Do you want a large-capacity diesel heater, but are frustrated by trying to fit a bulky heater into a tight space? The new Hcalory TB Max solves that problem with its generous 7.5L fuel tank, yet surprisingly compact 52 × 35 × 48 cm build. Designed with the latest heating technology, it is one of the most advanced hcalory 8kw diesel air heater all-in-one models available today. So, what makes the TB Max stand out in 2025? Let’s find out.
Table of Contents
What Makes the Hcalory TB-Max Special?
Take a Quick Look
- Compact Yet Powerful: Despite a 7.5L fuel tank, the 52 × 35 × 48 cm design fits tight spaces while delivering strong heat.
- Powerful & Efficient Heating: 8KW High Output, low fuel consumption (0.12–0.36L/h)
- Flexible Power: Works on 12V/24V DC for vehicles and 100–240V AC for home or garage use, with a plug-and-use AC adapter included.
- Smart & Flexible Control: Bluetooth App (hcalory diesel heater app), wireless remote, or LCD panel with programmable timers.
- Safe & Durable Build: Stainless steel construction for durability, built-in CO alarm, and overheat protection for peace of mind.

Compact Body with Large Fuel Capacity
Do you ever struggle to fit a heater into a small space? The TB Max balances large fuel capacity with a compact frame. Despite a 7.5L fuel tank, the 52 × 35 × 48 cm design fits tight spaces while delivering strong heat. Its stainless steel and metal construction ensures long-term durability, so you don’t have to worry about wear and tear during extended outdoor use.
Powerful Heating Performance
Don’t you hate waking up shivering on a cold night because your heater couldn’t keep up? With the Hcalory TB Max, that’s a problem of the past. Its 8kW high output delivers fast, powerful heating that fills an RV, truck cabin, or tent in minutes. Even more impressive, it’s designed for extreme cold starts down to -40°C (-40°F), so it fires up reliably no matter how harsh the conditions get.
High efficiency helps you save more diesel. With 0.12–0.36 L/h diesel consumption, it provides long heating sessions without frequent refueling. Hcalory TB Max gets more heating hours from the same amount of diesel compared to standard heaters.
Flexible Voltage for Car & House
Wish your heater could keep you warm both on the road and at home? The TB Max does exactly that. It supports 12V and 24V DC systems for vehicles and comes with an AC adapter (100–240V) for home or garage use. This versatility makes it a reliable heater for long trips or a backup heater during power outages.

Smart Controls for Convenience
Adjusting your heater shouldn’t mean stepping out into the cold. The TB Max provides effortless control with three options:
- Bluetooth App (hcalory diesel heater app): Adjust settings right from your phone.
- Wireless Remote: This remote is equipped with a temperature sensor and a CO alarm for added safety.
- LCD Control Panel: Set a heating schedule with programmable timers.
These options give you complete control, whether you’re sitting in your RV bed or relaxing in a tent.
Safety and Durability
Worried about running a heater overnight? Hcalory TB Max keeps you protected at all times. It features a built-in CO alarm that alerts you if carbon monoxide reaches unsafe levels. At critical thresholds, the heater automatically shuts down. Combined with overheat protection and CE certification, the TB Max ensures safe, reliable, and durable operation wherever you use it.

Hcalory TB Max Diesel Air Heater Specifications
Let’s take a quick recap of the core specifications.
| Specification | Details |
|---|---|
| Power Output | 8kW |
| Voltage | 12V / 24V DC, 100–240V AC |
| Fuel Type | Diesel |
| Fuel Tank Capacity | 7.5L (built-in) |
| Dimensions | 52 × 35 × 48 cm |
| Fuel Consumption | 0.12–0.36 L/h |
| Operating Temperature | -40℃ to 40℃ (-40℉ to 104℉) |
| Controls | App / Remote Controller / LCD Panel |
| CO Alarm | √ |
| Smart Altitude Adaptation | √ |
| CE Certified | √ |
Pros & Cons
Pros
- Strong 8kW output for fast heating in large spaces.
- Extreme cold start capability (-40°C).
- Low fuel consumption with a long runtime.
- Triple control options: App, remote, and panel.
- Automatic altitude compensation for mountain use.
- Built-in CO alarm and overheat protection.
- Multi-voltage support for both vehicles and home use.
Cons
- Higher price compared to standard portable heaters
It combines powerful heating, intelligent controls, fuel efficiency, and advanced safety, making it one of the most reliable all-in-one diesel air heaters available today. If you’ve been looking for a heater that works anywhere—from your truck on the road to your garage at home—the Hcalory TB Max is the answer.




