# Mitsubishi Electric SUZ ducted, cassette and floor 15,000 BTU ceiling cassette system (SLZ-AF)

> Mitsubishi Electric SUZ ducted, cassette and floor 15,000 BTU ceiling cassette system (SLZ-AF) (SUZ-AA15NL / SLZ-AF15NL) is a 15,000 BTU system from Mitsubishi Electric SUZ ducted, cassette and floor. It has a ceiling cassette indoor unit, runs on 208/230V, is rated 20.6 SEER2, has an HSPF2 of 10.1, puts out 9,600 BTU/h of heat at 5 °F, uses R-454B refrigerant, and carries a 10-year compressor warranty. Lowest in-stock price on file: $3,979.85 at Got Ductless (checked Oct 14, 2026).

- Line: [Mitsubishi Electric SUZ ducted, cassette and floor](https://minisplitfacts.com/lines/mitsubishi-suz/)
- Category: [Single-zone systems](https://minisplitfacts.com/compare/single-zone/)
- Size tier within its line: 15k
- 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/mitsubishi-suz-15k-cassette-slz-af/

## Specifications

| Spec | Value | Source |
|---|---|---|
| Model number | SUZ-AA15NL / SLZ-AF15NL | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-p-series-20-6-seer2-single-ceiling-cassette-mini-split-heat-pump-system-r454b-suz-aa15nl-slz-af15nl-199211.html) (retailer, page, 2026-10-14) |
| Size | 15,000 BTU/h | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-p-series-20-6-seer2-single-ceiling-cassette-mini-split-heat-pump-system-r454b-suz-aa15nl-slz-af15nl-199211.html) (retailer, page, 2026-10-14) |
| Indoor unit style | Ceiling cassette | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-p-series-20-6-seer2-single-ceiling-cassette-mini-split-heat-pump-system-r454b-suz-aa15nl-slz-af15nl-199211.html) (retailer, page, 2026-10-14) |
| Voltage | 208/230V | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-p-series-20-6-seer2-single-ceiling-cassette-mini-split-heat-pump-system-r454b-suz-aa15nl-slz-af15nl-199211.html) (retailer, page, 2026-10-14) |
| Outdoor unit model | SUZ-AA15NL | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-p-series-20-6-seer2-single-ceiling-cassette-mini-split-heat-pump-system-r454b-suz-aa15nl-slz-af15nl-199211.html) (retailer, page, 2026-10-14) |
| Indoor unit model | SLZ-AF15NL | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-p-series-20-6-seer2-single-ceiling-cassette-mini-split-heat-pump-system-r454b-suz-aa15nl-slz-af15nl-199211.html) (retailer, page, 2026-10-14) |
| SEER2 (cooling efficiency) | 20.6 | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3995867) (certification, feed, 2026-10-14) |
| EER2 (efficiency at 95 °F) | 12 | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3995867) (certification, feed, 2026-10-14) |
| HSPF2 (heating efficiency) | 10.1 | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3995867) (certification, feed, 2026-10-14) |
| Rated cooling capacity | 15,000 BTU/h | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3995867) (certification, feed, 2026-10-14) |
| Heating capacity at 47 °F | 18,000 BTU/h | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3995867) (certification, feed, 2026-10-14) |
| Heating capacity at 17 °F | 11,300 BTU/h | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3995867) (certification, feed, 2026-10-14) |
| Heating capacity at 5 °F | 9,600 BTU/h | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3995867) (certification, feed, 2026-10-14) |
| COP at 5 °F | 2 | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3995867) (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/3995867) (certification, feed, 2026-10-14) |
| ENERGY STAR certified | yes | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3995867) (certification, feed, 2026-10-14) |
| ENERGY STAR cold climate | no | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3995867) (certification, feed, 2026-10-14) |
| Line connection | not published |  |
| Wi-Fi control | not published |  |
| Indoor sound level (quietest) | not published |  |
| Outdoor sound level | 51 dB(A) | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-p-series-20-6-seer2-single-ceiling-cassette-mini-split-heat-pump-system-r454b-suz-aa15nl-slz-af15nl-199211.html) (retailer, page, 2026-10-14) |
| Compressor warranty | 10 years | [dw2p0k56b2hr9.cloudfront.net](https://dw2p0k56b2hr9.cloudfront.net/Residential_M_Series_P_Series_and_SMART_MULTI_Split_Air_Conditioner_and_Heat_Pump_Systems_V3_1b7be81e7d.pdf) (brand, pdf, 2026-10-14) |
| Parts warranty | 10 years | [dw2p0k56b2hr9.cloudfront.net](https://dw2p0k56b2hr9.cloudfront.net/Residential_M_Series_P_Series_and_SMART_MULTI_Split_Air_Conditioner_and_Heat_Pump_Systems_V3_1b7be81e7d.pdf) (brand, pdf, 2026-10-14) |
| Warranty if you install it yourself | Licensed installer required | [mitsubishicomfort.com](https://mitsubishicomfort.com/internet-sales) (brand, page, 2026-10-14) |
| Outdoor unit size (W×D×H) | 31.5 × 11.25 × 21.62 in | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-p-series-20-6-seer2-single-ceiling-cassette-mini-split-heat-pump-system-r454b-suz-aa15nl-slz-af15nl-199211.html) (retailer, page, 2026-10-14) |
| Indoor unit size (W×D×H) | 22.44 × 22.44 × 8.25 in | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-p-series-20-6-seer2-single-ceiling-cassette-mini-split-heat-pump-system-r454b-suz-aa15nl-slz-af15nl-199211.html) (retailer, page, 2026-10-14) |
| Outdoor unit weight | 81 lb | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-p-series-20-6-seer2-single-ceiling-cassette-mini-split-heat-pump-system-r454b-suz-aa15nl-slz-af15nl-199211.html) (retailer, page, 2026-10-14) |

## Where to buy

| Store | Price (USD) | Availability | Checked | Link |
|---|---|---|---|---|
| Got Ductless | $3,979.85 | in stock | 2026-10-14 | [View at Got Ductless](https://gotductless.com/products/mitsubishi-slz-af15nl-suz-aa15nl-15-000-btu-four-way-ceiling-cassette-system-w-standard-grille) |
| HVACDirect | $4,320.50 | in stock | 2026-10-14 | [View at HVACDirect](https://hvacdirect.com/15000-btu-mitsubishi-p-series-20-6-seer2-single-ceiling-cassette-mini-split-heat-pump-system-r454b-suz-aa15nl-slz-af15nl-199211.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 (15k), different line:

- [Daikin Aurora 15,000 BTU wall mount system](https://minisplitfacts.com/products/daikin-aurora-15k-wall/) — $2,382
- [Mitsubishi Electric EX Hyper-Heating 15,000 BTU wall mount system](https://minisplitfacts.com/products/mitsubishi-ex-15k-hyper-heat-wall/) — $1,087.50
- [Mitsubishi Electric EX 15,000 BTU wall mount system](https://minisplitfacts.com/products/mitsubishi-ex-15k-wall/) — $3,254.47
- [Mitsubishi Electric FX Hyper-Heating 15,000 BTU wall mount system](https://minisplitfacts.com/products/mitsubishi-fx-15k-hyper-heat-wall/) — $3,633.75
- [Mitsubishi Electric GX Hyper-Heating 15,000 BTU wall mount system](https://minisplitfacts.com/products/mitsubishi-gx-15k-hyper-heat-wall/) — $3,242.25
- [Mitsubishi Electric GX 15,000 BTU wall mount system](https://minisplitfacts.com/products/mitsubishi-gx-15k-wall/) — $2,949
- [Senville AURA 15,000 BTU wall mount system](https://minisplitfacts.com/products/senville-aura-15k-wall/) — $1,499.99


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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.