Mitsubishi Electric SUZ ducted, cassette and floor 12,000 BTU concealed duct system (SEZ-AD)
Mitsubishi Electric SUZ ducted, cassette and floor · Single-zone systems · 12,000 BTU
$1,438.50 at Got Ductless · checked Oct 14, 2026
Mitsubishi Electric SUZ ducted, cassette and floor 12,000 BTU concealed duct system (SEZ-AD) (SUZ-AA12NL / SEZ-AD12NL) is a 12,000 BTU system from Mitsubishi Electric SUZ ducted, cassette and floor. It has a concealed duct indoor unit, runs on 208/230V, is rated 19 SEER2, has an HSPF2 of 9.6, puts out 7,800 BTU/h of heat at 5 °F, uses R-454B refrigerant, and carries a 10-year compressor warranty. Lowest in-stock price on file: $1,438.50 at Got Ductless (checked Oct 14, 2026).
| Category | Single-zone systems |
|---|---|
| Model number | SUZ-AA12NL / SEZ-AD12NLhvacdirect.com |
| Size ? | 12,000 BTU/hhvacdirect.com |
| Indoor unit style ? | Concealed ducthvacdirect.com |
| Voltage ? | 208/230Vhvacdirect.com |
| Outdoor unit model | SUZ-AA12NLhvacdirect.com |
| Indoor unit model | SEZ-AD12NLhvacdirect.com |
| SEER2 (cooling efficiency) ? | 19energystar.gov |
| EER2 (efficiency at 95 °F) ? | 12.1energystar.gov |
| HSPF2 (heating efficiency) ? | 9.6energystar.gov |
| Rated cooling capacity ? | 12,000 BTU/henergystar.gov |
| Heating capacity at 47 °F ? | 12,000 BTU/henergystar.gov |
| Heating capacity at 17 °F ? | 9,700 BTU/henergystar.gov |
| Heating capacity at 5 °F ? | 7,800 BTU/henergystar.gov |
| COP at 5 °F ? | 2.3energystar.gov |
| Heats down to ? | — |
| Refrigerant ? | R-454Benergystar.gov |
| ENERGY STAR certified ? | yesenergystar.gov |
| ENERGY STAR cold climate ? | noenergystar.gov |
| Line connection ? | — |
| Wi-Fi control | — |
| Indoor sound level (quietest) | — |
| Outdoor sound level | 51 dB(A)hvacdirect.com |
| Compressor warranty ? | 10 yearsdw2p0k56b2hr9.cloudfront.net |
| Parts warranty ? | 10 yearsdw2p0k56b2hr9.cloudfront.net |
| Warranty if you install it yourself ? | Licensed installer requiredmitsubishicomfort.com |
| Outdoor unit size (W×D×H) | 31.5 × 11.25 × 21.62 inhvacdirect.com |
| Indoor unit size (W×D×H) | 39 × 27.56 × 7.88 inhvacdirect.com |
| Outdoor unit weight | 81 lbhvacdirect.com |
| Sold as | Single product |
| Availability | Sold by several retailers |
Warranty, and installing it yourself
The warranty needs a licensed installer, by Mitsubishi Electric's own terms.
"Our Limited Warranty only applies to Products installed by a licensed contractor."
From mitsubishicomfort.com ↗, read 2026-10-14. Terms change, and local law can require a licensed technician for refrigerant or electrical work whatever the warranty says.
- 10 years on the compressor
- 10 years on parts
"Residential M-Series and P-Series limited warranty statement for products purchased October 25, 2025 to February 8, 2026, the latest residential statement mitsubishicomfort.com/warranties lists for these models: So long as the original purchaser resides in the residence, this Limited Warranty will extend for ten (10) years for parts and the compressor if the following additional conditions are met: (1) the Product is installed in an owner-occupied residence, and (2) the Product is registered within 90 days of installation."
From dw2p0k56b2hr9.cloudfront.net ↗, read 2026-10-14.
Who makes it
confirmed Mitsubishi Electric: Mitsubishi Electric. source ↗
Where to buy
Prices are re-checked every week. A date more than a month old means the store could not be re-read, so the price may have moved.
Price history
Price tracking for this product began October 14, 2026. Prices are re-checked every week, and the chart fills in from the next check.
Every recorded price change (2)
A row is recorded only when a store's price or stock changes; each line then runs to the date the store was last checked. Amazon prices aren't shown (store policy).
Where this came from
confirmed The part number and every spec shown were read from the brand's or a store's own material: a product page, a spec sheet or a product feed, or an archived copy of one. Last verified 2026-10-14. What the labels mean.
The equivalent in other lines
Same category, same size (12k), concealed duct, 208/230V, from other lines; cheapest first, at most two per line. Open any of them side by side with this system, or tick several to compare up to four.
| Logo | Brand | Product | Category | Photo | Price |
|---|---|---|---|---|---|
| DELLA | 12,000 BTU concealed duct system DELLA cassette, duct and floor/ceiling Side by side → | Single-zone systems | $1,199.96 | ||
| Pioneer | 12,000 BTU concealed duct system (RYT-24) Pioneer Quantum Ultra Side by side → | Single-zone systems | $1,413 | ||
| ACiQ | 12,000 BTU concealed duct system ACiQ Standard Side by side → | Single-zone systems | $1,839.99 | ||
| ACiQ | 12,000 BTU concealed duct system ACiQ Extreme Side by side → | Single-zone systems | $2,099.99 | ||
| Gree | 12,000 BTU concealed duct system Gree Vireo Side by side → | Single-zone systems | $2,649 | ||
| Mitsubishi Electric | 12,000 BTU concealed duct system (PEAD-AA) Mitsubishi Electric P-Series Side by side → | Single-zone systems | $2,787 | ||
| Gree | 12,000 BTU concealed duct system Gree Sapphire Side by side → | Single-zone systems | $3,187 | ||
| MRCOOL | 12,000 BTU concealed duct system MRCOOL Olympus Side by side → | Single-zone systems | — |