Air Conditioner: Heat Pumps

Considerations In Purchasing The Best Air Conditioners

A cool room is blessing on a hot summer day. This can make the difference between being comfortable and uncomfortable during your vacation months. You do however need to have a good checklist in picking from the best air conditioners that are on offer to give you a cooler summer. By having this checklist hopefully it will make your decision easier to make.

Finding the right unit always starts with how it will suit or answer your budget. It should not be treated as a luxury item and neither should pay for it like it was. Many brands are very affordable nowadays due to cheaper materials, labor, and manufacturing processes.

Another thing to consider prior to your purchase is the size. This will of course depend on the area you need to be cooled. The bigger the area coverage, the bigger the unit needed. How long in terms of usage per day you intend to use your new air conditioner will also factor in. Should you expect to use it for extended periods of time, then you may be better off with a bigger sized one to ensure durability.

How the unit will be installed will be the next factor to consider. Depending on whether it is a split type or window mounted models, additional costs can differ. This is due to additional labor cost of hiring a technician or handyman should you not be able to do it yourself.

Consider also the energy rating of the unit you are buying. Most appliances have energy ratings done by an accredited international agency, which shows the energy efficiency the appliance. A higher rating will mean more cost savings on your part, and of course extra money to spend on other things.

Apart from savings and cost also think in terms of responsibility in purchasing an air conditioner. Buy one that does not use Chlorofluorocarbons that destroy the ozone layer. You should not only buy smart, you should also buy responsibly. Even though in the back of your mind it may seem a trivial thing, it actually contributes to a much greater whole.

Although on the surface it looks simple enough to buy an appliance like an air conditioner this is not always the case. Always go through the above recommended checklist so that you will make a wise purchase, and also feel a bit better for yourself at the same time. So before opening up your wallet, put on your thinking cap first.

Home a/c not cooling very good -- most likely cause?
I live in Oklahoma and last summer's heat was just brutal. My central a/c unit is 15 years old now and it is just a straight a/c & heating system without any sort of heat pump. About 3 or 4 years ago the compressor and start capacitor were replaced and about 2 years ago the fan motor on the top of the outside part of the unit (the condenser i believe it is called) was replaced. Last year when the summer heat was brutal the unit ran almost constantly to keep the house at a somewhat comfortable temperature. Sometimes the compressor would not start and i believe it was because the thermal breaker would activate. I would spray cold water on the compressor until it cooled off and started running again. My brother-in-law who by the way is not an a/c professional has the freon and gages to add freon and he checked it an added a little freon towards the end of the summer and it didn't seem to make any difference in the performance or the thermal breaker issue at all. So is the most likely problem another worn out compressor? Or has the age of the unit just caused it to lise so much efficiency that it no longer has the capacity to cool down the house adequately? It used to cool the house really well with ease and now it just seems to not be blowing cold enough air to get the job done. The heater portion still heats the house with gusto. Although i'm sure that is irrelevant. Well maybe not totally irrelevant as it indicates the attic part of the unit is still blowing hard enough and that the vent system and duct work are not the culprit. So hopefully it is something simple and not another compressor motor as that was an expensive repair. Please help if you can, i can't really afford an expensive repair right now as money is super tight. I checked the hot liquid line and the cold suction line and the hot liquid line is not very hot at all as a matter of fact i would classify it more as warm than hot and the cold line is not freezing cold only cool to the touch. It is only 85 degrees outside today and the a/c has been running non-stop since Mid-morning and the inside temperature is only 73.6 degrees. Once upon a time not that long ago the a/c would only run for a short time and it would easily pull the inside temperature down to 68 degrees even when outside temps were in the 100s. I'm not the best at keeping my indoor filters changed but i don't think i ever seriously neglected changing them. The inside coil in the attic did freeze up about 5 years ago but the technician didn't tell me exactly why or if he did i certainly don't remember. Is it possible that the inside coil is dirty and the condenser unit and compressor are working as they should? Also the outside coil doesn't look dirty and i washed it a bunch last summer when the heat was unbearable because the cold well water seemed to always pull the temperature inside down by about 2 degrees. Can the condenser coil be dirty without looking dirty? The last time the a/c man was out he was trying (although not aggressively) to get me to replace my entire system. I know a heating & cooling systems don't last forever but is 15 years the life expectancy of a system these days? Or should i contact a different company to come out the next time i have my system serviced? Thank you guys for all the informative answers so far you are truly professionals.

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In a heat pump system, what is one method of finding the time required to reach a desired home temperature?
What are some formulas to calculate this assuming that T_2 is the only unknown?

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Single stage or 2 stage furnace?
I live in OHio and should I get a heat pump, single 96% or 95% 2 stage furnace. I have different prices and brands from different companies. I am also adding central air to the home. What is some of the better brands. I have also different warranties.

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Why is a heat pump so cost effective?
Yes Allen but wouldn't it be just as costly to decrease entropy than to use a heater?

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