NH Tap Mainframe™ Whole House Water Filtration System

The NH Tap Mainframe™ is a superior Whole House Water Filtration System because it removes all contaminants from your city water and provides the safest, purest water for you and your loved ones.

See if you qualify for a no-cost PFAS Filtration System.

Learn more about the program →

Water Expert Keith

Need help?

Talk or chat with our water expert Keith.

5 Year Warranty on Parts & Labor

Professional Installation

Professional Installation

Unmatched Value

Unmatched Value, + Financing Options

Independent Lab-Tested Results

Independent Lab-Tested Results

Benefits of The Whole-House Water Filtration System

Reinvent your home’s everyday essentials with the purest water.

Healthy water for drinking, cooking, and cleaning.

Healthy water for drinking, cooking, and cleaning.

Softer, toxin-free laundry.

Softer, toxin-free laundry.

Bathroom essentials without any chemicals.

Bathroom essentials without any chemicals.

More functional and dependable appliances.

More functional and dependable appliances.

Intelligent whole home water purification with 3-stage filtration technology.

The NH Tap MainFrame Whole House Water Filtration System automatically captures chemicals and metals using intelligent purification. Using 3-stage filtration technology, our product controls each contaminant. A sealed design equips the system to restrain toxins, keeping them from bypassing the filter and going into your home environment. The result is purified water delivered throughout your home.

Specifically designed for your water

Specifically designed for your water.

By testing water samples and analyzing data from numerous 3rd-party sources, the NH Tap Mainframe Whole House Water Filtration System is able to create up-to-date water quality profiles for individual New Hampshire towns and cities. This ensures our systems are tailored to your home’s specific water needs.

Let’s find out what’s in your water.

Superior Water Filtration

Superior filtration technology.

As the impurities in tap water meet the filtration materials, an elemental reaction occurs, giving you clean water. Our system’s technology causes impurities to bond with the filtration media, trapping and destroying them before they can be circulated into the home.

Purified water does not harm your health with toxic chemicals like PFOA, chlorine, or heavy-metal lead. This is the safest, most cost-efficient, and effective way to purify water on the market.

Longer lifespan, simple service.

Longer lifespan, simple service.

We have complete oversight of our production process, giving you a superior product that outperforms and outlasts the generic filters commonly installed by most plumbing contractors and well service companies. Installing a NH Tap Mainframe Whole House Water Filtration System allows you and your family to enjoy healthy drinking water and hot showers with absolute peace-of-mind for years to come.

We offer a 5-year warranty to back our incredible whole house water filtration systems and can provide regular maintenance service to help your unit last a lifetime!

Measurements & Dimensions

Water Filter Tank

12”W x 58”H
175 lbs

Sediment Filter

6”W x 14”H

Chlorine in New Hampshire Water


The EPA has approved trace amounts of chlorine in your water — and it’s used in municipal water purification — but this chemical can cause dry skin and other digestive issues.

Learn more about chlorine in New Hampshire water

Heavy Metal Lead in New Hampshire Water

Heavy Metal Lead

Small doses can harm your body and stunt children’s development. If your home was built before 1986, you may have lead pipes that are passing trace amounts of the toxin into your home’s water.

Learn more about lead in New Hampshire water

PFAS and PFOA in New Hampshire Water


New Hampshire has many known issues with PFAs in city drinking water; this chemical causes harm to reproductive development as well as the liver, kidney, and immune function.

Learn more about PFAS and PFOA in New Hampshire water

Trace Pharmaceuticals in New Hampshire Water

Trace Pharmaceuticals

Pharmaceuticals enter your drinking water through wastewater, industrial, and agricultural runoff, sewage sludge, overflows, animal feedlots, and more. More research needs to be done on the health effects of these contaminants.

Learn more about pharmaceuticals in New Hampshire water

Hard Water in New Hampshire Water

Hard Water*

Hard water won’t hurt you, but you’ll know if you have it. From dry skin to cloudy glasses and an excess of soap scum, hard water creates everyday irritations that you can eliminate. *Requires an additional custom filter.

Learn more about hard water in New Hampshire water

Each NH Tap Mainframe is tailored to treat common contaminants found in New Hampshire public water.

The question is not whether your municipal water is contaminated. But rather just how bad is it, and what will you do about it?

In the past, homeowners assumed that because they were on municipal water, their water was clean—or at least clean enough. However, new research continues to find that treated water traveling through antiquated public infrastructure is often teeming with heavy metals, industrial chemicals, and natural contaminants. The only immediate solution is to remove contaminants at the individual home level.

Schedule Your Free Water Test Today

Life with the NH Tap MainFrame Whole House Water Filtration System

We make shopping for a whole house water filtration system easy.

Whether you’ve been bringing in bottled water or drinking your home’s water without knowing the potential chemicals that are in it, water should not be an added stressor in your life. Here’s a quick look at how NH Tap provides a superior product that will enhance your life and give you quality service for years to come.

NH Tap MainFrameOnline Filtration CompanyBox Store
Filtration tailored to your water's chemical makeup
Reduces all detectable PFAS
Service schedule
Get Pricing

Kind words from our customers.

Amherst, New Hampshire Water Filtration System Install

Keri Siciliano

Amherst, New Hampshire

“I hired Keith and the team from NH Tap to install my water filtration system and I could not be happier! The installation was absolute perfection, done with care and consideration. It is wonderful to see a company take such pride in their work. Keith, Nate and Justin were helpful, and respectful... overall a great pleasure to work with! I've already noticed a difference in my water taste and feel, and I am so happy that we invested the money into this top notch system! I highly recommend using NH Tap, they will deliver excellent results.”

Exeter, New Hampshire Water Filtration System Install

John Miller

Exeter, New Hampshire

“I had NH Tap install an entire home water purification system 2 months ago, and it was one of the best investments I ever made. I continue to smile whenever I get a glass of drinking water directly from my home tap, and it is delicious. NH Tap provided excellent service, explained all my options in detail, showed me the factual information about my town's water system, and professionally installed the system with the highest of quality. I highly recommend NH Tap without reservation, and I look forward to calling them in 5 years to replace the carbon filter system.”

Concord, New Hampshire Water Filtration System Install

Brian Perry

Concord, New Hampshire

“Keith, Nate and the team at NH Tap did an incredible job on our system! They replaced our well tank and replaced our old, outdated water filtration system with a new, state -of-the-art tank & system that we love! We are already seeing and tasting better water from our well thanks to NH Tap. Their installation was flawless and well-organized. Nate and his team were very professional and were a pleasure to have working in our 1779 farmhouse. They left everything spotless! We would highly recommend NH Tap based on service, price and over-all professionalism. My wife and I are very satisfied with the whole experience!”

Merrimack, New Hampshire Water Filtration System Install

Jim Geer

Merrimack, New Hampshire

“NH Tap was extremely knowledgeable about the water issues in our town. They were focused on giving us the best solution to give us the cleanest water. The whole process from initial consultation to installation was very easy and the process was well explained. The end results were exactly what we were looking for, clean water with no chemicals. I highly recommend NH Tap.”

All your questions answered.

Because municipalities are required to publish regular water quality reports, NH Tap is able to gain a lot of information about any contaminants that may be in your water—before we step foot in your home. We may be able to provide you with ballpark pricing over the phone. However, because the plumbing and floorplan of every home is different we do need to inspect the home to provide an accurate quote. An in-home visit will only take a half-hour and we can work around your schedule. We’ll have a no-obligation quote to you within 24-hours.

Our turnaround time is 1 - 3 weeks from consultation to installation.

Your system should last a lifetime. But your filtration media will last up to 5 years and then will need to be replaced. We provide a scheduled service that lets you put your water on auto-pilot!

Yes. We offer easy-term financing with zero down & low monthly payments. Contact us today for a quote!

A whole house water filtration system removes both natural and treatment byproducts from your local city water with filtration media. Rather than filtering just a single faucet like a Reverse Osmosis System, a whole home water filtration system delivers purified water throughout your entire home.

There are various options and quality factors that will impact the cost of a water filtration system. The average price for a countertop or under sink system runs $60–$2000 installed. Whole-home filtration systems vary from $2,000 to $7,000 installed, but you will be getting clean water at every faucet. The primary variables on cost include the types of contamination affecting your water, the level of contamination, and the complexity of the installation itself.

The best water filtration system for you depends on your lifestyle, budget, and water quality. Primarily there are Reverse Osmosis (RO) Systems and Whole-House Water Filtration Systems to consider—and each has it's pros and cons.

Reverse Osmosis systems are less expensive to maintain and do a great job of removing even the most challenging of contaminants. However they do have drawbacks—RO systems only filter one dedicated drinking water faucet and can remove beneficial minerals along with the heavy metals, pesticides and herbicides, chemicals, and hormones found in water.

Whenever feasible, we prefer the Whole House Filtration System because it provides fresh water for bathing, cooking, and cleaning. Despite a higher upfront cost, Whole House Filtration systems have longer maintenance intervals while providing a holistic water solution for your home or business.

There are typically two separate filters to consider when maintaining your NH Tap whole home water filtration system: the sediment filter and the filtration media tank.

The sediment filter is the first inline from your home water main and has a blue canister with a cartridge inside. These cartridges should be replaced every 1 to 3 months. Replacing this cartridge is a simple task, but it is important to keep up with these as a clogged sediment filter can reduce or completely stop water flow.

Maintaining your filtration media tank is much simpler. Your NH Tap whole house water filtration system has automatic regeneration cycles that can be scheduled specifically to coordinate your water usage and lifestyle. These ""re-gen"" cycles greatly extend the lifecycle of the filtration media versus older or lower quality systems. Eventually, your filtration media will need to be replaced (usually within 2–5 years depending on your water use). This is a simple process of exchanging the old media tank for disposal and replacing it with a new media tank.

We recommend setting up scheduled maintenance visits so that your unit can continue working well for years to come. Once you sign up, we send out trained technicians regularly to inspect and maintain your unit, so your fresh water is always on autopilot! Enjoy peace of mind and one less thing to think about!

All NH Tap water filtration systems include professional installation in the quoted price. While a handy homeowner can install a big box store unit themselves, NH Tap whole house water filtrations are always installed by a licensed plumber to ensure quality workmanship and longevity for your system.

To install a whole house filtration system, our plumbers typically will:

  1. Choose the filtration unit's location.
  2. Turn off the building's water supply.
  3. Remove a part of the pipe near the water main shutoff valve, where you can mount the unit on the wall or floor, and remove burrs.
  4. Install the copper tees and connect them with a pipe and ball valve.
  5. Depending on the unit and whether you have a pre-filter or not, add a ball-valve on either side, dry fitting it all. Mount the units, continue the piping, hooking it up with a dry fit.
  6. Clean your copper lines with an emery cloth. Use the deburring tool to finish it. Apply flux and solder the connections.
  7. Add a grounding jumper cable if you have copper or galvanized pipes.
  8. Carefully route drain lines to avoid spilling or freezing and causing damage to the home.
  9. Remove and dispose of any old equipment.

As always when dealing with water in the home, we feel strongly that an ambitious homeowner can save money in other places, but handling the installation and maintenance of a whole-home water filtration system is best left to the pros.