why is an electric heater 100 efficient
What s the difference between efficiency and effectiveness when it comes to electric heaters? We get a lot of calls from folks who want to know how efficient our heaters are at heating a home. The answerPwe often give isPsimple: electric heat is 100 percent efficient. All the energy that goes into the heater is converted into heat energy. Problem solved. Question answered. Unless that isn t exactly what the caller meant to ask. Talking about efficiency in those terms is how an engineer might looks at the question, but I suspect most customers are asking somethingPfundamentally different: How much will this heater cost to operate in comparison to other options out there? In other words: How cost-effective is this heater? That question isn t easy to answer with specific numbers. PThere are so many variables that go into that equation including: your local electric rate, the construction of your home, how you use your heating system, local climate, elevation and what (if any) other heat source you use in your home. Here s what we can tell you:POur heaters are pretty darn effective at heating your homePwhether they re your primary heat source or used with a central system. PThey turn all or most of the electricity that goes intoPthem into heat.
PThat heat is sent directly into your cold space, instead of through ducts. PYou can heat the room you re in, and not heat ones you aren t using. We think all those things combined makes them very cost-effective, even in places with high electricity rates. Let s take a closer look at why that is. Our baseboard heaters turn 100 percent of the energy that goes into them into heat. Fan heatersPuse a small amount of energy toPpower a motor that turns a fan, which circulates air through your room. PTechnically speaking that makes fan heaters less efficient than baseboards, but that doesn t mean it s the best choice for your wallet or the environment. That fan helps spread the air through your room quicker than a standard baseboard, which means the heater worksPfor a shorter amount of time to keep you just as comfortable. Because you pay your power bill based on kWh (kilowatt hours), the fan heater will be more cost effective at heating your home because it will usePless energy. No ductwork means less energy loss inside your home How efficient a heater is at converting energy to heat is one thing. How efficient it isPat spreading that heat through your homePis something elsePentirely.
If you re using an centralPfurnace, a lot of heat is lost traveling through ductwork between the furnace and the air vents in your living spaces. That isn t the case with our heaters, which are installedPin the wall in individual rooms. There are no ducts so all the heat is directly sent into your living space. Heat the room you re in andPsave energy The other issue with efficiency comes with how you heat your home. With a centralized system, you re paying to heat the entire home or large parts of it, whether you re using all the rooms or not. With a room-by-room heating system, you can individually heat rooms when they re in use and keep them at a lower temperature when they re not in use. So while we can t really give you specific numbers on much it will cost to run our heaters in comparison to the alternatives, we re comfortable saying that our heaters arePvery cost effective, especially when you use them as your primary heat source or in combination with a central system to heat the room you re in.
The energy used is the multiplication of power and time. If I leave my 1 kW heater on for one hour it will consume 1 kWh of energy. The electricity company will bill me for that 1 kWh.
Here in Silicon Valley, our electricity is supplied by PG E, and for that 1 kWh, PG E will bill us about 14В. If I turn on the 1 kW heater all day, the energy used is 24 hours x 1 kW = 24 kWh. We would pay $3. 36 for that. Reconsider the example where I turn on my 1 kW heater for 5 minutes and off for 15 minutes, and I repeat this for an hour. Then the total energy used in that hour will be 0. 25 kWh. If I repeat this all day, the total energy used in a day is 6 kWh. I have not changed the heater, the power is still 1 kW, the energy used is less because it is on for less time. If I turn on my 2 kW heater all day, it will consume 48 kWh, and that is what the electricity company will bill us for. If I turn that same heater on for 15 minutes and off for 15 minutes, it is on for half the time. If I repeat this throughout the day the energy used is: This is the same as if I had had the 1 kW heater on all day and our bill would again be $3. 36. Remember that for electrical energy it is meaningful only when you know the time period in question. If I tell you that my heater uses 24 kWh, that tells you nothing unless I add that is the amount of energy used in a hour, a day, a week, or some other time period.
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