The Difference between Whole Home and Under-Sink Water Filters
The Difference between Whole Home and Under-Sink Water Filters
When someone is new to both whole home water filtration and under-sink filters, they often ask the same question.
Many Florida homeowners, when they start researching water filters for their house, come across two main types of systems. The more they look into it, the more confusing it can get.
A whole home water filtration system and an under-sink water filter both clean your water, but they operate on very different levels.
Here’s a clear breakdown of the differences between these two water filtration systems.
Whole Home Water Filtration System (a.k.a. Whole-House Filter)
This one filters all the water that enters your home.
It’s installed where your main water line connects, so every tap, shower, and appliance gets clean water and not just your kitchen faucet.
Here’s what that means in real life:
- Your
showers feel better (no chlorine smell or harsh water).
- Laundry looks cleaner because the water has fewer minerals.
- Appliances like washing machines, dishwashers, and water heaters last longer since they’re not getting clogged by sediment.
Under-Sink Water Filter
This one’s simpler. It goes under your kitchen sink and filters water only from that specific faucet.
It’s great if you just want clean drinking and cooking water. Installation is easy, and it’s cheaper than a whole-house system.
But remember:
- The rest of your house still uses unfiltered water.
- It won’t help with hard water stains, rusty taps, or shower smells.
Benefits of a Whole Home Water Filtration System
Clean Water from Every Tap
You don’t have to think about which faucet has filtered water. The whole system cleans everything that enters your house. Shower, kitchen, bathroom, washing machine, all of it gets treated water.
Better Skin and Hair
If you’ve ever had dry or itchy skin after a shower, it’s usually the chlorine or hardness in tap water. A whole home filter removes those, and you can genuinely feel the difference after a week.
Appliances Last Longer
Dishwashers, washing machines, even your water heater benefit from it because there’s no buildup or sediment running through them. It saves a lot on long-term maintenance.
Benefits of an Under-Sink Water Filter
Targeted Filtration Where You Need It Most
Perfect if you only care about drinking and cooking water. It filters just one tap, so it’s simple and cost-effective.
Easy to Install and Maintain
You can install it yourself under the kitchen sink without needing a plumber. Replacing filters is quick, too.
Compact and Convenient
It doesn’t take much space. Under-sink water filter sits under your sink quietly doing its job; no need to touch the plumbing for the whole house.
Which One Should You Get?
It really depends on what you need.
If you just want better-tasting water from one tap, go for an under-sink filter.
If you’re tired of buildup, dull laundry, or dry skin after showers, get a whole home water filtration system.
You’ll feel the difference right away, especially in areas where tap water has high chlorine or mineral content.
Frequently Asked Questions
Is a whole home water filtration system worth it?
Yes. It provides clean water from every tap, protects appliances, and improves overall water quality throughout your home.
How often should I replace the filters in a whole home water filtration system?
Most filters last between 6 to 12 months, depending on your water source and usage. Always check the manufacturer’s recommendation.
Can I install a whole home water filtration system myself?
It is best to hire a professional. Installation involves connecting the system to your main water line, which requires proper tools and plumbing experience.








