---
product_id: 6733456
title: "Tjernlund PS1503 Pressure Activation Switch for Duct Fans in Central Heating and Air Conditioning Systems"
brand: "tjernlund"
price: "KD 32.20"
currency: KWD
in_stock: true
url: https://www.desertcart.com.kw/products/6733456-tjernlund-ps1503-pressure-activation-switch-for-duct-fans-in-central
store_origin: KW
region: Kuwait
---

# 6.4" L x 6.5" W x 6.7" H Pressure activation Made in USA Tjernlund PS1503 Pressure Activation Switch for Duct Fans in Central Heating and Air Conditioning Systems

**Brand:** tjernlund
**Price:** KD 32.20
**Availability:** ✅ In Stock

## Summary

> 🌬️ Elevate Your Airflow Game!

## Quick Answers

- **What is this?** Tjernlund PS1503 Pressure Activation Switch for Duct Fans in Central Heating and Air Conditioning Systems by tjernlund
- **How much does it cost?** KD 32.20 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/6733456-tjernlund-ps1503-pressure-activation-switch-for-duct-fans-in-central)

## 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

- • **Compact Design:** Space-saving dimensions fit effortlessly into your setup.
- • **Durable Performance:** Built to last, ensuring consistent operation in any environment.
- • **Optimize Your Comfort:** Seamlessly integrates with duct fans for efficient climate control.
- • **Precision Engineering:** Designed for reliable pressure activation in HVAC systems.
- • **User-Friendly Installation:** Quick and easy setup for immediate comfort enhancement.

## Overview

The Tjernlund PS1503 Pressure Activation Switch is a high-quality HVAC control device designed for duct fans in central heating and air conditioning systems. Manufactured in the USA, it features compact dimensions of 6.4" L x 6.5" W x 6.7" H, ensuring a perfect fit in your setup while providing reliable pressure activation for optimal climate control.

## Description

Tjernlund PS1503 Pressure Activation Switch for Duct Fans in Central Heating and Air Conditioning Systems

## Features

- HVAC Controls and Thermostats
- Manufacturer: Tjernlund
- Country of Manufacturer: United States
- Package Dimensions: 6.4" L x 6.5" W x 6.7" H

## Product Details

- **Operation Mode:** automatic
- **Current Rating:** 15 Amps
- **Operating Voltage:** 277 Volts
- **Contact Type:** Normally Open
- **Connector Type:** Barbed Connector
- **Brand:** Tjernlund
- **Terminal:** Spst
- **Item dimensions L x W x H:** 6 x 6 x 6 inches
- **Circuit Type:** 1-way
- **Actuator Type:** Push Button

## Images

![Tjernlund PS1503 Pressure Activation Switch for Duct Fans in Central Heating and Air Conditioning Systems - Image 1](https://m.media-amazon.com/images/I/913ungLoI7L.jpg)
![Tjernlund PS1503 Pressure Activation Switch for Duct Fans in Central Heating and Air Conditioning Systems - Image 2](https://m.media-amazon.com/images/I/41vYyzaggOL.jpg)
![Tjernlund PS1503 Pressure Activation Switch for Duct Fans in Central Heating and Air Conditioning Systems - Image 3](https://m.media-amazon.com/images/I/41qyzPW1zYL.jpg)

## Questions & Answers

**Q: I have romex from house power in to air duct switch (mounted to plenum) then another romex out to directly to booster fan and it won't turn on. help?**
A: Remove the switch from the circuit and confirm that the booster fan powers up.   Once you can confirmed that, cut the hot wire and wire it across the terminals of the switch.   Think of this Pressure switch like your light switch.  It is Normally Open so when the pressure builds it closes and completes the circuit.

**Q: The supply air comes to the splitter box in attic. From there, it has nine of 6" flex duct. Where do i install ps1503 and what is vertical? thanks.**
A: I would install on the supply line or splitter box. I recall that vertical was not obvious. I think I placed the sensor nipple at the bottom and it is working.

**Q: I bought the model ps1503 duct airstat from amazon. it worked fine for just over 30 days. now it will not shut the fat off what do i do?**
A: If you didn’t mistype “fat” you probably should put the fan on a diet.  If you did mistype”fan” call Tjernlund they are very helpful.

**Q: Should the fan be turned off when I have the air duct cleaning company clean my ducts?**
A: I would say all fans in the ductwork should be turned off when being cleaned. It seems to me if a contractor is disturbing the dirt and dust if the fan is on it will blow the loose dust into your house. I believe they normally use a vacuum to clean ductwork.

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**Shop now:** [https://www.desertcart.com.kw/products/6733456-tjernlund-ps1503-pressure-activation-switch-for-duct-fans-in-central](https://www.desertcart.com.kw/products/6733456-tjernlund-ps1503-pressure-activation-switch-for-duct-fans-in-central)

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-02-05*