A whole house humidifier is one of the best investments that you can make for your home.

It makes the air in the room moist and reduces the spreading of bacteria and viruses. If your family suffers from respiratory allergies, it is advisable to get a good humidifier to manage the symptoms.

The whole house humidifier cost can be as high as $1,000 (depending on the quality and brand of product you choose). That being said, the average cost of a humidifier, when installed by a specialist, is around $700.

For example, buying a decent humidifier will cost you around $400. However, you have to pay for installation, and depending on where you live, the cost to install a whole house humidifier can be $70 per hour.


  1. Type of Humidifier

Humidifiers come in different types and styles. You can get low-end humidifiers for under $100 and high-end ones for over $1,000. The trick is to understand the options available and make the right choice. Here are the different types of humidifiers:

Drum humidifiers – these are the cheapest humidifiers we have on the market. You can get a drum humidifier for under $300. These humidifiers work by using a rotating pad that absorbs water from the drum’s reservoir. Installing a drum humidifier is easy since no complex installation process is required. Unfortunately, these humidifiers are prone to mold infestation because of the stagnant water in the reservoir.

Flow-through humidifiers – you can get a flow-through humidifier for under $500 and the installation will cost you around $400 depending on where you live. As the name suggests, these humidifiers work by water flowing through a pad when the valve opens. Unlike drum humidifiers, they use more water but they are more efficient.

Steam humidifiers – steam humidifiers are expensive and can cost as much as $1,300. The installation cost is also high and can go up to $900. These humidifiers have electric probes that heat water to release steam. The steam can be released into the HVAC duct system or you can create a separate duct system for the humidifier. 

Spray mist humidifiers – these are the simplest humidifiers on the market. You can get them for under $200 and they don’t require professional installation. Spray mist humidifiers are ideal for small homes where the humidity requirement is low.

  1. Size of the Unit

The size of your humidifier unit will determine the cost. If you have a big home, you will need to buy a larger humidifier to satisfy your humidity needs. For instance, if you have a 1,500 sq ft home, you will need to get a 32-gallon humidifier.

Therefore, before you buy a humidifier, make sure that you do the right calculations so that you can buy the right size.

  1. The Average Whole House Humidifier Installation Cost

It is important to think about the installation cost when buying a humidifier. Depending on where you live, the installation cost can be as low as $40 or as high as $70 per hour. And it will take about five hours to finish the installation of your humidifier.

The total installation can be as high as $400 depending on the complexity of the installation. If you have to add some electric outlet or plumbing, the cost can go higher.

  1. Running Cost

Buying and installing a humidifier is not the end of it. It is also important to account for the running costs when buying a humidifier. The cost of running a humidifier can be as low as $10 or as high as $250 depending on the type of humidifier and the size of your home.

You will notice that the cost of running your humidifier reduces during winter when the weather becomes more humid.

  1. Maintenance Costs

The maintenance costs should never be ignored when buying a humidifier. Some humidifiers, like the flow-through units, need more maintenance and generally cost more.

If you want to keep the humidifier running efficiently, you have to buy replacement pads and also pay for regular duct cleaning. Mold inspection and regular repairs can also increase the overall cost.

  1. Humidistat and Humidity Gauge

Apart from buying your humidifier, you also need other gadgets like a humidistat and a humidity gauge. With a humidity gauge, you can monitor the humidity levels for the efficient running of your humidifier.

You can get a low-end humidistat for $10 or a high-end one for around $200. When buying a humidifier, remember to account for the price of a humidistat.



Certainly! Installing a whole house humidifier is a good decision. The initial process of buying and setting up the humidifier might be an expensive affair, but it is worth it.

Installing a humidifier will improve the quality of air in your home. It can reduce allergies and nose blockages as it makes the air moist. A humidifier is also a good option if you snore at night because it helps with improving air quality.


While it’s possible to do DIY humidifier installation, in some cases, you will need to hire a professional. For example, if you have a simple humidifier like a spray mist or a drum humidifier you can get away with DIY installation.

However, for high-end humidifiers, you need to hire a professional because you might need some plumbing or electrical work done. With professional installation, you have peace of mind knowing that everything is working according to plan.


Buying an expensive humidifier is not always the solution. If you have a spacious house, you need to get a big humidifier. This can influence the overall cost to install whole house humidifier units in a home and make it more expensive.

On the other hand, if you live in a small house you do not have high humidity needs so your house might not need an expensive humidifier. Remember, when buying a humidifier the main goal is to determine your needs so that you can get one that is ideal for you.


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