Calculators
Quick tools to help you size your system, plan power requirements, and choose the right setup.
BTU Sizing Calculator
Estimate the recommended BTU capacity for your cabin based on your setup and conditions.
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Inverter/DC Battery Runtime Calculator
Estimate runtime based on battery capacity, inverter setup, and unit power draw.
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Generator Sizing Calculator
Find a recommended generator size based on your unit model and starting demand.
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Search by keyword or filter by topic to quickly find answers about sizing, power, installation, and compatibility.
How do I choose the right BTU size for my boat?
Use our BTU Sizing Calculator to estimate the recommended capacity for your cabin. For best results, consider cabin volume, insulation, glass area, climate, and how the space is used.
Do I need a flow switch if my unit already has high-pressure protection?
A flow switch is optional added protection that can shut the system down quickly if water flow is lost. It’s commonly used as an extra safeguard for the pump and water circuit.
Can I run my air conditioner on batteries or DC power?
It depends on your unit model, inverter capacity, battery bank size, and desired runtime. Use our Battery Runtime and Inverter tools to estimate requirements based on your setup.