Saturday, April 6, 2013

Don't Envy Me for My Envi Electric Heater

The Envi heater, centrally mounted at the bottom level of our home.
Sure, it puts out heat, but so does our toaster.

This is a short review on the Envi electric heater, but first, I cant' help but provide a quick commentary on the state of our nation's energy infrastructure and the ridiculous, economic ironies it operates within and how it affects our pocketbooks.  No "smart grid" will be able to fix this fundamental flaw.

To generate electricity, we burn coal and oil in order to boil water that builds enough pressure to spin generator turbines that produce electricity that eventually is drawn to our home to operate our countless appliances to serve our needs, including generating heat to keep us warm.  Sound efficient?  Times that by 100 million homes.  You'd think there'd be a more efficient way we all could heat our homes in the 21st century.

Natural gas eliminates a lot of these physio/logistical inefficiencies since we capture the heat by burning it where it is needed and we don't lose energy by converting the energy into something else first (electricity) then convert it back into heat in order to stay warm those cold winter nights.  Using more natural gas is inherently much more efficient because of this incomparable advantage over electricity where heat is generated on demand as heat into heat and not first converted into electricity, to heat our homes.  That said, natural gas needs almost as much infrastructure as electricity to deliver its energy to the masses through millions of feet of pipes, containers, valves, etc.

Just a thought, now I'm really digressing from a boring product interview:  If only we could buy something at the supermarket with our food -- a "Box of Heat" which only we would buy as needed or in bulk like at Costco's, as we choose, eliminating the need of building and maintaining a separate distribution system and infrastructure.  I guess the closest thing out there is kerosene or propane tanks -- if only they weren't so heavy and dangerous (and more efficient).  Something that is completely safe to transport that weighed about the same as a gallon of milk that could heat a home for a couple of weeks.  Imagine, supermarket priced competition to heat our homes.

Still, lugging the "Box of Heat" to the house and inserting it into the centralized home heating unit still wouldn't be as convenient as just plugging a heater to an electric outlet and just turning a dial -- kind of like the many portable electric heaters available on the market today.  (Well, there's Culligan for water delivery, so why not a "Box of Heat" delivery service, then?  Since there would be no infrastructure needed to maintain and you were willing to pay a convenience fee for delivery, the cost of the "Box of Heat" would still deliver heat to consumers at much lower prices.  Okay, back to the product review....)  One of the electric heaters you may choose to look into is the Envi electric heater, which is sold online and advertises heavily in magazines, like "Popular Science" and the web.  It's a radiator with no moving parts, which ensures that most of the electricity it consumes goes to producing a slow and steady heat.  I like that efficiency model, it makes sense.

.... but I say "slow and steady heat", because without a fan to circulate the heat, it takes a long time to heat up an area compared to a normal space heater with a fan.  You basically need to keep it on most of the time you want a room kept warm, but without a thermostat, the cryptic control dial up top doesn't make it very practical if you leave it unattended, like to go to sleep, or if you have anything more useful to do with your time than stare at your new wall-mounted heater.  More than once I walked into the room the Envi was heating and the room was sweltering hot, so hot I had to open a window.  So much for the money saved in less moving parts.

You can mount the Envi heater easily enough on a wall, but the cord dangles, even when using the clips at the bottom that are supposed to hold the power cord, you almost have to fold the cord and snake it awkwardly to fit it underneath.  Then, it's hard to see the clips to fasten the cord in the clips to begin with.  It doesn't detract and hide the power cord well -- not ideal if little kids are around, who will inevitably pull the cord out and be exposed to a bare electric plug because they pulled the cord out of the socket.

Speaking of children around the heater, there is a single on/off button in the top front right side with a red LED light, inviting kids to push it on and off.  Since it's not better hidden up top like the dial and it's more clear what its function is than the dial, they're bound to notice it sooner or later.  The heater may be able to be mounted on any wall, low and out of sight, but it lacks basic tamper-proof measures for children.  You think you had shut the heater off because it's a warm day?  Think again!  More than once, we found the Envi heater on, pumping out heat, while the A/C was running, trying to keep our home cool.  In South Dakota, it's not atypical for the weather to vary 60 degrees in a single day, just in case you're wondering.

It all makes as much sense as our country's energy infrastructure, or buying a heater without a thermostat.  In short, the Envi heater is good for one thing -- augmenting heating your home on the coldest nights in that room that never seems to get enough heat.  Instead of installing a heater in that area, however, might I suggest you put in better insulation, or use that cooler room as your wine cellar/workout room?

8 comments:

  1. We live in Northeast Oregon in a 550 square foot house. We got rid of our dirty, expensive oil furnace and bought three of these...well, if it stays above 35 or so, these actually kick out enough heat to keep the house fairly warm. Electric bill soared, but still cost less than the nearly $1,000 each year to fill the oil tank. We have ultimately supplemented with two additional ...oh, what do you call them?... Circulating oil type space heaters...which cost about $30 each and kick butt with heat output. Now we mostly use those two and not the Envi's. If it's in the teens or single digits or below, we crank them all on. A problem I'm having is with what they call "ghosting"....black carbon-like deposits that they are leaving on my walls that don't wash off. Have you experienced this? I don't have carpet, we don't smoke, the windows aren't open, and I keep my house clean? So how are they drawing in "dirt particles" and baking them onto the walls above the heaters? I could send you photos...I don't know what to do about them.

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  2. I'm no expert in these matters, just an experienced consumer. Perhaps in your situation an electric space heater is best, a $30 electric space heater from Costco would easily heat your house in 20 minutes because they're equipped with fans, the Envis aren't.

    If you are using anything to heat your home that is actually showing signs of exhausting poisonous smoke into your house (a furnace burns oil, but it only transfers heat by convection throughout the house while safely sends its exhaust through vents to the outside of the home) I would say that the "ghosting" on your walls could be the sign of a serious health risk -- If it's depositing soot on your walls, it's in the air and that would never be healthy or safe in an enclosed space.

    I'm not familiar with a "circulating oil type" space heater. Just like it's not a good idea to run a generator or any combustion engine inside a house, this doesn't sound safe. Also, please tell me that you don't actually keep your home at 35 degrees and you stay warmer than that. Good luck to you -- stay warm over this harsh winter!

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  3. The heater they're referring to is a radiator with a heating element sealed in an oil bath. The oil circulates inside to heat the fins.

    I'm sure they meant the outdoor temp was 35 degrees F.

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    1. Thank you for clarifying. That makes more sense -- referring to the 35 degrees F. But a radiator with a heating element sealed in an oil bath that generates heat indoors that could possibly emit carbon dioxide inside a house and produce oil deposits on walls?! I'm just your standard consumer so could you please elaborate on that? Thank you for sharing. At any rate, an electric coil heater seems much safer for indoor applications, doesn't it? The problem with an Envi heater is it's missing a fan to circulate air quickly and it doesn't have a thermostat to shut itself off so it's prone to being wasteful since it will heat a room regardless of the existing temperature.

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    2. Aaron. There are no emissions from the oil-filled radiators, just like any other electric appliance. They are not combustion equipment. They are electrically powered and the heating element is contained within the fluid. See this for description.

      http://www.amazon.com/Holmes-HOH3000-Oil-Filled-Heater/dp/B003XKI8TO/ref=sr_1_4?ie=UTF8&qid=1395666637&sr=8-4&keywords=oil+filled+radiator

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    3. It could just be the effect of dust in the air, being heated, (and possibly ionized lightly) then being deposited on the wall above the heater by the convecting air. If the paint is latex (or oil, for that matter), the heat could soften it enough for the dust to adhere. Over time, even light dust would darken the wall in that area.

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  4. It looks so cool! I should consider this in my checklist. I was actually looking for the best space heater, I'm getting confused on what brand should I buy!

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  5. "A problem I'm having is with what they call "ghosting"....black carbon-like deposits that they are leaving on my walls that don't wash off. Have you experienced this? "

    Many buildings with forced draft heating will have similar marking around the registers. Forty years ago we touched on this in a fluid dynamics class but I don't remember the details. It has something to do with temperature variations promoting air flow which brings the dirt and the warmer surface grabbing onto the dirt and holding it somehow. As I said, it was forty years ago (dang, I'm getting old) and memories have faded.

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