Cost of A/C

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Cost of A/C

Postby Jitters » Thu Oct 18, 2018 9:04 am

How much would it cost to leave one unit running 24/7 for one month?
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Re: Cost of A/C

Postby epidemiks » Thu Oct 18, 2018 9:33 am

Depends on the power consumption of the A/C unit and the amount of work you'll be asking of it.

Check the sticker on the side of the unit for the power consumption:

Image

and then put that number in a consumption calculator (https://www.rapidtables.com/calc/electr ... lator.html) to see kWh usage at maximum workload, then multiply that by your rate/kWh.

eg. a 2000W unit will use a maximum of ~1440kWh in a month. At 1,000r/kWh that's around 1.4m riel, or $360/m.
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Re: Cost of A/C

Postby Jitters » Thu Oct 18, 2018 9:37 am

Wow, thanks for the great (informative) answer.

Thanks fucking pricey, isn’t it? Damn.
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Re: Cost of A/C

Postby 1984 » Thu Oct 18, 2018 9:46 am

That's at absolute maximum power, full-time. Actual usage (in a closed room that isn't having hot air continuously entered) would probably be 10 - 20% of that.
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Re: Cost of A/C

Postby epidemiks » Thu Oct 18, 2018 11:22 am

Exactly, that's assuming the compressor is working at 100% load, 24hrs a day, which is highly unlikely.
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Re: Cost of A/C

Postby LaudJohn » Thu Oct 18, 2018 8:09 pm

I leave mine running 24/7 in PP when I am there, set at 25 degrees. It uses 9kw per day.. I pay around 700 Riel per kw so under $60 per month. Room is around 26sqm.
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Re: Cost of A/C

Postby LexusSchmexus » Thu Oct 18, 2018 9:23 pm

Ouch... I'm guessing mine costs around $60 for only ~12-20h/day (say average 18h/day). Room is maybe 30-33sqm. Maybe I should get it serviced soon.
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Re: Cost of A/C

Postby JimSocks » Thu Oct 18, 2018 11:42 pm

depends. i owned an apartment once where the owner was screwing around with the meter. the electricity was higher than my rent (back then i found a 2-bedroom unfurnished for only $150 near tuol sleng, i thought it was a good deal), and i only had the ac on at night when i was home to help me sleep. i left after the second month.
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Re: Cost of A/C

Postby offshoresports » Fri Oct 19, 2018 2:14 am

Normally I paid $200-$300/month in electricity cost. I ran the AC from 11 am till 7 am the next morning. $60 would have been amazing! I believe the cost was .25/kw
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Re: Cost of A/C

Postby v12 » Mon Oct 22, 2018 3:18 am

My last (brand new) apartment was $50 for a month (at $0.30), including 24/7 fridge and airco around 16 hours a day at 28 Degrees Celsius. Pretty good isolated, apartment left/behind/below/above, etc.

My previous (Khmer style) apartment in a town house was under a hot flat roof and did over $100 a month for electric.

The whole town house did around $150 (at KHR 720, bit depending time of the year), with fridge and 2-3 aircos at night.

Proper heat isolation and a high efficiency airco is the clue of saving on electric.
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Re: Cost of A/C

Postby 1984 » Mon Oct 22, 2018 11:55 am

Yup, running an older a/c in the bedroom for probably 10 hours a night. Two large ceiling fans on all day, fridge/freezer, big TV, washing machine gets used a lot, PC on all the time - comes out at about $110 per month. Paying directly to EDC. Goes lower when we get cooler weather around December and January. I think a new a/c would take a good chunk out of that.
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Re: Cost of A/C

Postby scoffer » Mon Oct 22, 2018 1:51 pm

Looking for suggestions.
If one was constructing a new building and wanted to reduce external heat transfer what would you suggest?
The cheap Khmer style of single brick + concrete rendered wall just absorbs heat and transfers heat into the house.
Lets just build an oven and live in it.

How would you insulate a new building, or retrofit an old building to reduce external heat transfer.
I refuse to go out with nothing more than a whimper followed by a small farting sound and a shit stain on my bed sheets..
Just thought I'd share that with you.
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Re: Cost of A/C

Postby 1984 » Mon Oct 22, 2018 3:23 pm

I'm not in the construction industry but two brick walls with an air gap would help. In the UK (where you're trying to keep a place warm) you'd put foam in the gap for further insulation but here if you might want to have air moving in order to take the heat out (presuming you could do that without letting water in).
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Re: Cost of A/C

Postby 1984 » Mon Oct 22, 2018 3:23 pm

I'm not in the construction industry but two brick walls with an air gap would help. In the UK (where you're trying to keep a place warm) you'd put foam in the gap for further insulation but here if you might want to have air moving in order to take the heat out (presuming you could do that without letting water in).
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