---
product_id: 56119729
title: "AC Infinity AIRTAP T4 Bronze, Register Booster Fan for 4” x 10” Register Holes, Improves Heating & Cooling Vents, Quiet 10-Speeds, Bluetooth App Control Data Alerts. ONLY FITS 4” x 10” Duct Openings"
brand: "ac infinity"
price: "$201"
currency: NZD
in_stock: true
reviews_count: 7
category: "Ac Infinity"
url: https://www.desertcart.nz/products/56119729-ac-infinity-airtap-t4-bronze-register-booster-fan-for-4
store_origin: NZ
region: New Zealand
---

# 130 CFM airflow boost Bluetooth app control Ultra-quiet 17 dBA noise AC Infinity AIRTAP T4 Bronze, Register Booster Fan for 4” x 10” Register Holes, Improves Heating & Cooling Vents, Quiet 10-Speeds, Bluetooth App Control Data Alerts. ONLY FITS 4” x 10” Duct Openings

**Brand:** ac infinity
**Price:** $201
**Availability:** ✅ In Stock

## Summary

> 💨 Elevate your airflow game — smart, silent, and seriously efficient!

## Quick Answers

- **What is this?** AC Infinity AIRTAP T4 Bronze, Register Booster Fan for 4” x 10” Register Holes, Improves Heating & Cooling Vents, Quiet 10-Speeds, Bluetooth App Control Data Alerts. ONLY FITS 4” x 10” Duct Openings by ac infinity
- **How much does it cost?** $201 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/56119729-ac-infinity-airtap-t4-bronze-register-booster-fan-for-4)

## Best For

- ac infinity enthusiasts

## Why This Product

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

## Key Features

- • **Perfect Fit Guarantee:** Specifically engineered for 4” x 10” register openings to maximize HVAC efficiency
- • **Smart App Integration:** Bluetooth connectivity unlocks advanced programming, alerts & real-time climate data
- • **Sleek & Durable Design:** Premium anodized aluminum frame with CNC-machined finish for a flush, modern look
- • **Precision Climate Control:** 10-speed fan with heating & cooling triggers for tailored airflow
- • **Energy-Efficient Performance:** 6-watt DC motor delivers powerful airflow while slashing energy costs

## Overview

The AC Infinity AIRTAP T4 Bronze is a high-performance register booster fan designed exclusively for 4” x 10” duct openings. Featuring a powerful dual 92mm fan delivering up to 130 CFM airflow at an ultra-quiet 17 dBA, it offers 10-speed settings with smart heating and cooling triggers. Controlled via Bluetooth app, users can customize schedules, receive alerts, and monitor climate data in real time. Its premium anodized aluminum frame ensures a sleek, flush installation that enhances any modern home HVAC system while reducing energy costs with a low 6-watt DC motor.

## Description

desertcart.com: AC Infinity AIRTAP T4 Bronze, Register Booster Fan for 4” x 10” Register Holes, Improves Heating & Cooling Vents, Quiet 10-Speeds, Bluetooth App Control Data Alerts. ONLY FITS 4” x 10” Duct Openings : Home & Kitchen

Review: Best. (Small) Investment. Ever. - Our master bedroom is the furthest room from our central A/C. Due to the awkward layout of our cookie-cutter home, the lone vent that serves our bedroom snakes through 4 90s and transitions from sheet metal to flex, to sheet metal, and back to flex again as it goes through 2 separate floor cavities and up through a 2x6 interior wall. Long story short, it has never had adequate airflow to cool our room, especially during the 100°F+ dog days of summer. We already have a ceiling fan which does help, but it mostly just blows the warm air around the room. In the past, I've just run our central fan A LOT to continuously move air through the bedroom. Problem is, that means the central fan is always running circulating air through the whole house for the benefit of just 1 room. And running it all the time increases our power bill up by around $50/mo. Then I saw these vent boosters and thought "what if I used a 6 watt booster fan 24 hours per day instead of running our central fan almost all the time to see if it will achieve the same results?" Well I'm here to tell you, THE RESULTS ARE EVEN BETTER! I have the vent fan set to run full blast, 24 hours per day. And our room has stayed 8-10 degrees cooler than before, even through a record number of consecutive 100°F+ days this season. Since it keeps running when the A/C is not, it keeps pulling cool air through the cool evaporator coil even though the main fan is off. So the air it pulls through almost never even hits 70°F on the vent's thermostat. What's even better? Despite all those additional days of extreme heat this year, my power bill was about $50/mo less than previous years for the same months! So it paid for itself in a single month! So is it noisy? Yeah, a little, especially on the highest settings. But I can comfortably watch TV at a normal volume right next to it at a setting of 7 or lower. And since I sleep 5 feet from it, the Bluetooth app makes it really easy to adjust when we're in the room and need it a little quieter. We actually like the noise on high while we're sleeping, the white noise helps us sleep better. I leave it at a 10 at all times if I'm not trying to watch a show next to it. Conclusion: if it seems like this vent fan may be a good idea for a room that won't get cool or warm enough depending on the season due to an inefficient central air system, it is. Buy it today. You won't regret it. Sidenote, I'm in IT and I've used other AC Infinity products to cool expensive and important data equipment for a couple years now. They're all excellent. Better quality, quieter, and more useful features than units that cost 3X as much. This company knows what they're doing, and I can't sing their praises enough.
Review: Very Impressed - First off let me say I'm highly impressed with this product. I purchased this back in September and wanted to wait for it to get alot colder before writing my review. Its now averaging in the 30s daily so this unit is doing alot of work. My house had an addition put on many years before I bought it. I've lived here now for 20 years, and the master bedroom in the addition was also supper cold compared to the other bedrooms. When I first looked into this the prior homeowner only attached a 4" flex duct off the main duct from the furnance and ran that through the crawl space, up the wall to registers, for a 20X25ft room. Needless to say for the past 20 years I've went through several heating blankets. The heating blankets are nice, once your under them, but when you get out, or even enter the room, its like 10+ degrees colder than the hallway. Not to mention the bedroom has vaulted ceiling. Anyhow I purchased on of these back in September hoping it would help with pulling in air flow into my bedroom. Since its been getting colder I can really evaluate its performance. To summary how this has been working for me would be best described with one word, AWESOME! I wasn't sure what to expect, but this register is working better than expected. To start, its easy to install and program when to kick on/off. I had a outlet nearby, so no issues with getting it powered. It runs automatically and has been keeping my bedroom much warmer, pretty much within a couple degrees of what the downstairs thermostat is set at. I no longer need a heating blanket as this keeps my room warm. Not only have I felt the increased flow when its on form the single vent I replaced it with, but also the original vent on the other side of the room is also now blowing out with more force. This is probably that both vents come from that single 4" feed from the main duct. That was a nice surprise. I was thinking I might need to buy two, but the one is doing the trick. The only con to this product is the noise of the fans. I've chosen to have the fan motor on its highest setting since its a big room and the fan noise is a little loud. But that "loudness" is subjective to each persons perception. For me it doesn't bother me as I often have box fans running in a corner to drown out the noise of my kids who stay up later than I at night, so I can fall asleep. Personally I've had no issues with the fan noise. I'm very happy I found and purchased this register, I would recommend it for anyone who is looking to increase air flow like I was. My only other concern is what is the life ratings on the fans? I'm imagining these are probably quite long, as they look similar to ones in computers, which I know last years. I hope its the same or longer.

## Features

- A register fan designed to boost and improve existing airflow from register holes in home HVAC systems.
- Smart controller features 10-level speeds, heating and cooling triggers, and timer and cycle programming.
- Connect to our app via Bluetooth to unlock advance programs, set alarms & notifications, and view climate data.
- Premium anodized aluminum frame with CNC-machined detailing for a flush and clean appearance.
- FITS ONLY 4 x 10 in. REGISTERS | Rear Casing: 3.93 x 9.76 in. | Engine: Dual 92 mm | Airflow: 130 CFM | Noise: 17 Dba | Color: Bronze

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0792R5KJF |
| Air Flow Capacity | 120 Cubic Feet Per Minute |
| Batteries required | No |
| Best Sellers Rank | #2,071 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Household Ventilation Fans |
| Brand | AC Infinity |
| Color | Bronze |
| Control Method | App |
| Customer Reviews | 4.3 4.3 out of 5 stars (22,756) |
| Efficiency | 20 CFM per watt |
| Electric fan design | Exhaust Fan |
| Finish Type | Brushed |
| Finish types | Brushed |
| Included Components | Cord |
| Indoor/Outdoor Usage | Indoor |
| Installation Type | surface-mounted |
| Is Cordless? | No |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.01 ounces |
| Item model number | AC-RBF4-B |
| Manufacturer | AC Infinity |
| Model Name | AC-RBF4-B |
| Motor Type | DC |
| Noise Level | 18 Decibels |
| Number of Power Levels | 10 |
| Power Source | Corded Electric |
| Product Dimensions | 1.96"D x 11.54"W x 5.51"H |
| Recommended Uses For Product | Air Circulation, Cooling |
| Room Type | Bedroom |
| Size | 4” x 10" |
| Special Feature | Bladeless |
| Style | Contemporary |
| UPC | 819137020238 |
| Voltage | 12 Volts |
| Wattage | 6 watts |

## Product Details

- **Brand:** AC Infinity
- **Color:** Bronze
- **Electric fan design:** Exhaust Fan
- **Mounting Type:** Free Standing
- **Power Source:** Corded Electric
- **Product Dimensions:** 1.96"D x 11.54"W x 5.51"H
- **Recommended Uses For Product:** Air Circulation, Cooling
- **Room Type:** Bedroom
- **Special Feature:** Bladeless
- **Style:** Contemporary

## Images

![AC Infinity AIRTAP T4 Bronze, Register Booster Fan for 4” x 10” Register Holes, Improves Heating & Cooling Vents, Quiet 10-Speeds, Bluetooth App Control Data Alerts. ONLY FITS 4” x 10” Duct Openings - Image 1](https://m.media-amazon.com/images/I/718HKhV1h8L.jpg)

## Questions & Answers

**Q: Give me an example of your temperature settings?  I’m confused on how to set it.**
A: There are three settings that can be adjusted: Fan speed, Cooling Temperature Threshold, and Heating Temperature Threshold.  The manual recommends only having the heating OR cooling thresholds set at one time, but as long as you keep a large enough temperature differential between them you shouldn't have issues.  If your room temperature is currently 72 degrees, and you turn on your AC you would want to set the cooling temperature to something like 65 degrees.  This way, when cold air from the AC begins to pass through the vent, the displayed temperature will begin to drop from 72 down to 65 degrees and below (because the air from AC is much colder than 65).  When the vent registers the temperature is 65, it will kick the fans on for all temperatures colder than 65.  The fans will stay on until enough time has passed when the AC is off that the temperature gets warmer than 65.  Likewise for heating, you would want to set a temperature like 80 degrees, so that when the heater begins blowing warm air and the vent registers that the temperature has raised, it will be on as long as the temperature at the vent is warmer than 80 degrees.

**Q: Will this work well with a geothermal system that does not output as extreme temperatures as a traditional gas/electric heater?**
A: Yes. I have a geothermal system (WaterFurnace), and haven’t had a problem with the unit starting when heat kicks on. It’s made a noticeable difference in the room (furthest from furnace) where we are using it. Well made unit, impressive packaging.

**Q: Can it be used in the floor where it might be stepped on?**
A: It is very sturdy, but if you step on the digital screen and buttons it may crack. Also, wouldn't recommend placing in a traffic area because of the cord that runs to wall outlet. Really solid system.

**Q: Do you have a version of this for a baseboard unit?**
A: No

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best. (Small) Investment. Ever.
*by C***N on September 2, 2024*

Our master bedroom is the furthest room from our central A/C. Due to the awkward layout of our cookie-cutter home, the lone vent that serves our bedroom snakes through 4 90s and transitions from sheet metal to flex, to sheet metal, and back to flex again as it goes through 2 separate floor cavities and up through a 2x6 interior wall. Long story short, it has never had adequate airflow to cool our room, especially during the 100°F+ dog days of summer. We already have a ceiling fan which does help, but it mostly just blows the warm air around the room. In the past, I've just run our central fan A LOT to continuously move air through the bedroom. Problem is, that means the central fan is always running circulating air through the whole house for the benefit of just 1 room. And running it all the time increases our power bill up by around $50/mo. Then I saw these vent boosters and thought "what if I used a 6 watt booster fan 24 hours per day instead of running our central fan almost all the time to see if it will achieve the same results?" Well I'm here to tell you, THE RESULTS ARE EVEN BETTER! I have the vent fan set to run full blast, 24 hours per day. And our room has stayed 8-10 degrees cooler than before, even through a record number of consecutive 100°F+ days this season. Since it keeps running when the A/C is not, it keeps pulling cool air through the cool evaporator coil even though the main fan is off. So the air it pulls through almost never even hits 70°F on the vent's thermostat. What's even better? Despite all those additional days of extreme heat this year, my power bill was about $50/mo less than previous years for the same months! So it paid for itself in a single month! So is it noisy? Yeah, a little, especially on the highest settings. But I can comfortably watch TV at a normal volume right next to it at a setting of 7 or lower. And since I sleep 5 feet from it, the Bluetooth app makes it really easy to adjust when we're in the room and need it a little quieter. We actually like the noise on high while we're sleeping, the white noise helps us sleep better. I leave it at a 10 at all times if I'm not trying to watch a show next to it. Conclusion: if it seems like this vent fan may be a good idea for a room that won't get cool or warm enough depending on the season due to an inefficient central air system, it is. Buy it today. You won't regret it. Sidenote, I'm in IT and I've used other AC Infinity products to cool expensive and important data equipment for a couple years now. They're all excellent. Better quality, quieter, and more useful features than units that cost 3X as much. This company knows what they're doing, and I can't sing their praises enough.

### ⭐⭐⭐⭐⭐ Very Impressed
*by S***L on December 22, 2021*

First off let me say I'm highly impressed with this product. I purchased this back in September and wanted to wait for it to get alot colder before writing my review. Its now averaging in the 30s daily so this unit is doing alot of work. My house had an addition put on many years before I bought it. I've lived here now for 20 years, and the master bedroom in the addition was also supper cold compared to the other bedrooms. When I first looked into this the prior homeowner only attached a 4" flex duct off the main duct from the furnance and ran that through the crawl space, up the wall to registers, for a 20X25ft room. Needless to say for the past 20 years I've went through several heating blankets. The heating blankets are nice, once your under them, but when you get out, or even enter the room, its like 10+ degrees colder than the hallway. Not to mention the bedroom has vaulted ceiling. Anyhow I purchased on of these back in September hoping it would help with pulling in air flow into my bedroom. Since its been getting colder I can really evaluate its performance. To summary how this has been working for me would be best described with one word, AWESOME! I wasn't sure what to expect, but this register is working better than expected. To start, its easy to install and program when to kick on/off. I had a outlet nearby, so no issues with getting it powered. It runs automatically and has been keeping my bedroom much warmer, pretty much within a couple degrees of what the downstairs thermostat is set at. I no longer need a heating blanket as this keeps my room warm. Not only have I felt the increased flow when its on form the single vent I replaced it with, but also the original vent on the other side of the room is also now blowing out with more force. This is probably that both vents come from that single 4" feed from the main duct. That was a nice surprise. I was thinking I might need to buy two, but the one is doing the trick. The only con to this product is the noise of the fans. I've chosen to have the fan motor on its highest setting since its a big room and the fan noise is a little loud. But that "loudness" is subjective to each persons perception. For me it doesn't bother me as I often have box fans running in a corner to drown out the noise of my kids who stay up later than I at night, so I can fall asleep. Personally I've had no issues with the fan noise. I'm very happy I found and purchased this register, I would recommend it for anyone who is looking to increase air flow like I was. My only other concern is what is the life ratings on the fans? I'm imagining these are probably quite long, as they look similar to ones in computers, which I know last years. I hope its the same or longer.

### ⭐⭐⭐⭐⭐ Review
*by A***R on December 25, 2025*

Used this to cool a PC in a cabinet. Works very well and have no issues. Seems like it’s built to last and the remote gives you total control or you can set it to activate on temperature.

## Frequently Bought Together

- AC Infinity AIRTAP T4 Bronze, Register Booster Fan for 4” x 10” Register Holes, Improves Heating & Cooling Vents, Quiet 10-Speeds, Bluetooth App Control Data Alerts
- Eureka Air Under Furniture Magnetic Vent Extender, 1.5mm Thick Heavy Duty Premium Material, Fits Floor Registers 10" and 12" Wide, Adjusts from 17" to 33" Long

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-18*