Prices, ratings and stock were checked on Amazon on October 21, 2026. Specs from the older page are marked as such and were not retested.
The Senville 24,000 BTU mini-split is still around under a new name. Here is what the old page said, how to size it and two rivals to compare.
Table of Contents
The Senville Got a New Name
The old page reviewed the Senville SENL-24CD 24,000 BTU ductless mini-split. The same Amazon listing is now called the Senville LETO 24,000 BTU, still a 2-ton heat pump. A check on October 21, 2026 found it in stock at $1,249.99 with 2,007 ratings.
Is 24,000 BTU Too Much?
Twenty-four thousand BTU is two tons. In a well-insulated home, that is roughly 900 to 1,200 square feet. A single bedroom is a 9,000 to 12,000 BTU job. Buy by room size, not by bragging rights. The BTU calculator and a guide on how to choose the right size air conditioner will keep you honest.
Pre-Charged or Not?
The old page said the refrigerant was not pre-charged. Many current units are pre-charged, which saves a step. Not every listing says so. A unit that is not pre-charged needs a licensed tech to add refrigerant. Ask before you click, and keep the answer in writing.
Here is where 24,000 BTU mini-splits are going: heat pumps by default, apps by default and prices that vary by hundreds of dollars for the same ton count. Senville has already renamed the SENL-24CD to the LETO. Same ASIN, new badge.
3 24,000 BTU Mini-Splits to Compare
Rechecked on Amazon on October 21, 2026. Prices, ratings and buttons are below.
Price on Amazon: $1,249.99 | 4.5 stars from 2,007 ratings (checked October 21, 2026)
The Senville LETO 24,000 BTU is the renamed unit from the old page. The listing says it is a 4-in-1 heat pump that works with Alexa, runs down to 5 degrees Fahrenheit, takes 208/230V and includes an installation package. It costs $1,249.99, with a 4.5 rating from over 2,000 ratings.
Price on Amazon: $1,029.99 | 4.4 stars from 1,682 ratings (checked October 21, 2026)
The COSTWAY 24,000 BTU lists 18.5 SEER2, 208-230V power, a heat pump, five modes and self-cleaning. It costs $1,029.99, with a 4.4 rating from over 1,600 ratings. The listing claims coverage up to 1,500 square feet, which is a best case.
Price on Amazon: $1,498.97 | 4.3 stars from 320 ratings (checked October 21, 2026)
The Cooper & Hunter 24,000 BTU is a 2-ton, 230V, 18.7 SEER2 heat pump, pre-charged, with smart control and a 16-foot installation kit. It costs $1,498.97, with a 4.3 rating from 320 ratings.
The downside is that big units hide big mistakes. A 24,000 BTU unit in a room that needs 12,000 cools fast, shuts off early and never dries the air. It also needs a 230V circuit and thicker lines. Expect more oversized installs, since bigger sounds safer. It is not. Short cycling wears the compressor and leaves the room clammy.
The 230V Circuit
All three picks run on 208/230 volts. That needs a dedicated circuit and a breaker sized for it. If the panel has no room, add the electrician to the price. It often adds a few hundred dollars.
SEER2 and Your Bill
A higher SEER2 means a smaller bill. The Costway lists 18.5 and the Cooper & Hunter 18.7. The gap is small. What matters more is sizing and install quality. Our SEER2 energy savings guide explains how to compare.
When the Light Blinks
A flashing light on a new mini-split is usually a clue, not a death sentence. Dirty filters, a blocked line or a wiring slip are the usual suspects. Our guide to a mini-split blinking green light lists the common fixes.
The Pick
Want the old favorite and the biggest review pile? The Senville. Want to save a couple hundred dollars? The Costway. Want a pre-charged kit with smart control? The Cooper & Hunter. See the best mini-split air conditioners for more.
FAQ
Is the Senville SENL-24CD still sold?
It is now listed as the Senville LETO 24,000 BTU at $1,249.99 on Amazon as of October 21, 2026.
Does a 24,000 BTU mini-split need 230 volts?
Yes. All three picks here run on 208/230V.
Is the Senville pre-charged?
The old page said no. Check the current listing before you buy.
How much room does 24,000 BTU cool?
Roughly 900 to 1,200 square feet in a well-insulated home.
Final Word
The Senville is still the proven pick under a new name. The Costway saves money and the Cooper & Hunter comes pre-charged. Size the room first.
What comes next: more inverter units with multi-zone options, tighter efficiency rules and refrigerants that change again. If your room is one zone and one ton is plenty, do not buy two.
Related Guides
Keep going with best mini-split air conditioners, SEER2 energy savings guide, mini-split blinking green light, BTU calculator and how to choose the right size air conditioner.
