Best Whole House Dehumidifier Buying Guide

Whole House dehumidifier Buying Guide

Dehumidifiers are devices that ease users of allergies, smells and the discomfort that come with a humid environment. These devices work to maintain the right humidity level in your environment by removing moisture from the air. While living in an environment with high humidity levels might not be life-threatening, you would have to deal with several health issues like respiratory problems and skin issues which will definitely make you miserable.

Before settling for a whole house dehumidification unit, there are several factors to consider with the most important factor being the space covered by the whole house dehumidifier. If your basement, kitchen, RV, or closet is always damp then you would have to opt for portable dehumidifiers depending on the size of the room you want the dehumidifier to cover. Whole house dehumidifiers as the name implies are meant for those who wish to dehumidify every room and space in the house. 

How Do Whole House Dehumidifiers Work

Generally, dehumidifiers work in two ways –

By refrigeration: This involves cooling of warm air sucked through a grille on one side of the dehumidifier, the moisture in the air turns back into liquid water and drips into a water tank. The cool air now free of moisture passes over a heating element and warms back up to its original temperature. The moisture free dry air is blown back into the room through another grille. Dehumidifiers which operate this way are known as compressor dehumidifiers.

By Absorption/Adsorption: This involves the removal of moisture by absorbing or adsorbing damp air into a drying material. Dehumidifiers which operate this way are known as Desiccant Dehumidifiers.

Unlike portable dehumidifiers, whole house dehumidifiers are fixed units and should be connected to the HVAC system of the house. Whole house dehumidifiers operate in the same pattern as compressor dehumidifiers although there are other types of whole house dehumidifiers you should take note.

Types Of Whole House Dehumidifiers

Compressor / Heat Pump Dehumidifiers

The operating pattern of compressor dehumidifiers has already been explained above. These dehumidifiers possess properties which work similar to those of an air conditioner although a dehumidifier is more effective at maintaining the right humidity level than an air conditioner.

Chemical Absorbent / Desiccant Dehumidifiers

The operating system of this type of whole house dehumidifier has also been explained. However, Desiccant dehumidifiers are known to consume a lot of energy and therefore not economical to use. Desiccant dehumidifiers are mostly used by industries than homeowners.

Dehumidifying Ventilators

Dehumidifying ventilators are often used in basements although they are not quite popular. These dehumidifiers have a sensor and exhaust fan. The sensor works like a humidistat and triggers the unit when the set humidity level is reached; however, they are less effective compared to other types of dehumidifiers.

Signs You Need Whole House Dehumidifier

Whole House Dehumidifiers are the most expensive models of dehumidification units and will add a little more to your energy bills during use, so before buying you should ensure you need one of such size rather than several portable dehumidification units to serve the affected rooms in your house.

Musty Odor In The Air

Mold and mildew growing on the ceilings, walls or on items in your house can leave a musty odor in the air. These organisms thrive in areas with high humidity levels and leave stains on items and places they grow on. If you spot them in more than one location in your house, then it would be best to get a whole house dehumidifier to take care of the issue all at once rather than several portable dehumidification units.

Condensation on walls on windows

If you notice fog on your windows or glass it would be a sign of high humidity levels in your home. If left unattended to, it would become a breeding ground for mold hence the need for a whole house dehumidifier.

Allergies

Another sign of a humid environment is a sudden increase in allergies. However, this sign would be reference something else, so you would need to purchase a hygrometer and measure the humidity level of your home. Humidity levels greater than 50 to 55% signal abnormally high levels of humidity, therefore you would need a dehumidifier.

Looking at the signs above you can quickly decide between purchasing whole house dehumidifiers and purchasing several portable dehumidification units. However, there are portable dehumidification units like the Keystone KSTAD70B which are able to cover large areas of 4000 – 4500 sq ft. and removes 70 pints of water from the air in 24 hours. These dehumidifiers are effective at maintaining the required humidity level within the specified space and cost way less than whole house dehumidifiers.


5 Best Whole House Dehumidifiers

1. Aprilaire 1850F 95 Pint Whole House Dehumidifier

Aprilaire 1850F Large Basement Pro Dehumidifier

The Aprilaire 1850F whole house dehumidifier is one of the most effective free-standing dehumidifiers on the market capable of removing 95 pints of water from the air in 24 hours. The 1850F has a high moisture removal rate and operates a temperature of 50 degrees to 104 degrees F.

The 1850F has most of the basic features and functionality you would find in other large freestanding whole house dehumidifiers. It is a great choice for small and midsize homes with no central air ducting as this model operates without ductwork.

The most unique features in the 1850F are the auto shutoff and restart features which turn the dehumidifier on after a power outage to ensure it runs all the time, a defrost feature which prevents frost from building up in the compressor and inhibiting the performance of the dehumidifier and a built-in humidistat that enables you to set an actual humidity level to maintain.

The 1850F is a great choice for people who don’t have HVAC systems that draw from the basement; it also operates silently despite its bulky size.

The 1850F is one of the most energy efficient dehumidification units so you shouldn’t’ be too worried about your energy bills if you want to run the dehumidifier for long periods.

Moving to its drainage system, the 1850F uses a continuous drainage system that is led by gravity which is a relief to those tired of constantly draining their dehumidifiers manually. The 1850F has a bulky size which might pose a problem however mobility is made easy with the presence of caster wheels on the base and carrying handles built into the sides.

The 1850F is built with high-quality materials which makes it durable. it also has a 5-year warranty which is 3-year longer than any portable dehumidifier you can get on the market. The 1850F is able to last and operate for longer periods than most portable dehumidification units which make it a better option for those seeking to save costs and acquire an efficient dehumidifier for their homes.

Features

  • Moisture Removal Rate: 95 pints
  • Room Coverage: 3000 to 5000 sq ft.
  • Room temperature: 41°F to 104°F
  • Drainage system: Gravity drainage
  • Humidistat: Yes
  • Auto Restart: Yes
  • Auto shut off: Yes
  • Continuous mode: Yes
  • Defrost mode: Yes
  • Weight: 70 pounds
  • Warranty: 5 Years

Pros

  • Energy efficient
  • Humidifies large areas effectively
  • Quiet during operation
  • Durable due to high-quality make

Cons

  • Bulky in size
  • No built-in pump; gravity drained

2. Aprilaire 1850 95 Pint Whole House Dehumidifier

Aprilaire 1850 95 Pint Whole House Dehumidifier

The Aprilaire 1850 is similar in capacity to the Aprilaire 1850F, but this dehumidifier operates quite differently. Aprilaire 1850 unlike the 1850F is a ducted dehumidifier and works with your central air. The 1850F is the standalone version and requires air from its own fan power to dehumidify your house effectively. However, both units are effective and efficient.

As stated above, 1850 is quite similar to the 1850F which means it has the same room coverage of about 3000 sq ft to 5000 sq ft. its functionality is quite similar; it removes about 95 pints of water from the air in 24 hours and operates within the same temperature range of 41 degrees to 104 degrees F as the 1850F.

Aprilaire 1850 has most of the basic features and functionality you would find in other large whole house dehumidifiers. Its features include auto shut off and restart features to protect the coil during colder temperatures, a defrost mode frost from building up in the compressor and inhibiting the performance of the dehumidifier and a built-in humidistat that enables you to set an actual humidity level to maintain.

It is Energy Star-rated which means you wouldn’t have to worry too much about your electricity bills when running this dehumidifier. Its external thermostat ensures that it operates at the correct humidity level and also maintains your desired humidity level. This feature reduces its energy usage as it wouldn’t have to use it fans to draw in air to check the humidity levels of your house.

Aprilaire 1850 lacks a built-in pump for drainage just like the 1850F, you would have to place the dehumidifier at a level above the floor and connect a hose to the drain port of the dehumidifier, and this allows gravity to drain the dehumidifier continuously.

Aprilaire 1850 is quite durable and has a 5-year warranty that is only valid if it is installed by a professional. It is important to take note of this as some users have complained of the dehumidifier underperforming or breaking down after 2 years. However, Aprilaire 1850 is a great whole house dehumidifier that saves cost and dehumidifies your house effectively.

Features

  • Moisture Removal Rate: 95 gallons
  • Room Coverage: 3000 to 5000 sq ft.
  • Room temperature: 41°F to 104°F
  • Drainage system: Gravity drainage
  • Humidistat: Yes
  • Auto Restart: Yes
  • Auto shut off: Yes
  • Continuous mode: Yes
  • Defrost mode: Yes
  • Weight: 70 pounds
  • Warranty: 5 Years

Pros

  • Energy efficient
  • Humidifies large areas effectively
  • Quiet during operation
  • Durable due to high-quality make

Cons

  • More expensive than the 1850F
  • Bulky in size
  • No built-in pump; gravity drained

3. AlorAir Sentinel HDi90 Dehumidifier 

AlorAir Sentinel HDi90 Dehumidifier 

The AlorAir Sentinel HDi90 might be the most powerful dehumidifier on our list and the only one with over 60% of users giving a 5-star rating on Amazon. The dehumidifier covers a space of 2600 sq ft but could easily dehumidify a space of 4000 sq ft.

The main thing that sets the HDi90 from other dehumidifiers on our list is its features. The HDi90 comes with many modern-type features which include an HGV Defrost system which allows the dehumidifier to operate at really low temperatures, epoxy coating to prevent internal corrosion and leakages, G3 air filters to trap bacteria and other harmful particles, a remote humidistat and a built-in pump.

The HDi90 removes 90 pints of water per day at AHAM conditions and is energy star-rated which indicates you wouldn’t have to worry about your energy bills when using this unit. It comes with a remote control that allows you to control and monitor the relative humidity levels no matter where you are.

If you are looking for a whole house dehumidifier that can operate at really low temperatures then the HDi90 is a perfect choice. The HDi90 would run effectively at temperatures around 330F – 1040F.

The HDi90 comes with two top handles and 4 adjustable wheels for mobility. It can be ducted or operated at a free-standing unit.

The HDi90 comes with a 5-year warranty like other whole house dehumidification units.  

Features

  • Moisture Removal Rate: 90 pints
  • Room Coverage: 2600 to 4000 sq ft.
  • Room temperature: 33°F to 104°F
  • Built-in pump: Yes
  • Ducting option: Yes
  • Humidistat: Yes
  • Auto Restart: Yes
  • Auto shut off: Yes
  • Defrost mode: Yes
  • Weight: 88 pounds
  • Warranty: 5 Years

Pros

  • Energy efficient
  • Humidifies large areas effectively
  • Remote control humidistat
  • Quiet during operation
  • Durable due to high-quality make

Cons

  • Bulky in size
  • Air filter requires frequent replacement

4. Aprilaire 1870 XL 130 Pint Whole House Dehumidifier

Aprilaire 1870 XL Whole Home Pro Dehumidifier

While we said the AlorAir HDi90 could be the most powerful dehumidifier on our list due to its efficiency and effectiveness, the Aprilaire 1870 XL tops our list when it comes to room coverage and the moisture removal rate.

The Aprilaire 1870 XL cover a space of about 3900 sq ft to 7200 sq ft which makes it the largest dehumidification unit on our list. Its functionality is built around this room coverage as it removes 130 pints of water from the air in 24 hours.

1870 XL comes with the same features you would find in most whole house dehumidifier which includes auto shut off and restart features to protect the coil during colder temperatures, a defrost mode frost from building up in the compressor and inhibiting the performance of the dehumidifier and a built-in humidistat that enables you to set an actual humidity level to maintain.

The 1870 XL is a free-standing ducted dehumidifier that works with your home’s HVAC system which means it would consume less energy during operation. However, if you require a non-ducted version with the same functionality you would go for the 1870F XL non-ducted dehumidifier.

The 1870 XL lacks a built-in pump for drainage but has the option for gravity drainage to ensure it is automatically continuously drained. The 1870 XL is durable and has a 5-year warranty like all Aprilaire dehumidification units and is energy star-rated.

Features

  • Moisture Removal Rate: 130 pints
  • Room Coverage: 3900 to 7200 sq ft.
  • Built-in pump: No
  • Ducting option: No (only for the 1870F XL)
  • Humidistat: Yes
  • Auto Restart: Yes
  • Auto shut off: Yes
  • Continuous mode: Yes
  • Defrost mode: Yes
  • Weight: 114 pounds
  • Warranty: 5 Years

Pros

  • Energy efficient
  • Humidifies large areas effectively
  • Quiet during operation
  • Durable due to high-quality make

Cons

  • Bulky in size

5. Keystone KSTAD70B Dehumidifier

Keystone KSTAD70B Dehumidifier

The Keystone KSTAD70B is the only portable dehumidifier on our list and we decided to add it for those who would not afford to purchase or run whole house dehumidifiers. However, KSTAD70B is not the best large portable dehumidifier in the market, there are options like the Frigidaire FFAD7033R1 which is more popular, trusted, more effective and efficient, but the KSTAD70B covers a space of about 4500 sq ft which makes it a great alternative to whole house dehumidifiers.

The KSTAD70B’s features include auto-restart and auto shut off features, defrost mode, a transparent water level indicator, and a full bucket alert. The KSTAD70B is also a super silent dehumidifier producing a noise level of about 56 dBA on high settings and 54 dBA on low settings making it a great choice for users who seek to use them in their bedrooms. However, some users have cited the KSTAD70B is could get a little noisy during use. It’s definitely nothing to worry about if you won’t have running all the time.

Features

  • Tank Capacity: 1.3 gallons / 10.4 pint
  • Room Coverage: 4500 sq ft.
  • Humidistat: Yes
  • Timer: Yes
  • Auto Restart: Yes
  • Auto shutoff: Yes
  • Continuous mode: Yes
  • Defrost mode: Yes
  • Weight: 40 pounds
  • Warranty: 1 Year

Pros

  • The high moisture removal rate
  • Quiet during operation
  • Weighs lesser than most 70 pint dehumidifiers

Cons

  • Low build quality
  • Lacks a top extendable handle for mobility
  • Small water tank size


Best Whole House Dehumidifier Buying Guide

There are quite a number of whole house dehumidifier brands in the market and this comprehensive guide will make it easier for you to settle for the right model to suit your needs. Our buying guide consists of several factors to consider before settling for any whole house dehumidifier.

Energy Efficiency

The EPA-issued energy star certification allows you to save costs when running your dehumidifier. Dehumidifiers with this certification are generally energy efficient and are the right options to consider.

Coverage Capacity

The coverage capacity is simply the amount of space a dehumidifier would cover. Whole house dehumidifiers are expected to cover large spaces but it is important for you to check if the dehumidifier is strong enough to dehumidify your entire house by checking the coverage capacity.

Ducted or Standalone Dehumidifier

Ducted whole house dehumidifiers would have to be integrated into your home’s HVAC system to work while standalone dehumidifiers provide their own circulation through the aid of internal fans.

The main disadvantage of standalone whole house dehumidifiers compared to ducted units is that they consume more power as they use more energy to circulate air around your house. However, if your house lacks a central air system, you would have to opt for a standalone unit.

Cost

A whole house dehumidifier would cost you anything between $1,000 to $2,000. However, the upfront payment is not the only cost you will incur when settling for a whole house dehumidifier, you’ll need to think about installation costs too.

Make sure you get a professional to install the unit as most brands would consider the warranty invalid if you do otherwise.

Features

Most whole house dehumidifiers come with the same features like auto restart and shut off features, defrost mode, and a humidistat. It is, however, important to take note of these features and the functionality to ensure that the dehumidifier operates efficiently.

Drainage

Whole house dehumidifiers would be expected to drain a lot of water daily so having a continuous drain is a must. Unlike portable dehumidifiers which come with a tank that must be drained manually, whole house dehumidifiers can be drained automatically. Some come with a built-in pump option while others require gravity for continuous drainage.

Operating Temperature Range

It is important to take note of the operating temperature range before buying. The AlorAir HDi90 operates at extremely low temperatures and has a wider operating temperature range compared to Aprilaire units on our list

Noise

The noise output is another important factor to consider as whole house dehumidifiers would be expected to run for the major part of the day. While most whole house dehumidifier brands claim that their units are quiet during operation, you should confirm by test-running the dehumidifier to know the noise output or check reviews on Amazon.

Washable filters

Purchasing a whole house dehumidifier that would require frequent filter replacement sounds like a bad investment as these filters would be quite expensive. It is important to buy a whole house dehumidifier with washable and reusable filters to save cost on a replacement.

Final Notes

Above we listed our 5 best whole house dehumidifiers their functions, moisture removal rate, and energy efficiency. We also considered reviews on Amazon and made sure we pick only the ones that had the highest positive ratings and reviews. Many whole house dehumidifiers break down within 2 years which is why you would take to your time to pick the best model from a trusted brand.


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Posted in BLOG, Dehumidifiers and tagged , , , , , , .

My name is Ryan. I have had a hard time dealing with my allergies. Happily, I found that an air purifier was effective to ease my allergy symptoms. I spent a lot of time researching the best air purifier. I know how hard it can be to find the suitable one.

During the reading period, I also read a lot about humidifiers and dehumidifiers. I learned the mechanisms behind the technologies as well as the manufacturers and organizations within the industry.

I now feel convinced that I have built a guide that shows you all you need to know about air purifiers, humidifiers, and dehumidifiers. So I came up with the idea of creating this website.

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