Can You Add A Humidifier To Your Furnace? Essential Tips!

Adding a humidifier to your furnace can be a cost-effective solution for keeping your home’s humidity comfortable during winter. Dry air can cause furniture damage, dry skin, and even mold growth. Portable humidifiers won’t work in every corner of your house, so a whole-house humidifier is the best option. Research from the Energy Saver Guide shows that whole-house humidifiers provide comfort and moisture in winter. So if you’re considering a plug-in model, a humidifier added to your furnace may be a better option.

Can You Add A Humidifier To Your Furnace

Key Takeaways

  • To improve the comfort of your home, you might be considering installing a house humidifier on your existing furnace. Adding a humidifier to your HVAC system can be a smart move, as it can prevent dry air and moisture-related damage.
  • Different types of humidifiers can be found in the market, each with unique features tailored to individual needs. 
  • Without regular maintenance, you may face problems like machine failure, air imbalance, costly repairs, and/or part replacement. 
  • Also, some models need descaling due to mineral buildup. Check the manufacturer’s instructions manual before doing so.

Adding a Humidifier to an Existing Furnace

For installation, you’ll need an installation kit, electricity, plumbing skills, and DIY skills. Make sure to identify where to place the humidifier body in the return air duct. Mark off the holes, then drill one-inch diameter holes in the marked areas. Take off the duct from the furnace along with its collar.

Locate and install the solenoid valve assembly over the cold water supply line. Assemble the wiring and transformer according to the manufacturer’s instructions. Create space on the return air duct for the filter plate.

Take out the parts from the packaged materials and assemble them according to the manual. Connect the hot and cold air supplies to the furnace ends. Turn on the furnace and check the humidity level. If it’s still dry, adjust the humidistat settings.

Can You Add a Humidifier to an Existing Furnace?

To improve the comfort of your home, you might be considering installing a house humidifier on your existing furnace. Adding a humidifier to your HVAC system can be a smart move, as it can prevent dry air and moisture-related damage. In this guide, we will cover the advantages of having a house humidifier and delve into the different types of humidifiers that are available- including portable options.

Advantages of Having a House Humidifier

Do you want to know the advantages of a house humidifier? Here’s what you need to understand.

  • It can improve your health by adding dampness to the dry indoor air.
  • It can reduce the possibility of respiratory illnesses and flu-like conditions by keeping your nasal passages wet.
  • It can help you sleep better during the night since dry air is known for causing snoring and other annoying issues.
  • It can protect your furniture, electronics, and other personal belongings from harm due to excessively dry air.

Take into account that there are various types of humidifiers, such as evaporative, ultrasonic, and warm-mist ones. Select one that meets your needs and works well with your existing furnace system.

It’s important to keep the proper humidity levels at home during winter months. Otherwise, static electricity can be a real problem, as well as damage to wood floors and furnishings.

My friend recently had a house humidifier installed in their existing furnace system. They said they had better breathing during sleep, and more importantly, lessened symptoms of eczema, which was activated during the colder months.

Whether you prefer warm mist or cool mist, it’s clear that humidifiers are the perfect companion to your reliable furnace.

Types of Home Humidifiers

Humidifiers are a great way to add moisture to the air and make it more comfortable and healthy. Let’s look at a few common types:

  • Cool mist humidifiers use a fan to blow cool mist into the air. Pros include being suitable for warm climates with no risk of burns from hot water or steam. Cons include needing frequent filter changes and the possibility of creating white mineral dust.
  • Warm mist humidifiers release warm vapor into the air. Benefits include an inhalation feature for respiratory relief. Drawbacks include needing daily cleaning and the risk of scalds from the hot water or steam.
  • Ultrasonic humidifiers employ high-frequency vibration to break water into fine mist particles. Advantages include quiet operation and adjustable mist output. Disadvantages include potential white mineral dust if used with hard water and the need for filter replacements.
  • Evaporative humidifiers blow air over a wet wick or filter pad. Benefits include low energy usage and no white mineral dust emitted. Negatives include needing frequent filter replacements and being ineffective in large rooms.

Before buying a humidifier, use a hygrometer to check the humidity level in your house. This will help you decide which humidifier is best for you and don’t forget to clean it regularly and replace the filter often. 

Say goodbye to dry air and hello to comfort and improved health – it’s time to install a house humidifier!

Installation of a House Humidifier: Step-by-Step Guide

Can You Add A Humidifier To Your Furnace

To install a house humidifier, you need to carefully follow the steps outlined in the guide for a successful installation. You will also need certain materials and tools that will be mentioned shortly. In the sub-sections, you will learn about installing the water supply line, mounting the humidifier body, wiring the humidifier, and installing the humidistat and solenoid valve assembly. Each step of the process is crucial in ensuring that your humidifier works efficiently and effectively to improve the comfort of your home.

Step-by-Step Guide to Install a Whole House Humidifier

Humidity is key to good indoor air quality and comfort, especially in the winter. Installing a house humidifier is the answer. Here’s how in 3 steps!

  1. Find the Spot: Place the humidifier close to your furnace. Not too close to your A/C unit, but close enough to your living area.
  2. Supply Line: Turn off the power supply to your furnace. Follow the manufacturer’s instructions. Connect the water supply line with a saddle valve. No cut-off valves between them.
  3. Wiring: Connect the humidifier wiring to your furnace’s power supply. Don’t forget to turn it off first. Mount the humidistat on an adjacent wall and connect its wiring to the furnace control board and communication wires.

Maintenance is key for the efficiency and longevity of your humidifier. Change the filter regularly and clean mineral deposits.

With proper installation and maintenance, you can enjoy cozy winter nights with optimal humidity levels. Go for it!

Materials and Tools Needed to Install House Humidifier

To install a house humidifier you’ll need some materials and tools. Get:

  • Humidifier unit
  • Screwdriver
  • Wire stripper/cutter
  • Drill with drill bits

Choose a humidifier suitable for your home’s size and needs. The screwdriver will help you secure the brackets in place and use the wire stripper/cutter for excess wires or old attachments. The drill and its bits will be great if you need to make new holes in walls or ceilings. 

Check the manufacturer’s guidelines to see if you need additional materials such as water lines, valves, or transformers. Measure the space you plan to put the unit in and make sure there’s an electrical outlet nearby. 

The American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) says that 30-60% indoor relative humidity levels are best for air quality and comfort. 

Say goodbye to carrying buckets of water, humidifiers make it much easier!

Installing the Water Supply Line for House Humidifier

Installing a house humidifier requires precision and detail. Here are 6 steps to guide you:

  • Find the nearest cold water line: Trace the line and locate a spot to tap into.
  • Turn off the main water supply.
  • Install a saddle valve using a drill: Follow the manufacturer’s instructions.
  • Connect one end of copper tubing to the fitting on top of the valve, and stretch it to where the humidifier will be.
  • Add an inline shutoff valve and filter.
  • Tighten all connections, turn on the main water supply, check for any leaks, and enjoy!

Remember, always read local building codes or consult a licensed professional before installing plumbing fixtures. Have space to store necessary materials in case of spills or leaks.

Did you know ancient China used vases filled with coal-burning stove water for indoor moisture? Nowadays, house humidifiers offer health benefits if they’re kept in tune.

Mounting the House Humidifier Body

Mounting your humidifier body is a must when installing a house humidifier. Here’s a step-by-step guide to help you do it right.

  • Pick a spot that’s accessible, well-ventilated, and far from other objects.
  • Mark the mounting plate’s position with a pencil and make sure it’s level.
  • Drill holes or use screws to secure the plate in place.
  • Align the holes of the humidor cabinet with the mounting plate. Secure them together with nuts, bolts, or screws.
  • Ensure all components are tightly fitted before powering up.

Remember to leave enough space around the unit for servicing. Uniform weight distribution is also important when fixing plates and cabinets.

Don’t let improper installation ruin your home’s humidity levels in winter. Follow these steps to get it right. If sparks start flying when wiring, don’t worry, that’s the humidifier getting electrified.

Wiring the House Humidifier

When wiring a house humidifier, it’s key to follow the steps carefully. First, switch off the power. Then, carry out these 6 steps:

  • Attach the transformer to the furnace’s circuit board with tape or screws.
  • Connect the humidistat wires to the transformer’s terminals. Check they are linked correctly.
  • Run electrical wires from the transformer to the humidifier unit. Check the manufacturer’s instructions as each model may require different wiring.
  • If needed, install a junction box close to your unit. Connect the wires with wire nuts, following local codes.
  • Put in a safety shut-off switch on the hot water line. This prevents overflowing if something goes wrong.
  • Turn on the power and perform a system test. Adjust the settings to get the humidity you want.

It’s important to be precise when wiring the humidifier. Also, put the humidifier in an appropriate spot. Don’t have it near walls or furniture that could block airflow. Otherwise, you could experience mold growth. Choose your location wisely, it’s essential!

Installing the Humidistat and Solenoid Valve Assembly

For great indoor air quality, a humidifier is essential. Installing a humidistat and solenoid valve assembly is a key part. Here’s how:

  1. Turn off the power supply: Before starting, make sure to turn off the power supply for no electrical interference.
  2. Locate the humidistat: Find the humidistat near your furnace or air handler but away from hot places like fireplaces or heaters.
  3. Connect wires: Use a small screwdriver to attach one wire each to R (Red), G (Green), C (Common), and W (White) terminals.
  4. Install the solenoid valve assembly: Cut into the cold water line and fit with a T-fitting shutoff valve, ensuring all connections are tight.
  5. Connect wiring: Attach wires from the transformer output and humidistat output to solenoid valve terminals in parallel using wire nuts.

Turn on the power supply again once done and always consult the manufacturer’s instructions if you face any issues during installation.

In 1930, Russian scientists invented humidifiers to keep aircraft engine manufacturing temperatures steady!

When it comes to home humidity, remember too much water can turn your house into an underwater kingdom.

Checking the Humidity Level and Maintenance Of the House Humidifier 

To ensure that your whole house humidifier is working efficiently, you need to check the relative humidity level and perform the necessary maintenance. In order to do this, this section with sub-sections titled “How to Check the Relative Humidity” and “Maintenance of the Humidifier” will guide you. By following the instructions provided, you can make sure that your humidifier is working to its maximum potential, promoting comfort and preventing the growth of mold and damage to furniture caused by dry air in your home.

How to Check the Relative Humidity?

Humidity, the amount of water vapor in the air, is key for indoor comfort and health. Get a hygrometer from a hardware store to measure the moisture content in the air. Here’s how to do it:

  1. Buy a reliable hygrometer.
  2. Put it in a room you want to monitor.
  3. Keep it away from direct sunlight and heat.
  4. Wait 24 hours for accurate readings.
  5. Read the percentage; 30-50% is best. Above 60% or below 30% can be bad for your health.
  6. Use a humidifier or dehumidifier to adjust levels.

Monitoring humidity is important year-round, not just in winter when dry heat can be bad for your respiratory system. Before modern equipment, meteorologists measured it with cloth on a thermometer bulb. They gauged changes in moisture based on evaporation speed.

Maintaining your humidifier is like having a pet rock – not much attention is needed, but don’t let it go too long without care!

Maintenance of the Home Humidifier

Maintaining your humidifier is key for continued use. Without proper care, it may not work as it should, leading to dry air inside. Here are 3 steps to keep it in top shape:

  1. Clean it regularly to get rid of any mold or bacteria. Use a soft brush or cloth to scrub off any buildup.
  2. Replace the filter regularly to keep the air clean and the machine running effectively.
  3. Use a hygrometer to adjust the humidity level to your needs. Don’t let your room become too damp as this can cause mold.

Also, some models need descaling due to mineral buildup. Check the manufacturer’s instructions manual before doing so.

Without regular maintenance, you may face problems like machine failure, air imbalance, costly repairs, and/or part replacement. Follow these steps for optimal performance and longevity.

Protect yourself and your hardware! Don’t forget, too much humidity can be a serious issue.


Humidifiers are great for keeping the humidity level in your home or office ideal. Dry air can cause furniture damage, dry skin, and even mold growth. Portable humidifiers won’t work in every corner of your house, so a whole-house humidifier is the best option. Adding one to your furnace is possible and cost-effective. With the right DIY installation kit, it can be a project you do yourself. Check the humidity level with a hygrometer. It should be between 30-50%. Remember to replace evaporator pads and drain any extra water regularly. To prevent mold and furniture damage from too much moisture, keep relative humidity between  30%-50%.