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Justifying the cost of 15 SEER A/C
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Posted by himo (My Page) on Thu, Nov 5, 09 at 17:30
I came across the formula
[(BTU's x hours per year) / SEER] X [Cost of 1 Kwh in cents / 100000] = annual cost of operation in $
Using this in a spreadsheet, and estimating that my AC may run no more than 1000 hours per year in Chicago, a 60,000 BTU 13 SEER would cost only around $60.00 per year more to run than a 15 SEER unit. (I have a 3000 Sq Ft Home + basement).
The equipment cost difference going from a 13 SEER to a 15 SEER is around $2500 more. Therefore, assuming constant electric rates, it would take over 40 years to make back that difference.
So why the big interest in the higher efficiency unit unless you live in the southern half of the US?
Am I missing something or should I just save my $$$$ and stick with the 13 SEER units? |
Follow-Up Postings:
RE: Justifying the cost of 15 SEER A/C
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Also say why the fuss on cars? we should all drive little box cars. Sometimes we buy for comfort.
My thought has always been, why is there a line at that cheap gas station when for only a buck more per tank I can go and fill up without a crowd at the gas station that is 3 cents higher? It's just not about SEER it's also about quality and how the system is made.
Most 15 SEER systems are made with better parts.
Every brand has it's lower end models and majority of those models happen to be 13 SEER. There is also a RNC level too which should only be sold for new construction but some contractors sell those noise makers as their preferred line. I bet you have a big screen tv and computers and of course lights? I know I have all that stuff and I know all that stuff cost me more than the operation of my A/C, Remember the devils advocate,
If quality doesn't matter get the RNC unit and put it right by your bedroom window, you may not sleep much but you will save a buck. |
RE: Justifying the cost of 15 SEER A/C
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| I upgraded from a bottom of the barrel builders grade 13 seer system to a 15.5 seer quality system. The new one has hardly any blower noise in the vents and the old one was so noisy you had to turn up the tv when it was on. The new one has a lot better heating efficiency also. I was also able to get interest free financing which was another motivating factor. I am very happy with my system. |
RE: Justifying the cost of 15 SEER A/C
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It cost more to make a higher SEER unit, more material at the least. Higher cost = higher markup. They feel compelled to mark it up extra generously too, take some of your payback savings. They get theirs now, you get yours over many years.
Caveat emptor. |
RE: Justifying the cost of 15 SEER A/C
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| himo your reasoning on the surface is valid. however, look behind the cost and see what you get. many of these 13 SEER units are just a POJ. does the condenser have full coil protection? what is the db rating? does it have a sound blanket? does it have the safety devices a homeowner would want to protect the condenser when operating out of the norm? there are other features as well. It is interesting that you see many consumers go top of line in heating and btm end on condensers. IMO |
RE: Justifying the cost of 15 SEER A/C
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| And does it get the $1500 tax credit? |
RE: Justifying the cost of 15 SEER A/C
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| If you figure the tax credit and some utilities have pretty big rebates along with having actual demand defrost along with higher efficiency overall. Quieter and more efficient and a good warranty. There are many things that weigh into the decision. |
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