What Nearly 5,000 Owner Reviews Tell Us About Countertop Water Distillers

By Megahome Editorial Team· September 22, 2026 · 6 min read

TL;DR

Across roughly 5,000 Amazon ratings (4.5–4.7★ as of September 2026), owners praise water quality, taste and value — and are frank about fan noise, run time and scale. Here is what the data says, and the practical fixes owners use.

Short answer: owners are overwhelmingly positive about the water a countertop distiller makes and the money it saves, but they are honest about three trade-offs — fan noise, a run time of about 5.5–6 hours per 4 litres, and scale that needs regular cleaning. We read the review data for Megahome distillers across Amazon, Trustpilot and Rakuten to show what to expect before you buy, and how long-time owners get the best out of their unit.

Where does this data come from?

Megahome distillers have been sold online for about two decades, which means there is an unusually large public record of owner experience. We looked only at publicly visible ratings and review summaries, checked on 22 September 2026.

Source	Listing	Rating	Number of ratings
Amazon.com	Stainless steel, glass bottle	4.5★	3,173
Amazon.com	MH-943TWS, glass bottle	4.6★	1,613
Amazon.com	MH-943SBS (316 stainless steel)	4.5★	310
Amazon.com	MH-943SWS, glass bottle	4.7★	269
Trustpilot	Former UK distributor	4.6★ (94% five-star)	3,730 reviews
Rakuten Japan	MH-943SBS / MH-943TWS	4.66★ / 4.63★	80 / 54

Amazon pools ratings across its marketplaces, so the same ratings appear on several country sites. Counted once, the Amazon listings add up to roughly 4,800–5,000 ratings. Independent reviewers have reached similar conclusions: in a January 2026 review, Bob Vila described the Megahome distiller as "one of the safest water distillers".

What do owners like most?

Amazon groups what reviewers mention into themes. On the two largest US listings, these were the most-discussed positives:

Overall quality — 835 and 628 mentions, 86–92% positive. Many reviewers are on their second unit or bought one as a gift.
Water purity — 286 and 290 mentions, about 90% positive. Owners who test with a TDS meter commonly report readings of 0–6 ppm, and many point to the residue left in the boiling chamber as visible proof of what was removed.
Taste — 307 and 254 mentions, 83–86% positive. The words that come up again and again are "crisp", "clean" and "no aftertaste"; coffee and tea drinkers are especially enthusiastic.
Value — 343 and 296 mentions, 77–82% positive. Owners who replaced bottled water estimate the unit paid for itself in roughly 3 to 12 months, and like having no plastic jugs to carry home.
Ease of use and cleaning — about 220–270 mentions each, 83–88% positive.

Longevity also stands out. Owners describe 6, 8 and 9 or more years of daily use, and one German owner reports around ten years on a first unit.

What frustrates owners — and how do they solve it?

The same data is just as useful for its complaints. These are the recurring ones, with the fixes experienced owners share.

Fan noise

This is the most common criticism: on one large listing only 44% of noise mentions were positive. A Japanese dealer lists about 56 dB at 30 cm and 52 dB at 1 m — roughly the level of a desk fan. Most owners simply run the distiller overnight, while they are out, or in a kitchen corner or utility room with the door closed.

Run time

A 4-litre batch takes about 5.5–6 hours, and speed was rated positive in only about half of mentions. Owners plan around it: one batch overnight and, if needed, one during the day covers most households' drinking and cooking water.

Scale and the "boil-dry" finish

The distiller keeps heating until the boiling chamber is empty, then switches off. In hard-water areas this can bake scale onto the bottom. Many owners plug the unit into a simple timer set to about 5 hours 40 minutes so it stops just before the chamber runs dry, and descale regularly with citric acid.

"It won't start"

Durability was the one theme rated "mixed" on every major listing. The part owners mention most is the thermal reset switch, typically after one to two years — and a thick layer of scale under the boiler can make it trip early. Before assuming a fault, try this order:

Descale the boiling chamber if you haven't done so for a few weeks.
Press the reset button on the base.
Check the fan duct for dust, which can make the unit overheat.
If it still won't run, contact your seller — replacement switches, fan motors, gaskets and bases are available as spare parts.

Warmth in the room

Distillation works by boiling water and condensing the steam, so the heat has to go somewhere. Owners in warm climates prefer running it at night or in a well-ventilated space.

What does it cost to run?

The MH-943TWS is rated at 580 W (565 W heater plus 15 W fan). Running for about 5.75 hours uses roughly 3.3 kWh per 4 litres — about 0.8 kWh per litre. Multiply 0.8 by your local electricity price per kWh to get your cost per litre, then compare it with what you pay for bottled water. Our cost calculator does the maths for you.

A simple care routine owners recommend

When	What to do
After each batch	Empty any remaining residue and rinse the boiling chamber.
When you see white scale	Descale with citric acid (more often with hard or well water).
As the instructions specify	Replace the activated-carbon post-filter.
Every few months	Wipe dust from the fan and air vents; check the lid gasket.

For more on the water itself, read Is distilled water safe to drink every day? and distilled water vs filtered water.

Which model do reviewers choose?

The white MH-943TWS is the most-reviewed everyday model. Owners who want an all-stainless look choose the MH-943SWS, and those who want 316 stainless steel choose the MH-943SBS. All are made by Megahome in Tainan, Taiwan, where the company was registered in 1992; the MH943T and MH943S models carry TÜV Rheinland's GS safety mark (certificate 50514575). To find an authorised seller in your country, see Where to Buy.

Key takeaways

Around 5,000 Amazon ratings average 4.5–4.7★ (September 2026); independent Trustpilot and Rakuten reviews are similar.
Owners value purity, taste and savings versus bottled water most.
Expect a desk-fan level of noise and 5.5–6 hours per 4 litres — most owners run it overnight.
Regular descaling and a plug-in timer prevent most "won't start" problems.

Frequently asked questions

How loud is a countertop water distiller?

A Japanese dealer lists about 56 dB at 30 cm and 52 dB at 1 m for Megahome units, roughly the level of a desk fan. Most owners run it overnight or in another room.

How long does it take to make 4 litres?

About 5.5–6 hours per batch. Many households run one batch overnight.

Why does my distiller stop or not start?

Often scale under the boiling chamber makes the thermal switch trip. Descale, press the reset button and clean dust from the fan duct before contacting your seller.

Should I use a timer?

Many owners do. Setting a plug-in timer to about 5 hours 40 minutes stops the unit shortly before the chamber is dry, which reduces baked-on scale.

Sources

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