240V Inverters

240V Solar Inverters: 48V Split-Phase Hybrid and Off-Grid Inverters for Whole-Home Power

A solar inverter with 240V split-phase output is what lets a battery bank run the loads a 120V unit cannot: a well pump, an electric range, a dryer, a central AC or a 240V shop tool. Every inverter here takes DC from a 48V lithium bank and from solar strings, and puts out 120/240V just like the utility does. Some tie to the grid and sell back or pass grid power through; some are off-grid only; several do both and add a generator input.

This collection holds 7 inverters from Sungold Power, EG4 and APEX, priced from $1,490 for a 6,500W off-grid hybrid to $3,600 for the 21kW-input EG4 FlexBOSS21. Continuous output ranges from 6,500W to 13,000W, with PV input up to 21,000W.

How to choose a 240V inverter

• Grid-tied, off-grid or both. The EG4 FlexBOSS18 and EG4 12kPV work grid-tied or fully off-grid. The Sungold Power FR12K-B 12kW Off-Grid Inverter is off-grid only. The Sungold Power SGS-12K18MAX 12kW Hybrid is UL1741 SB listed for grid interconnection with 200A whole-home pass-through. A 240v grid tie inverter is the right pick when you stay connected; an off-grid unit is enough for a cabin with no service.
• Continuous watts. Add up what runs at once. The APEX-6.5K covers a cabin with a pump and a fridge; the APEX-10K 10,000W and the 12kW Sungold units carry a full house; the FlexBOSS18 runs 13,000W and the FlexBOSS21 12,000W, rising to 16,000W with solar assisting.
• PV input and MPPT count. The FR12K-B takes 13.2kW across dual MPPTs; the SGS-12K18MAX takes 18kW; the FlexBOSS18 takes 18kW across two trackers and four strings; the FlexBOSS21 takes 21kW across three MPPTs. More trackers let you split an array over different roof faces.
• Parallel growth. The FR12K-B parallels up to six units for 72kW. If you might add a shop or a second building later, that matters more than the starting size.
• Enclosure and connectivity. The SGS-12K18MAX is IP65; the EG4 12kPV is NEMA 4X all-weather. The FlexBOSS18 connects over Wi-Fi or built-in 4G, useful where a cabin has no internet.

Popular picks in this collection

Setup and usage tips

• Size the inverter from your peak simultaneous load, then size the battery and panels behind it with the Solar Kit Calculator, which uses your appliances and ZIP code.
• Match the battery. Every unit here is a 48v to 240v inverter; it needs a 48V lithium bank, not a 12V or 24V one.
• Check rapid shutdown. The FR12K-B includes built-in PV rapid shutdown and circuit breakers, which many inspectors require for rooftop arrays.
• Plan the generator input if you are off-grid. The APEX-6.5K has dual AC inputs for grid and generator; the APEX-10K is built for solar day-to-day with a generator or grid as backup.
• Use a licensed electrician for the 240V panel work and any utility interconnection. A hybrid inverter solar system still has to pass inspection.

Frequently asked questions

Do I need a 240V inverter if I only have 120V appliances? If you want a whole-home transfer where both legs of the panel stay live, yes. If you are powering a subpanel of 120V circuits only, a 120V unit is cheaper, but you lose the option to add 240V loads later.

What does a 10000 watt inverter 240v setup run? The APEX-10K carries a well pump, a fridge, lights, a washer and a window AC together, or a single large 240V load such as a dryer with everything else idle.

Is a 240v solar inverter the same as a hybrid inverter? Not always. Hybrid means it manages solar, battery and grid or generator together; the FlexBOSS, SGS-12K18MAX, 12kPV and APEX units are hybrids. The FR12K-B is an off-grid inverter/charger with solar charging but no grid export.

Every inverter ships free to the mainland US from our brand partner warehouses, usually within a few business days, with 30-day returns. Call us with your load list and we will help you pick between grid-tied and off-grid before you order.