TB MAX Diesel Heater Toolbox, 7.5L CO Alarm Last Up to 62.5 hrs

The install was straightforward, and I like that the housing feels weatherproof. The noise is minimal, just a low hum, way quieter than my last diesel heater. Only downside so far is the unit is a bit heavier than I expected at almost 29 lbs. But once it's set, it's rock solid.

I tested for the new TB MAX and took it on a 4-day road trip in my 24ft Class C RV. The heater handled it like a champ.

Installation was straightforward. The included diagrams and harness made sense once I laid everything out. Took me about 20 minutes start to finish, and I mounted the control panel inside using the 5ft extension cord. The unit itself is heavy (almost 29 lbs), but it feels very solid and well-built.

The heater kept the RV steady around 70-72°F. I tested the run time, and the 7.5L diesel tank lasted me just about 60 hours total, which matches Hcalory's claim. I didn't have to worry about refilling mid-trip, which is a big deal compared to smaller heaters I've used.

The upgraded 90mm duct does help. There's a gentle whoosh sound, but no annoying rattle. The fuel pump does tick, but it's faint and blends into the background after a few minutes.

The remote CO alarm is a nice addition. I tested it by placing it near my garage while running the heater indoors for a few hours. The alarm went off exactly as it should. For me, that's peace of mind with the kids sleeping in the RV.

Overall: This is the first diesel heater I've used that I trust for longer, off-grid trips. It runs efficiently, quietly, and safely. If you do a lot of RV travel, the large tank alone makes it worth it.

Got to test the TB MAX this month, and I'm impressed. I used it during a rainy weekend campout, and the sealed housing really held up. The remote with the CO alarm is a great safety feature, and I tested the alarm just to be sure it works. Ran it about 9 hours straight one night, fuel consumption was very low. For anyone who wants long-lasting heat without babysitting the tank, this heater nails it.

As part of the Hcalory testing program, I used the TB MAX in my 12x18 ft off-grid cabin in Wyoming.

Setup & Build: The weather-resistant housing really stood out to me. It rained for half a day, and I had the heater running outside with ducting into the cabin no issues with moisture, no sputtering. The aluminum body feels sturdy and built for rugged use.

Altitude Mode: Took it up to 9,200 ft on a camping trip. The auto altitude adjustment worked perfectly. I didn't have to tweak anything, and it kept a 6x12 trailer at 75°F all night.

Noise & Comfort: It's quieter than expected. You hear the hum and pump ticking, but not enough to keep me awake. Honestly, the silence in the mountains was louder than the heater.

Downside: The app paired fine with my Android, but my buddy struggled a bit with iOS at first. Once connected, though, it works reliably.

Final Thoughts: If you're looking for something for cabins or mountain camping, this is a serious upgrade from smaller 5L heaters. Long runtime and altitude adjustment make it worth it.

Hcalory provided me with the TB MAX for testing, and I've been running it in my two-car garage (about 250 sq ft) here in Oregon. Early mornings are already in the 50s, so it's a great time to test.

Took me about an hour. I like that it comes with both AC and DC options. For the garage, I just used the AC adapter - it's plug-and-play and way easier than tapping into vehicle power.

Performance: On startup, it takes about 3 minutes to blow noticeable heat, and within 10 minutes, my garage went from 54F to 68F. That's impressive.

Noise: Much quieter than my old diesel heater. Just a steady airflow sound, no rattling or excessive pump clicks. I could listen to music and talk on the phone without raising my voice.

The CO alarm feature on the wireless remote is a huge plus for me since I'm running it indoors. I tested it and it indeed triggered the alarm, and the system shut down as designed.

For garage use, this is perfect. Efficient, safe, and reliable. I honestly didn't expect to like it as much as I do - it's going to be my winter workshop heater for sure.