# Mitsubishi Electric SUZ ducted, cassette and floor Hyper-Heating 15,000 BTU concealed duct system (SEZ-AD)

> Mitsubishi Electric SUZ ducted, cassette and floor Hyper-Heating 15,000 BTU concealed duct system (SEZ-AD) (SUZ-AA15NLHZ / SEZ-AD15NL) is a 15,000 BTU system from Mitsubishi Electric SUZ ducted, cassette and floor. It has a concealed duct indoor unit, runs on 208/230V, is rated 16.2 SEER2, has an HSPF2 of 9.8, puts out 18,000 BTU/h of heat at 5 °F, uses R-454B refrigerant, and carries a 10-year compressor warranty. Lowest in-stock price on file: $4,231.50 at HVACDirect (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-hyper-heat-duct-sez-ad/

## Specifications

| Spec | Value | Source |
|---|---|---|
| Model number | SUZ-AA15NLHZ / SEZ-AD15NL | [hvacdirect.com](https://hvacdirect.com/15-000-btu-mitsubishi-sez-ad-hyper-heat-16-9-seer2-single-zone-mini-split-heat-pump-system-r454b-216065.html) (retailer, page, 2026-10-14) |
| Size | 15,000 BTU/h | [hvacdirect.com](https://hvacdirect.com/15-000-btu-mitsubishi-sez-ad-hyper-heat-16-9-seer2-single-zone-mini-split-heat-pump-system-r454b-216065.html) (retailer, page, 2026-10-14) |
| Indoor unit style | Concealed duct | [hvacdirect.com](https://hvacdirect.com/15-000-btu-mitsubishi-sez-ad-hyper-heat-16-9-seer2-single-zone-mini-split-heat-pump-system-r454b-216065.html) (retailer, page, 2026-10-14) |
| Voltage | 208/230V | [hvacdirect.com](https://hvacdirect.com/15-000-btu-mitsubishi-sez-ad-hyper-heat-16-9-seer2-single-zone-mini-split-heat-pump-system-r454b-216065.html) (retailer, page, 2026-10-14) |
| Outdoor unit model | SUZ-AA15NLHZ | [hvacdirect.com](https://hvacdirect.com/15-000-btu-mitsubishi-sez-ad-hyper-heat-16-9-seer2-single-zone-mini-split-heat-pump-system-r454b-216065.html) (retailer, page, 2026-10-14) |
| Indoor unit model | SEZ-AD15NL | [hvacdirect.com](https://hvacdirect.com/15-000-btu-mitsubishi-sez-ad-hyper-heat-16-9-seer2-single-zone-mini-split-heat-pump-system-r454b-216065.html) (retailer, page, 2026-10-14) |
| SEER2 (cooling efficiency) | 16.2 | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/4016060) (certification, feed, 2026-10-14) |
| EER2 (efficiency at 95 °F) | 12.2 | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/4016060) (certification, feed, 2026-10-14) |
| HSPF2 (heating efficiency) | 9.8 | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/4016060) (certification, feed, 2026-10-14) |
| Rated cooling capacity | 15,000 BTU/h | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/4016060) (certification, feed, 2026-10-14) |
| Heating capacity at 47 °F | 15,000 BTU/h | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/4016060) (certification, feed, 2026-10-14) |
| Heating capacity at 17 °F | 11,700 BTU/h | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/4016060) (certification, feed, 2026-10-14) |
| Heating capacity at 5 °F | 18,000 BTU/h | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/4016060) (certification, feed, 2026-10-14) |
| COP at 5 °F | 2 | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/4016060) (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/4016060) (certification, feed, 2026-10-14) |
| ENERGY STAR certified | yes | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/4016060) (certification, feed, 2026-10-14) |
| ENERGY STAR cold climate | yes | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/4016060) (certification, feed, 2026-10-14) |
| Line connection | not published |  |
| Wi-Fi control | not published |  |
| Indoor sound level (quietest) | not published |  |
| Outdoor sound level | 55 dB(A) | [hvacdirect.com](https://hvacdirect.com/15-000-btu-mitsubishi-sez-ad-hyper-heat-16-9-seer2-single-zone-mini-split-heat-pump-system-r454b-216065.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) | 33.06 × 13 × 34.63 in | [hvacdirect.com](https://hvacdirect.com/15-000-btu-mitsubishi-sez-ad-hyper-heat-16-9-seer2-single-zone-mini-split-heat-pump-system-r454b-216065.html) (retailer, page, 2026-10-14) |
| Indoor unit size (W×D×H) | 39 × 27.56 × 7.88 in | [hvacdirect.com](https://hvacdirect.com/15-000-btu-mitsubishi-sez-ad-hyper-heat-16-9-seer2-single-zone-mini-split-heat-pump-system-r454b-216065.html) (retailer, page, 2026-10-14) |
| Outdoor unit weight | 115 lb | [hvacdirect.com](https://hvacdirect.com/15-000-btu-mitsubishi-sez-ad-hyper-heat-16-9-seer2-single-zone-mini-split-heat-pump-system-r454b-216065.html) (retailer, page, 2026-10-14) |

## Where to buy

| Store | Price (USD) | Availability | Checked | Link |
|---|---|---|---|---|
| HVACDirect | $4,231.50 | in stock | 2026-10-14 | [View at HVACDirect](https://hvacdirect.com/15-000-btu-mitsubishi-sez-ad-hyper-heat-16-9-seer2-single-zone-mini-split-heat-pump-system-r454b-216065.html) |
| Got Ductless | $4,390.25 | in stock | 2026-10-14 | [View at Got Ductless](https://gotductless.com/products/mitsubishi-sez-ad15nl-suz-aa15nlhz-15-000-btu-horizontal-ducted-hyper-heat-system) |

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.