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Inverters & Monitors Quality vs. Affordability / Our Recommendation

Dear SD team:

We had several different strategies to investigate the quality vs affordability of Inverters and Monitors. The obvious ones include the brand name, whether it is UL rated, and the warranty duration. We also took into consideration whether the inverters produce true sine waves. There are two different types of inverters in use right now: True sine wave inverters and Modified Sine Wave. True sine wave inverters are the best and provide uninterrupted power supply and every type of household appliance can be run on it. The modified sine wave technology is more affordable but it may cause noise in sensitive appliances such as TV's and laptops. Therefore, we recommend overlooking the price in this feature and using True sine wave inverters which would provide greater reliability.

We also found a suggestion to look at the pulse ratings of an inverter in order to judge the quality. Simple inverters most likely come with 3-pulse ratings.

After comparing the pros/cons of using one 6,000 W inverter versus using multiple lower wattage inverters, we both agree that the single 6,000 W inverter would provide more than sufficient quality while being the most economically feasible option at the same time. We found a Xantrex Hybrid inverter-charger for ~ $3,600. This brand is trustworthy in terms of quality and this product has a 5 year warranty. This option would be more space-efficient. And the total shipping cost of one inverter is also cheaper compared to shipping costs of 2 or 3 separate ones (125Ibs vs >150lbs).
The advantage of installing multiple inverters is that if one inverter breaks, there is backup. However we are using Utility-tied inverters so the grid will serve as the backup. On top of that, our recommended inverter is a hybrid that also contains a generator. Taking all this into consideration, the safety net of multiple inverters is not enticing compared to the expense of such an option (upper range of over $1/W). The single inverter is a little over (55 cents per Watt), not including a compatible Xantrex monitor ($300).


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