How Much Does Reverse Osmosis Cost?

High-quality Reverse Osmosis (RO) can range from just under £40 for a 3-stage unit, to £550 for a countertop system, and there’s an option accommodating every budget in between.

Generally, RO is a more expensive filtration option, but it is well worth the money, as it provides purer water which translates to better-tasting food and drinks, among many other benefits.

However, before  , you must first consider the potential costs, including the system itself - but also taking into account factors like upkeep.

At Finerfilters, we are experts in all things RO, and provide systems accommodating single sinks to large-scale commercial operations.

Let’s delve into the costs in this guide, in which we’ll look at the costs of numerous different systems so that you can find the RO option for you from our online store.

How Much Does A Reverse Osmosis System Cost?

System	Initial Cost	Upkeep
Traditional	£95 - £160	~ £25 for filters every year, ~ £65 - £100 for membranes every other year
Countertop	£450 - £550	~ £100 for filters and membranes every year
Tankless	£250 - £400	~ £50 for filters every year, ~ £100 for membranes every other year
Lab	£80 - £300	~ £70 for filters every year, ~ £100 for membranes every other year
Dentistry	£80 - £301	~ £70 for filters every year, ~ £100 for membranes every other year
Aquarium	£40 - £300	~ £50 for filters every year, ~ £100 for membranes every other year

A domestic traditional RO system should cost under £200 pounds.

The price will typically depend on the amount of stages of filtration the product can offer.

For example, a 4-stage system in our range currently costs around £95, while a 6-stage system is just under £160. Other factors such as if it is a pumped or unpumped system can affect the price also.

Typically RO goes through 5 stages, and our 5-stage products are in the £110 to £140 price range.

As you would expect, the more stages of filtration the purer your water is at the end, so your system choice should depend on how much of a contaminant issue you have, and how pure you need your water to be.

It is also worth considering getting something other than a traditional RO system.

Countertop Reverse Osmosis Cost

A countertop RO system will likely have the largest upfront cost, due to its convenient functionality and applicability to every home.

It can cost upwards of £400, but requires little upkeep with tool-free filter replacement and a simple plug-and-play setup.

How Much Does An Under Sink Reverse Osmosis System Cost?

Much like a traditional system (and some traditional systems can be used for under the sink applications), the cost of an under sink system can depend on the number of stages of filtration that you opt for.

Expect to pay at least £100 for a high quality under sink RO system.

Specialist RO Costs

In some instances, you may need specialist RO systems, which can be more expensive.

An Ultraviolet Sterilisation System can cost between £50-£200. This advanced system will deactivate 99.99% of all bacteria and viruses if ran under the right parameters, so it is great if you have severe and varied issues with water contamination.

Similarly, Tankless RO sits in the £250 to £400 range, as they can provide purified water from a specialised tap without the need for a traditional storage tank. The water is made on demand, thanks to its large membrane capacity.

Unlike a traditional RO system which can take some time to produce and store enough pure water, water from a tankless system is available immediately.

How Much Does A Reverse Osmosis Filter Cost?

An RO replacement filter will depend on the system and can cost anywhere from £12 to £50 or more.

If you are looking to replace a membrane, then it will cost a little more, with prices ranging from around £30 to £110, depending on which system you have.

Thankfully, membranes do not need to be replaced as often as filters, and filters can last for around 6 months. Membranes should be replaced every 18-24 months to ensure optimal filtration efficiency.

Reverse Osmosis System Upkeep Costs

As mentioned, the RO system itself will cost £40 to £550 - or more if you need a bespoke system - to purchase.

You can easily set up your RO system yourself, however, if you’d rather have a specialist install it for you, you should consider the additional cost.

Then there is the cost of replacements. Buying 2 filters a year will likely cost around £50, which you will have to do every year.

Getting a new membrane every two years will likely cost around £100 (depending on the model) as well, bumping up your annual upkeep cost to around £150.

Commercial Reverse Osmosis System Cost

If you need RO for commercial purposes, such as lab work or dentistry, you need to be certain that your water is as pure as possible.

A high flow system that would be appropriate for this application will likely cost around £300, and you should also consider that you may have to replace filters, such as DI Resin, more often than usual.

Get the best deal at Finerfilters

Our customer service team has great knowledge of RO, so be sure to get in touch with us today if you are unsure what kind of system is right for you.

We will help you get the right system at the best available price, ensuring purer water that won’t break the bank.