How energy-efficient is the MRCOOL Advantage 24,000 BTU 5th Gen Mini Split?

Its efficiency rating is SEER2 18.7.

What size room does the MRCOOL Advantage 24,000 BTU 5th Gen Mini Split cool?

It is rated to cool a room up to 1,050 sq ft (24,000 BTU · 7 kW).

Do I need a professional to install the MRCOOL Advantage 24,000 BTU 5th Gen Mini Split?

Yes. As a single split it needs a certified installer. Usually needs permission.

Does the MRCOOL Advantage 24,000 BTU 5th Gen Mini Split heat as well as cool?

Yes. It also heats, rated 24,000 BTU of heating output.

How cold can it get outside before the MRCOOL Advantage 24,000 BTU 5th Gen Mini Split stops heating?

Its retailer's specification for this exact configuration rates it to keep heating down to -22°F outdoors. That is its operating limit, not its full output: a heat pump delivers less heat as it gets colder, so size it for your coldest days.

Single splitSEER2 18.7 Heats too

MRCOOL · Model A-24-HP-230D-O

Advantage 24,000 BTU 5th Gen Mini Split

Name: MRCOOL Advantage 24,000 BTU 5th Gen Mini Split
Brand: MRCOOL
Price: 1649 USD
Availability: InStock

A wall-mounted split air conditioner rated at 24,000 BTU for rooms up to 1,050 sq ft. It heats in winter too.

$1,649

Live price at Sylvane

Price checked Oct 2, 2026

Buy at Sylvane In stock

compare.ac may earn a commission on purchases, at no cost to you. It never changes the price you pay or how we rank units.

Will it cool your room?

Room size 500 sq ft ≈ 46.5 m²

Fits your 46.5 m²

This unit's cooling matches your 500 sq ft room.

Running cost

Mini-splits are rated on SEER2, a seasonal scale, not the ENERGY STAR annual-kWh figure this dollar estimate is built from, so there is no comparable figure to show here. A blank is missing data, not a worse result: a mini-split is often the more efficient choice.

Installation cost

$2,500-6,000 fully installed for a typical room (the equipment is roughly $700-1,800, professional installation roughly $1,500-4,000+ depending on line-set run, electrical and access). The unit price you see here is hardware only; installation is the larger, separate cost.

A typical range for this system type, for comparison only, not a quote for this unit. The actual price depends on the line-set run, electrical work and access.

At a glance

Best for larger open-plan rooms.

Cooling

7 kW

Size

Noise

Install: Certified installerPermission: Usually needs permission

Performance

Cooling capacity: 24,000 BTU · 7 kW
Heating capacity: 24,000 BTU
Heats down to: -22°F outdoors
Room coverage: up to 1,050 sq ft
Energy Star: Not published
SEER2: 18.7
EER2: 10
Annual energy (cooling): Not published

Noise, size & features

Model number: A-24-HP-230D-O
Indoor noise: Not published
Outdoor noise: Not published
Indoor unit: Not published
Outdoor unit: 35.04 x 26.5 x 13.46 in (W x H x D)
Refrigerant: R-454B
Wi-Fi / app: Not published
Outdoor unit needed: Yes
Warranty: Eligible for the MRCOOL Care Program, 2-Year Compressor Warranty; 1-Year Parts Warranty

EER2, SEER2, warranty, heating capacity, refrigerant, heating limit and outdoor unit size are from Sylvane's published specifications for this exact configuration, checked Sep 26, 2026.

What is good

It is rated to keep heating down to -22°F outdoors, colder than 40 of the 49 other mini-splits we list that publish a heating limit.
At $1,649 it undercuts 28 of the 30 other 20,000 BTU and up mini-splits we list with a live price.
Uses R-454B (GWP 466), the low-GWP class new US residential equipment moved to.

Installation & the rules that apply

This is a single split. This is where regulation bites. Under EPA Section 608 the refrigerant circuit may only be opened by a certified technician, and the EPA is explicit that this includes connecting or disconnecting the pre-charged line sets sold with "DIY" mini-split kits. No federal law stops you doing the mounting, bracketing and line routing yourself, but handling the refrigerant without certification voids the warranty and is a violation. Most US jurisdictions also require permits for a new outdoor unit: typically mechanical or building for the wall penetration and mount, plus electrical for the dedicated 240 V circuit and disconnect. An HOA nearly always has to approve exterior equipment in advance, and local noise ordinances can cap how loud the condenser may be at the property line. This varies by city and county, so confirm with your building department before buying hardware.

Installation

Certified installer

Refrigerant

R-454B

GeneralRenters: get written landlord consent firstReviewed June 2026Often blocks install

United StatesUS: EPA Section 608 certified technician for refrigerantReviewed June 2026Often blocks install

ArizonaArizona: municipal mechanical permit for AC replacementReviewed June 2026Permit required

CaliforniaCalifornia: Title 24 permit and HERS verificationReviewed June 2026Permit required

FloridaFlorida: hurricane wind-load anchoring of outdoor unitsReviewed June 2026Permit required

See full rules by region

Common questions about the MRCOOL Advantage 24,000 BTU 5th Gen Mini Split

How energy-efficient is the MRCOOL Advantage 24,000 BTU 5th Gen Mini Split?: Its efficiency rating is SEER2 18.7.
What size room does the MRCOOL Advantage 24,000 BTU 5th Gen Mini Split cool?: It is rated to cool a room up to 1,050 sq ft (24,000 BTU · 7 kW).
Do I need a professional to install the MRCOOL Advantage 24,000 BTU 5th Gen Mini Split?: Yes. As a single split it needs a certified installer. Usually needs permission.
Does the MRCOOL Advantage 24,000 BTU 5th Gen Mini Split heat as well as cool?: Yes. It also heats, rated 24,000 BTU of heating output.
How cold can it get outside before the MRCOOL Advantage 24,000 BTU 5th Gen Mini Split stops heating?: Its retailer's specification for this exact configuration rates it to keep heating down to -22°F outdoors. That is its operating limit, not its full output: a heat pump delivers less heat as it gets colder, so size it for your coldest days.

How MRCOOL compares with other brands

Both lineups at every size both brands sell in stock, with live prices, ratings and the warranty each listing states.

MRCOOL vs Senville mini splits MRCOOL vs Pioneer mini splits

Is a split even the right type?

Compare splits against the other types on price, noise, efficiency and install.

Mini-split vs window Mini-split vs portable

Buying guides for a single split like this

The questions buyers ask, answered from live prices and real specs. See where a single split like this fits.

Best mini-split AC Best 24,000 BTU AC AC for a 700 sq ft room Best AC that also heats Mini-splits for cold climates

$1,099

at Sylvane

+ pro install, usually $1,500-4,000

Compare

$979