Backup Power Systems – Generators, Battery Backup, UPS, and Inverters

Question

Can I run my pellet stove on a generator or backup power system?

Answer

Comfortbilt pellet stoves may be used with compatible backup power systems, including:

• Battery backup systems
• UPS (Uninterruptible Power Supply) units
• Inverters
• Portable power stations
• Generators

Important: The backup power source should provide a pure sine wave output.

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Pure Sine Wave Requirement

Use only backup systems with:

✅ Pure sine wave output

Avoid:

❌ Modified sine wave output
❌ Partial sine wave output
❌ Simulated sine wave output

Improper waveform output may:

• Interfere with stove operation
• Cause feed system issues
• Affect motor operation
• Cause startup problems
• Potentially damage sensitive electronic components

One of the most commonly reported symptoms is pellet feed problems when operating from incompatible generators or power systems.

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Recommended Power Capacity

Recommended minimum output:

1000 watts minimum

Preferred capacity:

1500 watts or greater

The additional capacity helps accommodate the higher power demand during ignition startup.

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Startup Power Demand

The ignition cycle creates the highest electrical demand.

Typical operation:

Ignition phase: Higher load during startup

Normal operation: Lower sustained load after ignition completes

Allow additional capacity for startup spikes.

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Common Compatible Backup Types

Examples include:

• Pure sine wave UPS units
• Pure sine wave inverter systems
• Battery power stations
• Inverter generators

Always verify output specifications before use.