TCL H8W4KW-CA
window air conditioner · 8,000 BTU cooling · fits ~400 sq ft
A window AC rated 8,000 BTU — enough cooling for a room of roughly 400 square feet (the 20-BTU-per-square-foot rule).
What actually decides this purchase
We publish 84 units at 8,000 BTU. They run within $15 a year of each other — but they sell for $254 to $549, a 2.2× spread. Efficiency is not what decides this purchase at 8,000 BTU; price, noise and whether it fits your window are. Here is where this unit lands.
At $370 this is at or under the 8,000 BTU median of $379, which is the half of the decision that moves real money — every unit at this size runs within $15 a year of every other, so the efficiency ranking below is a tiebreak, not the argument. Worth comparing against the Hisense AHW0823TW1W at $254 and the Friedrich CCV08A10A at 32 dBA for $499.
Price
$370
15th cheapest of the 56 units we have a price for at this size (median $379). Checked 2026-08-20.
Noise
32–40 dBA
Manufacturer-published, not a certified test; across the 12 units at this size we have figures for, the quietest setting ranges 32–45 dBA.
Window fit
24–36" 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.
Buy this unit
$369.99 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 8,000 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 ~400 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 2025-01-15
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 8,000 BTU class runs within $15 a year of every other. The gap between the cheapest and dearest to buy at this size is 20× 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 8,000 BTU right for my room, or should I size up?
About 400 square feet is the guide figure, and 84 certified units sit on that shelf. The next shelf up is 9,000 BTU (6 units), about 450 sq ft. Below it, 6,000 BTU (17 units) covers about 300 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.
Will the TCL H8W4KW-CA fit my window?
Measure your window opening first — it needs to be at least 24" wide (the cabinet width), and the unit is about 16" tall and 21" deep, roughly 62 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.