---
product_id: 37844587
title: "US Merchant Heatilator Heatnglo Direct Vent Fireplace 27\" Thermocouple replaces Robertshaw 446-511"
brand: "fixitshop"
price: "181 kr"
currency: DKK
in_stock: true
url: https://www.desertcart.dk/products/37844587-us-merchant-heatilator-heatnglo-direct-vent-fireplace-27-thermocouple-replaces
store_origin: DK
region: Denmark
---

# 27 kW heat output Fits Robertshaw 446-511 & SIT 820 NOVA valves Direct vent fireplace compatible US Merchant Heatilator Heatnglo Direct Vent Fireplace 27" Thermocouple replaces Robertshaw 446-511

**Brand:** fixitshop
**Price:** 181 kr
**Availability:** ✅ In Stock

## Summary

> 🔥 Upgrade your fireplace game with precision and power!

## Quick Answers

- **What is this?** US Merchant Heatilator Heatnglo Direct Vent Fireplace 27" Thermocouple replaces Robertshaw 446-511 by fixitshop
- **How much does it cost?** 181 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/37844587-us-merchant-heatilator-heatnglo-direct-vent-fireplace-27-thermocouple-replaces)

## Best For

- fixitshop enthusiasts

## Why This Product

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

## Key Features

- • **Direct Vent Ready:** Optimized for direct vent fireplaces ensuring clean, safe, and effective heating.
- • **Universal Compatibility:** Seamlessly replaces Robertshaw 446-511 and fits SIT 820 NOVA gas valves with fine thread.
- • **Powerful 27 kW Heat Output:** Delivers efficient warmth to elevate your living space instantly.
- • **Durable Brushed Metal Finish:** Combines sleek aesthetics with long-lasting performance for modern interiors.
- • **Easy Wall-Mount Installation:** Designed for hassle-free setup, so you’re back to cozy comfort faster.

## Overview

The US Merchant Heatilator Heatnglo 27" Thermocouple is a high-performance replacement part designed for direct vent gas fireplaces. Compatible with Robertshaw 446-511 and some SIT 820 NOVA gas valves, it delivers 27 kW of heat output with a durable brushed metal finish. Lightweight and easy to install, this thermocouple ensures reliable ignition and efficient heating, making it an essential upgrade for maintaining your fireplace’s optimal performance.

## Description

Thermocouple for Direct Vent Fireplaces FITS Heatilator & Heat-n-Glo Replacement Thermocouple for Direct Vent Fireplaces Replaces ( replacement for) Robertshaw 446-511 Fits Robertshaw & some SIT 820 NOVA Gas Valves with fine thread. works on many fireplaces part numbers 34820 446-511 72956

## Features

- Thermocouple for Direct Vent Fireplaces
- Replaces ( replacement for) Robertshaw 446-511
- Fits Robertshaw & some SIT 820 NOVA Gas Valves with fine thread.
- works on many fireplaces
- part numbers 34820 446-511 72956

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Fixitshop |
| Power Source | Gas Powered |
| Material | Metal |
| Finish Type | Brushed |
| Installation Type | Wall Mount |
| Heat Output | 27 Kilowatts |
| Style | Classic |
| Color | Copper |
| Ventilation Type | Direct Vent |
| Model Name | 27" Thermocouple |
| Shape | Rectangular |
| Warranty Type | Limited |
| Burner type | gas |
| UPC | 045445923903 |
| Manufacturer | Fixitshop Corp. |
| Part Number | 446-511 |
| Item Weight | 1.44 ounces |
| Package Dimensions | 5.35 x 3.98 x 0.51 inches |
| Item model number | 446-511 |
| Is Discontinued By Manufacturer | No |
| Finish | Brushed |
| Item Package Quantity | 1 |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** Fixitshop
- **Power Source:** Gas Powered
- **Material:** Metal
- **Finish Type:** Brushed
- **Installation Type:** Wall Mount
- **Heat Output:** 27 Kilowatts
- **Style:** Classic
- **Color:** Copper
- **Ventilation Type:** Direct Vent
- **Model Name:** 27" Thermocouple

## Images

![US Merchant Heatilator Heatnglo Direct Vent Fireplace 27" Thermocouple replaces Robertshaw 446-511 - Image 1](https://m.media-amazon.com/images/I/41Jo6Eg7ANL.jpg)

## Questions & Answers

**Q: Does this fit the heat n glo fireplace model sl-750tv-d?**
A: if your fireplace serial# is before 0021076242 ... then this will definitely fit. if your serial# is after ... then this will probably work just fine

**Q: Will this fit a vanguard model gvc50na?**
A: I have no idea, but my guess is - probably not.  Your best bet is to dig out your owner's manual or go to the Vanguard website - and look-up the part/part # thermocouple for your fireplace, and then cross-reference that to the Amazon website.  Good luck.

**Q: Will this fit empire dvvk-3-fv innsbrook direct vent lp gas fireplace insert?**
A: Without doing any research . . . I'm almost certain the answer is no.  I've found that the interchangeability of these thermocouples is almost non-existent.  Your best bet is to check your owner's manual for the part number (in the very back) and then cross-reference that part to Amazon or a similar after market supply source.

**Q: Is this a 87D thermocouple for a Cozi furnace?**
A: The answer to this question is best received from the manufacturer.

## Frequently Bought Together

- US Merchant Heatilator Heatnglo Direct Vent Fireplace 27" Thermocouple replaces Robertshaw 446-511
- Heat N Glo Thermocouple For Heat And Glo And Hearth & Home Fire Places
- Heat & Glo Thermopile Part # 2103-512 SAME DAY SHIPPING

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**Shop now:** [https://www.desertcart.dk/products/37844587-us-merchant-heatilator-heatnglo-direct-vent-fireplace-27-thermocouple-replaces](https://www.desertcart.dk/products/37844587-us-merchant-heatilator-heatnglo-direct-vent-fireplace-27-thermocouple-replaces)

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-27*