---
product_id: 38877017
title: "Original 540-Degree 45,000 BTU Tank Top Radiant Propane Heater"
brand: "mr. heater"
price: "₨129024"
currency: LKR
in_stock: true
url: https://www.desertcart.lk/products/38877017-original-540-degree-45-000-btu-tank-top-radiant-propane
store_origin: LK
region: Sri Lanka
---

# 9.5-hour runtime on 20 lb tank 540-degree multi-directional warmth 45,000 BTU max heat output Original 540-Degree 45,000 BTU Tank Top Radiant Propane Heater

**Brand:** mr. heater
**Price:** ₨129024
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay warm, stay social — heat your outdoor moments in 540° style!

## Quick Answers

- **What is this?** Original 540-Degree 45,000 BTU Tank Top Radiant Propane Heater by mr. heater
- **How much does it cost?** ₨129024 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/38877017-original-540-degree-45-000-btu-tank-top-radiant-propane)

## Best For

- mr. heater enthusiasts

## Why This Product

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

## Key Features

- • **Safety-First Design:** Tip-over shut-off switch ensures peace of mind during every use.
- • **Ultimate Portability:** Mounts directly on a standard 20 lb propane tank for easy setup anywhere.
- • **Adjustable Heat Settings:** Customize your comfort with high, medium, and low regulator options.
- • **Powerful 45,000 BTU Output:** Feel the intense heat that keeps you cozy even on the chilliest nights.
- • **Unmatched 540° Radiant Heat:** Experience full-circle warmth that blankets your outdoor space effortlessly.

## Overview

The Original 540-Degree 45,000 BTU Tank Top Radiant Propane Heater delivers powerful, adjustable heat with a unique 540-degree radiant design. It mounts directly on a 20 lb propane tank for ultimate portability, runs up to 9.5 hours on high, and includes a safety tip-over shut-off switch, making it the perfect outdoor heating solution for professionals who demand both performance and convenience.

## Description

Original 540-Degree 45,000 BTU Tank Top Radiant Propane Heater

## Features

- Multi-directional radiant propane heater mounts directly to a 20 lb tank for easy portability
- High-medium-low regulator: 45,000-36,000-30,000 BTUs
- Tip-over safety shut-off switch
- Approximate 9.5 hour run time on high with a 20 lb tank
- Outdoor use only

## Product Details

- **Brand:** Mr. Heater
- **Special Feature:** Adjustable Temperature, Adjustable Tilt Head, Noiseless, Tip-Over Protection
- **Color:** Black, Silver
- **Form Factor:** Tank Top
- **Indoor/Outdoor Usage:** Outdoor

## Images

![Original 540-Degree 45,000 BTU Tank Top Radiant Propane Heater - Image 1](https://m.media-amazon.com/images/I/61PVaCgqhRL.jpg)

## Questions & Answers

**Q: How long will a cylinder propane last period?**
A: Propane weighs about 4.2 pounds per gallon. So a 20#cylinder holds 4 1/2 to 4 3/4 gallons of propane. A gallon of propane stores about 92,000 BTUH’s, (+/-). 

So in rough figures, if the head consumes 45,000 BTUH, you can get 2 hours per gallon, (8 hours per tank) or a bit more, when using on high.  It’s just math: Med is 30,000, so 3 hours per gallon, low is 15,000, so six.

Mine seems to run longer times than that, so I assume it’s burning at a somewhat lower rate than listed.

**Q: will it heat a 3 stall garage?**
A: It will heat my 30' x 25' garage with 12' ceilings no problem, I have insulated walls but nothing for the ceiling. I have to turn it down after awhile, which the lowest setting is sometimes still too high, and I have to turn down the propane at the cylinder haha. I use it to keep the temperature at around 50 degrees when it is 20 or colder outside. But, though a bit costly, it really is a great heater...just keep it several feet away from plastic items.. I know from experience.

**Q: how much propane does this use when on high**
A: Not sure how much per minute or hour but on high for a 20lb tank it last about 8 hours

**Q: How many hours of heat on low/high from a full 20lb tank?**
A: This unit burns a lot of propane.  On high, I get about 10 hours from a 7 gallon propane tank. 
 Doing the math this burns about 1.413 hours per pound of propane.  In general, all 30,000 BTU heaters will use the same amount of propane as any other 30,000 BTU heater.  The number of BTU's produced from burning propane will be the same regardless of brand.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.lk/products/38877017-original-540-degree-45-000-btu-tank-top-radiant-propane](https://www.desertcart.lk/products/38877017-original-540-degree-45-000-btu-tank-top-radiant-propane)

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-07*