CPAP Power Costs

 

What is the power consumption and cost to run a BMC CPAP Machine?

BMC CPAP Machine Without Heated Humidifier With Heated Humidifier
Mode Watts Cents/day Watts Cents/day
Standby 2.5 1.0 2.9 1.2
4cmH20 6.1 1.2 39.5 7.9
10cmH20 10.3 2.1 42.4 8.5
20cmH20 18.6 3.7 49.9 10.0

Assumptions

Standby Mode: 16 hours per day, Usage: 8 hours per day. Electricity Cost: $0.25/kwh

If you need to use a heated hose (optional extra), the extra power cost will be around 4.5c per day.

 

What DC to AC inverter should I use for Camping?

The power consumption of the BMC CPAP/APAP machine is VERY LOW (typically under 50W). We recommend using an inverter of at least 150W (CPAP operation without Huimidifier) or a 300W invertor when using a CPAP Machine with humidifier.

This will allow the inverter to run without nearing it's maximum rated capacity. Running the machine without the heated humidifier will save power.

The cheaper type of 'modified sinewave' is OK (no need to spend extra on a pure sinewave inverter)

As an example, at the time of writing;

  • A 400W 12VDC to 230VAC 'modified sinewave' inverter costs less than $100 from Jaycar Electronics

https://www.jaycar.com.au/400w-1200w-12vdc-to-230vac-modified-sinewave-inverter-with-usb/p/MI5134

You can also purchase similar products from Boating Camping Fishing (BCF), Supercheap Auto or Repco.

 

What is the power consumption and cost to run a Transcend CPAP Machine?

Transcend CPAP Machine Without Heated Humidifier With Heated Humidifier
Mode Watts Cents/day Watts Cents/day
Standby 1.2 0.5 3.1 1.2
4cmH20 1.8 0.4 10.0 2.0
10cmH20 3.3 0.7 18.5 3.7
20cmH20 6.3 1.3 36.2 7.2

Assumptions

Standby Mode: 16 hours per day, Usage: 8 hours per day. Electricity Cost: $0.25/kwh

 

Last updated 19th December 2017

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