# Mitsubishi Electric FX Hyper-Heating 15,000 BTU wall mount system

> Mitsubishi Electric FX Hyper-Heating 15,000 BTU wall mount system (MUZ-FX15NLHZ / MSZ-FX15NL) is a 15,000 BTU system from Mitsubishi Electric FX. It has a wall mount indoor unit, runs on 208/230V, is rated 25.9 SEER2, has an HSPF2 of 11, puts out 22,200 BTU/h of heat at 5 °F, uses R-454B refrigerant, and carries a 10-year compressor warranty. Lowest in-stock price on file: $3,633.75 at HVACDirect (checked Oct 14, 2026).

- Line: [Mitsubishi Electric FX](https://minisplitfacts.com/lines/mitsubishi-fx/)
- 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-fx-15k-hyper-heat-wall/

## Specifications

| Spec | Value | Source |
|---|---|---|
| Model number | MUZ-FX15NLHZ / MSZ-FX15NL | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-fx-series-25-9-seer2-single-wall-mounted-mini-split-hyper-heat-pump-system-r454b-muz-fx15nlhz-msz-fx15nl-199108.html) (retailer, page, 2026-10-14) |
| Size | 15,000 BTU/h | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-fx-series-25-9-seer2-single-wall-mounted-mini-split-hyper-heat-pump-system-r454b-muz-fx15nlhz-msz-fx15nl-199108.html) (retailer, page, 2026-10-14) |
| Indoor unit style | Wall mount | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-fx-series-25-9-seer2-single-wall-mounted-mini-split-hyper-heat-pump-system-r454b-muz-fx15nlhz-msz-fx15nl-199108.html) (retailer, page, 2026-10-14) |
| Voltage | 208/230V | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-fx-series-25-9-seer2-single-wall-mounted-mini-split-hyper-heat-pump-system-r454b-muz-fx15nlhz-msz-fx15nl-199108.html) (retailer, page, 2026-10-14) |
| Outdoor unit model | MUZ-FX15NLHZ | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-fx-series-25-9-seer2-single-wall-mounted-mini-split-hyper-heat-pump-system-r454b-muz-fx15nlhz-msz-fx15nl-199108.html) (retailer, page, 2026-10-14) |
| Indoor unit model | MSZ-FX15NL | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-fx-series-25-9-seer2-single-wall-mounted-mini-split-hyper-heat-pump-system-r454b-muz-fx15nlhz-msz-fx15nl-199108.html) (retailer, page, 2026-10-14) |
| SEER2 (cooling efficiency) | 25.9 | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3629931) (certification, feed, 2026-10-14) |
| EER2 (efficiency at 95 °F) | 14.7 | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3629931) (certification, feed, 2026-10-14) |
| HSPF2 (heating efficiency) | 11 | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3629931) (certification, feed, 2026-10-14) |
| Rated cooling capacity | 15,000 BTU/h | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3629931) (certification, feed, 2026-10-14) |
| Heating capacity at 47 °F | 16,500 BTU/h | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3629931) (certification, feed, 2026-10-14) |
| Heating capacity at 17 °F | 10,600 BTU/h | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3629931) (certification, feed, 2026-10-14) |
| Heating capacity at 5 °F | 22,200 BTU/h | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3629931) (certification, feed, 2026-10-14) |
| COP at 5 °F | 2.06 | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3629931) (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/3629931) (certification, feed, 2026-10-14) |
| ENERGY STAR certified | yes | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3629931) (certification, feed, 2026-10-14) |
| ENERGY STAR cold climate | yes | [energystar.gov](https://www.energystar.gov/productfinder/product/certified-heat-pumps/details/3629931) (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/15000-btu-mitsubishi-fx-series-25-9-seer2-single-wall-mounted-mini-split-hyper-heat-pump-system-r454b-muz-fx15nlhz-msz-fx15nl-199108.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 × 34.62 in | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-fx-series-25-9-seer2-single-wall-mounted-mini-split-hyper-heat-pump-system-r454b-muz-fx15nlhz-msz-fx15nl-199108.html) (retailer, page, 2026-10-14) |
| Indoor unit size (W×D×H) | 39.28 × 9.75 × 12 in | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-fx-series-25-9-seer2-single-wall-mounted-mini-split-hyper-heat-pump-system-r454b-muz-fx15nlhz-msz-fx15nl-199108.html) (retailer, page, 2026-10-14) |
| Outdoor unit weight | 119 lb | [hvacdirect.com](https://hvacdirect.com/15000-btu-mitsubishi-fx-series-25-9-seer2-single-wall-mounted-mini-split-hyper-heat-pump-system-r454b-muz-fx15nlhz-msz-fx15nl-199108.html) (retailer, page, 2026-10-14) |

## Where to buy

| Store | Price (USD) | Availability | Checked | Link |
|---|---|---|---|---|
| HVACDirect | $3,633.75 | in stock | 2026-10-14 | [View at HVACDirect](https://hvacdirect.com/15000-btu-mitsubishi-fx-series-25-9-seer2-single-wall-mounted-mini-split-hyper-heat-pump-system-r454b-muz-fx15nlhz-msz-fx15nl-199108.html) |
| Got Ductless | $3,785.94 | in stock | 2026-10-14 | [View at Got Ductless](https://gotductless.com/products/mitsubishi-msz-fx15nl-muz-fx15nlhz-15-000-btu-hyper-heating-wall-mounted-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 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
- [Mitsubishi Electric SUZ ducted, cassette and floor 15,000 BTU ceiling cassette system (SLZ-AF)](https://minisplitfacts.com/products/mitsubishi-suz-15k-cassette-slz-af/) — $3,979.85
- [Mitsubishi Electric SUZ ducted, cassette and floor 15,000 BTU floor console system (MFZ-KX)](https://minisplitfacts.com/products/mitsubishi-suz-15k-console-mfz-kx/) — $4,255.85
- [Mitsubishi Electric SUZ ducted, cassette and floor 15,000 BTU concealed duct system (PEAD-AA)](https://minisplitfacts.com/products/mitsubishi-suz-15k-duct-pead-aa/) — $4,080.40


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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.