Two Brothers Couldn't Afford Air Conditioning. So They Built a $119 Device That Cools Any Room Without Installation. Now Big HVAC Is Furious.

What started in a sweltering Austin apartment is now in over 100,000 American homes. No contractors. No ductwork. No outdoor unit. Just a plug and cold air.

Oliver Bennett | Advertorial | Updated 2 hours ago

THE PROBLEM

97°F Outside. 93°F Inside. No AC Allowed.

In the summer of 2021, brothers Marcus and James Chen were sharing a two-bedroom apartment on the east side of Austin, Texas.

 

No central air. No window units allowed — their lease prohibited anything mounted to windows or walls. The building was old, the insulation was nonexistent, and by July, indoor temperatures were hitting 93°F by mid-afternoon.

"We'd come home from work and the apartment felt like a greenhouse. We had three fans running 24/7. All they did was push hot air from one side of the room to the other." — Marcus

Sleeping was the worst part. Austin nights in July rarely drop below 80°F. The brothers would soak towels in cold water and drape them over the fans. It worked for about twenty minutes before the towels were warm again.

"I'd wake up at 2 AM drenched in sweat, look at the thermometer — still 88 degrees — and just lie there. Three months of that. Every summer. For three years." — James

They looked into portable AC units — the kind with the hose that goes out the window. Loud, bulky, and their lease technically prohibited window modifications. They looked into mini-splits. The cheapest quote: $3,800 for one room. Plus their landlord would have to approve a wall penetration. He said no.

"That's when we got angry enough to do something about it." — Marcus
Title

THE BUILD

"What If We Just... Built One?"

Marcus had studied mechanical engineering at UT Austin. James had spent five years in product design at a consumer electronics company. Between them, they had the skills. What they didn't have was money.

"Our budget was literally whatever we could put on a credit card. So we had constraints: it had to be small, it had to be cheap to manufacture, it couldn't require installation, and it had to actually cool a room — not just blow air around." — Marcus

They spent four months in their parents' garage in Round Rock. Fourteen prototypes. Three fundamental redesigns. Endless arguments about airflow physics.

"Prototype 7 actually worked. It cooled the garage by about 8 degrees. But it sounded like a lawnmower. Prototype 11 was quiet but didn't cool enough. Prototype 14 was the one." — James

The breakthrough was what they now call TurboCool — a compact heat exchange system that pulls warm air through internal cooling elements and pushes cold air out, while internally recycling condensation so there's no hose, no drip tray, no external components.

"Everyone said you need an outdoor unit to dump heat. We found a way to do it internally at room scale. It's not magic — it's thermodynamics applied differently than the industry does it. They build for whole buildings. We built for one room." — Marcus

THE MOMENT

"I Woke Up Cold. In August. In Austin."

They took prototype 14 back to their apartment. Plugged it into the bedroom outlet. Set it to 72°F.

Fifteen minutes later, the room was cool.

 

Not "slightly better than before" cool. Actually, properly, comfortably cool.

"I woke up at 6 AM — and I was cold. Cold. In August. In Austin, Texas. I pulled the blanket up. That hadn't happened in three years." — Marcus

 

"I slept eight straight hours for the first time since May. No sweat. No tossing. No 2 AM thermometer checks. Just sleep." — James

They looked at each other over coffee that morning and said the same thing:

Title

"Other people need this."

Title

THE GROWTH

No Ads. No Investors. Just Word of Mouth.

Within a week, every single buyer had told someone else. Orders started coming in from people they'd never met.

 

"We didn't run a single ad for the first six months. People would text photos of their temperature displays to friends. 71°F in a room that used to be 90°F. That's all the marketing we needed." — James

 

They named it InstaCool Pro, set up manufacturing, and launched online. Within 12 months: over 100,000 units sold across 23 states.

 

No HVAC contractors involved. No installations. No $10,000 invoices. Just Americans plugging in a device and sleeping through summer for the first time.

 

"The HVAC industry spends billions convincing people they need a $12,000 system. For most rooms, for most people, they don't. They need a $119 device and a standard outlet." — Marcus

THE REACTION

"An HVAC Industry Rep Called Us 'Irresponsible.' We Took It As a Compliment."

Not everyone was thrilled about InstaCool Pro's success.

 

"We got an email from someone at an HVAC industry association. They said we were 'misleading consumers' and 'undermining professional standards.' We wrote back: 'Our customers sleep at 72°F. What temperature do yours sleep at after waiting six weeks for an installation appointment?'" — Marcus

 

The brothers are used to the pushback.

 

"The industry makes money on complexity. Ductwork, outdoor units, refrigerant certifications, annual maintenance contracts. We removed all of that. Of course they're not happy." — James

"But we didn't build this for the industry. We built it because we were two guys in a hot apartment who couldn't sleep." — Marcus

THE PRODUCT

Everything You Need. Nothing You Don't.

What's in the box:

  • InstaCool Pro unit (compact, wall-mountable or freestanding)
  • Remote control
  • Wall mounting kit (optional — no permanent installation required)
  • User guide

No outdoor unit. No hose. No window kit. No drip tray. No contractor visit.

How it works:

  1. Take it out of the box
  2. Plug it into any standard outlet
  3. Choose your temperature
  4. That's it. The room is cool in 15 minutes.

Specs:

  • Cooling + Heating — 2-in-1, year-round use
  • Covers rooms up to 550 sq ft
  • 6 operating modes
  • Whisper-quiet operation
  • Touchscreen + remote control
  • Energy-efficient — runs on roughly the same power as a bright light bulb

Check Availability 👉🏻

REAL BUYERS

What 100,000 Americans Are Saying

⭐⭐⭐⭐⭐

"My boyfriend was skeptical. I plugged it in while he was at work. He came home and said 'did you get a window unit?' Nope. Just InstaCool Pro. He ordered one for his mom that night."
— Danielle R., Phoenix, AZ

⭐⭐⭐⭐⭐

"Third-floor apartment, west-facing windows, no AC allowed in the lease. This thing saved my summer. Literally."
— Kyle B., Nashville, TN

⭐⭐⭐⭐⭐

"I'm 74 years old. I can't afford a new AC system. My grandson bought me an InstaCool Pro. I've never slept better in July. I don't understand the technology but I understand 72 degrees."
— Gloria S., Houston, TX

FINAL WORDS

"We Built This for People Like Us."

"Look — we're not trying to destroy the HVAC industry. If you're building a new house, get central air. If you're a commercial building, hire a contractor.  But if you're a renter, a single parent, a college student, a retiree on a fixed income, someone whose landlord won't approve an installation — you deserve to be cool too.  That's why we built InstaCool Pro. Not for mansions. For apartments. For bedrooms. For people who just want to sleep through summer without choosing between comfort and rent.  $119. One plug. No permission needed."

 

— Marcus Chen, Co-Founder, InstaCool Pro

Check Availability 👉🏻
Title

The AC the Chen brothers built for themselves. Now in 100,000 American homes.

$299  $119 — Summer Launch Price

✓  Free US Shipping (2–5 days)

✓  30-Day Money-Back Guarantee

✓  Cools AND heats — one device, all year

✓  Zero installation. Zero contractors. Zero permits.

Check availability

recommended:

Cools your room in minutes

Energy-efficient climate control

Whisper-quiet operation

Plug & play – no tools needed

Check Availability 👉🏻

Easy to set up, incredibly effective, and surprisingly quiet at night. A fantastic cooling solution that has made everyday life much more comfortable.

 

— Jonas O., 32

Copyright @2026

 

THIS CONTENT IS ADVERTISING AND NOT A CURRENT NEWS ARTICLE, BLOG, OR UPDATED CONSUMER PROTECTION MARKETING NOTICE: This website is a marketplace. We hereby inform you that the owner has a financial relationship with the products and services advertised on the site. The owner receives payment when a qualified purchase offer is generated, and that is the extent of it.

 

ADVERTISING DISCLOSURE: This website and the products and services referenced on it are advertising marketplaces. This site is an advertising page and not a news publication. All photos of people used on this website are models. The owner of this website and of the products and services referenced here merely provide a service through which consumers can obtain and compare information.


 

Imprint & Contact

Privacy Policy

Terms of Use