How do you calculate CPAP energy costs?
How do you calculate CPAP energy costs?
I'm trying to calculate how much of my energy bill is due to my resmed. It's plugged in all the time. Is there a formula folks use?
Re: How do you calculate CPAP energy costs?
Get yourself a kill-a-watt device and measure it for a week. Multiply by 52. Should get you a decent estimate for annual electrical consumption. Then you can move on to your refrigerator. Your TV. Etc etc. https://www.amazon.com/P3-P4400-Electri ... 84471&th=1
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chunkyfrog
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Re: How do you calculate CPAP energy costs?
The fridge is the kicker.
An old one will eat you out of house and home.
If your icebox is over 10 years old, it is more brown than green.
An old one will eat you out of house and home.
If your icebox is over 10 years old, it is more brown than green.
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Last edited by chunkyfrog on Wed Sep 06, 2023 7:56 pm, edited 1 time in total.
Re: How do you calculate CPAP energy costs?
why?
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chunkyfrog
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Re: How do you calculate CPAP energy costs?
Make somebody else pay for it?
Dream on.
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Re: How do you calculate CPAP energy costs?
Aside from "why not", estimating needs for a back-up power source would be a good reason I suppose.
_________________
| Machine: ResMed AirSense™ 10 AutoSet™ CPAP Machine with HumidAir™ Heated Humidifier |
| Mask: Oracle HC452 Oral CPAP Mask |
Re: How do you calculate CPAP energy costs?
speculation. won't know until op tells me.
_________________
| Machine: AirCurve™ 10 VAuto BiLevel Machine with HumidAir™ Heated Humidifier |
| Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
"We don't stop playing because we grow old; we grow old because we stop playing."-
George Bernard Shaw
George Bernard Shaw
Re: How do you calculate CPAP energy costs?
about a hundred watt hours per night.
Get OSCAR
Accounts to put on the foe list: dataq1, clownbell, gearchange, lynninnj, mper!?, DreamDiver, Geer1, almostadoctor, sleepgeek, ajack, stom, mogy, D.H., They often post misleading, timewasting stuff.
Accounts to put on the foe list: dataq1, clownbell, gearchange, lynninnj, mper!?, DreamDiver, Geer1, almostadoctor, sleepgeek, ajack, stom, mogy, D.H., They often post misleading, timewasting stuff.
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ChicagoGranny
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Re: How do you calculate CPAP energy costs?
hmm that’s pretty good, seeing it like that.ChicagoGranny wrote: ↑Thu Sep 07, 2023 10:47 am= 36.5 kw/year x $0.1283/kwh = $4.69 per year or $4.71 per leap year
I think there will be slight regional differences but negligible
kwh here is closer to 13.5 cents
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Re: How do you calculate CPAP energy costs?
Let's take a simple example. A CPAP machine typically consumes 30 to 60 watts without a heated humidifier. Let's assume it's consuming 50 watts. And it's running 8 hours a day for a year. So total power consumtion is 8*50*365/1000kw=146kw
Now lets assume avg kwh unit rate is 25 cents so electric bill will be 0.25*146= $36.5
Now lets assume avg kwh unit rate is 25 cents so electric bill will be 0.25*146= $36.5
Re: How do you calculate CPAP energy costs?
Compared to your refrigerator, your air-conditioner, your computers, your heating (if it's electric), your stove/oven (if they're electric), your washing machine & dryer, and your dishwasher, it's minuscule.
Also, what is the use of knowing this?
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chunkyfrog
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Re: How do you calculate CPAP energy costs?
You err because the device only draws as much current as needed--as it is needed.davwtalk wrote: ↑Fri Sep 08, 2023 2:31 amLet's take a simple example. A CPAP machine typically consumes 30 to 60 watts without a heated humidifier. Let's assume it's consuming 50 watts. And it's running 8 hours a day for a year. So total power consumtion is 8*50*365/1000kw=146kw
Now lets assume avg kwh unit rate is 25 cents so electric bill will be 0.25*146= $36.5
Devices are rated for maximum current--useless for calculations.
Measurement is the only way to get an accurate number.
Even a clock draws uneven current, due to internal friction.
Get a Kill-a-Watt. It's worth it--and loads of fun.
_________________
| Mask: AirFit™ P10 For Her Nasal Pillow CPAP Mask with Headgear |
| Additional Comments: Airsense 10 Autoset for Her |
Re: How do you calculate CPAP energy costs?
@chunkyfrog @emenite Thanks, folks.
Yes, I agree that measurement beats estimation, until measurement costs more than I'd likely save (in this case).
These back of the napkin calculations come to about $5 a month at my local energy rates. But you're right, this is probably high since it peaks for the hours I'm asleep.
Why did I ask? I was trying to decide if it was worth trying for a partial subsidy for operational costs.
Yes, I agree that measurement beats estimation, until measurement costs more than I'd likely save (in this case).
These back of the napkin calculations come to about $5 a month at my local energy rates. But you're right, this is probably high since it peaks for the hours I'm asleep.
Why did I ask? I was trying to decide if it was worth trying for a partial subsidy for operational costs.
Re: How do you calculate CPAP energy costs?
oh! i simply hadn't thought of that.
_________________
| Machine: AirCurve™ 10 VAuto BiLevel Machine with HumidAir™ Heated Humidifier |
| Mask: AirFit™ P10 Nasal Pillow CPAP Mask with Headgear |
"We don't stop playing because we grow old; we grow old because we stop playing."-
George Bernard Shaw
George Bernard Shaw