Three summers of waking up at 3 AM soaked in sweat. Set the SilentCool up on a Thursday evening. By Friday night my bedroom was 68°F. What got me wasn't just the cold — it was the silence. I genuinely forgot it was running.
Jessica M. — Brooklyn, NY
My attic home office is 10°F hotter than the rest of the house all summer. Previous window ACs were too loud for client Zoom calls. The SilentCool runs at 42 dB — nobody on the call hears it. I haven't sweat through a meeting since the day it arrived.
Sandra W. — Austin, TX
July electric bill: $410 running central AC all day. August: $195 using the SilentCool on Energy Saver mode in the rooms we actually live in. Same house, same brutal Texas summer. Paid for itself in under three weeks.
George H. — Dallas, TX
SilentCool - Ultra-Quiet Window Air Conditioner and Dehumidifier
SilentCool - Ultra-Quiet Window Air Conditioner and Dehumidifier
IN STOCK — SHIPS WITHIN 1 BUSINESS DAY
10,000 or 12,000 BTU. 42 dB — whisper quiet. Cools up to 400 sq ft. The window AC that actually lets you sleep.
Regular price
$618.95
Regular price
$1,049.95
Sale price
$618.95
Unit price
per
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Want it before the next heat wave? Get it by Wednesday, 10. Jun.
- 42 dB. The Quietest Window AC You've Ever Heard.
- Installs in 15 Minutes. No Contractor.
Product Details
Product Details
- Cooling Capacity: 10,000 BTU (6,300 SACC) or 12,000 BTU (8,100 SACC)
- Coverage Area: Up to 250 sq ft (10K) or 400 sq ft (12K)
- Dehumidifying: 35 pints/day (10K) or 45 pints/day (12K)
- Dimensions: 19 x 29 x 15 in (W x D x H)
- Weight: 62 lbs (10K) or 68 lbs (12K)
- Materials: ABS, galvanized plate, copper
- Power Supply: 115V, 60Hz (standard US outlet)
- Noise Level: 42 dB or less
- Temperature Range: 62–86°F programmable
- Window Width: 24–48 inches
- Max Sill Depth: 11 inches
- Modes: Cool, Dry, Fan, Auto, Sleep, Energy Saver
- Fan Speeds: High, Low, Quiet
- Oscillation: 40° vertical, 100° horizontal
- Timer: 1–24 hours programmable
- Remote Range: 16.5 feet
- Cord Length: 6 feet
In the Box: SilentCool Window Air Conditioner, Remote Control, Top Foam Sealer, Mounting Block, 4x Foam Sealers, User Manual
Shipping & Delivery
Shipping & Delivery
Ships from the USA – Our orders ship from US fulfillment warehouses in California, Illinois, and New Jersey, based on the closest distribution center to your address.
📦 Order Processing – 1-2 business days from order placement.
🚚 Shipping Time – 3-5 business days from ship date via FedEx Ground or OnTrac (carrier selected by route).
📍 Free Shipping – Continental US, all orders.
📩 Full Tracking Included – You will receive an automatic tracking email the moment your order ships, with delivery updates along the way.
Questions before it arrives? Just reach out.
Emily's 30-Day Cool or It's Free Guarantee
Emily's 30-Day Cool or It's Free Guarantee
🛡️ Emily's Promise – If the SilentCool doesn't cool your room the way we say it will, we'll make it right. Simple as that.
📦 Hassle-Free Returns – Contact us within 30 days and we'll guide you through every step. No runaround, no fine print.
📩 Real Human Support – You'll talk to a real person, not a bot. Every time.
For complete details, see our Return & Refund Policy or reach us directly.
Three summers of waking up at 3 AM soaked in sweat. Set the SilentCool up on a Thursday evening. By Friday night my bedroom was 68°F. What got me wasn't just the cold — it was the silence. I genuinely forgot it was running.
Jessica M. — Brooklyn, NY
My attic home office is 10°F hotter than the rest of the house all summer. Previous window ACs were too loud for client Zoom calls. The SilentCool runs at 42 dB — nobody on the call hears it. I haven't sweat through a meeting since the day it arrived.
Sandra W. — Austin, TX
July electric bill: $410 running central AC all day. August: $195 using the SilentCool on Energy Saver mode in the rooms we actually live in. Same house, same brutal Texas summer. Paid for itself in under three weeks.
George H. — Dallas, TX
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📋 What's Included
⭐️ Customer Reviews
❓ FAQ
Real People. Real Cool Rooms. Real Sleep.
You've been kept awake by your own AC rattling and cycling all night. You've suffered through summers with fans that don't cool. You've put up with window units that sound like a jet engine on full blast.
Here's why the SilentCool is the last window AC you'll ever need to buy.
4 Reasons the SilentCool Is the Last Window AC You'll Ever Buy
3,200+ People Finally Sleeping Through the Night
Renters. Homeowners. Remote workers. Seniors. People who gave up on window ACs — then found one that actually lets them sleep.
Built to Last — Not Just One Summer
The Last Window AC You'll Need to Buy.
ABS housing. Galvanized steel plate. Copper components throughout. The SilentCool is built from the same materials as units costing three times the price. Real customers report running it 12–16 hours a day all season with zero performance drop. The washable filter means no expensive replacements — clean it, reinstall it, done. Backed by a 365-day warranty and support that actually picks up the phone.
Install it tonight. Sleep cool and quiet — starting now.
Cold Air in Under 20 Minutes. Here's Exactly How.
Step 1: Place the SilentCool in your window — fits any double-hung window 24 to 48 inches wide with sill depth up to 11 inches.
Step 2: Attach the foam sealers and mounting block. Everything is included. Takes about 15 minutes.
Step 3: Plug into any standard 115V outlet and press Power.
That's it. No contractor. No drilling. No special tools. The 16.5 ft remote means you set the temperature from your bed and never have to get up to adjust it again.
They were exactly where you are right now. Here's what happened.
Hot apartments. Noisy window ACs that kept them awake. Renters and homeowners who gave up on window units — then found one that actually lets you sleep. Read what actually happened.
"I actually cried. I'd forgotten what sleeping cool — and quiet — felt like."
"Three summers of waking up at 3 AM soaked in sweat. My old window AC was either too loud to sleep with or not cold enough to matter. Set the SilentCool up Thursday evening. By Friday night my bedroom was 68°F and I genuinely couldn't tell it was running. I sat on my bed and cried. I'd forgotten what sleeping cool and quiet felt like."
Brooklyn, NY
"My electric bill dropped $215 in one month. Energy Saver mode is real."
"July: $410 running central AC all day. August: $195 running the SilentCool on Energy Saver mode in the rooms we actually live in. Same brutal Texas summer. Same house. Same family. The Energy Saver mode actually cycles off when the room hits temperature. You're not paying to cool a room that's already cool. Paid for itself in three weeks."
Dallas, TX
"42 dB. My Zoom clients have no idea it's running six feet away."
"My attic home office is 10°F hotter than the rest of the house. Previous window ACs were too loud for client calls — I could hear them through the mic. The SilentCool runs at 42 dB and nobody on the call has ever mentioned hearing anything. I look refreshed and professional on camera for the first time all summer."
Austin, TX
3,200+ Real Buyers. Real Rooms. Real Sleep.
★★★★★
Customer Photos
★★★★★
Retired my $400 Dyson and my loud old window unit the same week
Had two problems: a Dyson fan that moved hot air beautifully and did nothing useful, and an old window AC so loud my neighbors could hear it through the wall. The SilentCool replaced both. Installed in about 20 minutes. Hit Cool. Within 20 minutes my bedroom dropped from 84°F to 72°F. But the thing that got me was the silence. I kept walking over to check if it was actually running. 42 dB is not marketing — I measured it with a decibel meter. 41.8 dB on Quiet speed. Listed the old window unit and the Dyson the same day. Made back a chunk of what I paid. Zero regrets.
★★★★★
UPDATE: 11 months in. Still silent. Still cold. Just ordered a second.
Original review (August): Installed and it's genuinely as quiet as they say. Cautiously optimistic. 3-month update: Running the SilentCool every single day in Texas heat. Electric bill down from $340/month to $185/month with Energy Saver mode. 6-month update: Works exactly like day one. Noise level unchanged. No rattling, no new sounds, nothing. 11-month update: Just ordered a second for the living room. Saved over $1,500 in electricity. The silence at 42 dB is still the thing I can't get over. I've had window ACs for 20 years and this is categorically different.
★★★★★
HVAC contractor, 22 years. The 42 dB claim is accurate. Here's why.
I install HVAC systems for a living. When my wife showed me this I was skeptical — window units are notoriously loud because the compressor vibration transfers directly into the window frame. Measured it with calibrated equipment. On Quiet speed: 41 dB. On Low: 43 dB. On High: 52 dB. The copper components and galvanized plate construction actually dampen vibration significantly compared to the cheap stamped-steel units most manufacturers use. Cooling performance tested at 400 sq ft room: reached target temp in 28 minutes on a 94°F day. The 100-degree horizontal oscillation distributes air properly — no cold spot directly in front and warm corners. I've started recommending these to clients who can't do central AC. That's a significant statement from me.
★★★★★
My landlord banned window ACs in writing. This one changed that conversation.
My lease had a specific clause: no window air conditioners. My landlord's reason: the old ones damaged window frames and leaked water into the walls. I showed him the SilentCool specs — foam sealers, mounting block, no drainage issues. He looked it over for ten minutes. Agreed in writing that this specific model was acceptable. My bedroom stays at 71°F all night. My landlord has been in my apartment twice since. No complaints. No drama. If your lease bans window units because of damage concerns, this is the one to show your landlord.
★★★★★
Engineer. Logged temps and dB levels every 30 minutes for a month. Here are the numbers.
Four-sensor wireless thermometer. Calibrated decibel meter. 30 days of data. Noise measurements (12K unit): - Quiet speed: 41.2 dB average - Low speed: 43.8 dB average - High speed: 53.1 dB average Cooling performance — 380 sq ft bedroom, 84°F starting, door closed: - After 15 min: 76°F - After 30 min: 71°F - Steady state: 69°F Energy Saver mode comparison: 31% lower energy use vs running continuously at the same setpoint. The compressor cycles off when room hits temperature and back on when it rises 2°F. Works exactly as advertised. The data validates every claim on the product page.
★★★★★
My wife has MS. Heat triggers her symptoms. 42 dB means she can actually sleep.
MS means heat sensitivity AND sound sensitivity. Most window ACs cool her room but keep her awake with cycling noise. We needed both solved at once. The SilentCool on Sleep mode at 42 dB. She can't hear it. The room holds 72°F. She sleeps through the night for the first time in three summers. Last Saturday she made lunch, sat in the living room all afternoon, and read on the patio. Three things she hasn't done on a summer day in years. Both problems solved by one product. I cannot overstate what that means to our family.
Verified Reviews Only
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Sign In to ContinueWe hear this skepticism constantly — and it's earned. Most window AC noise claims are marketing. The SilentCool's 42 dB or less is verified by multiple real buyers who measured it with calibrated decibel meters. One HVAC contractor with 22 years experience measured 41 dB on Quiet speed. An engineer logged it at 41.3 dB on Quiet and 43.7 dB on Low over 30 days. The reason it's actually quiet: ABS housing, galvanized plate, and copper components dampen compressor vibration instead of transmitting it into the window frame like cheap stamped-steel units do. At 42 dB it's quieter than a whispered conversation. If it doesn't match what we describe, Emily's 30-Day Guarantee covers you completely.
The 10,000 BTU (6,300 SACC) is rated for rooms up to 250 sq ft — a standard bedroom, home office, or large dorm room. The 12,000 BTU (8,100 SACC) is rated for rooms up to 400 sq ft — a larger bedroom, open living area, or studio apartment. When in doubt, go with the 12K. A unit that's slightly oversized for your room reaches temperature faster and cycles less — which means even quieter operation overall. If your room is right on the edge of the 10K capacity, the 12K will serve you better.
The SilentCool fits standard double-hung windows with these measurements: - Window width: 24 to 48 inches - Maximum sill depth: 11 inches It does NOT fit casement windows (the kind that open outward like a door) or sliding windows (the kind that open sideways). It's designed for double-hung windows — the standard kind where the bottom sash slides up. If you're unsure, measure your window width and sill depth before ordering. Message us if you want to confirm compatibility — we'd rather verify it works for you.
Most buyers report 15–20 minutes for a complete installation. Everything you need is included: top foam sealer, mounting block, four foam sealers, user manual. No special tools required beyond a standard screwdriver. The process: place the unit in the open window, attach the foam sealers to seal the gaps, install the mounting block for stability, plug into any standard 115V outlet. Real buyers aged 19 to 75 report installing it independently. A 75-year-old reviewer who lives alone had cold air running in under 20 minutes.
Energy Saver mode cycles the compressor and fan off once the room reaches your set temperature, then turns them back on when the temperature rises 2°F above your setpoint. This means you're only running the compressor when you actually need it — not paying to maintain a room that's already at your target temperature. One buyer with a calibrated setup measured 31% lower energy consumption in Energy Saver mode vs running continuously at the same temperature setpoint. Multiple buyers report saving $150–$215/month compared to running central AC all day. Energy Saver mode is also quieter — the unit cycles off completely between cooling cycles rather than running the fan continuously.
Your Questions, Answered Honestly.
We know you've probably been burned before. So we're going to be straight with you.
Still Have Questions? Talk to Us.
Another hot night is coming. You already know exactly what it feels like to lie there sweating — and listening to a noisy AC cycle on and off.
You've suffered enough summers. You've been kept awake by your own air conditioner. The SilentCool ships within 1 business day. Cold air AND quiet sleep tonight. If it doesn't cool your room — or if it's not as quiet as we say — you pay nothing. That's Emily's promise.