The Best Water Heaters Whole House | Lab Tested Products

If you buy something through our links, we may earn a commission.

Online shopping has changed the way we shop forever. There are more choices than ever, and it’s much easier to find exactly what you want and purchase it with just a few clicks. In the past, you’d have to drive from store to store until you found the brand and model you were looking for. Now, it’s as simple as visiting a site like Amazon, entering a few keywords, and choosing which type of water heaters whole house you need.

However, that convenience also means you must be smart when shopping, or else things can go wrong quickly. This is where our reviews can help. We’ll talk about the 10 best water heaters whole house on amazon in detail and explain why each one is so great. We’ll also highlight some of these products drawbacks and downsides to ensure you make an informed purchase.

#10 Choice of water heaters whole house: By Overall Editor’s Score

Best water heaters whole house Reviews: Our 10 Picks

Many of us have used a water heaters whole house at one time or another. However, while personal experiences are valuable, they seldom give a full picture of the available products on the market. Our team researched leading manufacturers and their products, looking at materials technology and taking into account the feedback from large numbers of buyers.

For our top picks to be helpful to as many people as possible, we established which were the most popular categories and then searched for the best solution within that group. This involved looking at functionality, ease of use, durability, and value for money. These aren’t necessarily direct comparisons. However, each should have a capacity appropriate to the expectations of the particular use. The results represent some of the best water heaters whole house for the widest range of needs.

No. 1
Electric Tankless Water Heater, ECOTOUCH 18kW on Demand Instant Hot Water Heater 240V, Self-Modulation Point of Use Hot Water Heater Whole House ECO180B Black
  • 【SELF MODULATION INSTANT WATER HEATER】The electric on demand tankless hot water heater ECO180B adjusts exact power input based on current flowrate and temp setting. For example, less power will be consumed by the smart water heater when you reduce water flow, thus, you get ideal temperature instead of scalding hot, which ensures comfortable experience and excellent energy efficiency. Also, optimal energy efficiency of 98% saves considerable electric charge for you.
  • 【INSTANT & SUFFICIENT HOT WATER】 With real powerful 18kW smart heating system, the tankless hot water heater electric ECO180B supplies sufficient instant and endless hot water of 120℉ or higher in seconds, no waiting for preheating nor terrible temp fluctuation during shower time any more and no worry of running out of it. Perfect companion for whole house use, including shower, sink faucets, dishwasher, washing machine, etc.
  • 【CONVENIENT USE】The electric tankless water heater 18kW comes with digital display & touch control panel so temp setting is easy job. Best of all, useful information on the screen helps you get full understanding of the working status of the 240v water heater tankless, you needn’t go through hard lesson of temp setting. Now turn on the faucet and let the smart instant hot water heater do the rest.
  • 【SAFE and DURABLE】Newly updated and applied with multiple protections, such as leakage protection, over heating protection and auto stop. Every piece electric tankless water heater ECO180B goes through strict tests to ensure 100% safety and it is listed by ETL and qualifies for UL. Inner water and electricity lines are designed to run separately so as to avoid leakage risk and scale build up. You can expect outstanding performance for years to come.
  • 【POINT of USE WATER HEATER】The sleek tankless water heater ECO180B is compact as shoes box, making it possible to install anywhere point of use to avoid waste, ideal for shower, kitchen, bar, school and hair salon. Please verify it is the right size for you: 18kW at 240V(only); dimensions 12.22" (W) x 17.25" (H) x 4.02" (D); plumbing connections :3/4" NPT. In order to install 18kW Tankless Water Heater it would requires 240V, 2X40AMP Double Pole Breaker and 2X8AWG/2 wires with Grounding.
No. 2
Titan Tankless N-210 Whole House Water Heater System
  • Provides endless hot water for your entire hoe and saves up to 50% on your hot water bill!
SaleNo. 3
3M Aqua-Pure Whole House Scale Inhibition Inline Water System AP430SS, Helps Prevent Scale Build Up On Hot Water Heaters and Boilers
  • Helps Protect Hot Water Heaters: Polyphosphates, Included In This Product, Help To Inhibit Scale Build Up In Hot Water Heaters (Both Standard (Gas Or Electric) And Tank Less Styles) And Boilers; Helps Extend The Life Of Hot Water Heaters And Hot Water Using Appliances, Pipes, And Downstream Plumbing Fixtures Such As Faucets And Shower Heads
  • High Flow Rates: 3/4 Inch Npt Inlet/Outlet Connections For Easy Installation And High Flow Rates (Rated For Up To 10 Gpm); System To Be Installed On Cold Water Line Feeding The Water Heater
  • Easy To Replace: Easy Change Out Of The 3M Aqua-Pure Ap431 Replacement Water Cartridge Makes System Maintenance Easier
  • Maintains Efficiency: By Inhibiting Scale Build Up On Heating Elements, Helps Maintain Water Heater Efficiency
SaleNo. 4
Rinnai RL94iN Non-Condensing Natural Gas Tankless Water Heater, Indoor Installation, Up to 9.8 GPM
  • Smart, Durable Design: Includes 12-, 5-, and 1-year residential guarantee and 5-, 5-, and 1-year commercial factory warranty for heat exchanger, labor, and parts, respectively; See Controlr module for WiFi control (not included)
  • Never Run Out of Hot Water with this Compact Tankless Gas Water Heater: Non-condensing tankless hot water heater from Rinnai is only the size of a small suitcase and fits in a wide variety of spaces, but provides up to 9.8 GPM (6 fixtures at once)
  • Original Design: Tankless hot water heater's Circ-Logic technology offers recirculation patterns that match your habits; For the latest in non-condensing technology that speeds up service and installation, check out our new RE180iN model
  • Find Your Rinnai: See our product guides, manuals, energy guide, warranty information, videos, and tables to find the right tankless water heater for your home; Check our Ground Water Temperature Map to see if this heater is optimal for your region
  • Professional Installation Recommended: Visit the Find a Rinnai PRO page on our website to locate a qualified technician in your area to install your tankless water heater; We do not recommend installing a water heater without a technician
No. 5
Waterdrop AP431 Whole House AP430SS Scale Inhibition Inline Water System, Scale Inhibitor, Prevent Scale Build Up On Hot Water Heaters
  • 【High Flow Rate】3/4 " NPT inlet/outlet ensures high flow rate of 10 GPM to keep stable water pressure. This scale inhibitor system can be installed on any pipeline adaptive to its interface.
  • 【Longer Lifespan】Enjoy purified water with this inline scale inhibition system. Every water cartridge can last for 6 months for regular use, which may vary based on local water quality. Please maintain this scale inhibitor system in an upright position during installation to get better inhibition effect. Be sure to install this system on a cold water supply line that supplies water to a water heater.
  • 【Energy Conservation】This scale inhibitor can protect your water heater, dishwasher, boilers, downstream plumbing fixtures like faucets and shower heads from scale buildup while improving the efficiency of electrical appliances, and extending their life.
  • 【Efficient Scale Inhibition】Food-grade polyphosphates, included in the Waterdrop scale inhibitor, can fundamentally inhibit scale formation to provide healthy water for you. This is a highlight different from conventional filters.
  • Please NOTE, Waterdrop is an independent brand. The model name of this product is WD-W65.
No. 6
MAREY 4.2 GPM, 100,000 BTUs, Whole House solution, Digital Display, Outdoor Propane Gas Tankless Water Heater, Silver
  • Maximum of 4.2 Gal. per minute for a perfect outdoor shower at 115°F output water temperature.
  • Rated at maximum output 100,000 BTUs for endless hot water
  • CSA Certified gas regulator and hose and portable outdoor shower included
  • Unit comes with a digital display making it easy to adjust water and gas flow to your desired output temperature
  • No electricity needed: unit ignites with 2 D cell batteries. Perfect for off the grid areas, campsites, cabins or any other location where electricity is not available.
No. 7
Natural Gas Tankless Water Heater, Camplux On Demand Hot Water Heaters Whole House, 6.86 GPM , Outdoor
  • Installation Guide. We recommend that all installations must in accordance with the local building and plumbing codes of the installation location, install the hot water heater by a licensed professional plumber.
  • Considerate Customer Service. Here at Camplux, customer service is everything! We offer 24 shift hours customer service make the customer experience easy and fast through our live chat, phone support & our online helpdesk. Have a question? Give us a call at (844) 538-7475.
  • Instant Hot Tankless Water Heater. Camplux advanced 6.86 GPM high capacity natural gas tankless water heater delivers 6.86 gallons per minute of on-demand endless hot water. It is suitable for 3-4 outlet points, which can satisfy whole family.
  • Easy Installation. It won't take up your indoor space, keeping your home more airy and having a more comfortable living experience. The tankless water heater includes digital remote control with a 3.3 feet cable for convenient flow control.
  • Saving Energy & Money. Maximum power output 180,000btu/hour, Camplux natural gas tankless water heater only activates with max energy factor of 0.82 for natural gas when use.Low NOx emission levels, average 9.5ppm for environmental protection.
No. 8
Tankless Water Heater Electric 27kW 240 Volt, thermomate On Demand Instant Endless Hot Water Heater, Digital Temperature Display for Residential Whole House Shower, 114A GRAY
  • [Stable Water Temperature] - Auto adjusting energy consumption basing on income water temperature and flow, ensuring maximum efficiency, continuous stable temperature and optimal power usage. Digital temperature display allowing adjustment in 1° increment from 80°F to 140°F. Heating element separated from water tube significantly reducing scale, corrosion and mineral buildup on the element, achieving better performance and low maintenance.
  • NOTE - Make sure this water heater is the correct size for your hot water need: 27kW at 240V draw max 114Amp; Required breaker 3 x Double-POLE 40AMP; Wire gauge 3 x 8AWG; Unit size 17.12" x 13.12" x 3.12"; Water connection 3/4" NPT. 2-year limite warranty and 24/7 customer support services.
  • [Easy Installation & Safety Protection] - ETL certified with overheating protection, auto stop heating when detecting no water, quality workmanship for leakage protection
  • [Self-modulating Power] - Self-modulating technology regulating the amount of energy required to heat water only when you need it with 99.8% efficient, saving up to 60% on water heating cost comparing to traditional tank water heater. Wall mounted compact size with no water tank, convenient for any spaces, saving floor space and fitting into tight spaces.
  • [Instant Unlimited Hot Water] - REQUIRE 3 SET x Double-pole 40AMP Breakers to Achieve 240V for this On demand tankless electric water heater, providing hot water in 3 seconds when you need it and as long as you need, eliminating wait time, never run out of hot water again and No More cold shower. Flow Rate 5.27GPM @35°F Rise
SaleNo. 9
DuPont WFPF13003B Universal Whole House 15,000-Gallon Water Filtration System, Blue, Old Version
  • Improves Clarity and Taste of Incoming Water, Also Protects At The Kitchen Tap
  • Filters Up To 15,000-Gallon For Home or Office
  • 3-Year Limited Warranty.
  • Standard System has 3/4 in. inlets and outlets.
  • Features Universal 500 Series Poly Block Cartridge
No. 10
MAREY 4.2 GPM, 105,800 BTUs, Whole House solution, Digital Display, Outdoor Natural Gas Tankless Water Heater, Silver
  • No electricity needed: unit ignites with 2 D cell batteries. Perfect for off the grid areas, campsites, cabins or any other location where electricity is not available.
  • Rated at maximum output 105,800 BTUs for endless hot water
  • Maximum of 4.2 Gal. per minute for a perfect outdoor shower at 115°F output water temperature.
  • Unit comes with a digital display making it easy to adjust water and gas flow to your desired output temperature
  • Portable outdoor shower included

Last update on 2022-10-19 / Affiliate links / Images from Amazon Product Advertising API

What to Consider When Choosing the Best water heaters whole house

Buying a water heaters whole house can be a complicated process. There are many things to consider, and you may be overwhelmed by the options. While there’s no surefire way to guarantee that you’ll buy the right product every time, some things can help guide you through this maze. The following tips will help you choose the best water heaters whole house.

Here are some questions to ask before buying anything online:

Is the product being sold by a reputable company? A company that has been around for years and has a good reputation is more likely to provide quality products.

Do I really need this product? Ask yourself if you need this water heaters whole house or if it’s just something that sounds nice. It may seem like a great idea to purchase something cheaper than its retail price, but it might be better not to buy it at all if you don’t need it.

Is the item sold through Amazon? If so, then it’s likely that Amazon will have user reviews on this product. You can use these reviews to determine whether or not the water heaters whole house is worth buying.

How much does shipping cost? Many online retailers offer free shipping when you buy certain items, so consider this when comparing prices between different online stores.

Fits your needs and wants perfectly! If you have special needs or desires for this water heaters whole house, make sure that your chosen product will meet them before making your purchase!

Know your needs

Before you begin shopping, make a list of all the features that are important to you in a water heaters whole houset. This will help narrow your search and prevent you from getting distracted by features that don’t matter to you. For example, what matters most if you’re buying a water heaters whole house? Does it need to be efficient? Easy to use? Cheap? Durable? Safe? Knowing what’s most important will help make narrowing down your choices easier.

Research online reviews

Reviews can be a great resource when choosing a water heaters whole house because they provide information about each product’s good and bad aspects. Reviews are written by people who have used the product, giving an honest perspective on what works well and doesn’t work so well for everyday use. Some websites even let users rate products based on different criteria such as price or quality – this helps narrow your choices even more!

Look for a warranty

Warranties are a great way to ensure that your product will last for years. A good warranty will cover wear and tear, breakage and other issues arising from normal use. If you want your water heaters whole house to last for years, look for one with a good warranty.

Don’t forget to read the warranty terms and conditions! Warranties can often be misleading and difficult to understand, so read through them thoroughly before making a purchase. If it’s too confusing or you have any questions, contact customer service or look online for reputable reviews of other people’s experiences with that product.

Compare Prices

When comparing prices, it’s important to remember that you get what you pay for. Cheap products may seem like a good deal initially, but they often break down quickly and don’t last long. If you want your water heaters whole house to last for years, look for one with a good warranty and high-quality materials.

Price is important but not the only factor to consider when buying a water heaters whole house. Look at each product’s different features and options and compare them against your needs. If you’re unsure about any of these things, contact customer service or read online reviews from other customers who have purchased that product before making your decision.

Ease of Use

The best water heaters whole houses are easy to use and will provide you with the most benefit for your money. You should be able to put it together quickly and easily and operate it without much effort or difficulty. If you have questions about how to use the product, contact customer service or read online reviews from other customers who have purchased that product before making your decision.


Most water heaters whole houses will have the same basic functionality, but you should be looking for something that offers extra features. These extra features can help you get more from your water heaters whole house and make it easier to use.

For example, many water heaters whole houses come with extra attachments or accessories so that you can use them for more than just one thing. If you want a product with multiple uses or functions and doesn’t just do one thing well, look into these products before making your final decision.

What People Asked About water heaters whole house?

Is water heaters whole house worth the extra money?

This is a great question. The best water heaters whole house, in my opinion, is the one that works for you. If it works for you, then it’s worth the extra money. However, there are some situations where I would say that a water heaters whole house is worth the extra money. If you’re planning to use your water heaters whole house regularly and for many years, it’s probably worth investing in one that will last longer than average. Also, if you have a specific purpose for your water heaters whole house, getting one specifically made for that purpose may be worth the extra money.

Are water heaters whole house worth it?

The answer to this question is yes, water heaters whole house is worth it. There are many reasons you should purchase water heaters whole house and use them. Buying a water heaters whole house will make your life easier. If you buy a high-quality one, you won’t have to worry about anything going wrong with your water heaters whole house. If you’re unsure whether or not to buy a water heaters whole house, it’s best to get one. You will never regret buying a water heaters whole house.

How do I know if my water heaters whole house is strong enough?

The strength of a water heaters whole house is determined by its material. If you don’t know the strength of your water heaters whole house, then you can test it to determine its strength. This way, you’ll know for sure if it will be able to withstand everyday use or if it will break down easily. You can also check what users say about the product by reading their reviews and comments. If they say that the water heaters whole house is strong, it probably is.

Is it worth buying a water heaters whole house?

It depends on what you want to use it for. If you’re looking for a water heaters whole house that can provide you with the best features and benefits, then yes! The water heaters whole house is worth buying. It has high-end specifications, so expect nothing but the best. Moreover, it also provides a lot of value for your money. This is because it provides you with many features which will make your life easier.

Is the water heaters whole house easy to use?

Yes, this water heaters whole house is very easy to use as it has an instruction manual explaining how to use the water heaters whole house properly. The instructions are written in simple language so that anyone can easily understand them without any trouble. In addition, there are also videos available online showing people how to use their water heaters whole house. These videos have been created by professionals who know exactly what they are doing when they train others so they can help them get started with using their water heaters whole house as soon as possible after purchasing it.

How long do water heaters whole house last?

The best water heaters whole house can last for a very long time. However, this can vary greatly depending on the quality of materials and construction. If you want to make sure that your water heaters whole house lasts as long as possible, it is important that you take good care of it. You should also avoid storing water heaters whole house with other objects that might damage them.

The Verdict

Suppose you have made it this far; congratulations! We hope we’ve provided you with some buying guidance and in-detail reviews of the top 10 best water heaters whole house. The most important part of concluding the review is to give you the final recommendation on which of these products is the best. So which one is it? Which one rounded out our top ten list? If you’re still wondering where to find the best ten products, I think it’s safe to say they are all great.

However, we think that if you were going to get only one of these products, the One product name that we reviewed would be a good choice. Of course, each product is very different from the others in many cases, so your choice may vary depending on your needs.


If you buy something through our links, we may earn a commission.

Leave a Comment