Home>Discussions>INSULATION & HVAC>How to keep central air conditioning costs down?
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KeithW
Re: How to keep central air conditioning costs down?

Well if it's heat entering through the windows, could always pick up some of the window film that blocks/reflects heat. It isn't that much and easy to install.

Put your hand on the glass, is it severely hot or do you feel a lot of heat by the window? try the film.

Timothy Miller
Re: How to keep central air conditioning costs down?

2 months no response consider moving out...

canuk
Re: How to keep central air conditioning costs down?

Being on the third floor with skylights I'm guessing this is the top floor?
Aside from the large heat gain from those skylights I would have to say your apartment is poorly insulated which is something you can't do anything about.

donnovan
Re: How to keep central air conditioning costs down?

Either you move or you just install a greener air cooling system, it will cost you more on buying the products you need but they'll help you save on long term.

Re: How to keep central air conditioning costs down?

3rd floor you're getting all the heat rising from below and your cool air is sinking to your neighbors below. Second, it sounds like you have cathedral ceilings and I'll bet any amount of money that ceiling is not properly insulated.

The most efficient cooling systems can only be efficient in a well insulated structure. Quality windows & good insulation is key to comfort and reasonable energy consumption.

Find that filter and check it monthly.

hvhehcca
Re: How to keep central air conditioning costs down?

Not going to happen unless the system is replaced. Betting that you probably have an older 10 seer or less cooling system that has leaky duct work not insulated.

Sten
Re: How to keep central air conditioning costs down?

How about returns, gotta have them and with cathedral ceilings they should be up high otherwise your just dumping cold air on hot and it will never cool properly.

motoguy128
Re: How to keep central air conditioning costs down?

1) MAKE SURE THE AIR FILTER IS CLEAN!!! Consider a lower MERV rated air filter too. the standard 1" filters with a high effeciency rating sometimes restrict airflow too much.

2) Make sure the fins on the outdoor unit are clean too, that there isn't garbage, or vegitation within 24" of the unit on at least 3 sides, ideally all 4 sides have good airflow.

3) On the hotest sunny days, does the system run constantly? If not, it's oversized. Most systems are. Better too small than too big. Long runs times reduce humidity, humidty levels are just as if not more important than temperature levels in both heating and cooling. 75F and 40% humidity is more comfortable to most people than 72F and 55% humidity.... and it's will require less energy.

4) make sure windows are sealed well. Get some adhesive foam strips if needed to seal air leaks and keep out outdoor humidty if you live in a humid climate.

dj1
Re: How to keep central air conditioning costs down?

I know, you do all the above recommendations and suggestions, and still your electric bill is as high as a kite.

Do you know why?

Utility companies raise their per unit prices, periodically and quietly. So no matter how efficient your home becomes, no matter how frugal you become - you pay more. We all pay more...

To verify this, why don't you compare your KWH usage, from month to month and from year to year. See what I mean? utilities are just like gasoline, when the price per gallon goes up, your total goes up.

Here in SoCal we have another issue: the department of water and power has become a tax collector for the city of LA, since their ability to raise taxes was limited under the famous prop 13. It's so bad now, that only about 60% of the bill is for water and electric consumption, the rest is for taxes with various names.
Disagree with this? you have an option: close your electric account...

Sten
Re: How to keep central air conditioning costs down?
dj1 wrote:

I know, you do all the above recommendations and suggestions, and still your electric bill is as high as a kite.

Do you know why?

Utility companies raise their per unit prices, periodically and quietly. So no matter how efficient your home becomes, no matter how frugal you become - you pay more. We all pay more...

To verify this, why don't you compare your KWH usage, from month to month and from year to year. See what I mean? utilities are just like gasoline, when the price per gallon goes up, your total goes up.

Here in SoCal we have another issue: the department of water and power has become a tax collector for the city of LA, since their ability to raise taxes was limited under the famous prop 13. It's so bad now, that only about 60% of the bill is for water and electric consumption, the rest is for taxes with various names.
Disagree with this? you have an option: close your electric account...

I agree with the above posts but just to add, the electric co.s charge more for peak usage, I don't know exactly what time of the day it starts but a call to you Electric Co. would let you know, if possible try to keep your usage down to a bare minimum around that time.

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