Best Under Sink Reverse Osmosis Water Filter.
There’s a lot of options when it comes to under sink RO systems.
Home reverse osmosis systems offer a wide range of features — from alkaline remineralization to higher pH+ water quality. After reviewing dozens of reverse osmosis systems I think these are the best for price and function.
Under sink reverse osmosis water filter reviews:
#1.) Home Master TMULTRA-ERP Ultra
#2.) iSpring RCC7AK Under Sink RO System
#3.) APEC RO-PH90 Under Sink RO System
#4.) Home Master TMAFC-ERP Artesian
#5.) Express Alkaline RO Mineralizing System
#6.) APEC Ultimate RO-PERM System
FYI: links go to Amazon (had lowest RO systems prices)
✅ Top #1 Pick: Home Master TMULTRA-ERP Review
The Home Master TMULTRA-ERP is a high-end, under sink reverse osmosis water filter system.
It’s a 6-stage filtration system and comes w/ specialized filters to remove 99.99% of microorganisms and 98% of metals and chemicals.
Filter Lifespan: 3,000 gallons annually
Tank Capacity: 3.2 gal.
Flow Rate: 75 gal. per day (GPD)
Home Master TMULTRA-ERP is great for well water (and some city water) where iron content can be higher.
It’s also a high-capacity system with 2-times the normal speed of standard RO systems.
Buyers confirm it’s super easy to install and love the long-lasting filters.
Lots of positive buyer reviews online.
The iSpring RCC7AK is possibly the most popular under sink reverse osmosis water filter system online.
It uses a 6-stage filter process to remove 99% of contaminants — chlorine, fluoride, lead, arsenic, bacteria and more (over 1,000 contaminants).
RO System: 6-stage
Tank Capacity: 3.2 gal.
Flow Rate: 75 GDP
Tap water is remineralized w/ healthy components such as calcium and magnesium.
Buyers the iSpring RO system made a huge difference in water taste and purity.
Very easy installation w/ live phone support (if you get stuck)!
Affordable, easy to install, and high-performing under sink RO system w/ lots of positive buyer reviews.
APEC RO-PH90 is an affordable, under sink reverse osmosis water filter system w/ lots of happy buyer reviews.
Multiple stages of water filtration (including a pre-filter) remove 99% of contaminants — final stage is remineralization which increases the pH level.
RO System: 6-stage
Tank Capacity: 4.5 gal.
Filter Lifespan: 1-year (approx.)
As a pH+ system it comes w/ specialized filters that remove 99% of particles:
lead, bad odors, chemicals, chlorine & bacteria
It’s also a very durable — buyers who purchased 2-3 years ago say it works perfectly today (although you will need to change filters each year).
Buyers confirm it’s very easy to install too.
APEC RO-PH90 is an affordable priced, RO filtration system w/ good buyer ratings.
The Home Master TMAFC-ERP offers exceptional water taste and purity.
Buyers like it for the great-tasting water quality, but also the easy-change filters and faster flow rate.
RO System: 7-stage
Filter Lifespan: 2,000 gal. (or yearly)
Flow Rate: 75 GPD
Home Master TMAFC-ERP under sink reverse osmosis water filter works to remineralize your tap water w/ small amounts of calcium and magnesium minerals.
Buyers like having reverse osmosis water through the faucet, but buyers say it’s also easy to connect to your fridge for ice and cold water.
Installation takes only 10 – 20 minutes.
Downside is that it’s very expensive, but has top buyer reviews and rating.
The Express under sink reverse osmosis water filter system includes high-end features, but for a reasonable price.
Alkaline RO system is their most popular because of its remineralization and specialized alkaline water filters.
RO System: 10-stage
Filter Lifespan: 6 months
Flow Rate: 50 GPD
As a 10-stage alkaline RO system, the 5th-9th stages have the specialized alkaline filter which remineralizes water w/ healthy components:
calcium potassium, magnesium
Express under sink reverse osmosis water filter system gives your tap water a higher pH+ than other RO ionizers. You’ll taste a higher purity along w/ healthy benefits (thanks to the remineralization phase).
Affordable under sink reverse osmosis water filter system.
The APEC RO-PERM is a medium-priced reverse osmosis water filter system.
It uses a 5-stage process to increase water purity and tap water pH+ levels — APEC specialized system filters, but won’t eliminate the healthy minerals.
Performance: 99% of contaminants
Flow Rate: 90 GPD
Designed w/ a permeate pump the APEC RO-PERM fills much faster than normal RO systems.
Buyers also like its straight-forward installation — takes only 5 to 15 mins to set up!
Top rated under sink reverse osmosis water filter system w/ lots of positive reviews from buyers.