---
product_id: 9724268
title: "AS1 AireShare Room-To-Room Fan Ventilator, Hardwired,70 CFM"
brand: "tjernlund"
price: "R5832"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Tjernlund"
url: https://www.desertcart.co.za/products/9724268-as1-aireshare-room-to-room-fan-ventilator-hardwired-70-cfm
store_origin: ZA
region: South Africa
---

# Hardwired 120V - stable, energy-efficient power 70 CFM airflow - powerful room-to-room transfer Ultra-quiet blower - whisper-quiet comfort AS1 AireShare Room-To-Room Fan Ventilator, Hardwired,70 CFM

**Brand:** tjernlund
**Price:** R5832
**Availability:** ✅ In Stock

## Summary

> 💨 Quietly conquer hot and cold spots with the Tjernlund AS1 — your home's invisible climate hero!

## Quick Answers

- **What is this?** AS1 AireShare Room-To-Room Fan Ventilator, Hardwired,70 CFM by tjernlund
- **How much does it cost?** R5832 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/9724268-as1-aireshare-room-to-room-fan-ventilator-hardwired-70-cfm)

## Best For

- tjernlund enthusiasts

## Why This Product

- Trusted tjernlund brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Whisper-Quiet Operation:** Engineered with a low-watt, tangential blower that keeps noise under the radar.
- • **Energy-Savvy Performance:** Delivers 70 CFM airflow at just 0.12 CFM per watt, optimizing comfort without the energy guilt.
- • **DIY-Friendly Installation:** Includes cutting templates and mounting hardware for a smooth, professional setup.
- • **Seamless Comfort Transfer:** Effortlessly balances temperature between rooms for year-round coziness.
- • **Sleek, Space-Smart Design:** Flush diffuser fits into walls as shallow as 3 inches, blending into your modern home.

## Overview

The Tjernlund AS1 AireShare is a hardwired, indoor room-to-room fan ventilator delivering 70 CFM airflow to transfer air through interior walls. Designed for ductless cooling and heating systems, it features a whisper-quiet tangential blower that fits flush into walls as shallow as 3 inches. Operating at 120 volts with energy-efficient performance, it reduces temperature imbalances between rooms while maintaining low noise levels. Ideal for enhancing comfort in adjacent spaces, it requires basic electrical wiring and includes installation hardware for a streamlined setup.

## Description

Transfer air to rooms that are too hot or cold. Extend comfort from ductless split systems and PTAC’s to rooms without air handlers. Also enhance the distribution of heat from fireplaces and stoves. Quiet tangential blower fits into walls as little as 3” deep. 60 CFM.

Review: A well made product that meets its intended function - This product helps solve the problem of a cooler (or hotter) room in your home, if you understand its purpose and limitations. 1. It takes air in the hotter room and moves it to a cooler adjacent room at a rate of 75 cubic feet/minute. The effect will depend upon the size of the room receiving the warmer air. 2. The output into the cooler room won't feel like the heat that comes from an air register on your heating system, which is usually about 90 degrees or more. The output air will be at the temperature of the "hotter" room, but because it is moving air, it will feel cooler than that on your skin. For this reason, you should not site the output register close to where anyone would be sitting. 3. Although the fan noise is relatively quiet (much quieter than a bathroom exhaust fan), the input grille shouldn't be placed anywhere where a continuous noise would be distracting. In my application, I was attempting to reduce the amount of electric baseboard heat used in our sunroom addition, which does not have any heating/air conditioning registers in it. I am taking heat from an adjacent utility room, which is small, but has a regular heating/cooling register. By placing the intake of the AirShare unit high up on the wall, it captures the heat trapped near the ceiling and transfer it to the sunroom, with the output register placed close to the floor. The fan noise in the utility room is not a problem, since we don't spend much time in there. There is no noticeable noise of the air exiting in the sunroom, and the register is located away from seating areas. Over the last few cold nights (readings in the teens!), the baseboard heat has been set to "low" and doesn't appear to be running as much. I will revise this review when I have some data on the impact on my electrical usage. The AirShare unit is well made and the fan is well-balanced. Installation was relatively easy, if you know how to locate wall studs, can handle a sheetrock saw and can safely do electrical wiring. i put a simple on/off switch in the fan circuit, since I expect to have to run the fan continuously during the heating season.
Review: Great Fan for Electronics Closet - MY NEED I have a closet I use for all my electronics. There are two servers, a DirecTV box, a receiver, a XBOX One and all of my networking equipment. In all, they give out enough heat to raise the temperature of the closet by about 30 degrees with the doors shut. We had too find a solution other than leaving the door open all the time. INSTALLATION Installation is very easy. The kit comes with a cutting diagram to make the proper cuts on both sides of the wall. You will need to find the studs, because the fan needs most of the space between the studs. Also, you will need to offset the supply and return sides vertically. The fan blows air into the dead space between the studs, the supply then catches this positive pressure and exits the air from the dead space through a very small plenum. It works very well. I also installed a thermostat (see below). This was very simple. I got a thermostat that was rated for inline usage. You won't be able to use a thermostat like the one in your house, you'll need one rated for at least 110v and 15amps. Anyway, I installed this inline and the fan is working great. I just put it between the power supply and the fan. Everything you need, other than the thermostat, came in the box. Screws, plates and mounting instructions. I would suggest getting a multitool to cut the wall, it makes installation much easier. Once installed, the entire thing looks great. GENERAL REVIEW So far, this is exactly what we were looking for. The fan is very quiet, barely noticeable at all. The supply plenum is very small, about 3 inches by 16 inches. In our installation, we put it just below the ceiling. You can feel the air if you put your hand beside it, but otherwise the hot air is dispersed very well. Because of the quiet sound and the direction of the plenum, most people don't even notice it all. As for the fan's ability to exhaust the air from the server closet, it works very well. It creates enough negative air pressure to pull the air from under the door, but still keep enough air moving to cool the room. If your room is sealed tight, you will need to figure out a way to get air into this room through another opening, but for us, the space between the door and the floor has been enough. THERMOSTAT In case you would like a thermostat, this one works: http://www.desertcart.com/gp/product/B000E7BTFO/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1 The manufacturer has a wireless thermostat is likes to sell, but it is unnecessary if you want to do the wiring yourself (and it costs over 100 bucks). Since the thermostat above is a lot cheaper, I chose it. I installed it so the fan would cutoff when the closet is below the temperature I feel is safe. Although the thermostat feels a little redundant now because the servers put out more sound than this fan does. It really is very quiet. I wouldn't mind just leaving it on all the time, but I went ahead and installed the thermostat.

## Features

- Transfer air through interior walls from room to room
- Use with ductless cooling and heating to transfer comfort to adjacent rooms
- Quiet, low watt blower. Dimensions - Diffuser:3 inches x 15 1/8 inches (flush), Diffuser Rough Opening: 1 1/4 inches Height x 13 5/8 inches Width Blower Grille: 7 3/4 inches x 15 3/4 inches (flush) Blower Rough Opening: 4 7/8 inches Height x 13 7/8 inches Width
- Staggered intake and discharge stop light and reduce room to room sound transfer
- Requires hard wiring to 120 VAC. Requires wall switch or thermostat (not included)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000UC7ACE |
| Air Flow Capacity | 70 Cubic Feet Per Minute |
| Best Sellers Rank | #392,515 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,053 in Household Ventilation Fans |
| Blade Length | 16 Inches |
| Brand | Tjernlund |
| Color | Red |
| Control Method | App |
| Date First Available | January 9, 2008 |
| Efficiency | 0.12 CFM per watt |
| Electric fan design | Blower |
| Form Factor | Split System |
| Global Trade Identification Number | 00080956954985 |
| Included Components | Fan |
| Indoor/Outdoor Usage | Indoor |
| Installation Type | Split system |
| Is Cordless? | No |
| Is Discontinued By Manufacturer | No |
| Item Weight | 9.2 pounds |
| Item model number | AS1 |
| Manufacturer | Tjernlund |
| Model Name | AS1 |
| Number of Power Levels | 1 |
| Power Source | Corded Electric |
| Product Dimensions | 3"D x 3"W x 15"H |
| Recommended Uses For Product | Cooling |
| Reusability | Reusable |
| Size | 70 CFM |
| Specification Met | certified frustration-free |
| Style | Modern |
| UPC | 080956954985 |
| Voltage | 120 Volts |
| Wattage | 584 watts |

## Product Details

- **Brand:** Tjernlund
- **Color:** Red
- **Controller Type:** Button Control
- **Electric fan design:** Blower
- **Material:** Plastic
- **Mounting Type:** Ceiling Mount,Wall Mount
- **Power Source:** Corded Electric
- **Product Dimensions:** 3"D x 3"W x 15"H
- **Recommended Uses For Product:** Cooling
- **Style:** Modern

## Images

![AS1 AireShare Room-To-Room Fan Ventilator, Hardwired,70 CFM - Image 1](https://m.media-amazon.com/images/I/61wF7buGGuL.jpg)

## Available Options

This product comes in different **Volume Capacity** options.

## Questions & Answers

**Q: What is its noise level when operating, in dB?    I want to keep an adjacent walk-in closet ventilated**
A: Intake room = 1.2 sones, target room = 1 sone.  1 sone = 40 Db.  Average talking noise is 70 db.

**Q: Can this unit also pull air from below the fan in the bay? (i have a buried hvac register in the same bay that may provide more heat/ac)**
A: Hi Todd, I have purchased several of these, I manage a senior retirement community with 120 apt. Most of which are 1bed 1bath. These apts are heated and cooled with a Ptac unit (the through the wall unit that you see in many hotels). Our apts had an ugly duct attached to the ptac unit that ran through the wall to condition the bed room. I used these fans to transfer the conditioned air to the bedroom and removed the ugly ducts. The temp difference from the living room (where the ptac is) to the bed room runs only 2 to 3 degrees which works well for us. I'm not sure what kind of bay and buried hvac unit you have thus the reason for this long answer. I hope this helps you.

**Q: minimum distance between the studs for vertical and horizantal application, grill dimensions?**
A: it is made to fit 16 inch studs

**Q: In terms of placement, what if i want to transfer heat in the winter and ac in the summer? more or less centered in the wall vs high-low?**
A: I use it as help for air conditioning , the fan is at the base of wall and the out let is high on wall at 4 to 5 ft high cold air is near the floor you push the air to 4 to 5 feet into room

## Customer Reviews

### ⭐⭐⭐⭐⭐ A well made product that meets its intended function
*by M***N on February 13, 2014*

This product helps solve the problem of a cooler (or hotter) room in your home, if you understand its purpose and limitations. 1. It takes air in the hotter room and moves it to a cooler adjacent room at a rate of 75 cubic feet/minute. The effect will depend upon the size of the room receiving the warmer air. 2. The output into the cooler room won't feel like the heat that comes from an air register on your heating system, which is usually about 90 degrees or more. The output air will be at the temperature of the "hotter" room, but because it is moving air, it will feel cooler than that on your skin. For this reason, you should not site the output register close to where anyone would be sitting. 3. Although the fan noise is relatively quiet (much quieter than a bathroom exhaust fan), the input grille shouldn't be placed anywhere where a continuous noise would be distracting. In my application, I was attempting to reduce the amount of electric baseboard heat used in our sunroom addition, which does not have any heating/air conditioning registers in it. I am taking heat from an adjacent utility room, which is small, but has a regular heating/cooling register. By placing the intake of the AirShare unit high up on the wall, it captures the heat trapped near the ceiling and transfer it to the sunroom, with the output register placed close to the floor. The fan noise in the utility room is not a problem, since we don't spend much time in there. There is no noticeable noise of the air exiting in the sunroom, and the register is located away from seating areas. Over the last few cold nights (readings in the teens!), the baseboard heat has been set to "low" and doesn't appear to be running as much. I will revise this review when I have some data on the impact on my electrical usage. The AirShare unit is well made and the fan is well-balanced. Installation was relatively easy, if you know how to locate wall studs, can handle a sheetrock saw and can safely do electrical wiring. i put a simple on/off switch in the fan circuit, since I expect to have to run the fan continuously during the heating season.

### ⭐⭐⭐⭐⭐ Great Fan for Electronics Closet
*by M***K on August 19, 2014*

MY NEED I have a closet I use for all my electronics. There are two servers, a DirecTV box, a receiver, a XBOX One and all of my networking equipment. In all, they give out enough heat to raise the temperature of the closet by about 30 degrees with the doors shut. We had too find a solution other than leaving the door open all the time. INSTALLATION Installation is very easy. The kit comes with a cutting diagram to make the proper cuts on both sides of the wall. You will need to find the studs, because the fan needs most of the space between the studs. Also, you will need to offset the supply and return sides vertically. The fan blows air into the dead space between the studs, the supply then catches this positive pressure and exits the air from the dead space through a very small plenum. It works very well. I also installed a thermostat (see below). This was very simple. I got a thermostat that was rated for inline usage. You won't be able to use a thermostat like the one in your house, you'll need one rated for at least 110v and 15amps. Anyway, I installed this inline and the fan is working great. I just put it between the power supply and the fan. Everything you need, other than the thermostat, came in the box. Screws, plates and mounting instructions. I would suggest getting a multitool to cut the wall, it makes installation much easier. Once installed, the entire thing looks great. GENERAL REVIEW So far, this is exactly what we were looking for. The fan is very quiet, barely noticeable at all. The supply plenum is very small, about 3 inches by 16 inches. In our installation, we put it just below the ceiling. You can feel the air if you put your hand beside it, but otherwise the hot air is dispersed very well. Because of the quiet sound and the direction of the plenum, most people don't even notice it all. As for the fan's ability to exhaust the air from the server closet, it works very well. It creates enough negative air pressure to pull the air from under the door, but still keep enough air moving to cool the room. If your room is sealed tight, you will need to figure out a way to get air into this room through another opening, but for us, the space between the door and the floor has been enough. THERMOSTAT In case you would like a thermostat, this one works: http://www.amazon.com/gp/product/B000E7BTFO/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1 The manufacturer has a wireless thermostat is likes to sell, but it is unnecessary if you want to do the wiring yourself (and it costs over 100 bucks). Since the thermostat above is a lot cheaper, I chose it. I installed it so the fan would cutoff when the closet is below the temperature I feel is safe. Although the thermostat feels a little redundant now because the servers put out more sound than this fan does. It really is very quiet. I wouldn't mind just leaving it on all the time, but I went ahead and installed the thermostat.

### ⭐⭐⭐⭐⭐ As advertised and works great!
*by J***E on March 10, 2010*

Just installed this fan and am very happy with it. Quiet, moves plenty of air and relatively easy to install. One comment is the instructions don't emphasize that both the fan and the diffuser are directional, that is, they each have an opening which must face the other. If this is not noticed, either unit's housing would block the air flow towards the other unit Tjernlund AireShare Room-To-Room Ventilator - Hardwired, Model# AS1 . Another thing to note is the possibility of a 'block' in the wall cavity. If one unit is mounted high and the other low, one needs to probe the cavity to make sure there is not a 2x4 block midway. The hard part of this installation is accessing and wiring power to the fan, which can involve cutting access holes in the wall and possibly installing a junction box. Not for the casual do it yourself person. In short, a professional product and far better than the usual cheap, noisy bathroom fan.

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-15*