---
product_id: 27347595
title: "DJ-3"
brand: "tjernlund"
price: "HK$3972"
currency: HKD
in_stock: true
reviews_count: 11
url: https://www.desertcart.hk/products/27347595-dj-3
store_origin: HK
region: Hong Kong
---

# Compact 11.5"W x 11.4"H x 11.4"D Automatic continuous draft control 115V powerful motor DJ-3

**Brand:** tjernlund
**Price:** HK$3972
**Availability:** ✅ In Stock

## Summary

> 🔥 Elevate your exhaust game — breathe easy with DJ-3!

## Quick Answers

- **What is this?** DJ-3 by tjernlund
- **How much does it cost?** HK$3972 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/27347595-dj-3)

## 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

- • **Durable & Adjustable:** Built for long-lasting performance with Vari-Draft control to tailor airflow to your exact needs.
- • **Smart Safety Pairing:** Optimized with UC1 and PS1505 controls for reliable, safe operation every time.
- • **Universal Compatibility:** Seamlessly integrates with boilers, furnaces, water heaters, ovens, and factory processes.
- • **Instant Ventilation Boost:** Eliminates venting issues from undersized chimneys and long vent runs for flawless airflow.
- • **Effortless Installation & Operation:** Quick setup with automatic draft induction keeps your system running smoothly without hassle.

## Overview

The Tjernlund DJ-3 In-Line Draft Inducer is a high-efficiency, compact exhaust fan designed to solve venting challenges caused by undersized chimneys, long vent runs, and negative building pressures. Compatible with multiple heating appliances, it ensures reliable combustion gas exhaust through automatic draft induction. Engineered for durability and paired with advanced controls, the DJ-3 guarantees safer, smoother operation and improved appliance performance.

## Description

Tjernlund In-Line Draft Inducers assure positive draft when restricted boilers and furnaces, poor chimneys or negative pressures in buildings prevent proper exhaust of combustion gases. The venturi action starts air moving up the stack instantly & keeps it moving smoothly. These units are quick and easy to install and completely automatic in operation. In-Line Draft Inducers are built for long-lasting, trouble-free service and available in sizes and capacities to meet virtually all heating system requirements. The Vari-Draft control permits adjustment to individual job requirements.

Review: Good product but... - The good: The draft inducer works great. We bought it to help with a smoke problem in our newly built coal fired forge. The inducer works great! We were a little skeptical about its ability to move enough air to be effective. It turns out to have plenty of volume. The installation was a little tricky but the wiring was a piece of cake. I wish it would come with all the hardware. Missing was a conduit clamp that you have to use to keep the incoming conduit from getting cut over time. The bad: Well, it really isn't all that bad. Just annoying. The problem is in the template. You have to be VERY careful when applying the template to the exhaust tube or it will not line up square which causes the mounting holes to be off just enough to be problematic. Once the hole is cut out in that case, it can't really be easily fixed properly. We wound up replacing one piece of the exhaust tube. Luckily I had made a copy of the template just in case. Overall thought this is a good product. Hopefully it will last for the long haul.
Review: Works well - My gas water heater is a crappy Rheem low NOx with motorized damper valve unit that only works well when there is a strong flue draft or when the water heater has been running and the flue is warm. If it were not for a local gas company rebate i would not have gotten this unreliable low NOx version. However, this draft inducer fan makes the gas heater run more reliably and the heater does not fault out and throw error codes as much, and it is about an order of magnitude more reliable than before. This fan did the trick. I used a generous amount of high temp heat duct aluminum foil tape to seal the pipe around and after the fan to make sure exhaust gases are not coming into the house. The fan makes some noise and a little bit of vibration, but it is acceptable and inline with my expectations. I put in a breakbean IR sensor on the motorized damper valve with a relay to only turn on the draft inducer fan when the damper is open. Its been working well for a year now so far.

## Features

- Solves venting problems due to undersized chimneys, long vent runs, down drafts and negative pressures
- Uses with Boilers, Furnaces, Water Heaters, Ovens, and Factory Processes
- Can be used with multiple appliances (additional controls required)
- Vents/Chimneys utilizing In-Line Draft Inducers must be vertically terminated above the roof line
- Should be paired with UC1, PS1505 and possibly other controls for safe operation

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000LDILWK |
| Best Sellers Rank | #409,275 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #388 in HVAC Controls |
| Brand | Tjernlund |
| Color | Multicolored |
| Control Method | Touch |
| Date First Available | September 13, 2010 |
| Efficiency | High |
| Electric fan design | Exhaust Fan |
| Global Trade Identification Number | 00080956101013 |
| Included Components | Blower |
| Indoor/Outdoor Usage | Indoor |
| Is Cordless? | No |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.01 ounces |
| Item model number | DJ-3 |
| Manufacturer | Tjernlund Products |
| Model Name | DJ-3 |
| Number of Power Levels | 1 |
| Power Source | Corded Electric |
| Product Dimensions | 11.4"D x 11.5"W x 11.4"H |
| Recommended Uses For Product | Exhausting |
| Reusability | Reusable |
| Specification Met | uc1 |
| Style | Modern |
| UPC | 080956101013 |
| Voltage | 115 Volts |

## Product Details

- **Brand:** Tjernlund
- **Color:** Multicolored
- **Electric fan design:** Exhaust Fan
- **Material:** Plastic Or Metal
- **Mounting Type:** Ceiling Mount
- **Power Source:** Corded Electric
- **Product Dimensions:** 11.4"D x 11.5"W x 11.4"H
- **Recommended Uses For Product:** Exhausting
- **Style:** Modern
- **Voltage:** 115 Volts

## Images

![DJ-3 - Image 1](https://m.media-amazon.com/images/I/816m7R0liLL.jpg)
![DJ-3 - Image 2](https://m.media-amazon.com/images/I/514Q2cW2rbL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product but...
*by J***N on November 29, 2020*

The good: The draft inducer works great. We bought it to help with a smoke problem in our newly built coal fired forge. The inducer works great! We were a little skeptical about its ability to move enough air to be effective. It turns out to have plenty of volume. The installation was a little tricky but the wiring was a piece of cake. I wish it would come with all the hardware. Missing was a conduit clamp that you have to use to keep the incoming conduit from getting cut over time. The bad: Well, it really isn't all that bad. Just annoying. The problem is in the template. You have to be VERY careful when applying the template to the exhaust tube or it will not line up square which causes the mounting holes to be off just enough to be problematic. Once the hole is cut out in that case, it can't really be easily fixed properly. We wound up replacing one piece of the exhaust tube. Luckily I had made a copy of the template just in case. Overall thought this is a good product. Hopefully it will last for the long haul.

### ⭐⭐⭐⭐⭐ Works well
*by L***J on July 31, 2023*

My gas water heater is a crappy Rheem low NOx with motorized damper valve unit that only works well when there is a strong flue draft or when the water heater has been running and the flue is warm. If it were not for a local gas company rebate i would not have gotten this unreliable low NOx version. However, this draft inducer fan makes the gas heater run more reliably and the heater does not fault out and throw error codes as much, and it is about an order of magnitude more reliable than before. This fan did the trick. I used a generous amount of high temp heat duct aluminum foil tape to seal the pipe around and after the fan to make sure exhaust gases are not coming into the house. The fan makes some noise and a little bit of vibration, but it is acceptable and inline with my expectations. I put in a breakbean IR sensor on the motorized damper valve with a relay to only turn on the draft inducer fan when the damper is open. Its been working well for a year now so far.

### ⭐⭐⭐ works ok, but vibrates
*by G***. on December 2, 2025*

Works as intended, however the vibration is pretty annoying. When the motor runs, the metal wiring enclosure vibrates and hums / resonates loud enough to be heard on the next floor (the boiler / furnace is in the basement). I plan to attempt to balance it, but shouldn't need to.

## Frequently Bought Together

- Tjernlund DJ-3 Inline Draft Inducer Fan for Vertical Vent Systems for All Fuels
- Tjernlund PS1505 Fan Proving Safety Interlock Switch for Draft Inducer Fans
- Tjernlund UC1 Universal Safety Interlock Control for Sidewall Power Venters, Draft Inducers and Combustion Air Fans

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.hk/products/27347595-dj-3](https://www.desertcart.hk/products/27347595-dj-3)

---

*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-13*