Excerpt: We recently tested the Indoor Max 3.6 GPM propane water heater, and the results were quite revealing. Unlike electric heaters, this unit delivers instant hot water with a power output of 80,000 BTU—abeautifully efficient solution for continuous flow needs. One of the most surprising discoveries was how much we saved on energy costs. With propane, our bills dropped sharply compared to our old electric model, and the installation was relatively straightforward, thanks to its indoor-designed versatility. While it does require a propane tank, we quickly found this minor inconvenience well worth it for the consistent performance. The unit’s quiet operation added another plus, making it ideal for indoor use. Overall, we’re impressed by its balance of power, efficiency, and affordability, confirming why propane is gaining attention as a smarter heating choice.