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Nov 12, 2010 4:57PM

Engineer is absolutely wrong. The transfer of cold to warm is a mathematical inversion. The lower the inside temp, the faster is attempts to equalize.

The slow movement of the fan blades have almost no effect on the air temp. After 30 years of heating and cooling experience, I have learned a thing or two. The direction of rotation is not important - circulating the air is. If you set the thermostat to 55, how long will it take the furnace running to warm the house back up to 68? And setting the thermostat at 80 will not warm up any sooner. 55 to 68 takes the same time no matter the setting. Unless your outside walls are R50, and the house is air tight, there is always transfer. But then you will be sick all the time, as you will be re breathing the air you exhaled.

"As the temperature difference decreases between

the wall surfaces, the rate of air flow  increases and the effective R-values

of conventional insulations decrease"

Nov 12, 2010 4:28PM
Energy companys tells you all of these things to save energy. Well what do you do. You cut back on your therm, and reinsulate your house, and wrap your water heater. Then what happens. Your utility company is the only one that saves. Your kw are higher because the company has to make money but they save because they pay for less kw. You use less but pay more per kw. So why freeze. use a lot more and only pay a little more. Don't believe it. Check your kw and see if you pay the same per kw hour if you use a little or a lot
Nov 12, 2010 3:51PM
Do not listen to "hesback"--he's wrong!  He has no knowledge of even basic thermodynamics, as evidenced by statements such as "the outside walls need to warm up so the interior can hold heat or cooling".  His next statement: "The lower the inside temp., the more rapid (we won't even address grammar here) the cold air infiltrates."  WRONG!  Infiltration is driven principally by pressure differential, not temperature differential; however, the small component of infiltration that is driven by temperature differential will be LESS if the inside temperature is closer to the outside temperature.  In other words, if the outside temp is 55 or below, the infiltration drive will be less with an indoor temp of 55 than it would be with an indoor temp of 65.  Conduction, which is the other major transport mechanism of heat loss (radiation losses are insignificant in comparison to infiltration and conduction) is also less at indoor temps closer to outdoor temps; the basic conduction equation is (area)x(U-value)x(temperature difference).  Next statement claiming that the furnace will cycle more often with a 55 degree setpoint than with a 65 degree setpoint--FALSE!  Next statement regarding ceiling fan--partially true.  If you want to use a ceiling fan in the winter, be sure the rotation is such that the direction of air flow is up; this will help to move the stagnant warmer air down into the occupied zone, thus contributing to a feeling of greater warmth.  This can also be accomplished with downward air flow; however, the cooling effect of the increased air velocity will negate that effect.
Nov 12, 2010 3:11PM

Do not listen to Energy Star. The programmable thermostat will save you enough money to go to McDonalds. A house is a box. the outside walls need to warm up so the interior can hold heat or cooling. The lower the inside temp., the more rapid the cold air infiltrates. if you lower the thermostat to 55 when gone for a weekend, the furnace will cycle more often than if you leave it at 65.

Save on heating and cooling by using a ceiling fan. Doesn't really matter which direction it runs - moving the air is the objective. Run it at the slowest speed. If your thermostat says 70 on the gauge, it will be over 80 at an 8 foot ceiling. A fan will get that heat down where you need it, and the furnace won't cycle so often. In northern winters a fan can save 20 to 50 dollars a month on heating alone. Of course, if you have 4 or five active kids, they'll keep the air moving too. For cooling it helps the temp stay more even at all levels in the room. Forget the designers, they want things pretty for tv, and don't care about comfort.

Also, if you have cast iron radiators, DO NOT paint or cover them. One coat of paint reduces their efficiency by 10%, covering with a pretty wood surround reduces them by 40  to 50%. Copper radiators are inefficient - what heats up fast, cools off fast. cast iron will stay hot for half an hour after the boiler shuts off.

Nov 12, 2010 3:09PM

Do any of you have unlimited water resources?

Nov 12, 2010 3:07PM
Contact me & I'll tell you how..
Nov 12, 2010 3:07PM

We have people saving 20% - 60% on their bills per month..

Nov 12, 2010 2:58PM
A timer on your hot water heaters.
Nov 12, 2010 2:29PM
all what it is somebody wants to make money
Nov 12, 2010 2:27PM
Adding attic insulation to attain an R-50 would be number one on my list. Ceilings beneath attic spaces have the geatest temperature differential and will transfer heat readily because of the differences in temperature. Attic insulation will also diminish heat gain during the warm Summer months which will reduce the cost of air conditioning.
Nov 12, 2010 2:24PM
impurities gather inside of hose restricting water flow,thus making machine run longer untill full of water
Nov 12, 2010 2:22PM

i think the same what has to do buying new washing machine or dryer with energy saving?

Nov 12, 2010 1:56PM
what has replacing your water hoses on your washing machine got to do with saving energy?
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