Midea MAH09S1AGR
window air conditioner · 9,500 BTU cooling · fits ~475 sq ft
A window AC rated 9,500 BTU — enough cooling for a room of roughly 475 square feet (the 20-BTU-per-square-foot rule).
What actually decides this purchase
We publish 81 units at 10,000 BTU. They run within $27 a year of each other — but they sell for $298 to $619, a 2.1× spread. Efficiency is not what decides this purchase at 10,000 BTU; price, noise and whether it fits your window are. Here is where this unit lands.
At $427 this is at or under the 10,000 BTU median of $427, which is the half of the decision that moves real money — every unit at this size runs within $27 a year of every other, so the efficiency ranking below is a tiebreak, not the argument. Worth comparing against the BLACK+DECKER BD10NWES at $298 and the Friedrich CCV10A10A at 32 dBA for $619.
Price
$427
14th cheapest of the 56 units we have a price for at this size (median $427). Checked 2026-08-20.
Noise
43–51 dBA
Manufacturer-published, not a certified test; across the 15 units at this size we have figures for, the quietest setting ranges 32–43 dBA.
Window fit
Measure first
No trustworthy cabinet width on this certificate, so we will not state a fit range.
Circuit
Standard 115V
Plugs into a normal outlet — no electrician.
We do not have window fit 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
$427.49 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 9,500 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 ~475 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 2025-04-02
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 10,000 BTU class runs within $27 a year of every other. The gap between the cheapest and dearest to buy at this size is 12× 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
Midea is one of the two largest Chinese HVAC OEMs (it builds many US budget brands) offering competitive value and quiet operation, but reliability varies by model and full warranty terms require product registration within 90 days.
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 9,500 BTU right for my room, or should I size up?
About 475 square feet is the guide figure, and 81 certified units sit on that shelf. The next shelf up is 11,000 BTU (4 units), about 550 sq ft. Below it, 9,000 BTU (6 units) covers about 450 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.
Is it worth paying more for a quieter 10,000 BTU unit?
This one is rated 43–51 dBA. The quietest unit at this size we have both a noise figure and a price for is the Friedrich CCV10A10A at 32 dBA, and it costs $192 more. A few dBA is the difference between a unit you can sleep next to and one you turn off to hear the television, and it is the thing owners complain about long after they have forgotten what they paid.
Does the Midea MAH09S1AGR heat as well as cool?
Yes — it is certified with a heating mode, so it works as a shoulder-season heater as well as an air conditioner. Only 30 of the 389 room ACs we publish do. It is supplemental heat for one room, not a replacement for a home heating system.
Does the Midea MAH09S1AGR qualify for efficiency rebates?
It meets ENERGY STAR Most Efficient, the top tier some utility rebate programmes require. 30 of the 81 units in its 10,000 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 Midea MAH09S1AGR fit my window?
The certification record doesn't publish reliable full dimensions for this unit, so measure your opening and compare against the seller's listing before you buy.
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.