
Battery System Kit
Design your solar mini-split heat pump system for battery operation
Design Your Solar Heat Pump System
Get a customized solar heat pump recommendation and a list of the components required for your project
Battery System FAQ
What is battery-powered operation?
What is battery-powered operation?
Battery-powered mode provides complete off-grid operation and uninterrupted heating or cooling, even at night or during power outages. The solar heat pump is compatible with most 48 VDC battery banks, making it easy to integrate into new or existing solar energy systems.
Because the heat pump operates on a higher DC input voltage range of 70–380 VDC, a DC-to-DC booster is required to convert the 48 VDC battery voltage to the operating voltage needed by the unit. The output of the booster can then be connected directly to the DC input of the heat pump.
When does a battery-powered system make sense?
When does a battery-powered system make sense?
Battery Mode is ideal for off-grid homes, cabins, cottages, tiny homes, and applications where heating and cooling are required both day and night without utility power grid access.
Do I need solar panels?
Do I need solar panels?
Not necessarily. If you already have a battery and inverter system, the heat pump can operate from your existing setup. However, adding dedicated solar panels can help recharge the batteries and reduce overall energy consumption.
Do I need an inverter?
Do I need an inverter?
It depends on your battery system. 48V battery systems can connect directly to the heat pump using our DC Booster and don't require an inverter. The output of the booster can then be connected directly to the DC input of the heat pump. Battery systems operating at other voltages typically require an inverter.
Can I use my existing battery system?
Can I use my existing battery system?
Yes. If you already have a battery bank installed, the questionnaire will help determine whether it is compatible and what additional components may be required.
How much 48V battery capacity do I need?
How much 48V battery capacity do I need?
The required battery capacity depends on the heat pump size and the number of hours of operation you want during periods without sunlight. A minimum of 5kWh would be required. Greater autonomy requires a larger battery bank.
How many solar panels do I need?
How many solar panels do I need?
For 48V battery-based systems, we generally recommend:
- 12,000 BTU model: Minimum 2,000 W of solar panels
- 18,000 BTU model: Minimum 2,500 W of solar panels
The right solar array size depends on your location, climate, solar exposure, battery capacity, and desired level of autonomy.
If I connect the heat pump to an existing battery system that does not operate at 48 V, can I still add dedicated solar panels directly to the heat pump?
If I connect the heat pump to an existing battery system that does not operate at 48 V, can I still add dedicated solar panels directly to the heat pump?
Yes. If your battery system is not in 48V and already uses an inverter, you may also add dedicated solar panels directly to the heat pump's DC input to maximize solar utilization and reduce the load on your battery bank.
Which electrical protection equipment is required?
Which electrical protection equipment is required?
Proper electrical protection is essential for safe operation. Typical components include disconnect switches, circuit breakers, fuses, and surge protection devices (SPD) for the solar array and battery system.
DC surge protectors (SPD) and circuit breakers are essential safety components and are required to activate and maintain the 5-year limited warranty.
Do you offer installation services?
Do you offer installation services?
We do not perform installations directly, but we work with certified HVAC installers across North America. You can browse our Installer Locator page or contact us for help finding a qualified installer in your area.
Please note that installation by a certified HVAC technician is required to qualify for the 5-year limited warranty.
What’s included when using the system design tool?
What’s included when using the system design tool?
The system design tool automatically includes the core components required for your selected configuration, including the heat pump, outdoor unit mounting support, refrigerant line set, and communication cable. Depending on the configuration selected, it may also include solar cables, solar panels, rail-less roof mounting hardware, a 48 V battery and related battery cables, a DC booster, DC breaker and surge protection, a charge controller, circuit breakers, a transformer, and other accessories required for proper operation.
An installation diagram is also included to help installers understand the recommended setup and the components supplied with the system.