Then you also need to consider any auxiliary equipment on your power inverter. Things like fans, controllers, and baffles. These may use more power that needs to be accounted for. Once we are confident on our loads, we can look for a power inverter that can provide power to your furnace. Just as a reference point, many furnaces require at least a 400 watt power inverter.

You will then need to create a battery bank for the power inverter to run from. It should be large enough to never drain the batteries more than 50% before recharging. This will extend the life of your batteries and also reduce charge times. It would be best to use a smart battery charger that will keep your battery bank at optimum charge.

Never use Deep Cycle Marine batteries indoors, they can produce hydrogen gas which is explosive. Only AGM batteries can be safe for indoor use.

Once we have the battery bank setup, it is time to figure on how we will connect the system. If the system is meant to provide back up power in the event of a power outage. We will need to use a transfer switch to directly power the furnace. The furnace should be plugged into the Backup port on the Transfer Switch. The shore power should plug into the wall outlet. The backup power supply should plug into the inverter.

1750 Watt Power Inverter

This is usually best accomplished by a licensed electrician. Many areas may require that an electrician hooks up any backup power inverters. Check you local codes.

You will also need to provide a battery charger for your battery bank. This charger can be plugged into the wall since once power is lost it will not continue to charge the system. When power returns the charger will come online and charge the batteries again.

In cabin or other remote applications you can use a similar setup. If the power inverter is only power source you can hook the furnace directly to the inverter and provide batteries to the inverter. You will need to recharge the batteries using an inverter or generator.