---
product_id: 53447346
title: "Vacuum Low Draft Negative Pressure Switch Sensor SRV7000-531 - OEM"
brand: "quadrafire"
price: "₱5974"
currency: PHP
in_stock: true
reviews_count: 8
category: "Quadrafire"
url: https://www.desertcart.ph/products/53447346-vacuum-low-draft-negative-pressure-switch-sensor-srv7000-531-oem
store_origin: PH
region: Philippines
---

# Includes Both Hoses & Spade Connectors Differential Vacuum Pressure Switch Made in USA with 90-day warranty Vacuum Low Draft Negative Pressure Switch Sensor SRV7000-531 - OEM

**Brand:** quadrafire
**Price:** ₱5974
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep your fire burning strong with precision airflow control ⚙️

## Quick Answers

- **What is this?** Vacuum Low Draft Negative Pressure Switch Sensor SRV7000-531 - OEM by quadrafire
- **How much does it cost?** ₱5974 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/53447346-vacuum-low-draft-negative-pressure-switch-sensor-srv7000-531-oem)

## Best For

- quadrafire enthusiasts

## Why This Product

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

## Key Features

- • **Universal Compatibility:** Fits a wide range of Quadra-Fire, Heatilator, and Pleasant Hearth models for versatile use
- • **Seamless OEM Replacement:** Directly replaces all previous Quadra-Fire vacuum switches for hassle-free upgrade
- • **Precision Airflow Sensing:** Monitors firebox and vent pipe airflow to ensure optimal stove performance
- • **Robust Safety Integration:** Automatically halts auger feed motor if airflow issues are detected, preventing hazards
- • **Made in the USA with Confidence:** Backed by a 90-day manufacturer warranty and no-hassle replacement guarantee

## Overview

The Quadrafire Vacuum Low Draft Negative Pressure Switch Sensor SRV7000-531 is a high-precision differential vacuum pressure switch designed to monitor airflow and restrictions within your stove’s firebox, exhaust chamber, vent pipe, and fuel hopper. Compatible with a broad range of Quadra-Fire, Heatilator, and Pleasant Hearth models, this OEM replacement part ensures safety by disabling the auger feed motor if airflow issues arise. Made in the USA and backed by a 90-day warranty, it includes both hoses and spade connectors for easy installation and reliable operation.

## Description

Quadra-Fire, Heatilator, Pleasant Hearth Vacuum Switch Fits Quadra-Fire Models: ~ 800 ~ 1000 ~ 1100I ~ Castile FS ~ Castile Insert ~ Santa Fe FS ~ Santa Fe B ~ Santa Fe Insert ~ Classic Bay 1200 FS – CB1200 ~ Classic Bay Insert – CB1200I ~ Contour ~ Original Mt Vernon – 4 Spd Control ~ Mt Vernon AE FS ~ Mt Vernon AE Insert ~ Mt. Vernon E2 FS ~ Mt. Vernon E2 Insert ~ Edge 60 Insert Fits Heatilator & Pleasant Hearth Models: ~ Eco-Choice PS35 – PH35 ~ Eco- Choice PS50 – PH50 ~ Eco-Choice CAB50 Part Numbers: ~ Part# SRV7000-531. Replaces all previous Quadra-fire vacuum switches, including SRV7000-166, 812-3430, 812-1990 and SRV7000-447 Specs: ~ Differential Vacuum Pressure Switch, Includes Both Hoses ~ Senses air flow/restriction within the firebox, exhaust chamber, vent pipe and fuel hopper on select models. ~ The vacuum switch runs in circuit with the feed system. If the vacuum switch is faulty or senses a safety issue it will not allow the auger feed motor to operate. ~ Guaranteed HHT/Quadra-Fire OEM Part ~ 90 day manufacturer warranty with our no hassle replacement guarantee ~ Made in the USA

Review: Works for Quadrafire Castile - So far so good. I have a circa 2005 Quadrafire Castile. Symptom was that after initial feed and fire ignites, second stage of auger feed does not begin, and fire goes out. Original Vacuum switch part DFS-221-271 failed in 2019. Got OEM replacement part DFS-221-347. That switch worked for five years, but same problem happened again. This new part has different form factor (round instead of square) and plastic rather than metal, so wasn’t sure if it would work, but got it installed, and unit is working again just in time for colder weather. Red wire on + and orange wire on -. Hope this info helps others troubleshooting their stove.
Review: My Vernon fix - Perfect for my Vernon quadra fire. Original.

## Features

- Quadrafire Vacuum Low Draft Negative Pressure Switch Sensor SRV7000-531
- Part# SRV7000-531. Replaces all previous Quadra-fire vacuum switches, including SRV7000-166, 812-3430, 812-1990 and SRV7000-447
- Differential Vacuum Pressure Switch, Includes Both Hoses
- Senses air flow/restriction within the firebox, exhaust chamber, vent pipe and fuel hopper on select models.
- Made in USA - 90 day manufacturer warranty with our no hassle replacement guarantee

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B076BWJQPH |
| Actuator Type | Plunger |
| Best Sellers Rank | #172,647 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #93 in Fireplace Replacement Parts |
| Brand | Quadrafire |
| Circuit Type | 1-way |
| Compatible Devices | Quadra-Fire: ~ 800 ~ 1000 ~ 1100I ~ Castile FS ~ Castile Insert ~ Santa Fe FS ~ Santa Fe B ~ Santa Fe Insert ~ Classic Bay 1200 FS – CB1200 ~ Classic Bay Insert – CB1200I ~ Contour ~ Original Mt Vernon – 4 Spd Control ~ Mt Vernon AE FS ~ Mt Vernon AE Insert ~ Mt. Vernon E2 FS ~ Mt. Vernon E2 Insert ~ Edge 60 Insert Heatilator: ~ Eco-Choice PS35 – PH35 ~ Eco- Choice PS50 – PH50 ~ Eco-Choice CAB50… |
| Connectivity Protocol | X-10 |
| Connector Type | Spade Connectors and Hose Nozel |
| Contact Material | Brass |
| Contact Type | Normally Open |
| Control Method | Remote |
| Date First Available | October 10, 2017 |
| International Protection Rating | IP00 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 5.6 ounces |
| Item model number | SRV7000-531 |
| Manufacturer | HHT |
| Number of Items | 1 |
| Number of Positions | 1 |
| Operation Mode | automatic |
| Package Dimensions | 8.75 x 6 x 1.5 inches |
| Terminal | Screw |
| UPC | 850745008102 |
| Unit Count | 1.0 Count |
| Wattage | 300 watts |

## Product Details

- **Actuator Type:** Plunger
- **Brand:** Quadrafire
- **Circuit Type:** 1-way
- **Connector Type:** Spade Connectors and Hose Nozel
- **Contact Type:** Normally Open
- **Material:** Plastic
- **Mounting Type:** vent
- **Operation Mode:** automatic
- **Switch Type:** Flow Switch, Pressure Switch
- **Terminal:** Screw

## Images

![Vacuum Low Draft Negative Pressure Switch Sensor SRV7000-531 - OEM - Image 1](https://m.media-amazon.com/images/I/617c2Zfd3iL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works for Quadrafire Castile
*by M***7 on November 12, 2025*

So far so good. I have a circa 2005 Quadrafire Castile. Symptom was that after initial feed and fire ignites, second stage of auger feed does not begin, and fire goes out. Original Vacuum switch part DFS-221-271 failed in 2019. Got OEM replacement part DFS-221-347. That switch worked for five years, but same problem happened again. This new part has different form factor (round instead of square) and plastic rather than metal, so wasn’t sure if it would work, but got it installed, and unit is working again just in time for colder weather. Red wire on + and orange wire on -. Hope this info helps others troubleshooting their stove.

### ⭐⭐⭐⭐⭐ My Vernon fix
*by J***P on December 11, 2025*

Perfect for my Vernon quadra fire. Original.

### ⭐⭐⭐⭐⭐ Quadrafire Vacuum Low Draft Negative Pressure Switch Sensor SRV7000-531 - OEM
*by D***8 on May 23, 2021*

Ordered the part and thanks to University of YouTube. Was able to install within mins. Fit like a glove and the stove is back in operation with no problems.

## Frequently Bought Together

- Quadrafire Vacuum Low Draft Negative Pressure Switch Sensor SRV7000-531 - OEM
- Quadrafire Limit Snap Disc Switch #2 - Castile, Sante fe SRV7000-268 812-0320 FC
- Quadra-Fire Replacement Manual Reset Snap Disc #3

---

## 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.ph/products/53447346-vacuum-low-draft-negative-pressure-switch-sensor-srv7000-531-oem](https://www.desertcart.ph/products/53447346-vacuum-low-draft-negative-pressure-switch-sensor-srv7000-531-oem)

---

*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-03-12*