APEC ROCT-PLUS Review: Lab Analysis & Hands-On Testing

Full Analysis of the APEC ROCT-PLUS

Filtration: 4.50/5.00

The APEC ROCT-PLUS countertop RO system scored 4.50/5.00 for filtration. How? Most importantly, it achieved excellent results in our lab testing and the filtered water had a clean taste and no odor. However, it has no NSF/ANSI certifications for contaminant reduction nor any third-party testing for contaminant removal.

1. Lab Results: 5.00/5.00 (2024)

In our lab test comparing an unfiltered and a filtered tap water sample, the APEC could remove 11 undesirable impurities and contaminants to below the minimum detection level (so essentially to 100%): chlorine, bromodichloromethane, bromoform, dibromochloromethane, chloroform, copper, barium, lithium, iron, aluminum, and zinc.

The following substances remained in our water:

• Boron was reduced by a solid 80%.
• Strontium was reduced by a very high 96%.
• Fluoride was reduced by a moderate 55%.

Finally, TDS decreased by 88%. TDS should not be interpreted independently, as it does not override inadequate removal of individual contaminants. That said, ≥85% is a good removal rate, but not as high as more effective RO systems we tested.

Lab Results Charts

2. NSF/ANSI Certifications and Other Test Data

The APEC ROCT-PLUS does not have any NSF/ANSI certifications for contaminant reduction. It also lacks third-party testing for contaminant removal.

3. Filtration Process

We have 1 composite filter cartridge and a UV light post-filter, which comprise 4 filtration stages:

• Stages 1-3 are performed by a composite filter (PP sediment pre-filter + RO membrane + activated carbon post-filter). The polypropylene sediment pre-filter layer is mechanical filtration, which acts like a sieve to remove solid, undissolved particulates such as dirt or rust. Next, the RO membrane uses reverse osmosis to effectively remove the vast majority of contaminants and minerals. Finally, the activated carbon layer removes things like bad tastes and odors, chlorine/chloramine, disinfection byproducts and other organics, as well as certain metals.
• Stage 4 is the UV post-filter, which exposes the filtered water to germicidal UV radiation prior to dispensing, inactivating microorganisms. This provides chemical-free disinfection; however, in our view, it should not be relied upon to make non-potable water safe to drink, but rather to help control microbial regrowth in stored water and prevent off-tastes from stagnation.

4. Taste and Odor Tests

In both our 2024 and 2025 tests, the filtered water was odorless and had a perfectly clean taste.

Usability: 3.46/5.00

The APEC achieved a usability score of 3.46/5.00, based on its performance in the following categories:

1. Initial system assembly including filter priming (0.70/0.80)
2. Everyday use (2.26/3.70)
3. Filter replacements (0.50/0.50)

1. Initial Setup: 0.70/0.80

Assembling the ROCT-PLUS is easy. We have clear directions in the user manual. However, there were fewer illustrations compared to some of the other systems we tested.

Here’s a quick breakdown of the setup procedure:

1. Open the top cover and install the filter by pressing down and turning it clockwise. Replace the lid.
2. Remove the feed tank cover, take out the tank, and fill it with tap water.
3. Replace lid, reinstall feed tank on base, and plug power cord into an electrical outlet.
4. Turn the system on. It will automatically flush for 5 minutes with the display screen showing a clockwise loop. 
5. System will start producing purified water with the screen displaying a 99 second countdown.
6. When the water quality indicator blinks, press the water dispensing key to dispense water. Water is not drinkable at this stage.
7. Repeat steps 5-6 two to three times until 3 L of water is flushed through the system. Note: when the display screen shows “L1,” pour out the wastewater in the feed tank and refill it with tap water.
8. After 3 L is flushed, the water quality indicator will stop blinking.
9. Now your system is ready to use.

2. Day-to-Day Use: 2.26/3.70

2.1 Speed & Water Capacity: 0.6432/1.12

The ROCT-PLUS is generally suited for daily use. While it lacks a carafe or external clean water tank to store water for later, its pump-driven dispensing speed for ambient water is still acceptable.

You can fill a 40-oz bottle from a single feed tank – no need to refill the tank in between. However, you’ll have to push the dispense button more than once to obtain this full amount, as the system stops dispensing after ~32.5 oz. It then requires a considerable amount of time to process new water before it can dispense the remainder. Most standard 40-oz bottles should fit under the spout without tilting, as its height is 9.15″ from the base.

However, you can’t fit a standard 2-quart carafe under the spout, as it’s not high enough. You could still dispense 2 quarts without refilling the feed tank, assuming you found a container that would fit – it would just require more than one button push.

As for hot water, using a full feed tank (~1.28 gal), in our test the system could dispense 67 oz of the hottest temperature in one continuous dispense, which should be plenty for pretty much all beverages and instant food.

We also investigated how much ambient filtered water could be produced from one full feed tank, regardless of how much time or how many button pushes it took to fully process and dispense this entire volume. For the ROCT-PLUS, this maximum volume was 100 oz (12.5 cups). Assuming 25.5 cups or 31.5 cups of daily water consumption for the average US and US-family households, respectively, and 12.5 cups filtered water per full feed tank, we estimate 3 daily refills – about average for the countertop ROs we tested.

The ROCT-PLUS also filters fast enough to meet the daily water needs of the average-sized US households, and it can handle thirst bursts. In our ambient water speed tests, it could dispense 1 cup in 22 sec and 4 cups in 1:20 min when the water was pre-processed, meaning the feed tank was filled and allowed to filter this water first. Upon refilling the tank, it took 5:12 min to dispense 4 cups of water.

Hot water is noticeably slower, taking 52.5 sec to dispense 1 cup of pre-processed water, which is pretty standard amongst the hot water countertop RO systems we tested. Hot water is particularly slow to dispense because it must be heated on demand; flow must be slow enough to give it time to reach the desired temperature.

Because dispensing isn’t especially fast — particularly for hot water — having only a single volume preset limits convenience compared to systems that offer multiple preset options.

2.2 Dispensing: 0.64/0.80

Dispensing ambient or on-demand hot water is simple and splash-free using the APEC’s responsive and seamless control panel, built into the top of the unit.

As mentioned above, this system has one volume preset (8 oz); you can also dispense a custom volume. There are 7 temperature presets (ambient, 113, 131, 149, 167, 185, or 203 °F).

You can stop dispensing early if needed by pushing the button again, but in our test it took a couple of seconds for the system to ramp down. We think most people would get used to this after a while, but you might overfill a few glasses before you get the hang of the timing.

The optional child safety lock keeps your family safe from accidental hot water injuries, and there’s even a small magnetic drip tray to collect stray droplets.

2.3 Hot Water: 0.694/0.74

More on the hot water:

As mentioned, the ROCT-PLUS can dispense enough hot water for virtually all typical household use cases – which we define as at least 32 oz at a time. In other words, it can produce sufficient hot water for beverages like tea, coffee or hot chocolate (8-16 oz), instant noodles/soup (14-20 oz), and cooking assist/pot jump-start (16–32 oz). In fact, in our test it could dispense up to 67 oz of ~198.7-200 °F water at one time.

Plus, the temperature of the dispensed hot water was quite accurate when tested with our own thermometer. Based off the unit’s presets, we measured (ROCT-PLUS preset vs. our measurement):

• 113 °F vs. 115.2 °F
• 131 °F vs. 131 °F
• 149 °F vs. 148.8 °F
• 167 °F vs. 165.7 °F
• 185 °F vs. 184.5 °F
• 203 °F vs. 198.7-200 °F

Only at the highest temperature setting did the APEC struggle slightly to reach the preset level, but it was still very close. Assuming 195–200 °F is almost ideal for coffee, tea, soups, and noodles, with ≥200 °F being the optimal, kettle-equivalent performance, this system earned a nearly-perfect score in the hot water category.

2.4 Refilling & Size: 0.32/0.56

Refilling the ROCT-PLUS is a little awkward. The feed water tank is tall and located in the back of the system, making it a little more difficult to remove and put back on its base, depending on where you place the unit.

However, there are max./min. fill lines and additional markings for 125, 90, and 55 oz, which are nice to have.

Plus, it’s simple to keep track of when it’s time to empty the wastewater and refill the feed tank, thanks to its water shortage/change indicator.

Measuring 7.9″x15.6″x14.3″ (WxHxD), the APEC fits under standard height (18”) kitchen cabinets, and at 18.2 lbs, its weight is about average for the countertop ROs we tested. Its footprint, though smaller-than-average, isn’t exactly what we would consider space-saving compared to the other tested systems, occupying 112.97 in2 (~0.78 ft2). Plus, at nearly 8” wide it is not streamlined enough to fit in narrow spots.

2.5 Other: -0.04/0.48

The ROCT-PLUS lacks a carafe or pure tank to store water for later. While not a dealbreaker, it’s still a nice option to have – particularly if you want instantly accessible water or you wish to stow your filtered water in the fridge for chilling.

It also has a basic water quality indicator that shows a color status for the purified water being produced (blue = excellent, violet = good, red = bad). However, it doesn’t display a numeric TDS reading or measure the feed water TDS.

Finally, the unit makes enough noise when filtering to be disruptive to conversation in the same room.

The noisiness and lack of carafe lowered the overall usability score of the system.

3. Filter Replacements: 0.50/0.50

Filter replacements are easy as there is only one cartridge to replace and it’s easily accessible through the system’s top lid, quickly twisting in/out.

The filter change indicator light on the display screen also alerts you when it is time to change. Rated filter life for the cartridge is 1,056 gal or 12 months.

Assuming 500 gallons of yearly water consumption for the average household, we predict the frequency of your filter changes will be dictated by filter age rather than water consumption. Therefore, expect to replace it every 12 months.

That said, a 1,056-gal or 12-month filter life may be unrealistic (more info below). Using a lifespan of up to 6 months, filter replacement frequency would increase to 2x annually.

Costs: 3.86/5.00

Based on value for money, the APEC ROCT-PLUS achieved a cost score of 3.86 out of 5.00, indicating it is priced above average for what it offers compared to competing systems (a score of 4.00 represents average value). Notably, while its upfront price is around average, its annual filter replacement costs are slightly above average compared to the other ambient/hot water countertop RO systems we tested.

1. Upfront Price

As of November 4, 2025, the ROCT-PLUS is priced at $417.99. This is around the $415.64 average across all the tested countertop RO systems that produce ambient and hot water. You can also save 5% with a filter subscription.

2. Long-Term Expenses for Filter Replacements

Based on 500 gallons consumption and a 1,056-gal or 12-month filter life, we estimate $86 in annual filter replacement costs, which is well below the $149.47 average across all the tested countertop ROs.

However, given the lack of NSF/ANSI certifications for contaminant reduction, replacing filters twice yearly might be a safer choice, which would bring annual filter costs to a slightly above-average $172 per year. A filter subscription would save you an additional 10%.

3. Product Warranty

The system is covered by a 1-year warranty. However, this is increased to a 2-year warranty upon product registration.

4. Other Cost Factors

Other features which we feel boost the APEC’s value include:

• UV light post-filter
• Child safety lock

Additional

1. Pure-to-Drain Ratio Tests

We measured a pure-to-drain ratio of ~1:0.50 (2024) and ~1:0.49 (2025), which is low wastewater for RO systems in general and better than the average ~1:0.61 across the countertop RO systems we tested.

2. Construction

The system feels sturdy and well built.

3. Design Elements

The ROCT-PLUS has a simple and very modern appearance with its clean lines and black and white color scheme. Amongst its other useful features is the optional boiling point correction (“High Altitude Mode”), which lowers the max hot water temperature for those living at higher elevations.

4. Incomplete Product Listing

We feel the information provided on the APEC website and Amazon product page seems incomplete.

5. Frequent Customer Complaints

We read about issues with poor/unresponsive customer support or replacement filters being out of stock. Other customers complained about malfunctioning units.

We did not experience these issues firsthand.

Bottom Line: Runner-Up Countertop RO for Hot Water (4.16/5.00)

Filtration weighted at 60%, and usability and cost at 20% each, the APEC ROCT-PLUS scored a final rating of 4.16 out of 5.00.

It holds the second place spot for countertop RO that combines effective filtration and on-demand hot water.

Importantly, the system achieved a great 4.50/5.00 in our filtration analysis. It produced odorless, clean-tasting water and completely removed most contaminants in our lab testing. However, it has no NSF/ANSI-certified contaminants or 3rd party testing for contaminant reduction.

Performance drops off in the usability area; while it’s easy to set up and maintain, it lacks a carafe or external pure water tank to store water for later. Refilling is a bit awkward with the feed tank located in the back of the unit.

It is also noisy during filtering and a bit slow to dispense, particularly for hot water – and there’s only one volume preset to offset this inconvenience. The ramp up/down from dispensing takes some getting used to as well. On the plus side, it produces enough water that is plenty hot for most typical uses, has a modern appearance along with a few helpful features – feed tank and filter replacement indicators, a child safety lock, temperature presets, a basic filtered water quality indicator, low wastewater, and high altitude correction. With average upfront and slightly higher ongoing costs, this is a solid option for an ambient/hot water countertop RO with effective filtration.