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Airspool HS24 "SuperHeat" Solar/Hybrid Air Conditioner and Heater (24,000 BTU)

The ultimate Airspool. The HS24 "SuperHeat" is our most capable single-head unit — 24,000 BTU of cooling and heating for larger spaces, with EVI Superheat technology that keeps pumping reliable warmth all the way down to -22°F. It's the full package: Quick ’n’ EasyTM 5-minute connection, solar/hybrid flexibility, kink-proof line set, and the strongest guarantee in the industry.

  • True DIY install — no HVAC tech needed
  • Runs on solar, grid, or both (solar always prioritized)
  • 365 Day "Buy and Try" Guarantee + 5-Year Full Guarantee
  • Fast, highly-discounted shipping
  • EVI Superheat: reliable heat down to -22°F
  • Flexible kink-proof line set included
$3,295$3,145 Add HS24 To Cart

★★★★★

“Great unit and customer service
great product, great personalized customer service , fast delivery. I highly recommend this company and product!”
Joseph Esposito Verified Buyer

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★★★★★

“Amazing product!
Honestly one of the best products on the market”
Darrell Galletta Verified Buyer

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Meet the Airspool HS24 "SuperHeat"

The HS24 is the everything unit. Maximum power. Maximum climate range. Maximum ease.

At 24,000 BTU, it handles large open-concept spaces, workshops, garages, and guest houses with ease. And with EVI Superheat technology, it keeps heating reliably all the way down to -22°F — long after standard heat pumps have given up.

It's the same Quick ’n’ EasyTM system our customers love: solar-first hybrid power, a 5-minute connection, and the industry's best guarantee. Now with double the capacity and extreme cold-weather capability.

If you have a bigger space and serious winters, this is the one.

Configuration 1 Zone
Heats and cools around 1,000 Sq Ft 24,000 BTU
Cooling up to 131°F Outdoor temperature
Heating down to -22°F Outdoor temperature
HS24 installed on interior wall in a spacious room

Operating Modes

Grid Power Only

Connect your unit to a 220/240V outlet and enjoy high-efficiency heating and cooling for larger spaces.

Solar Power Only mode

Solar Power Only

Going off grid? We recommend around 3,000 watts of solar panels to enjoy year-round comfort in larger spaces.

Hybrid Grid/Solar

Your HS24 seamlessly blends grid and solar power so you never lose comfort. Solar is prioritized, and grid power automatically fills in as needed.

What is EVI SuperHeat?

Most heat pumps lose efficiency — and eventually stop working — when outside temperatures drop below freezing. That's because standard compressors struggle to extract heat from extremely cold air.

EVI (Enhanced Vapor Injection) solves this. It adds a secondary injection cycle to the compressor that supercharges its ability to extract warmth from frigid air — even at -22°F.

The result? Consistent, powerful heating performance in conditions that would shut down a standard unit.

No backup heater needed. No space heaters. No worrying about whether your system can handle a cold snap.

Just reliable warmth, powered by the sun and backed by the best guarantee in the industry.

Bottom line: The HS24 combines the HS12's extreme cold-weather SuperHeat capability with the MS24's 24,000 BTU power — heating and cooling a space twice the size, in conditions twice as extreme.
Winter scene showing extreme cold weather

The Kink-Proof Advantage

If you've ever worked with 1/2" copper line sets, you know the frustration: one wrong bend and it kinks. A kinked line set means restricted refrigerant flow, reduced efficiency, and potentially a trip to the hardware store.

The HS24 eliminates that headache entirely.

Instead of rigid copper, your HS24 comes with a flexible, kink-proof line set. Bend it, route it around corners, thread it through tight spaces — it won't kink. Period.

It's one of those upgrades that seems small until you're in the middle of an install and realize how much easier everything just became.

16 feet of flexible, kink-proof line set included. Need more? We can customize your line set length up to 49 ft.
Flexible kink-proof line set close-up
Hands twisting together Airspool Quick 'n' Easy refrigerant line valves

The Quick ’n’ EasyTM System

The Secret That Will Save You Hours and $$$

Installing a mini-split system typically requires a vacuum pump, gauge set, specialized wrenches, adapters, correct-sized screwdrivers, wire cutters/strippers, and potentially extra refrigerant. Plus, know-how, patience and time.

But not with Airspool.

We do all of that work and pre-install our patent-pending Quick ’n’ EasyTM valves at our US headquarters. So when your unit shows up at your doorstep, you just twist the connections!

We'll Customize Your Line Set Length!

With most mini-splits, you get what you get as far as line set length.

But not with Airspool.

Because we customize everything in-house, you have the option to customize the length of your lineset. All the way to 49 ft!

And, since we test all aspects (e.g. solar, grid, and a combination of both) before shipping, we know it's going to work for you. Because of this, you get an unprecedented 5-year functionality guarantee.

2 Ways to Control Your Airspool

Imagine coming home to the perfect temperature in your room, no matter what season. With our Apple/Android app, you can control your air conditioning and heat directly from your phone from anywhere in the world. Or program the times you want and forget about it.

But if you're like us and like to have some physical buttons to press, you'll appreciate the remote included with your unit.

Download the Airspool App

Airspool remote and smartphone app

Do It Yourself (Really!)

The Airspool Quick ’n’ EasyTM system is about to make your life much easier.

Imagine installing a full HVAC system by yourself, with no previous experience, and doing it in a few hours!

This is your reality with Airspool.

Step 1. Place the outdoor unit

Set the outdoor unit on a stable surface with room for airflow. Double-check the final location before moving forward. Note: the HS24 outdoor unit is larger than the 12k models, so make sure you have adequate clearance.

Step 2. Drill hole

Mark your wall path and drill the pass-through opening for the line set. Keep the angle slightly downward to support drainage.

Step 3. Mount your indoor unit

Secure the wall bracket and hang the indoor unit in place. Make sure it is level and fully seated on the bracket.

Step 4. Twist to connect your line set

Route the flexible, kink-proof lines and connect them by hand as instructed. Tighten to spec and confirm each connection is fully seated.

Step 5. Mount your isolator and plug in your solar (optional)

Install the isolator in an accessible location near your outdoor setup. Connect solar input if desired, or continue with grid power only.

Step 6. Turn it on and enjoy!

Power the system, run startup checks, and set your comfort mode. You are now ready for efficient heating and cooling — even at -22°F.

For HS24 installations, use the HS12 installation manual below, then review the HS24 insert for the model-specific changes.

How can we be so confident you can install this yourself, even with zero experience?

Because we give you:

  • an industry-best installation manual full of full color photos and written in native English!
  • dozens of installation videos which make it even easier
  • and unlimited phone support if you get stuck!

Customers often ask...

How long will it take to install my HS24?
Most first-time installers complete the full job in 2-4 hours. The Quick ’n’ EasyTM connections themselves take about 5 minutes. The rest of the time is spent mounting the wall bracket, drilling a pass-through hole, and routing the line set. The flexible kink-proof line set on the HS24 actually makes routing easier than rigid copper. If you've done it before, you can have a unit up and running in under an hour.
What tools do I need at home to install an HS24?
Just a drill — that's it. We include the hole saw, drill bits, screwdriver bit, level, and all the hardware you need. No vacuum pump, no gauges, no torque wrench. Just your drill and about 2-4 hours.
Colorado Airspool installation Colorado customers completing an install

Airspool HS24 "SuperHeat" Specs at a Glance

Feature Details
Capacity 24,000 BTU (heating & cooling) — ideal for ~1,000 sq ft
Efficiency 21 SEER2 (cooling) · 11.2 HSPF2 (heating)
Power 220/240V, 20-amp (plug or whip and disconnect — specify at order)
Operating Range Heats down to -22°F · Cools up to 131°F
Modes Solar-only · Grid-only · Hybrid (auto-switch)
Recommended Solar Power around 3,000 watts (90-380V input range)
Line Set Flexible kink-proof, 5 meters (16 ft), pre-charged, twist-to-connect
Communication Wire 7 meters (23 ft), 4-lead
Dimensions (Approx.) Indoor unit: 42in × 13in × 8in
Outdoor unit: 33in × 26in × 13in
Weight (Approx.) Indoor unit: ~35 lbs
Outdoor unit: ~130 lbs
Certifications ENERGY STAR Most Efficient 2026, ETL, AHRI, UL

What’s Included with Your HS24

Everything you need (except a drill and solar panels):

  • Indoor & outdoor units (24,000 BTU)
  • Pre-charged, flexible kink-proof twist-to-connect refrigerant line set (16 ft)
  • 220/240V 20-amp power cord (12 AWG) — with plug or whip and disconnect, your choice
  • 23 ft (7-meter) 4-lead communication control wire
  • Wall bracket, putty, and mounting hardware
  • Remote control (with batteries)
  • 10 ft condensate hose + wrap tape + valve dust caps
  • MC4 disconnect tools & extra connectors
  • Clear English installation manual with tons of pictures

Free Quick ’n’ EasyTM Bonus Kit (included free)

Solar whips, DC isolator box, 10m solar wire, gloves, zip ties, tape, hole saw & bits, screwdriver bit, and level.

MS12 indoor unit

Indoor Unit

Backed by Dave’s Double Guarantee

Like every purchase you make with Airspool, your HS24 is backed by two industry-leading guarantees.

365 Day "Buy and Try" Guarantee

Take a full year to make sure your Airspool system is right for you. For any reason — or no reason at all — you can return it within 365 days for a full refund, and we’ll even cover the shipping back to us.

We want to take all the risk off your shoulders so you know you're making a good decision with Airspool.

5 Year Guarantee

Your comfort shouldn’t come with fine print. For five full years after purchase, we’ll make sure your unit keeps running like new. That means we cover all parts and labor.

David VanZanten

David VanZanten Founder and President of Airspool

Your New HS24 Shipped

Here's what to expect when we ship your HS24.

The packages you'll receive

Your new HS24 ships palletized via a freight carrier. It will arrive on a truck with a lift gate to your residence or business.

Pallet: Freight shipment

Delivered palletized via freight carrier with lift-gate service

HS24 palletized freight shipment HS24 palletized shipment detail

How much does shipping cost?

Worldwide: Highly discounted shipping (when you enter your address at checkout, your shipping total will be displayed before you purchase).

Which package provider will ship my unit?

These larger systems ship via freight carrier on a pallet. Delivery arrives on a truck with a lift gate to your residence or business. For international shipments, DHL, FedEx, UPS, or other carriers may handle final delivery logistics.

What if my package gets damaged?

That's not your problem! Remember you have a 365-day Buy and Try Guarantee so you can return your unit for any reason or no reason. We'll even cover the shipping costs back to us.

Frequently Asked Questions about HS24

How loud is the HS24?

The indoor unit operates at a whisper-quiet level comparable to a library. The outdoor unit is slightly louder than the 12K models because of the larger compressor, but still comparable to a normal conversation.

How much space does the HS24 cover?

About 1,000 sq ft, which is ideal for an open-concept living area, large workshop, garage, guest house, or ADU. If you only need around 500 sq ft in a cold climate, the HS12 is usually the better value.

What is EVI SuperHeat and can it really heat at -22°F?

Yes. EVI (Enhanced Vapor Injection) adds a secondary injection cycle to the compressor that lets it extract warmth from extremely cold air when standard heat pumps have given up. The HS24 keeps heating reliably all the way down to -22°F with no backup heater needed.

How does the HS24 compare to all the other Airspool models?

MS12 is a 12K mild-climate unit on 120V. HS12 is the 12K cold-climate version that heats to -22°F on 120V 20-amp power. MS24 is the 24K mild-climate option on 220/240V. HS24 is the 24K cold-climate option that heats to -22°F on 220/240V. MU24 and MU36 are multi-head systems for 2-3 rooms from one outdoor unit, and WS12 is the window unit. All Quick ’n’ EasyTM models share the same 5-minute connection, solar/hybrid capability, and 5-year guarantee.

What kind of electrical outlet does the HS24 need?

220/240V, 20-amp power, which is the same type of power used for clothes dryers and ovens. Most homes already have it available. You can specify a plug or direct wire when you order. It works on both 50 Hz and 60 Hz for international use.

Do I need solar panels right now or can I get them later?

No. The HS24 works perfectly on grid power alone. Add solar whenever you are ready. Many customers start on grid and add solar later.

How many solar panels do I need for the HS24?

About 3,300 watts, which is usually 6-8 standard panels. Budget around $1,300 for panels plus mounting hardware. The solar input range is 90-380V. A little under or over is fine because grid power fills in automatically.

What kind of line set does the HS24 use?

The HS24 uses a flexible, kink-proof line set instead of rigid copper. It bends, routes around corners, and threads through tight spaces without kinking. It is 16 ft, pre-charged, and twist-to-connect. Need more? We can customize it up to 49 ft.

Why does the HS24 have better heating efficiency than the MS24?

The EVI compressor is inherently more efficient at extracting heat. The HS24 delivers 11.2 HSPF2 heating efficiency, which is meaningfully higher than the MS24’s 9.6 HSPF2. You get more heat per watt, even when it is not brutally cold outside.

How long does the HS24 take to install?

Most first-timers finish in 2-4 hours. The Quick ’n’ EasyTM connections take about 5 minutes. The flexible kink-proof line set makes routing easier than rigid copper.

What tools do I need?

Just a drill. We include a hole saw, drill bits, screwdriver bit, level, gloves, and all hardware. No vacuum pump, no gauges, and no torque wrench.

What happens if I have too much or too little solar power?

No problem either way. Too little solar means grid power fills in. Too much solar means the excess goes unused without any issues. The system adjusts seamlessly.

Can I move the HS24 after installation?

Yes. The Quick ’n’ EasyTM self-sealing valves unscrew and reconnect without losing refrigerant. It takes about 5 minutes to disconnect and another 5 minutes to reconnect.

What maintenance does the HS24 need?

Clean the indoor air filter quarterly. Vacuum the indoor coil and spray the outdoor coil with a garden hose annually. That is it.

What's included with my HS24?

Indoor and outdoor units (24K BTU), pre-charged 16-ft kink-proof twist-to-connect line set, 220/240V power cord, 23-ft communication wire, wall bracket, remote control, condensate hose, and the free Quick ’n’ EasyTM Bonus Kit. Everything except a drill and solar panels.

How much does shipping cost for the HS24?

Shipping is highly discounted worldwide and shown at checkout before you purchase. You will receive 3 boxes: outdoor unit (around 130 lbs), indoor unit (around 35 lbs), and solar isolator (around 2 lbs).

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