TCL T12WV9SB
window air conditioner · 12,000 BTU cooling · fits ~600 sq ft
A window AC rated 12,000 BTU — enough cooling for a room of roughly 600 square feet (the 20-BTU-per-square-foot rule).
What actually decides this purchase
We publish 91 units at 12,000 BTU. They run within $22 a year of each other — but they sell for $350 to $1,348, a 3.9× spread. Efficiency is not what decides this purchase at 12,000 BTU; price, noise and whether it fits your window are. Here is where this unit lands.
At $350 this is at or under the 12,000 BTU median of $490, which is the half of the decision that moves real money — every unit at this size runs within $22 a year of every other, so the efficiency ranking below is a tiebreak, not the argument. Worth comparing against the TCL H12W4KW at $350 and the Friedrich CCV12A10A at 32 dBA for $600.
Price
$350
The cheapest of the 70 units we have a price for at this size (median $490). Checked 2026-08-20.
Noise
Not published
The maker publishes no dBA figure we could verify, and noise is not part of the DOE certification. It is the most common complaint about window units, so treat its absence as a real unknown.
Window fit
26–36" wide
From the manufacturer's submittal sheet — the range the unit is designed to fit.
Circuit
Standard 115V
Plugs into a normal outlet — no electrician.
We do not have noise for this unit and will not estimate it. Everything above that carries a number is from a certification record or the manufacturer's own published sheet.
Buy this unit
$349.99 at Amazon
A window AC is a self-install unit: you set it in the window (or wall sleeve), no contractor or refrigerant charge needed. We verified this listing against the certified record: same brand, the same 12,000 BTU cooling capacity, the same window AC form factor, and in stock at the price shown. Its title doesn’t carry this model number, so treat it as the current equivalent rather than a guaranteed identical SKU.
Sized for ~600 sq ft — measure your room and check your window type before you buy.
Check current price →Affiliate link. We may earn a commission — it never changes your price or our specs. Links to the listing we verified against this unit’s certified brand, capacity and form factor; price can change at Amazon.
The Verified Label — every certified spec
certified 2025-11-11
status: Active
Cooling & efficiency — source: ENERGY STAR / DOE
Fit & install — does it fit your window?
Efficiency & running cost — computed by Verified HVAC Data
Worth keeping in proportion: every unit in the 12,000 BTU class runs within $22 a year of every other. The gap between the cheapest and dearest to buy at this size is 46× larger. Efficiency is the smallest number on this page, which is why it is not at the top of it.
Refrigerant & identity
Brand, warranty & reliability
A large Chinese electronics maker selling low-cost mini-splits; units cool well and reviewers like the smart features, but the HVAC track record is short and the North American dealer/parts network is thin.
Reliability is our read of published brand assessments (source), not a certified rating — real-world dependability hinges on a correct install more than the brand. Warranty terms are the manufacturer's (policy) and almost always require online registration within 60–90 days for the full length.
Compare similar room ACs
Frequently asked questions
Is 12,000 BTU right for my room, or should I size up?
About 600 square feet is the guide figure, and 91 certified units sit on that shelf. The next shelf up is 13,000 BTU (5 units), about 650 sq ft. Below it, 11,000 BTU (4 units) covers about 550 sq ft. Between two shelves, take the smaller one: oversizing is the usual reason a unit cools but leaves the room clammy, which our sizing calculator explains.
Does the TCL T12WV9SB qualify for efficiency rebates?
It meets ENERGY STAR Most Efficient, the top tier some utility rebate programmes require. 20 of the 91 units in its 12,000 BTU class reach that tier, so it is one of several options at this size. Rebates are set by your state and utility, not by the manufacturer — check the programmes for your area.
Will the TCL T12WV9SB fit my window?
Measure your window opening first — it needs to be at least 20" wide (the cabinet width), and the unit is about 15" tall and 22" deep, roughly 52 lb. Most double-hung windows fit units in this range with the included side panels, but confirm your window's inside width and minimum height.
Sources. Certification and CEER from ENERGY STAR room-AC data and the DOE compliance certification database. Cooling capacity, dimensions and refrigerant are the manufacturer-certified values. Annual running cost, suggested room size and the percentile are computed by Verified HVAC Data from published ratings and EIA U.S. average electricity prices — see our methodology. Refrigerant GWP is the IPCC value. We publish no star ratings and take no payment for placement. "Not published" means the source registry doesn't disclose it — we never fill a spec with a guess.