# DELLA Optima CloudAir vs MRCOOL DIY 5th Gen

> Different factories: DELLA Optima CloudAir's certified ratings match models TCL certifies under its own name; MRCOOL DIY 5th Gen's certified ratings match models Midea certifies under its own name. DELLA Optima CloudAir has 5 products on sale across 1 category, priced $899.96 to $1,804.96. MRCOOL DIY 5th Gen has 27 products on sale across 3 categories, priced $443 to $3,769. Largest system: 23,000 BTU/h (DELLA Optima CloudAir 23,000 BTU wall mount system) against 36,000 BTU/h (MRCOOL DIY 5th Gen 36,000 BTU wall mount system). Highest SEER2 (cooling efficiency): 24 (DELLA Optima CloudAir 12,000 BTU wall mount system) against 23.9 (MRCOOL DIY 5th Gen 18,000 BTU multi-zone outdoor unit). Highest HSPF2 (heating efficiency): 10 (DELLA Optima CloudAir 18,000 BTU wall mount system) against 12.2 (MRCOOL DIY 5th Gen Hyper Heat 18,000 BTU ceiling cassette system). Most heat at 5 °F: 18,600 BTU/h (DELLA Optima CloudAir 23,000 BTU wall mount system) against 46,000 BTU/h (MRCOOL DIY 5th Gen 55,000 BTU multi-zone outdoor unit). Keeps heating in the coldest weather: -13 °F (DELLA Optima CloudAir 23,000 BTU wall mount system) against -22 °F (MRCOOL DIY 5th Gen Hyper Heat 12,000 BTU wall mount system).

| | [DELLA Optima CloudAir](https://minisplitfacts.com/lines/della-optima-cloudair/) | [MRCOOL DIY 5th Gen](https://minisplitfacts.com/lines/mrcool-diy-5th-gen/) |
|---|---|---|
| Launched | 2025 | 2024 |
| Products on sale | 5 | 27 |
| Categories | Single-zone systems (5) | Single-zone systems (12), Multi-zone outdoor units (5), Indoor units (10) |
| Price range | $899.96 – $1,804.96 | $443 – $3,769 |
| Largest system | 23,000 BTU/h (23,000 BTU wall mount system) | 36,000 BTU/h (36,000 BTU wall mount system) |
| Highest SEER2 (cooling efficiency) | 24 (12,000 BTU wall mount system) | 23.9 (18,000 BTU multi-zone outdoor unit) |
| Highest HSPF2 (heating efficiency) | 10 (18,000 BTU wall mount system) | 12.2 (Hyper Heat 18,000 BTU ceiling cassette system) |
| Most heat at 5 °F | 18,600 BTU/h (23,000 BTU wall mount system) | 46,000 BTU/h (55,000 BTU multi-zone outdoor unit) |
| Keeps heating in the coldest weather | -13 °F (23,000 BTU wall mount system) | -22 °F (Hyper Heat 12,000 BTU wall mount system) |
| Longest compressor warranty | none published | 7 years (9,000 BTU 115V wall mount system) |
| Warranty if you install it yourself | Kept on 5 products | Kept on 27 products |
| Where sold | DELLA, Amazon | Got Ductless, HVACDirect, Amazon |

## Questions

**Are DELLA Optima CloudAir and MRCOOL DIY 5th Gen made by the same company?**
Different factories: DELLA Optima CloudAir's certified ratings match models TCL certifies under its own name; MRCOOL DIY 5th Gen's certified ratings match models Midea certifies under its own name. [How we work it out](https://minisplitfacts.com/who-makes/).

**Which is cheaper, DELLA Optima CloudAir or MRCOOL DIY 5th Gen?**
On the prices we have (as of October 14, 2026), the cheapest DELLA Optima CloudAir system is the [9,000 BTU 115V wall mount system](https://minisplitfacts.com/products/della-optima-cloudair-9k-115v-wall/) at $899.96, and the cheapest MRCOOL DIY 5th Gen system is the [24,000 BTU air handler system](https://minisplitfacts.com/products/mrcool-diy-5th-gen-24k-air-handler/) at $970. Prices are re-checked weekly.

**Which has more products, DELLA Optima CloudAir or MRCOOL DIY 5th Gen?**
DELLA Optima CloudAir: 5 products on sale across 1 categories. MRCOOL DIY 5th Gen: 27 across 3.

**Which is more efficient at cooling, DELLA Optima CloudAir or MRCOOL DIY 5th Gen?**
By the brands' own figures: 24 for DELLA Optima CloudAir ([12,000 BTU wall mount system](https://minisplitfacts.com/products/della-optima-cloudair-12k-wall/)) and 23.9 for MRCOOL DIY 5th Gen ([18,000 BTU multi-zone outdoor unit](https://minisplitfacts.com/products/mrcool-diy-5th-gen-18k-multi-zone-outdoor/)). Seasonal cooling efficiency under the 2023 test procedure. Higher uses less electricity.

**Which is more efficient at heating, DELLA Optima CloudAir or MRCOOL DIY 5th Gen?**
By the brands' own figures: 10 for DELLA Optima CloudAir ([18,000 BTU wall mount system](https://minisplitfacts.com/products/della-optima-cloudair-18k-wall/)) and 12.2 for MRCOOL DIY 5th Gen ([Hyper Heat 18,000 BTU ceiling cassette system](https://minisplitfacts.com/products/mrcool-diy-5th-gen-18k-hyper-heat-cassette/)). Seasonal heating efficiency under the 2023 test procedure. Higher uses less electricity.

**Which puts out more heat at 5 °F, DELLA Optima CloudAir or MRCOOL DIY 5th Gen?**
By the brands' own figures: 18,600 BTU/h for DELLA Optima CloudAir ([23,000 BTU wall mount system](https://minisplitfacts.com/products/della-optima-cloudair-23k-wall/)) and 46,000 BTU/h for MRCOOL DIY 5th Gen ([55,000 BTU multi-zone outdoor unit](https://minisplitfacts.com/products/mrcool-diy-5th-gen-55k-multi-zone-outdoor/)). Heat output with 5 °F outdoors, from the certification record. Published for units certified for cold climates.

**Which keeps heating in colder weather, DELLA Optima CloudAir or MRCOOL DIY 5th Gen?**
By the brands' own figures: -13 °F for DELLA Optima CloudAir ([23,000 BTU wall mount system](https://minisplitfacts.com/products/della-optima-cloudair-23k-wall/)) and -22 °F for MRCOOL DIY 5th Gen ([Hyper Heat 12,000 BTU wall mount system](https://minisplitfacts.com/products/mrcool-diy-5th-gen-12k-hyper-heat-wall/)). The lowest outdoor temperature the brand says it will still heat at. Output at that temperature is far below its rating.

**Which has the better warranty if you install it yourself, DELLA Optima CloudAir or MRCOOL DIY 5th Gen?**
DELLA Optima CloudAir publishes Kept on 5 of its 5 products; MRCOOL DIY 5th Gen publishes Kept on 27 of its 27 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.

Full product lists with specs and sources: [DELLA Optima CloudAir](https://minisplitfacts.com/lines/della-optima-cloudair/index.md), [MRCOOL DIY 5th Gen](https://minisplitfacts.com/lines/mrcool-diy-5th-gen/index.md). Page: https://minisplitfacts.com/vs/della-optima-cloudair-vs-mrcool-diy/

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MiniSplit Facts lists modular tool storage from every brand side by side, with a source for every spec. [How we compare](https://minisplitfacts.com/how-we-compare/). Data as of 2026-10-14.