# MRCOOL Advantage 5th Gen 9,000 BTU 115V wall mount system

> MRCOOL Advantage 5th Gen 9,000 BTU 115V wall mount system (A-09-HP-115D-O) is a 9,000 BTU system from MRCOOL Advantage 5th Gen. It has a wall mount indoor unit, runs on 115V, is rated 21.5 SEER2, has an HSPF2 of 9, puts out 6,500 BTU/h of heat at 5 °F, uses R-454B refrigerant, and comes with a 16 ft line set. Lowest in-stock price on file: $799 at HVACDirect (checked Oct 14, 2026).

- Line: [MRCOOL Advantage 5th Gen](https://minisplitfacts.com/lines/mrcool-advantage/)
- Category: [Single-zone systems](https://minisplitfacts.com/compare/single-zone/)
- Size tier within its line: 9k
- Status: current
- Data confidence: confirmed (last verified 2026-10-14; [what this means](https://minisplitfacts.com/how-we-compare/#confidence))
- Page: https://minisplitfacts.com/products/mrcool-advantage-9k-115v-wall/

## Specifications

| Spec | Value | Source |
|---|---|---|
| Model number | A-09-HP-115D-O | [hvacdirect.com](https://hvacdirect.com/9-000-btu-mrcool-advantage-5th-gen-21-5-seer2-single-zone-mini-split-system-r454b-115v-id198419.html) (retailer, page, 2026-10-14) |
| Size | 9,000 BTU/h | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-cat-en-01.pdf) (brand, pdf, 2026-10-14) |
| Indoor unit style | Wall mount | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-cat-en-01.pdf) (brand, pdf, 2026-10-14) |
| Voltage | 115V | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-cat-en-01.pdf) (brand, pdf, 2026-10-14) |
| Outdoor unit model | A-09-HP-C-115D-O | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-cat-en-01.pdf) (brand, pdf, 2026-10-14) |
| Indoor unit model | A-09-HP-WMAH-115D-O | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-cat-en-01.pdf) (brand, pdf, 2026-10-14) |
| SEER2 (cooling efficiency) | 21.5 | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3798966) (certification, feed, 2026-10-14) |
| EER2 (efficiency at 95 °F) | 12.5 | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3798966) (certification, feed, 2026-10-14) |
| HSPF2 (heating efficiency) | 9 | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3798966) (certification, feed, 2026-10-14) |
| Rated cooling capacity | 9,000 BTU/h | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3798966) (certification, feed, 2026-10-14) |
| Heating capacity at 47 °F | 10,000 BTU/h | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3798966) (certification, feed, 2026-10-14) |
| Heating capacity at 17 °F | 8,000 BTU/h | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3798966) (certification, feed, 2026-10-14) |
| Heating capacity at 5 °F | 6,500 BTU/h | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3798966) (certification, feed, 2026-10-14) |
| COP at 5 °F | 1.96 | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3798966) (certification, feed, 2026-10-14) |
| Heats down to | not published |  |
| Refrigerant | R-454B | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3798966) (certification, feed, 2026-10-14) |
| ENERGY STAR certified | yes | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3798966) (certification, feed, 2026-10-14) |
| ENERGY STAR cold climate | no | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3798966) (certification, feed, 2026-10-14) |
| Line connection | not published |  |
| Line set included | 16 ft | [hvacdirect.com](https://hvacdirect.com/9-000-btu-mrcool-advantage-5th-gen-21-5-seer2-single-zone-mini-split-system-r454b-115v-id198419.html) (retailer, page, 2026-10-14) |
| Wi-Fi control | not published |  |
| Indoor sound level (quietest) | not published |  |
| Outdoor sound level | 52.5 dB(A) | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-cat-en-01.pdf) (brand, pdf, 2026-10-14) |
| Room size (brand's claim) | 400 sq ft | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-cat-en-01.pdf) (brand, pdf, 2026-10-14) |
| Compressor warranty | not published |  |
| Parts warranty | not published |  |
| Warranty if you install it yourself | not published |  |
| Outdoor unit size (W×D×H) | 30.12 × 11.93 × 21.85 in | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-cat-en-01.pdf) (brand, pdf, 2026-10-14) |
| Indoor unit size (W×D×H) | 28.43 × 7.36 × 11.42 in | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-cat-en-01.pdf) (brand, pdf, 2026-10-14) |
| Outdoor unit weight | 56.66 lb | [doxrepo.mrcool.com](https://doxrepo.mrcool.com/mc-cat-en-01.pdf) (brand, pdf, 2026-10-14) |

## Where to buy

| Store | Price (USD) | Availability | Checked | Link |
|---|---|---|---|---|
| HVACDirect | $799 | in stock | 2026-10-14 | [View at HVACDirect](https://hvacdirect.com/9-000-btu-mrcool-advantage-5th-gen-21-5-seer2-single-zone-mini-split-system-r454b-115v-id198419.html) |

Prices are re-checked weekly; a date more than a month old means the store could not be re-read.

## The equivalent in other lines

Same category, same size tier (9k), different line:

- [ACiQ Extreme 9,000 BTU ceiling cassette system](https://minisplitfacts.com/products/aciq-extreme-9k-cassette/) — $1,849.99
- [ACiQ Extreme 9,000 BTU slim ceiling cassette system](https://minisplitfacts.com/products/aciq-extreme-9k-cassette-slim/) — $2,099.99
- [ACiQ Extreme 9,000 BTU floor console system](https://minisplitfacts.com/products/aciq-extreme-9k-console/) — $1,899.99
- [ACiQ Extreme 9,000 BTU concealed duct system](https://minisplitfacts.com/products/aciq-extreme-9k-duct/) — $1,999.99
- [ACiQ Extreme 9,000 BTU wall mount system](https://minisplitfacts.com/products/aciq-extreme-9k-wall/) — $1,499.99
- [ACiQ single-zone 9,000 BTU 115V wall mount system](https://minisplitfacts.com/products/aciq-single-zone-9k-115v-wall/) — $909.99
- [ACiQ single-zone 9,000 BTU wall mount system](https://minisplitfacts.com/products/aciq-single-zone-9k-wall/) — $929.99
- [ACiQ Standard 9,000 BTU 115V wall mount system](https://minisplitfacts.com/products/aciq-standard-9k-115v-wall/) — $959.99


---
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.