Reviews of Honeywell TH4210D1005 Electronic Programmable Thermostat

Customer Ratings:
List Price: $110.33
Sale Price: $44.94
Today's Bonus: 59% Off

I had a Lux programmable thermostat before this one, but it had some issues with my heat pump system... so I purchased this as a replacement. I've used it for roughly a month or two now, and it has worked flawlessly.

Like the Lux t-stat I had previously, it has four daily programs. During the winter, I have mine set to warm the house before I wake up, keep the house cool when I'm at work, warm it back up before I come home, and cool it down when I'm sleeping. Unlike the Lux t-stat I had, this allows you to have a nighttime setting after midnight. For example, I have my latest setting to bring the house to 65 at 12:30am. The Lux t-stat wouldn't let me do that, because it's technically the next day, but this one accounts for that... which is helpful. You can choose a different set of programs for the weekend. Unlike some programmable t-stats, this one forces you to use the same program for Sat and Sun, instead of having separate programe for each of those days. It's not an issue for me, but it may be for some people. There are other t-stats that allow you to set Sat and Sun separately.

If you change the temperature manually, it will override the program until the next time interval that you set. If you decide to take a vacation, you can set the temperature manually, and press the 'hold' button to override the program until you release it yourself.

The screen is backlit when you change a setting, so you can see what you're doing at night.

Also, a really cool feature that I liked is that the t-stat learns how long it takes your house to change temperatures. Instead of toggling your heat at the time you set it to, it will toggle the heat earlier, so your house reaches the temperature you set by the time you specify. This means if you come home at 6, you don't have to set your heater to turn on at 5.... you set it to 6, and the heater will turn on at the time it learned it needs to turn on to get your house warm by 6.

The only issue I have with this is the aux heat. I wish there was a way to fine-tune how the auxiliary heating works. I'm not even sure how it works now it seems to turn on at random, and not when it makes sense (ie when it's extremely cold outside). I'm not a heating expert, so there may be a reason for this, but my old thermostat seemed to manage it better.

In any case, I definitely recommend this if you're looking for a heat pump programmable thermostat this works on both the heat pump and air conditioning side of things. Haven't tried the AC features yet, but I'm sure it'll be fine :)

Click Here For Most Helpful Customer Reviews >>

This is a great functionally equivalent replacement for the Honeywell 8100 series heat pump thermostat. The terminals aren't exactly the same but I was able to figure out what went where by looking at the installation manuals for the old unit and the new one and lining up the functions.This unit is not billed as a homeowner installable (consumer grade) unit but I had no trouble installing it myself on my 2 stage heat, single stage cool heat pump. You'll need to know what kind of system you have, gas heat, electric heat etc but once you have the information you need, this is an easy install.

Best Deals on Honeywell TH4210D1005 Electronic Programmable Thermostat

My experience was on the TH4100D1007 model, but applies to this model too. After changing the batteries on the unit, the unit stopped working correctly . After trouble shooting on my own and reading up online, it was very clear it was the motherboard. I called honeywell, and they said the installing plumbing contractor would have to be called ( 80$ service call NOT to be covered under the 5 year warranty) in order for the licensed contractor who originally purchased the unit would have to be the one to file a claim. What if they are no longer in business! I told them I would happily pay for the replacement cost, but they said they could do nothing without the contractor calling and the contractor can't call unless they come out for a 80$ service call. Now that I know this "racket" , I would like everyone to know to ask their heating contractor to put in a "non-professional" thermostat that can be purchased at home depot , lowes , etc. That way i can serviced by you without the expensive service calls. I think Honeywell could have given me a chance to just get a new faceplate. They were unfriendly about it as well. Stay away from any models that start in TH and go for the PTH and save a lot of time and money.

Honest reviews on Honeywell TH4210D1005 Electronic Programmable Thermostat

It works as stated. No real problems here, but I hate this thermostat so much. The design was made by an engineer with no sense of intuition at all. When you look at it, it seems like a cluster***k of meaningless button. You get what you pay for though. There is a reason why this is on deep discount. The product experience just sucks. It's confusing. On top of that the pullout instructions barely tell you anything. They're barely instructions. I can't believe a huge company like this made such a crappy product. I had to watch a YouTube video to understand it -and I'm not old either, I'm not even 40 years old! I use computers and everything, but I found this to be dumb, dumb, dumb.

For example... Why is there no button, so that I can activate the light and see the screen, hm? And the language they use is confusing.

These things should be easier to use. I turn a wheel and set the temperature, then it remembers my preferences, and I can just leave it. That's how it should be. A wheel, a digital display to show me what's going on, and an on/off switch. In this day and age that shouldn't be too hard, should it? Then again there's always the "you get what you pay for" idea. A Nest Thermostat costs almost $200.

Find helpful customer reviews and review ratings for Honeywell TH4210D1005 Electronic Programmable Thermostat

Since this thermostat is for a heat pump it has a lot of wires. I found typical wiring instructions online and was able to install it myself. It is so nice to set the temperatures for different parts of the day and not have to worry about turning it up and down. Keep the pullout card handy and you'll have no problem changing settings.

Discount White-Rodgers F29-0143 Thermostat Guard

Customer Ratings:
List Price: $29.04
Sale Price: $18.39
Today's Bonus: 37% Off

It's clear. It appears fairly tough. I doesn't appear to mess with temperature or humidity readings although it has a lot of air moving over it in my installation.

I wish there was a shallower version available. It sticks out pretty far beyond the 1.25" thermostat. It only comes with 1 key.

Click Here For Most Helpful Customer Reviews >>

Reviews of ANNA Ceramic Heater

Customer Ratings:
List Price: $119.99
Sale Price: $99.99
Today's Bonus: 17% Off

Its quiet, small in size and attractive. However the face of the heater gets really hot -you would burn your fingers if you touched it right after turning it off. Also the controls being on the rear means you have to turn it around to adjust or "learn" how to do it without looking --mostly OK except the temperature setting wheel has no lines or numbers to assist in setting the temperature so if you have a favorite setting and it accidentally gets reset (easy to do with the thumb wheel being on the back) then you will have to experiment in order to find that setting again. And as in my photos, the high / low heat output button is not obvious as to which is which and the wattage in the documentation is wrong.

Usage Update: you better not change your mind after you turn this guy off (or turn the thermostat down) because it will not restart and put out heat until it cools down -which takes 15 to 20 minutes. It apparently thinks it is overheated and thus the long cool down period is needed before it will start up again. You really have to like small, quiet, attractive and expensive in order to put up with this guy.

Click Here For Most Helpful Customer Reviews >>

If you live in a small apartment, such as the styles found in San Francisco, this is a great piece. It is the least ugly heater I've ever seen, so it doesn't clutter the place. It is surprisingly small, and stows away easily when you are not using it. When you are, it cranks out heat, but rather silently. The only thing I'd say they need to improve is that the buttons on the back are poorly labled. I can't tell if I'm on the high setting or the low setting, because the toggle switch doesn't tell you which is which. Oh, designers.

Best Deals on ANNA Ceramic Heater

I was looking for a small heater to take on a cruise through the baltic, where I suspected that it would be very cold inspite of the ships heating system. I liked the looks of the ANNA and the weight. When I got it, it would heat for about three minutes then the thermostat would turn off, and i couldn't get it to turn back on for about 8 hours. I ordered a seceond one and it ran a little longer, but the same problem with the themostat occurred again. I read and reread the instructions, and had my kids read them, but no success.

Once the thermostat would click off heating, even though the thermostat was about in the middle of its range of rotation, I could NOT get it to turn on again for many hours. The purpose of a space heater is to keep the "space" at the temperature you want, thus it should turn off and on again by itself, but if you want the temperature a little higher you should be able to rotate the thermostat and have it turn on again. We have other heaters that work that way, but both of these ANNA heaters would not. Finally I just gave up and sent them both back. I did give it two stars because it is quiet when it did run, the heat output is adequate, and the styling is excellent. But if the thermostat won't turn on and off automatically, or when you want more heat and you turn the thermostat manually...it's useless as a space heater. But it can be used as an expensive, stylish doorstop.

Honest reviews on ANNA Ceramic Heater

This is by far the most architect friendly space heater out there. It puts out a lot of heat and is nearly silent. It does not have much of a fan, though.

The biggest problem is that it claims to have a thermostat. This led me to think that I could set a specific temperature, like 70 degrees. This is pretty much a standard feature on space heaters. It may have a "thermostat" on the interior but the only control setting is hotter/colder. In addition there are no markings on the rolling dial adjustment knob. I guess you could mark it up with a sharpy your self. Isn't this a great opportunity for some minimalist Swiss graphic design? Is no markings the ultimate in minimalism?

If you only use this occasionally, it is wonderful. If you use it daily I would still consider it, but also other manufacturers.

Find helpful customer reviews and review ratings for ANNA Ceramic Heater

turns off after only a minute, even on high setting. clearly the thermostat is not calibrated properly. Fans also quite weak. on top of that, they put stickers all over it which leave major gunk when removed. such a drag.... i returned it. so much potential

Discount Avanti 166 Bottle Wine Cooler

Customer Ratings:

I bought the Avanti because it was one of the cheapest wine fridges on the market at the time (in 2007) for the number of bottles held. I've come to somewhat regret that choice. Before I start with the problems, I will say it is an attractive cellar. The glass door, the lights at the top, and the shelves look nice. The brown-painted metal walls are similar to regular household refrigerators. The engine/fan noise is definitely present, but it is quiet enough that I keep mine in a formal dining room without a problem over dinner.

Now for the problems:

First, the off-gassing is a serious problem. When I first got it, I cleaned the shelves and the inside fridge walls over and over, aired them in the sun, and left piles of baking soda in it. I still felt uncomfortable leaving my higher priced bottles in it, the chemical smell was so strong. The smell lasted 4-5 months!

Second, the shelving slots and the distance between shelves were designed to only fit the smallest shape of all standard (750ml) wine bottles: Bordeaux bottles (Cab/Merlot/Sauvignon Blanc). With anyone other type of wine, the shelves are a pain. If your bottle is slightly fatter, the next one won't fit in the adjacent wooden slot. If the bottle is slightly longer, you can't oppose necks to stagger bottles in the back row. So instead of 11 bottles on shelf, you may only get 7 to 9 and they roll around since they don't sit in the slots.

The bigger problem is the shelves are too close together, so except for Bordeaux bottles, the shelf above your bottles won't slide well, and it scrapes the labels off the bottles beneath it. The worst case is with some Rhone wines (incl. Syrah), Burgundy (Pinot Noir) and Champagne bottles: you have to remove every other shelf to allow enough head room.

All of which dramatically impacts how many bottles you can really hold. In my mixed collection, I can probably store about 100 bottles.

Finally, my compressor quit after 18 months. It was still under warranty but the company will not pay for labor, just the part, and the part is back-ordered for at least a month. To make matters worse, none of our local refrigeration companies want to service Avanti products. We called numerous companies, and they all said it was an "off-brand". Avanti was no help either they offer no service for the entire states of Georgia and South Carolina.

So, the old lesson lives: you get what you pay for.

Click Here For Most Helpful Customer Reviews >>

I sell wine for a living. I needed storage space fast, and I bought two of these. One broke after six months, couldn't be repaired, and Avanti gave me a brand new one. That broke after four months, and then the other one eventually broke too. I have extended warranties on them but I don't even want to fix them because it's too much trouble unloading all the wine every time they break. If I have them repaired I'd bet big bucks that they break within a year. Two thousand bucks down the toilet. If you want one of mine I'll have it fixed for you on the warranty and you can have it for $200. On top of wasting my money, I can't just throw these in the garbage, so I may have to pay to get it taken to a landfill. They should ban any product coming from china that weighs more than 20 pounds this product led to me to throw out a half ton of garbage, and that's just from one year of use! If I could give it negative stars I would. If I could pay another $100 to make Avanti suffer a fraction of the pain I've endured over this P.O.S. I'd send it in right now. Recap: 3 brand new units all broken and worthless after six months of use.

Best Deals on Avanti 166 Bottle Wine Cooler

RE: AVANTI COOLER ACTUALLY FREEZES YOUR WINE AND AVANTI COULD CARE LESS

I have had this unit for almost 8 months now and this morning I discovered about 12 bottles had blown their corks. My beloved CA Pinot collection is toast!

The "Set Temp" LED read 58 degrees F. Right next to it sits the "Internal Temp" LED, which read 32 degrees!!!

I took pics of this, and of the blown corks, the frost covered wine collection of 90 bottles or so. But Avanti didn't care. I spoke to a superior manager, but she didn't care and said I saved money on the purchase. Avanti could care less about your wine collection. Do not buy their products if you care about your wine. Simple as that.

/LM

Honest reviews on Avanti 166 Bottle Wine Cooler

The wine cooler does take a number of times to clean before the chemical smell finally goes, but seems to be a well constructed unit for the price. My only real issue is the spacing of the draws and the fact each draw only holds 11 bottles, 12 would have been nice. The spacing becomes a problem if you have wine from different wineries that use non-standard bottle sizes.

Find helpful customer reviews and review ratings for Avanti 166 Bottle Wine Cooler

They only way this cellar holds 166 is if the wine bottles are a standard size bordeoux wine. Since wine collectors obviously purchase wines from all over the world there is no way to expect this cellar to hold 166. For me it is more like 140. My temperature control is also usually off by two degrees, no bigee but adds to the disappoinment

Reviews of Air King 8605 Low Profile Die-Cast Heater with Adjustable Thermostat

Customer Ratings:
List Price: $92.00
Sale Price: $71.71
Today's Bonus: 22% Off

We purchased this heater two years ago and liked it so well we have purchased three more. It is sturdy, well-built (with a cast aluminum element--no thin metal to make noise), and unobtrusive. It is absolutely silent. None of our units has ever made noise. Granted, it has no fan and works by convection only, but having a room heater without the fan noise or the incessant clunking is wonderful. We use ours as bedroom heaters and they work perfectly. Think of this heater as a small, supplemental baseboard heater.

This is the same unit as the Lasko 5605. Air King and Lasko share many products...

Click Here For Most Helpful Customer Reviews >>

I purchased this to put under a window I use for ventilation during the winter. I have an exhaust fan in the ceiling across the room.

This is perfect, even on low.

Sturdy build with a quality cord.

I think you will be happy and toasty if you invest in one!

Update 10/18/2012: This is the best purchase I have made in 20 years.

Update 3/11/2013: I adore this heater, I don't worry about it catching fire because it has no moving parts. The only problem I've had: one of the feet comes loose when I move it. Oh, well.

Best Deals on Air King 8605 Low Profile Die-Cast Heater with Adjustable Thermostat

Amazon $40 12/08/2011

Pro

Lo setting OK to warm poor insulated room smaller than 10x10 with outside temp 30f.

Retains heat so saves a little energy.

Light Weight.

Good Value if under $50

Fits in odd areas & does not block veiw.

Cons

Controls hard to reach since its at floor level.

Hard to see control labels unless you are on the floor.

No handles.

Feet too easy to slide off due to poor plastic molding

Honest reviews on Air King 8605 Low Profile Die-Cast Heater with Adjustable Thermostat

If you are looking to heat-up an entire room... even a small room... this is not the product for you. It has no fans to distribute the heat, and it does not produce a large amount of heat (though the top grill gets hot enough that you cannot touch it for more than about 2 seconds, before you would feel the need to withdraw your hand).

In spite of that, I am pleased with this product, and I will tell you why:

I only needed to heat up a very small area... within about four feet of the heater... by about 5 degrees more than the ambient room temperature... to make the area around a personal office / computer work station more cozy on winter mornings.

It is able to do that... and unlike the vast majority of personal space heaters on the market... it is DEAD SILENT. No fans... and no periodic clunking / clicking / pinging noises.

If you only need to heat up a very small area (like around your desk), and you require not just "quiet operation" but indeed "absolutely silent operation"... this is an excellent choice.

If you are seeking to warm-up an entire bedroom... no... this is not what you want... you need a heater that has fans to distribute the heat around the room more efficiently... and yes, that is going to make at least a little bit of noise.

So I do recommend this item... but again... only for warming up a very small area of "personal space" in an environment where absolutely silent operation is preferred. Within those limitations... this product is a good choice.

Find helpful customer reviews and review ratings for Air King 8605 Low Profile Die-Cast Heater with Adjustable Thermostat

this heater worked for 3 months september through november it simply and mysteriously stopped working it was not used daily i only used it a few days out of each week in my studio i do not recommend this product

White-Rodgers 1F87-361 80 Series Single Stage 7 Day Programmable Reviews

Customer Ratings:
List Price: $146.33
Sale Price: $74.40
Today's Bonus: 49% Off

I purchased this thermostat based on it's 7 day progammability AND the option to turn OFF the function which heats or cools the house to the set temperature by the set time. That function is advertised as an off/on option on the manufacturer's website and in the programming guide. However, my unit simply skipped that step in programming mode, rendering the early start function permanently on. White-Rodgers customer service was at times curt and borderline rude. I was told to reset the unit to no avail. I then bought this Lux thermostat and am very, very happy with it.

Lux TX9000TS Touch Screen Seven-Day Programmable Thermostat

Click Here For Most Helpful Customer Reviews >>

Great thermostat, easy to use, does what it says on the box. Over-specced possibly if you don't need the 7-day functionality, otherwise ideal.

Best Deals on White-Rodgers 1F87-361 80 Series Single Stage 7 Day Programmable

It was an excellent choice, giving excellent flexibility in maintaining the perfect temperature setting seven days a week, for maximum energy efficiency.

Honest reviews on White-Rodgers 1F87-361 80 Series Single Stage 7 Day Programmable

I bought this thermostat from Amazon based upon our experience in our previous home in which we had the multi-stage version of this White-Rodgers thermostat, and which ran flawlessly. The operation of these thermostats is simple, and when they function as advertised, they have several features that I like, such as the ability to calibrate the displayed temeprature (e.g., so that control can be made relative to a temperature elsewhere in the house other than the thermostat's location). I also like the "early-on" feature. Finally, our previous White-Rodgers thermostat did a fantastic job of maintaining a comfortable temperature in the house.

Unfortunately, I had to return the 1F87-361 because it was constantly failing in its duties, requiring daily resetting (and reprogramming) to get it to work. Also, as stated by another customer in this thread, the "early-on" feature (called Energy Management Recovery or EMR by White-Rodgers) was not available as a setting in the thermostat's Configuration Menu. In my particular thermostat, EMR was always off (according to the manual, the factory default for this setting is supposed to be ON).

All this said, when it worked, the White-Rodgers did a much better job at controlling temperature in our house than the factory-supplied (nonprogrammable) Bryant thermostat, which I have had to re-install until I can replace it with a better thermostat. The difference in comfort achieved by the two different thermostats is so great that I am -stillconsidering getting a White-Rodgers thermostat, but only after much more research.

Find helpful customer reviews and review ratings for White-Rodgers 1F87-361 80 Series Single Stage 7 Day Programmable

Easy to install, with a simple 7-day program (each day can be programmed differently). Takes 1 AA battery so settings are kept during a power outage. I'm using this to control 3 electric baseboard heaters in a large (26 x 20) room (through a relay; this is a low voltage unit). I've been using this thermostat for just over 4 months now without any problems at all.

Buy Lasko 675945 Stanley 12-Inch Ceramic Utility Heater

Customer Ratings:
List Price: $74.39
Sale Price: $37.99
Today's Bonus: 49% Off

It sounds silly, but the handle on the top of this space heater increases its portability tenfold. It's very light, and because it only takes one hand to move it around, I'm constantly switching it from the floor to an end table. The many different heat settings mean that you can be very picky about the heat blasting out at you.

Another feature that I find preferable is that it heats constantly, unlike some space heaters which practically light you on fire but come on only intermittently. This handy space heater stays at the temperature you choose the entire time. I've run this thing for 10 hours at a time with no ill effects. It lasted through last winter and is still going strong this winter. When I had the flu for a couple of weeks, I hunkered down on my couch with this on the coffee table and baked myself every single night for the entire night.

I adore this thing and I'm about to order another to keep in my office. (I live in a house that was built in 1825 so it can be a little drafty. Because all the rooms are small and the house is full of doors just for the purpose of trapping heat, it's more energy efficient for me to squirrel myself away in my office with the door shut and the space heater on than to crank the furnace in the entire house up.

EDIT 9/19/2013: This thing is still going strong. During the winter, my programmed thermostats turn the house temp way down, so at night I close the doors to my room and bake myself all night. This heater has never once let me down. At this point, I can't tell you how many nights it's run the entire night, 8+ hours, every night during the winter months. It still works just as great now as the day I first got it. I LOVE this heater.

Click Here For Most Helpful Customer Reviews >>

I bought this heater in November 2010 from another seller. I first used it in a room that did not have a carpeted floor and it provided good heat for its size although the temperature was only about 60-degrees F so it really wasn't much of a test. At the end of the month when the temperature dropped to the 40s and 30s at night, I used the heater in a rather small 15' x 13' carpeted room and almost froze until I realized this: the heater blows its heat downward toward the floor. I was about to return it for being defective until I decided to try sitting it on a small box I had. After I put it on the box, it started heating the entire room with no problem at all even getting too hot at the highest setting. The fact that it blows downward could be a defect, but I am thinking that because this is actually a utility heater, it is made for non-carpeted rooms which helps bounce the heat around the room or keep it from igniting items directly in front of it although I could be wrong.

For the quality, this heater is very durable and sturdy. It has a very solid feel to it, with a good weight. Nor does it feel or look cheaply made. The fan sound is a bit noticeable compared to my tower heater, but it isn't loud as to hinder sleeping or watching tv. One thing about the heater is that the fan is always on high, but, in my opinion, that is good for low heat settings because it still helps distribute the heat throughout the room. The thermostat isn't digital but works very well. If the temperature is constant outside, the heater keeps the room at a fairly even temperature. And, I like the fact that I can turn the knob to exactly where I want it rather than it being set at say 5 degree increments the way my tower heater is.

This heater and all of its comparable models do use quite a bit of electricity. I have noticed that this heater will use about 36 kilowatts in a 24-hour period. That is about $4 $6 a day depending on the electric company rates.

I have used this heater every day for the past month with no problems at all other than having to sit in on a box. So, overall, I give it 4 stars. The only thing taking away is the fact that I have to sit it on the box, the slightly audible fan noise and the amount of electricity it uses. But those are all very minor, in my opinion, for the comfort it provides.

Best Deals on Lasko 675945 Stanley 12-Inch Ceramic Utility Heater

(sorry for the VERY poor video quality my little digital camera isn't exactly designed for making movies and the sound does not pick up very well either; hope you can turn up your volume and still get the gist!)

This video briefly compares the Holmes HQH307 Tower Quartz Heater, and a Dr Heater Portable Quartz + PTC Infrared Space Heater 1500W, Dual Heating System, UL Listed.**, with the spotlight on the Lasko 675945 Stanley 12-Inch Ceramic Utility Heater. While all three heaters are relatively energy efficient choices each have various strong and weak points which are discussed, but the Stanley model is a BIG winner in a small package! It costs the least and heats even a large room just about as fast and as well as my old favorite, Dr. Heater.

Important: the design of this model produces directional heat it blows on an angle towards the floor. On hard surfaces like tile or hardwood this is a huge plus for quick distribution of heat. When I use this in a carpeted area, the carpet will absorb the heat and the room takes longer to warm unless I put the heater on heat resistant surface a couple of feet above the floor like on a small end table.

Edited to add: the description states "built-in safety features, which consist of a self-regulating ceramic heating element and automatic overheat protection", but please be aware that this unit appears NOT to have a tip-over shut off feature.

The video highlights differences in features and functions of each, including demonstrating how fast and how hot each unit gets comparatively.

Uses about 36kwh per 24hrs; you can use your electric bill to find your rate to see what this unit will cost to run day to day.

No word on longevity as this is a new purchase for me. Very pleased with this item so far though and happy to recommend!

** for more information on the Dr Heater Portable Quartz heater please check the product page and/or my review of it which was posted on October 21, 2011.

Honest reviews on Lasko 675945 Stanley 12-Inch Ceramic Utility Heater

Pros: Compact and quality design. Easy to operate and safe. good heating and fast startup. You can be sure to feel the heat as soon as it starts up.

Cons: Initial smell of the camicals used to protect the ceramic heating parts. A little noisy.

Find helpful customer reviews and review ratings for Lasko 675945 Stanley 12-Inch Ceramic Utility Heater

Sturdy, with a great handle, so it's easy to pick up and move around. But no turn off "tip over" switch. I almost started a fire on the carpet with this heater turned over. Most of my other space heater turn off. So do not use in a children's area, could be dangerous. It's very industrial looking but it's only looks. The output is no more than any other of its size and it pulls a LOT of electricity for the output you get. Thermostat is a joke, doesn't regulate a steady temp at all. THE WORST is the noise...IT'S THE NOISIEST HEATER I HAVE EVER HAD...and it varies with its noise, in cycles like a snoring person!...LOL...Anyways, the bottom line was the cost vs efficiency and this heater fails.