Took this front-end scan after a short drive. The radiator/grille area makes sense, but the uneven warmth across the bumper caught my eye.
For those who use thermal on vehicles, do you usually read this as normal heat soak and airflow, or would you compare both sides more closely for anything off?
So I installed Delta Pro Ultra about 6 months ago for my California home. Here's what you're actually getting.
I live in a 2000 sqft house, family of 4. We get power shutoffs a few times a year during fire season, usually lasting 2-3 days. Was tired of hotel stays and spoiled food.
What I compared before buying
I looked at the Delta Pro Ultra, Tesla Powerwall 3, and Bluetti EP900. DPU stood out for the modular expandability and the fact that I could start smaller and add batteries later without buying another inverter.
Real usage during outage
Power went out Friday 4pm. Ran central AC strategically (few hours evening/morning), fridge 24/7, WiFi, laptops, lights, TV, coffee maker.
6kWh lasted about 18 hours with conservative use. I don't have solar yet so I had to shut down non-essentials to make it stretch. Planning to add portable solar panels next.
What impressed me
The modular design lets me add up to 4 more batteries to this inverter without buying another unit
0ms Online UPS keeps my home office equipment running seamlessly through switchovers
Setup was straightforward, got it running same day
What I don't love
6kWh base feels small for multi-day outages - already planning second battery
Smart Home Panel 2 is extra cost but manual switchover gets tedious
Worth it?
YES if you:
Lose power 24+ hours regularly
Plan to add solar panels (essential for multi-day use)
Need 240V loads
Need seamless UPS for home office
NO if:
Outages are typically under 12 hours
Don't plan to expand capacity
My verdict
Most expandable backup I've found. Start with 6kWh and add batteries as needed, unlike fixed systems.
For California PSPS situations, hits a sweet spot: more capable than portable generators, actually scalable.
Rating: 7/10 for home backup planning to add solar, 5/10 without expansion plans