Aquasana Whole House Water Filtration Chloramine System-EQ-400 - The Home Depot


Model # EQ-400

Internet # 204352526

Whole House Water Filtration Chloramine System

Aquasana Whole House Water Filtration Chloramine System

This item has been discontinued.
The Home Depot no longer carries this specific product.

$1,099.00 / each


Model # EQ-400

Internet # 204352526

The EQ-400 Chloramines Whole House Filtration System includes a media upgrade designed specifically to tackle chloramines (chlorine + ammonia disinfectant) in city tap water. Get long-lasting, high performance filtration to reduce harmful water contaminants throughout your entire home for great-tasting, healthy water. Designed for municipal (city) water only; do not use if on a private well.

  • Proven to reduce harmful chloramines, an aggressive disinfectant comprised of chlorine and ammonia, commonly used in the municipal water treatment process.
  • High-potency catalytic carbon effectively reduces chloramines as well as up to 97% of chlorine and numerous other harmful contaminants including: pesticides, herbicides, rust, water soluble metals and industrial solvents
  • Provides clean, healthy, great-tasting water throughout your entire home for up to 400,000 gal. or 4-6 years
  • Does not require electricity, drainage, or back flushing and does not create waste-water
  • Stage 1 - 10 in. sediment pre-filter reduces rust, sediment and silt
  • Stage 2 - catalytic carbon in stage 2 reduces chloramines, chlorine and other chemical compounds
  • Stage 3 - large tank of catalytic carbon further reduces chemical contamination as well as pesticides, herbicides and industrial solvents
  • Stage 4 - 10 in. sub-micron post-filter reduces any remaining sediment and organic particles

Info & Guides

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Assembled Depth (in.)  27 in  Assembled Height (in.)  57 in 
Assembled Width (in.)  10.50 in  Fitting size (in.)  0.75 
Product Depth (in.)  27  Product Height (in.)  57 
Product Width (in.)  10.50 
Bypass valve  No  Color/Finish  Blue 
Filter change indicator  No  Filtration method  GAC Carbon 
Fitting style  Threaded  Hardware Included  Yes 
Installation kit included  Yes  Maximum feed water pressure (psi)  100 
Maximum feed water temperature (F)  90  Maximum filtered water flow (gallons per min.) 
Minimum feed water pressure (psi)  20  Minimum feed water temperature (F)  40 
Number of stages  Product Weight (lb.)  58 lb 
Returnable  90-Day  UV lamp  No 
Water Filtration System Type  Whole House  Water Filtration Technology  Carbon 
Warranty / Certifications
Certifications and Listings  No Certifications or Listings  Manufacturer Warranty  3 Year 


Rated 3 out of 5 by 4 reviewers.
Rated 5 out of 5 by Clean, Safe, and Pure Water for your entire home! Aquasana has built a simple and passive whole-home solution for filtering water. I think the best part about this unit is that all your household water gets passed through the filter. Showers, Sinks, Laundry, and the water line for your Ice Maker! The purifying capacity of this unit should last for 5+ years! That is amazing! What's even better is the ability for the unit to filter out medications and microbes that have the potential to exist in the pre-filtered water. Make sure you read in the installation guide. There are only a few key rules to follow, one being that you should ONLY connect to the cold water lines and another being that your water pressure should not exceed 100psi. I recommend contacting a professional plumber if you don't have the ability to know how to install for yourself. Like all Aquasana products, this unit has a wealth of online resources, install guides, how-to tips, and videos on the manufacturers website. We found a lot of great information on there. We also own the Aquasana under-the-kitchen-sink AQ-5200 system. Our entire home is an Aquasana home! March 15, 2014
Rated 3 out of 5 by Water taste improvement is significant, may be overpriced This is a large whole house filter. The chloramines upgrade means the filter is about twice the size of the regular one, but not rated for twice the volume since the chloramines removal would taper off at the end of life. Height is 4'9" so this unit must be installed in a basement, garage or large water heater closet. Connecting the unit only requires minor plumbing skills, but getting your house setup for a whole house filter is more difficult, for example it would be a waste to filter the water used by the lawn sprinklers. So you need a place to tie in to the cold water supply that has room to house this large unit. The unit comes with cheap grey PVC pipe nipples and unions. They do the job and are accepted by the plumbing code since this is the water supply line. You may think about using brass fittings and locate the unit somewhere it will not cause water damage if it leaks. To reduce pressure drop, the 3/4" reducers can be removed and the filter has 1" female connections. The filter itself will reduce the water pressure a little, but you shouldn't make it worse by reducing to 3/4" pipe. The pre and post filters are a standard filter design available anywhere, and have 3/4" connections. It's possible to just buy the replacement filter and make your own system with larger pipe and pre/post filters. I did some water taste testing, I had water that tasted like it came from a new garden hose, rubbery and had a chemical smell. I think this is the chloramines. The filter took out the taste and smell and it was much better. I can't say the water felt better or was more healthy, but it certainly changed the taste for the better. This filter is activated carbon and a mineral stone. The activated carbon part of the filter is pretty standard and there are lots of suppliers for this type of product at a somewhat lower price. The mineral part of the filter appears more unique. I would recommend this filter for someone who does not like the taste of their tap water and routinely drinks it from many taps in the house and in the shower. If you only need good tasting water from one location, Aquasana and others make under sink filter units that will do the same quality filtration, at a much lower price. August 11, 2013
Rated 1 out of 5 by Aquasana EQ-400 too small Check your main line size. This product was too small for 3,500+ sqft house with 1 1/2" main coming into house. The main line size limitations aren't listed for the EQ-400 so there was no way of knowing. Wasted water flushing system out before plumber arrived. Licensed plumber pointed out the size difference in the main line and recommended not installing it. November 5, 2013
Rated 3 out of 5 by Designed for City Water ~ Not Well-Water I will preference this by stating that I am on well water, not city water. This system is specifically designed for city provided water applications. This needs to be stated by Home Depot since most may not be familiar with the definition/application of “chloramine”. Following a lengthy phone conversation with Aquasana’s Technical Department, which appear to know their stuff, I learned how this system would be ineffective on my well-water system. Despite this, I performed an installation to properly review the system; less the ability to comment on water quality coming out of the system. The system appears to be quality, though I am not a fan of “plastic” fittings when used in an exposed application. I felt that the system, given the cost, could have included metal fittings. Like the other review, the water could become “congested” in the areas where fittings are stepped from a larger to a smaller size. May not hamper the overall performance but a noted point in the system. Having not owned a system prior to this, I am unable to rate its abilities comparatively to other systems to find it better or worse. It appears to be quality but I do not feel it is in-line with the price point. The operating cost, based on a 3-year replacement timeframe, is about $200/year + the pre/post filters (approx. $40/year). I do appreciate the fact that the system requires no power, flushing, or additives to maintain. Overall, I find the quality to be average with other systems I have looked at in the past. I cannot rate the water quality but my understanding of its abilities should result in much better water. The Technical Support I have found to be above average with a very short waiting time to access help. August 19, 2013
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