BTU multi-zone outdoor unit21,200 BTU/hHyper-Heating 24,000 BTU wall mount system
Keeps heating in the coldest weather-22 °FHyper Heat 12,000 BTU wall mount systemnone published
Longest compressor warranty7 years9,000 BTU 115V wall mount system10 yearsHyper-Heating 12,000 BTU wall mount system
Warranty if you install it yourselfKepton 27 productsLicensed installer requiredon 12 products
Where soldGot Ductless, HVACDirect, AmazonGot Ductless, HVACDirect

Who makes them?

Different factories: MRCOOL DIY 5th Gen's certified ratings match models Midea certifies under its own name; Mitsubishi Electric certifies its own units with ENERGY STAR.

MRCOOL DIY 5th Gen

14 of MRCOOL DIY 5th Gen's 14 ENERGY STAR certified systems carry certified ratings identical to models Midea certifies under its own name, which points to Midea as the maker (inferred from the certification records; not a statement by MRCOOL).

  • Midea: 14 systems with identical certified ratings

Mitsubishi Electric GX

confirmed Mitsubishi Electric. source ↗

How we work out who makes what →

Part by part

Matched by each product's size tier within its own line, so a row pairs each brand's compact, medium, large or XL piece. Tiers are for lining lineups up; the dimensions say how big each one really is.

Single-zone systems 12 vs 12

TierMRCOOL DIY 5th GenMitsubishi Electric GX
9,000 BTU
9,000 BTU 115V wall mount system 9,000 BTU/h · 23.6 · $2,269
9,000 BTU wall mount system 9,000 BTU/h · 28.4 · $2,241.75
Hyper-Heating 9,000 BTU wall mount system 9,000 BTU/h · 28.4 · $2,466
12,000 BTU
12,000 BTU 115V wall mount system 12,000 BTU/h · 23.5 · $2,288
Hyper Heat 12,000 BTU ceiling cassette system 12,000 BTU/h · 22.2 · —
Hyper Heat 12,000 BTU wall mount system 12,000 BTU/h · 23.5 · $2,532
12,000 BTU wall mount system 12,000 BTU/h · 25.6 · $2,642.98
Hyper-Heating 12,000 BTU wall mount system 12,000 BTU/h · 25.6 · $2,936.41
15,000 BTU —
15,000 BTU wall mount system 15,000 BTU/h · 22.2 · $2,949
Hyper-Heating 15,000 BTU wall mount system 15,000 BTU/h · 22.2 · $3,242.25
18,000 BTU
18,000 BTU ceiling cassette system 18,000 BTU/h · 21.4 · $2,822
18,000 BTU wall mount system 18,000 BTU/h · 22.5 · $2,909
Hyper Heat 18,000 BTU ceiling cassette system 18,000 BTU/h · 19.8 · $2,175
Hyper Heat 18,000 BTU wall mount system 18,000 BTU/h · 21.2 · $3,173
18,000 BTU wall mount system 18,000 BTU/h · 22.5 · $3,518.25
Hyper-Heating 18,000 BTU wall mount system 18,000 BTU/h · 22.5 · $2,674.78
24,000 BTU
24,000 BTU air handler system 24,000 BTU/h · 19.4 · $970
24,000 BTU wall mount system 24,000 BTU/h · 22.7 · $3,229
24,000 BTU wall mount system 24,000 BTU/h · 21.5 · $4,125.75
Hyper-Heating 24,000 BTU wall mount system 24,000 BTU/h · 21.5 · $4,620.75
30,000 BTU —
30,000 BTU wall mount system 30,000 BTU/h · 19.2 · $4,698.75
36,000 BTU
36,000 BTU air handler system 36,000 BTU/h · 15.7 · $1,118
36,000 BTU wall mount system 36,000 BTU/h · 18 · $3,769
36,000 BTU wall mount system 36,000 BTU/h · 18.5 · $1,986.34

All single-zone systems from both brands, side by side →

Only one of them makes

  • MRCOOL DIY 5th Gen only: multi-zone outdoor units, indoor units.

Questions

Are MRCOOL DIY 5th Gen and Mitsubishi Electric GX made by the same company?

Different factories: MRCOOL DIY 5th Gen's certified ratings match models Midea certifies under its own name; Mitsubishi Electric certifies its own units with ENERGY STAR. How we work it out.

Which is cheaper, MRCOOL DIY 5th Gen or Mitsubishi Electric GX?

On the prices we have (as of October 14, 2026), the cheapest MRCOOL DIY 5th Gen system is the 24,000 BTU air handler system at $970, and the cheapest Mitsubishi Electric GX system is the 36,000 BTU wall mount system at $1,986.34. Prices are re-checked weekly.

Which has more products, MRCOOL DIY 5th Gen or Mitsubishi Electric GX?

MRCOOL DIY 5th Gen: 27 products on sale across 3 categories. Mitsubishi Electric GX: 12 across 1.

Which is more efficient at cooling, MRCOOL DIY 5th Gen or Mitsubishi Electric GX?

By the brands' own figures: 23.9 for MRCOOL DIY 5th Gen (18,000 BTU multi-zone outdoor unit) and 28.4 for Mitsubishi Electric GX (Hyper-Heating 9,000 BTU wall mount system). Seasonal cooling efficiency under the 2023 test procedure. Higher uses less electricity.

Which is more efficient at heating, MRCOOL DIY 5th Gen or Mitsubishi Electric GX?

By the brands' own figures: 12.2 for MRCOOL DIY 5th Gen (Hyper Heat 18,000 BTU ceiling cassette system) and 11 for Mitsubishi Electric GX (15,000 BTU wall mount system). Seasonal heating efficiency under the 2023 test procedure. Higher uses less electricity.

Which puts out more heat at 5 °F, MRCOOL DIY 5th Gen or Mitsubishi Electric GX?

By the brands' own figures: 46,000 BTU/h for MRCOOL DIY 5th Gen (55,000 BTU multi-zone outdoor unit) and 21,200 BTU/h for Mitsubishi Electric GX (Hyper-Heating 24,000 BTU wall mount system). Heat output with 5 °F outdoors, from the certification record. Published for units certified for cold climates.

Which has the longer compressor warranty, MRCOOL DIY 5th Gen or Mitsubishi Electric GX?

By the brands' own figures: 7 years for MRCOOL DIY 5th Gen (9,000 BTU 115V wall mount system) and 10 years for Mitsubishi Electric GX (Hyper-Heating 12,000 BTU wall mount system). Years of compressor coverage under the brand's warranty, often only when registered. Conditions are on the product page.

Which has the better warranty if you install it yourself, MRCOOL DIY 5th Gen or Mitsubishi Electric GX?

MRCOOL DIY 5th Gen publishes Kept on 27 of its 27 products; Mitsubishi Electric GX publishes Licensed installer required on 12 of its 12 products. What the brand's warranty says when the owner installs the unit: kept, reduced, or void without a licensed installer. The quote is on the product page.

Answered from the catalogue data, as of October 14, 2026. How we compare.

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