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Electricity savings: 13 seer vs 14 seer?

Mitch_4
Mitch_4 Member Posts: 955
in THE MAIN WALL
(BTU rating / SEER) x (cost per Kw /1000) x hours of operation. = annual operating cost.

Comments

  • Saggs
    Saggs Member Posts: 174


    Anyone have stats or a chart that would show the energy savings of running a 14 or 15 seer ac unit vs a 13 seer job, all other things being equal? System is a 3 ton split.
  • Ken Field
    Ken Field Member Posts: 123
    You need more info

    before you can calculate savings. We use 1100 hours of run time in my area to calculate cost of operation. It is difficult to sell higher efficiency AC by savings. The difference between 13 & 15 seer in my area is about $20/year. Not much of a selling point. But electricity is slated for deregulation in PA in 2010. If rates increase from 8.5 cents/kwh to 12+ cents/kwh, savings go up too.

    Ken

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  • Tony_23
    Tony_23 Member Posts: 1,033
    SEER calcs

    A 10 SEER gets 10 btus/watt, 12 SEER = 12 btus/ watt, 14 SEER= 14 btus /watt. Carry the numbers out by a thousand and you get the btus/kw. Find the average AC run time/season for your locale and you'll get the btus /season and also the kwh used, multiply by the $/kwh and voila!, cost per season.
  • Saggs
    Saggs Member Posts: 174


    That is great! Much thx. I live in VT, havent had much a/c season this summer so far. Where would I find the a/c run times for my geographic area? Our elec. rate is 13cents/kw.
  • Eugene_Silberstein
    Eugene_Silberstein Member Posts: 349
    On Average

    On average, a one-point increase in SEER will result in a savings of approximately 10%.

    So, a 13 SEER system should produce, on average, a 30% savings in energy consumption.

    There was an error rendering this rich post.

  • MIke_Jonas
    MIke_Jonas Member Posts: 209
    Compare Warranty

    Sometimes the higher seer units have a better warranty that is included in the price. Sometimes it's just a longer parts warranty, sometimes it may include labor as well as parts. The lower seer units don't always have the top of the line extended warranty program, you have to buy it seperate.

    I always recommend to check on the next one or two higher seer units, just to compare warranty. For instance, a 16 seer unit might cost about the same as a 13 seer unit, if you figure in exteneded warranty programs. And you get the life long higher efficiency to boot. Just make sure it's a warranty through the manufacturer, that will apply no matter who works on the unit, as long as it's an authorized dealer.
  • Saggs
    Saggs Member Posts: 174


    It looks like we have about 400 cooling degree days where I live. How do I convert this to kw of elec. used or hours of cooling needed so I can calculate run times? I will also look into the warranty issue. Thx
  • Jim Bergmann
    Jim Bergmann Member Posts: 24
    Savings calculator

    Here is exactly what you need. There are more where that came from.
  • Jim Bergmann
    Jim Bergmann Member Posts: 24
    Savings calculator

    Here is exactly what you need. There are more where that came from.
    http://www.google.com/search?sourceid=navclient&ie=UTF-8&rlz=1T4GGIH_enUS248US248&q=air+conditioning+savings+calculator
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