Representative illustration of a room air conditioner
Representative · room air conditioner
Representative illustration — room air conditioner (not the exact unit)
Keplerx

Keplerx KBRC24RSVE2

window air conditioner · 24,000 BTU cooling · fits ~1,200 sq ft

A window AC rated 24,000 BTU — enough cooling for a room of roughly 1,200 square feet (the 20-BTU-per-square-foot rule).

ENERGY STAR Window R-32 Variable-speed
24,000
BTU cooling
Representative illustration of a room air conditioner

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Sold online — DIY install

A window AC is a self-install unit: you set it in the window (or wall sleeve), no contractor or refrigerant charge needed. We link a live Amazon search for this exact brand and model so you see current prices and sellers.

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At a glance

Who it's for

Cooling a single room of about 1,200 sq ft — a bedroom, office or apartment — that you install yourself, no contractor.

The standout number

CEER 13.3 — the room-AC efficiency number; higher means a lower summer electric bill.

The catch

Window units only fit windows in their size range — measure your window width and height against the dimensions below before you buy.

The Verified Label — every certified spec

Verified LabelCertified cooling, fit & running cost
UPC 810112573312
certified 2024-12-13
status: Active

Cooling & efficiency — source: ENERGY STAR / DOE

Cooling capacity the room it suits at ~20 BTU/sq ft24,000 BTU · ~1,200 sq ft
CEER combined energy efficiency ratio — sets your bill13.3
Energy vs federal minimum computed by us41% less energy

Fit & install — does it fit your window?

Dimensions (H × W × D)18 × 24 × 25 in
Weight103 lb
MountingWindow (double-hung)
Power230 V · dedicated circuit

Operating cost — computed by Verified HVAC Data

Estimated annual running cost

$255

per year at U.S. average electricity prices · ~1,353 kWh

Efficiency tier

CEER 13.3

ENERGY STAR certified

Running cost falls as CEER rises and as you run it fewer hours. Your climate and local electricity price change the total.

Refrigerant & identity

RefrigerantGWP ≈ 675 (IPCC)R-32
Variable-speed compressorYes — inverter
Heating modeCooling only
ENERGY STARCertified
ModelKBRC24RSVE2
UPC810112573312

How it ranks

Where this unit sits among the 420 window and through-the-wall air conditioners we track, on CEER — the efficiency number that decides its running cost. Percentiles are computed from our corpus (higher = better).

CEER efficiency

Better than 7%

of the 420 room ACs with a published CEER

Cooling capacity

24,000 BTU

Sized for a room of about 1,200 sq ft at 20 BTU per square foot.

Rebates & incentives

This unit is ENERGY STAR certified, which a few utility rebates ask for. The federal 25C credit expired December 31, 2025, and it never covered room ACs anyway; the live money is state and utility programs. Check what applies where you live on our rebates page.

Compare similar room ACs

Frequently asked questions

What size room does the Keplerx KBRC24RSVE2 cool?

It puts out 24,000 BTU of cooling. The common rule of thumb is 20 BTU per square foot, so it suits a room of about 1,200 square feet with 8-foot ceilings. Sunny rooms, kitchens or spaces with many people need a bit more; heavily shaded rooms a bit less.

How efficient is the Keplerx KBRC24RSVE2?

It is rated CEER 13.3. CEER (Combined Energy Efficiency Ratio) is the DOE test number for room air conditioners — the higher it is, the less electricity the unit uses for the same cooling. This model uses about 41% less energy than the federal minimum for its size.

What does the Keplerx KBRC24RSVE2 cost to run?

We estimate about $255 a year to run it — roughly 1,353 kWh, at U.S. average electricity prices and a typical cooling season. Your climate and local power price move the number; running it fewer hours costs less.

Will the Keplerx KBRC24RSVE2 fit my window?

Measure your window opening first. This unit's cabinet is about 24" wide and 18" tall, 25" deep, and weighs roughly 103 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.

Where can I buy the Keplerx KBRC24RSVE2?

Room air conditioners are self-install and sold online. Our "Find it on Amazon" button opens a live search for this exact brand and model so you can compare current prices and sellers. It sets in the window (or wall sleeve) yourself — no contractor and no refrigerant charge.

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.

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