I was previously buying plastic gallons of distilled water at $1 a piece. I was horrified by how many plastic bottles I was accumulating.
This wasn't an easy purchase, Your return on investment will take about a year. It had been previously mentioned it will cost about .34 cents a gallon in electricity costs. So you figure .34 x 365 is $124, plus filters and cleaning supplies and the cost of the machine being $200, you're looking at around $350 vs $365 for plastic gallons. That being said, you are not drinking out of plastic, or having to to leave the house. This Megahome makes the cleanest water I have ever tasted. I have had no issues over the past few months using it daily. I have two small gripes.

#1. This thing burns deposits on the bottom of the distiller. This makes it extremely challenging to keep clean everyday. You want to get yourself a digital timer and set it for five hours. This will leave just enough water at the bottom to prevent that from happening.
#2. I dislike the carafe. i love that it's glass, but it leaks when pouring, so pour slow and steady.

I highly recommend this machine to anyone looking to improve their health and well being. It has provided me peace of mind about the quality of water I consume, and more energy to conquer my day.

[+] THE REVIEW:
I like this distiller and would recommend buying it. The only flaw is the plastic cap on the pitcher. They were smart enough to make a glass insert in the spout so the hot water would not pick up chemicals from the plastic and then they went ahead and made a plastic cap for the pitcher. All during the distillation process, the water collecting in the pitcher is hot enough that steam rises up and collects on the plastic cap and then falls back down into the pitcher. The fix was simple. I went to a glass company and for about $5 I had them cut a 6"x6"x1/8" plate. I use that to cover the top of the pitcher while I am using the distiller. I still like this pitcher better (even with the flaw) because it has a wide mouth for easy cleaning if needed. Buying the glass didn't break the bank and it was an easy fix.

It makes a gallon in about 5 1/2 hours. I use a timer to shut the distiller off at 5 hours 20 minutes which leaves about 8 oz of water in the chamber. This 8 oz contains condensed impurities. Better to throw it out than to boil it further. It also makes cleaning easier. I had a distiller a while back, and the noise from the fan is a little quieter than the other one (but not by much).

I am able to distill water down to less than 0.2 ppm. I use a PWT (pure water tester) instead of a traditional TDS meter. The difference is that it is more precise in the lower ranges (0.0 - 99.9). Traditional TDS meters do not read in the tenths. Just a note that the end result does fluctuate up to 0.4 ppm, which I am assuming has to do with other variables (i.e., water, how clean the chamber is before use, etc.) Also, I filter my water with a zerowater pitcher before distilling (I do not use tap water in the distiller).

I am going to try a few experiments to see if I can distill down to 0.0 ppm. I'll let you know if I succeed. [update] I did get it down to 0.0 ppm once, but for the most part I could only get down to 0.2 on a consistent bases. It was all just to see if I could do it because the difference of 0.2 ppm is so negligible that it is irrelevant. I'm guessing that the distillation of 0.0 ppm happened because all the variables happened to be perfectly aligned.

[+] A NOTE ABOUT DISTILLED WATER & MINERALS:
There is no down-side to adding liquid minerals to the distilled water. I add vitamin-c, magnesium and calcium to mine. I am not a doctor; however, this notion that drinking distilled water leaches minerals from the body has just got to stop. You do not (repeat - do not) get enough minerals from regular water to supply nutrition to the body. If you were fasting and you drank distilled water, then your body would start to deplete itself of minerals since nothing is being consumed. Guess what, the same thing would happen if you fasted and drank regular water. Water just does not hold enough minerals to make a difference on a grand scale. As far as trace minerals, you could add liquid minerals or better yet you should get them from consuming sea salt in your diet. Trace minerals are minerals the body utilizes in very, very small amounts. As a side note, most bottled water and tap water do not contain trace minerals. I hope that clears things up. I'm not a doctor - only someone with common sense.

[+] DRINKING DISTILLED WATER FOR HYDRATION:
Drinking sea water actually dehydrates a person, which is the opposite of what one might think. How can drinking any water make a person become more dehydrated? The answer lies in how water acts across a porous membrane when each side of the membrane has a different saturation of salt. When the levels are different, that forms what's called a gradient. Water always flows toward the "higher" saturated end of the gradient. So, in the example of being out to sea and drinking sea water that has a high content of salt, the water actually flows out of the body into the GI tract because the GI tract is filled with a high saturation of salt in the sea water. This is why drinking salty sea water dehydrates a person. Now let's reverse that. If you drink distilled water, there is no saturation of salt. Therefore, the water (in this case the distilled water) flows from the GI tract into your body, which has a higher saturation of salt, that being saline solution in the blood stream. In reality, you can hydrate yourself faster with distilled water because of this gradient effect. The water molecules enter into your body faster and supply the much needed water for your body to function. Again, minerals in water are insignificant as a dietary source. I hope this helps!

[+] USING DISTILLED WATER TO ADD YOUR OWN MINERALS: (added June 2018)
Distilled water is the best water to use if you want to add your own minerals, and here's why. Water cannot hold an unlimited about of minerals. At some point the water becomes saturated and the minerals just fall and collect on the bottom. You can try this by adding a small amount of minerals to water to see it absorb until the water is clear. Then, as you add more and more minerals the water stays cloudy, and if you let the water sit for a moment the minerals drop and collect on the bottom. So, knowing this, it is clear to see (no pun intended) that to absorb the most minerals of your choosing it is better to start out with water that lacks all minerals, hence, distilled water. I add powdered calcium, magnesium and Vitamin C to my distilled water. If I were to add these to regular tap water (i.e., tap water that already contains "other" possibly not-so-good stuff), then the water has less ability to absorb minerals because the water is already partially saturated with this other stuff. If your a person that does add certain vitamins and minerals to your water like I do, then distilled water is really the far superior water for this purpose. If interested, I add 1/4 teaspoon (1058mg) of Ascorbic Acid (Vitamin C), 1/4 teaspoon (831mg) of Magnesium Citrate, and 1/8 - 1/4 teaspoon (394-789mg) of Calcium Citrate depending on how much other calcium sources I have during the day. Here are the products I use to supplement with powder:
BulkSupplements Pure Ascorbic Acid (Vitamin C) Powder (250 grams)
BulkSupplements Pure Magnesium Citrate Powder (250 grams)
BulkSupplements Pure Calcium Citrate Powder (250 grams)

[+] ANSWER TO Just a Guy's Question: 2017
Just a Guy wanted to know a little bit more about the timer I used. Here is my response:
=> "Just a guy - You asked, "can you point us to the timer you use?" The timer I used is currently unavailable. It is:
https://www.amazon.com/gp/product/B018G86I08/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
I found a similar timer that looks identical to mine. It is:
https://www.amazon.com/Programmable-Digital-Switch-3-prong-Appliances/dp/B0191ZGELS/ref=pd_sim_60_1?_encoding=UTF8&pd_rd_i=B0191ZGELS&pd_rd_r=Y9TJG6A11AZ4TJ76Q5E7&pd_rd_w=QUjP4&pd_rd_wg=EtPOH&psc=1&refRID=Y9TJG6A11AZ4TJ76Q5E7"
Here's a link for your reference: 7-day Programmable Plug-in Digital Light Timer Switch with 3-prong Outlet, 15A/1800W (1 Pack)

[+] ANSWER TO Janica's Question: 2018
Janica wanted to know a little more details about the glass top I used. Here is my response to her:
=> "Hi Janica, in reference to the glass top I bought. I measured the diameter of the container opening using a foot ruler, and I left enough room for a little overhang because I didn't want to have to futz with positioning it. Then I went down to my local glass company and asked them if they could cut the glass in the thinnest glass possible. He recommended 1/8". He also rounded the edges at no extra charge so the edges were smooth to the touch. It took all of 10 minutes and about $5. The glass balanced perfectly blocking out anything that otherwise would fall into the freshly distilled water. I did not bring the distiller with me. I only brought the measurements and explained my situation. Then I crossed my fingers. But I thought, what the heck, if it doesn't work it's only five bucks. In this case, it worked as expected."

[+] COMMENT ADDED BY healthierme: (updated 7/12/2018)
healthierme posted a comment about distillers boiling dry. Here is my response to her comment:
=> "Hi healthierme, I never knew there was a distiller that had an auto shut off feature to prevent boiling dry - and here I thought I created something new, haha. You will find that once you use the timer a few times to get the precise length of time down, it works like a charm. It is little more crude than having it built in, but nonetheless, works flawlessly every time. One advantage that even the Waterwise doesn't have over using an external timer is that you can set both the start time and end time. For example, you can set up your distiller the night before and then let it start and finish distilling while you are at work. Set it and forget it! Thanks for the post!"

I had no idea how disgusting our tap water was... after using this product I now know. I urge everyone to research how gross public water is and how dangerous fluoride is for your body. ANYWAYS... this product is an affordable and convenient way to ensure safe drinking water an not having it in plastic bottles. Those filters most people use do not remove many of the contaminants and pharmaceuticals that you are drinking... ummm... gross.
The following pic is from distilling aprox 7 gallons of tap water

10/29/2017
tap water 343 PPM
distiller 0.01 PPM

I remove a star because it does not purify the water to 0 ppm. Actually if you wait to test the tds until the entire gallon brews, it will test at 0 ppm because it will be diluted enough. I tell you about the TDS 15ppm because I discovered through extensive testing and communicating with a MegaHome representative, that although this distiller DOES have a VOC valvce, it is still not capable of removing ALL VOCs, therefore, since VOCs evaporate at a lower heat than water, the initial inch or two of water during the beginning of the distillation will contain between 10-20ppm TDS, and it gradually drops down to 0ppm for the rest of the gallon. So at first I was just dumping the first 2 inches down the drain and was getting 0 ppm water so I was very happy, but this was wasting nearly an hour of the distillation process and wasting water, so I discovered that if I just dump the initial 2 inches of water into the ZeroWater filter I got from Target for $40 that it gets the water to a true 0ppm TDS.

In summary: My method (the method I recommend) is to distill your water with this distiller and then pour it through the ZeroWater water filter/pitcher, then it will be truly 0ppm and ready to drink. This creates the best tasting (or should I say tasteless) water I have ever had! Plus, since the water is already nearly pure when poured into the ZeroWater pitcher, it extends the life of the filter tremendously: I've been doing this process for 5 months and my water is still 0 ppm so I haven't even had to buy a new filter for the ZeroWater pitcher yet, and I brew 2 gallons a day like clockwork. I hope this review helps, if it does please click that it was helpful, thanks.