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  1. #40
    Join Date
    Nov 2004
    Location
    SW FL
    Posts
    6,274
    FL Power & Light is WORKING VERY HARD on Smart Grid and Demand Side Management.

    + their regular Residential rate at $0.099 / kWH is 'reasonable'.
    Designer Dan
    It's Not Rocket Science, But It is SCIENCE with "Some Art". ___ ___ K EEP I T S IMPLE & S INCERE

    Define the Building Envelope and Perform a Detailed Load Calc: It's ALL About Windows and Make-up Air Requirements. Know Your Equipment Capabilities

  2. #41
    Join Date
    Aug 2012
    Location
    Florida Space Coast
    Posts
    503
    Quote Originally Posted by energy star View Post
    Dec 2010 FPL = 580 KWH
    Dec 2011 FPL = 579 KWH
    Dec 2012 FPL = 566 KWH
    Quote Originally Posted by Florida Joy View Post
    Month to month comparison won't mean much until April or May when cooling season really gets underway.
    Daily high temps in Central Florida are now upper 70's to mid-80's and the threat of "cold snaps" ended on Easter Sunday! So... it's pretty much "cooling season" from now until mid-November! I thought I'd provide an update on historical energy usage at my house as of my April 10th FPL bill.

    Bill Date Days kWH $Bill
    11/10/2012 30 794 81.05 *3-Ton Greenspeed installed 11/08/2012
    11/10/2011 29 811 84.22

    10/11/2012 29 1531 161.92 *3.5-Ton Rheem condemned 10/18/2012
    10/12/2011 29 1489 159.87

    09/12/2012 30 1680 179.09
    09/13/2011 34 2081 229.53

    08/13/2012 32 2360 257.78 *3.5-Ton Rheem leak repaired 07/31/2012
    08/10/2011 28 2064 227.74

    07/12/2012 30 1868 200.87
    07/13/2011 33 2203 244.11

    06/12/2012 33 1741 186.81
    06/10/2011 30 1749 190.64

    05/10/2012 29 1138 116.80
    05/11/2011 29 1438 153.71

    04/10/2013 29 910 92.68 *3-Ton Greenspeed (See NOTE)
    04/11/2012 30 1119 114.06
    04/12/2011 33 870 89.77

    03/12/2013 28 594 63.14 *3-Ton Greenspeed 24/7 auto heating/cooling
    03/12/2012 31 637 66.21
    03/10/2011 28 420 46.64 *Windows open for Spring, 3.5-Ton Rheem off!

    02/12/2013 32 604 63.30 *3-Ton Greenspeed 24/7 auto heating/cooling
    02/10/2012 29 551 58.15
    02/10/2011 29 723 74.59

    01/11/2013 31 598 62.79 *3-Ton Greenspeed 24/7 auto heating/cooling
    01/12/2012 33 795 81.04
    01/12/2011 33 1137 116.60

    12/11/2012 31 566 59.64 *3-Ton Greenspeed 24/7 auto heating/cooling
    12/10/2011 30 579 61.95
    12/10/2010 31 580 61.04

    NOTE: 03/30/13 - 04/10/13: Had six family members visiting for Easter and four stayed on to help with garage sale and landscaping the following week. Extra daily baths, showers, dishwasher runs and hair dryer usage, cooking three meals a day, washer/dryer ran almost non-stop. They had all my doors and windows opened with A/C “off” for 12 hours a day while working between outdoors, the garage, the laundry, the kitchen, and cleaning out “junk” in closets. Outdoor temperature and humidity rose into the 80’s, Greenspeed “recovered” about 8 to 10 degrees each evening for sleep time.

  3. #42
    Join Date
    Oct 2010
    Location
    Anderson, South Carolina, United States
    Posts
    6,840
    Thanks for the update joy, hope all is well. Anxious to see how the greenspeed fairs this summer compared to last summer. I know the comfort will be greatly improved but I want to see the real savings so a projected ROI can be computed. Keep us posted as there is nothing like real world evidence of significant monthly savings.

  4. #43
    Join Date
    May 2004
    Location
    south louisiana
    Posts
    3,170
    I'm looking forward to seeing summertime comparisms also.
    hoping you save a good bit in summer & have the comfort of
    low RH!

    thanks for the update.
    The cure of the part should not be attempted without the cure of the whole. ~Plato

  5. #44
    Join Date
    Nov 2004
    Location
    SW FL
    Posts
    6,274

    Thumbs up We'll see What Summer 2013 brings ...?

    I would expect kW used to be similar to shown in attached file _IF_ the 2013 weather is close to 2012.

    One might notice that about 600 kW per month is not related to Cooling.
    Attached Images Attached Images
    Designer Dan
    It's Not Rocket Science, But It is SCIENCE with "Some Art". ___ ___ K EEP I T S IMPLE & S INCERE

    Define the Building Envelope and Perform a Detailed Load Calc: It's ALL About Windows and Make-up Air Requirements. Know Your Equipment Capabilities

  6. #45
    Join Date
    Aug 2012
    Location
    Florida Space Coast
    Posts
    503

    Update for May 2013

    FSEC has been monitoring my energy usage for the past 6 months. On Friday, May 17th, they spent the afternoon doing the "shallow retrofit" portion of the study. They replaced all my incandescent light bulbs with either CFL, LED, or CFL/Halogen hybrid bulbs. They wrapped my water heater, cleaned the coils on my fridge, and installed a "smart strip" for my entertainment center to eliminate the "phantom" energy draw from components when the TV is not in use. They offered to replace my 2.5 gpm shower heads with 2.0 gpm low flow shower heads, but I declined. With all the other savings, I don't feel bad about splurging a bit when I jump in the shower!

    Here's an update through my last FPL billing as of May 13, 2013. The milder weather this year over last likely has had a positive impact on my energy usage, but I'm convinced the Greenspeed is the major factor contributing to lower bills.

    Bill Date Days kWH $Bill
    11/10/2012 30 794 81.05 *3-Ton Greenspeed installed 11/08/2012
    11/10/2011 29 811 84.22

    10/11/2012 29 1531 161.92 *3.5-Ton Rheem condemned 10/18/2012
    10/12/2011 29 1489 159.87

    09/12/2012 30 1680 179.09
    09/13/2011 34 2081 229.53

    08/13/2012 32 2360 257.78 *3.5-Ton Rheem leak repaired 07/31/2012
    08/10/2011 28 2064 227.74

    07/12/2012 30 1868 200.87
    07/13/2011 33 2203 244.11

    06/12/2012 33 1741 186.81
    06/10/2011 30 1749 190.64

    05/13/2013 33 928 94.54 *3-Ton Greenspeed 24/7 auto cooling (no heat needed)
    05/10/2012 29 1138 116.80
    05/11/2011 29 1438 153.71

    04/10/2013 29 910 92.68 *3-Ton Greenspeed 24/7 auto heating/cooling (See NOTE)
    04/11/2012 30 1119 114.06
    04/12/2011 33 870 89.77

    03/12/2013 28 594 63.14 *3-Ton Greenspeed 24/7 auto heating/cooling
    03/12/2012 31 637 66.21
    03/10/2011 28 420 46.64 *Windows open for Spring, 3.5-Ton Rheem turned off!

    02/12/2013 32 604 63.30 *3-Ton Greenspeed 24/7 auto heating/cooling
    02/10/2012 29 551 58.15
    02/10/2011 29 723 74.59

    01/11/2013 31 598 62.79 *3-Ton Greenspeed 24/7 auto heating/cooling
    01/12/2012 33 795 81.04
    01/12/2011 33 1137 116.60

    12/11/2012 31 566 59.64 *3-Ton Greenspeed 24/7 auto heating/cooling
    12/10/2011 30 579 61.95
    12/10/2010 31 580 61.04

    NOTE: 03/30/13 - 04/10/13: Had six family members visiting for Easter and four stayed on to help with garage sale and landscaping the following week. Extra daily baths, showers, dishwasher runs and hair dryer usage, cooking three meals a day, washer/dryer ran almost non-stop. They had all my doors and windows opened with A/C “off” for 12 hours a day while working between outdoors, the garage, the laundry, the kitchen, and cleaning out “junk” in closets. Outdoor temperature and humidity rose into the 80’s, Greenspeed “recovered” about 8 to 10 degrees each evening for sleep time.

  7. #46
    Join Date
    May 2004
    Location
    south louisiana
    Posts
    3,170
    I thought there would be more savings. but hottest months are ahead of us.
    05/13/2013 33 928 94.54 *3-Ton Greenspeed 24/7 auto cooling (no heat needed)
    05/10/2012 29 1138 116.80
    05/11/2011 29 1438 153.71
    May shows good savings, but I'm interested in june-sept savings
    as ours is a cooling climate.

    how is comfort Joy? RH%? do you find RH 50% say in april/may
    or is it higher? if you are holding 50% RH, are you setting tstat temp higher?

    I find at 50% RH in my house that setting tstat on 76 is great,
    but when RH creeps up to 55%+ then tstat temp needs to be 72
    for comfort.
    still playing around with my whole house dehumidifier,
    for the most part dehumidification comes from vs air handler.

    thanks for sharing your info with us. I hope you'll continue
    to do so through the summer into fall.

    thanks!
    The cure of the part should not be attempted without the cure of the whole. ~Plato

  8. #47
    Join Date
    Aug 2012
    Location
    Florida Space Coast
    Posts
    503
    Quote Originally Posted by energy_rater_La View Post
    I thought there would be more savings. but hottest months are ahead of us.
    05/13/2013 33 928 94.54 *3-Ton Greenspeed 24/7 auto cooling (no heat needed)
    05/10/2012 29 1138 116.80
    05/11/2011 29 1438 153.71
    May shows good savings, but I'm interested in june-sept savings
    as ours is a cooling climate.
    LOL! Me too! I'm really anxious to see how much I'll save this summer. If I could speed up time, I would!

    Quote Originally Posted by energy_rater_La View Post
    how is comfort Joy? RH%? do you find RH 50% say in april/may
    or is it higher? if you are holding 50% RH, are you setting tstat temp higher?

    I find at 50% RH in my house that setting tstat on 76 is great,
    but when RH creeps up to 55%+ then tstat temp needs to be 72
    for comfort.
    still playing around with my whole house dehumidifier,
    for the most part dehumidification comes from vs air handler.

    thanks for sharing your info with us. I hope you'll continue
    to do so through the summer into fall.

    thanks!
    For April & May, I kept the daytime temp set at 75* with the %RH max set at 45%. With overcooling to dehumidify, my RH% has been 48-52%, except for the two weeks after Easter when my daughter and the "garage sale crew" kept all the windows and doors open until 8/9 o'clock at night and I had to turn the A/C off! The Greenspeed did recover quite well each evening, however, so that by 11 PM the temperature was right at 72 with about 50% RH.

  9. #48
    Join Date
    May 2004
    Location
    south louisiana
    Posts
    3,170
    don't rush summer...I'm enjoying these weeks prior to 90+ degree days later on!
    I haven't got the soaker hoses set up for the vege garden yet!
    today it is 98 degrees 68% RH outside
    inside it is 76 degrees & 53% RH.
    just vs ahu, no dehumidifier.

    everyone notices the difference in the RH in
    my house, even if they don't know beans about
    % of RH.
    The cure of the part should not be attempted without the cure of the whole. ~Plato

  10. #49
    Join Date
    Nov 2004
    Location
    SW FL
    Posts
    6,274
    Quote Originally Posted by energy_rater_La View Post
    I thought there would be more savings. but hottest months are ahead of us.
    05/13/2013 33 928 94.54 *3-Ton Greenspeed 24/7 auto cooling (no heat needed)
    05/10/2012 29 1138 116.80
    05/11/2011 29 1438 153.71

    thanks for sharing your info with us. I hope you'll continue to do so through the summer into fall.

    thanks!
    I have Cooling Degree Days at
    CDD 5/2013 311
    ___ 5/2012 274
    ___ 5/2011 343
    Designer Dan
    It's Not Rocket Science, But It is SCIENCE with "Some Art". ___ ___ K EEP I T S IMPLE & S INCERE

    Define the Building Envelope and Perform a Detailed Load Calc: It's ALL About Windows and Make-up Air Requirements. Know Your Equipment Capabilities

  11. #50
    Join Date
    Aug 2012
    Location
    Florida Space Coast
    Posts
    503

    Update for June 2013

    Here's an update through my last FPL billing as of June 12, 2013. I'm thrilled to see my June power bill cut in half over prior years!!!!!!!!!!!!!!

    Of course, the milder weather this year likely has had a positive impact on my energy usage, but I'm convinced the Greenspeed is the major factor contributing to lower bills.

    Bill Date Days kWH $Bill
    11/10/2012 30 794 81.05 *3-Ton Greenspeed installed 11/08/2012
    11/10/2011 29 811 84.22

    10/11/2012 29 1531 161.92 *3.5-Ton Rheem condemned 10/18/2012
    10/12/2011 29 1489 159.87

    09/12/2012 30 1680 179.09
    09/13/2011 34 2081 229.53

    08/13/2012 32 2360 257.78 *3.5-Ton Rheem leak repaired 07/31/2012
    08/10/2011 28 2064 227.74

    07/12/2012 30 1868 200.87
    07/13/2011 33 2203 244.11

    06/12/2013 30 890 90.99 *3-Ton Greenspeed 24/7 auto cooling (no heat needed) (See NOTE #2)
    06/12/2012 33 1741 186.81
    06/10/2011 30 1749 190.64


    05/13/2013 33 928 94.54 *3-Ton Greenspeed 24/7 auto cooling (no heat needed)
    05/10/2012 29 1138 116.80
    05/11/2011 29 1438 153.71

    04/10/2013 29 910 92.68 *3-Ton Greenspeed 24/7 auto heating/cooling (See NOTE #1)
    04/11/2012 30 1119 114.06
    04/12/2011 33 870 89.77

    03/12/2013 28 594 63.14 *3-Ton Greenspeed 24/7 auto heating/cooling
    03/12/2012 31 637 66.21
    03/10/2011 28 420 46.64 *Windows open for Spring, 3.5-Ton Rheem turned off!

    02/12/2013 32 604 63.30 *3-Ton Greenspeed 24/7 auto heating/cooling
    02/10/2012 29 551 58.15
    02/10/2011 29 723 74.59

    01/11/2013 31 598 62.79 *3-Ton Greenspeed 24/7 auto heating/cooling
    01/12/2012 33 795 81.04
    01/12/2011 33 1137 116.60

    12/11/2012 31 566 59.64 *3-Ton Greenspeed 24/7 auto heating/cooling
    12/10/2011 30 579 61.95
    12/10/2010 31 580 61.04

    NOTE #1: 03/30/13 - 04/10/13: Had six family members visiting for Easter and four stayed on to help with garage sale and landscaping the following week. Extra daily baths, showers, dishwasher runs and hair dryer usage, cooking three meals a day, washer/dryer ran almost non-stop. They had all my doors and windows opened with A/C “off” for 12 hours a day while working between outdoors, the garage, the laundry, the kitchen, and cleaning out “junk” in closets. Outdoor temperature and humidity rose into the 80’s, Greenspeed “recovered” about 8 to 10 degrees each evening for sleep time.

    NOTE #2: 06/10/13: My grandson moved in with me, so I'm expecting double the hot showers, dishwasher runs, cooking and washer/dryer usage throughout the summer. Hoping the FSEC retrogrades offset the increased power consumption related to a second resident.

  12. #51
    Join Date
    Aug 2012
    Location
    Florida Space Coast
    Posts
    503
    Quote Originally Posted by energy_rater_La View Post
    how is comfort Joy? RH%? do you find RH 50% say in april/may
    or is it higher? if you are holding 50% RH, are you setting tstat temp higher?

    I find at 50% RH in my house that setting tstat on 76 is great,
    but when RH creeps up to 55%+ then tstat temp needs to be 72
    for comfort.
    still playing around with my whole house dehumidifier,
    for the most part dehumidification comes from vs air handler.

    thanks for sharing your info with us. I hope you'll continue
    to do so through the summer into fall.

    thanks!
    We're into the summer stormy season now, so it's rained every afternoon for the past few days. Today we have dry air coming in from the North, so it's not as humid as usual. Right now the outside temperature is 88 degrees with 72% humidity. My Touchscreen thermostat/humidistat is set for 75 degrees/45% RH. With overcooling, the current inside temperature is 73 degrees with 51% humidity. Quite comfortable! While it runs almost constantly, it rarely ramps up above 40% compressor speed at 350 total cfm!!!!

    And it's still so quiet inside and outside that you'd never even know it was running unless you were in a position to see the fan spinning (outside) or the "cooling" notation on the Touchscreen (inside).

  13. #52
    Join Date
    Jun 2003
    Location
    Madison, WI/Cape Coral, FL
    Posts
    6,373
    Quote Originally Posted by Florida Joy View Post
    We're into the summer stormy season now, so it's rained every afternoon for the past few days. Today we have dry air coming in from the North, so it's not as humid as usual. Right now the outside temperature is 88 degrees with 72% humidity. My Touchscreen thermostat/humidistat is set for 75 degrees/45% RH. With overcooling, the current inside temperature is 73 degrees with 51% humidity. Quite comfortable! While it runs almost constantly, it rarely ramps up above 40% compressor speed at 350 total cfm!!!!

    And it's still so quiet inside and outside that you'd never even know it was running unless you were in a position to see the fan spinning (outside) or the "cooling" notation on the Touchscreen (inside).
    Glad you are happy. Personally, I would prefer 78^F, 45%RH. A properly set up simple a/c with a small whole dehumidifier would provide this using less energy. Less of an investment and lower operating cost.
    Also will be interested in hearing about your %RH with cool wet weather. Also many duct systems do not provide uniform air distribution throughout the home during low air flow. Also during the off cycle, interested in observation of the moisture re-evaporation of the moisture on the large coil back into the home.
    Keep us posted.
    Regards TB
    Bear Rules: Keep our home <50% RH summer, controls mites/mold and very comfortable.
    Provide 60-100 cfm of fresh air when occupied to purge indoor pollutants and keep window dry during cold weather. T-stat setup/setback +8 hrs. saves energy
    Use +Merv 10 air filter. -Don't forget the "Golden Rule"

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