8,000 BTU through-the-wall air conditioner
Midea MT08VB1
Very good efficiency for its size: a CEER of 14.1 ranks #2 of 15 through-the-wall air conditioners.
It cools a room of about 250-350 sq ft, draws about 567 watts and costs about $77 a year to run at typical U.S. use and prices.
- CEER
- 14.1 Combined efficiency, higher is betterVery good · beats 83%
- Cooling
- 8,000 BTU/hFor about 250-350 sq ft
- Energy use
- 426 kWh/yr47% less than the federal minimum
- Unit size
- 24.1" wide 14.7" high, 20.9" deep, 54 lb
A good fit if…
- You want low bills - its CEER beats 83% of through-the-wall air conditioners.
- You want to plug it into an ordinary outlet - it runs on 115 V.
- You want the very top tier - it meets the ENERGY STAR Most Efficient criteria.
Think twice if…
- You also need heat - it cools only.
- You want to mount it in a window - it needs a wall sleeve.
Calculate my running costCheck the size for my room
Details
Specifications
| General | |
|---|---|
| Brand | Midea |
| Also sold as | Frigidaire, Brothers, Seasons, PerfectAire, DuraSTAR |
| Model number | MT08VB1 |
| Type | Through-the-wall |
| Heating | No, cooling only |
| Compressor | Variable speed (inverter) |
| Voltage | 115 V (standard outlet) |
| Refrigerant | R-32 (GWP 675) |
| Support bracket included | No |
| On the market since | February 10, 2026 |
| Last certified | September 29, 2026 |
| Performance | |
| Cooling capacity | 8,000 BTU/h |
| CEERCombined energy efficiency ratio, includes standby power | 14.1 |
| Yearly energy useENERGY STAR test: 750 hours | 426 kWh |
| Better than federal minimum | 47% less energy |
| ENERGY STAR Most Efficient | Yes |
| Size | |
| Width × height × depth | 24.1" W × 14.7" H × 20.9" D |
| Weight | 54 lb |
How it compares with 14 other through-the-wall units
- CEER (class median 13.9)14.1, tied with 2 others
- Yearly cost vs. class median ($117)$40 less
- Width 24.1" (class median 26.5")narrower than 64%
- Weight 54 lb (class median 110 lb)lighter than 100%
- Rank among 13 similar designs#2
Compared with the other ENERGY STAR certified through-the-wall units. Yearly cost at 750 hours and 18.0¢/kWh.
Same unit, other model numbers
These model numbers have the same capacity, efficiency, energy use, dimensions and weight as the Midea MT08VB1: the same unit under another brand, or with a colour or retailer code. Everything on this page applies to them.
- Midea MAT08R1FWTK
- Midea MAT08R1SWTK
- Midea MWEUTW-08CRFN8-BCN1
- Frigidaire FHTC085WC1
- Brothers 102378
- Seasons ST08VB1
- PerfectAire 1PATWV8000
- DuraSTAR DRTAC081XVB1
Questions
- How many square feet does the Midea MT08VB1 cool?
- At 8,000 BTU/h it suits a room of about 250 to 350 sq ft with normal sun and two people, following the ENERGY STAR sizing guide. In a heavily shaded room that stretches to about 275-385 sq ft; in a very sunny one it shrinks to 225-315 sq ft. A kitchen needs 4,000 BTU more.
- How many watts and amps does the Midea MT08VB1 use?
- About 567 watts at full power (8,000 BTU/h divided by its CEER of 14.1), which is 4.9 amps at 115 V. That is 296 W less than the typical unit in its class (863 W), or $40 a year cheaper to run at 18.0¢/kWh. Its inverter compressor slows down instead of cycling, so real use is usually lower. Its CEER beats 73% of the 15 units in the class.
- Can the Midea MT08VB1 run on a standard outlet?
- Yes. It runs on 115 V and draws about 4.9 A, well inside a standard 15 A outlet, but do not share the circuit with a space heater, microwave or other big load. 60% of certified units in this class need 230 V, so a 115 V model is the easy case.
- What are the dimensions of the Midea MT08VB1, and will it fit my window?
- 24.1" W × 14.7" H × 20.9" D, 54 lb. It is narrower than 64% of its 14 competitors and lighter than 100% of them. It slides into a wall sleeve, so compare the sleeve opening with the unit before buying.
- Can the Midea MT08VB1 also heat the room?
- No, it only cools. If you also need heat, 2 certified units in this class can do both; see the list of air conditioners with heat.
- Is the Midea MT08VB1 worth buying to replace an old air conditioner?
- An old unit of the same size at 9 CEER would cost about $120 a year to run at 750 hours and 18.0¢/kWh; this one costs about $77, so it saves roughly $44 a year.
- Is the Midea MT08VB1 the same as the Midea MAT08R1FWTK?
- As far as the certified data goes, yes. ENERGY STAR lists 9 model numbers with the same capacity, efficiency, energy use, dimensions and weight, which means the same unit sold under another brand or with a different colour or retailer code. The full list is on this page.
Running cost calculator
Pre-filled with this model. Pick your state and how many hours you run it, or see the yearly cost in every state.
Closest alternatives
Units with a similar CEER in the same class, and what sets each one apart from the Midea MT08VB1.
| Model | CEER | Compared with this one |
|---|---|---|
| Friedrich WCVT10B10B | 14.2 | 0.1 CEER higher, 2.4" wider, 56 lb heavier |
| Midea MT10VB1 | 14.1 | same CEER |
| Midea MT12VB1 | 13.9 | 0.2 CEER lower, 5 lb heavier |
| Friedrich WCVT12B30A | 13.9 | 0.2 CEER lower, 2.4" wider, 56 lb heavier, 230 V |
| Wallmaster WCVT12B30B | 13.9 | 0.2 CEER lower, 2.4" wider, 56 lb heavier, 230 V |
See all 15 through-the-wall air conditioners, ranked
Source: ENERGY STAR Certified Room Air Conditioners (U.S. EPA), certification of September 29, 2026. How we use the data.