Trey Lewis

Hi, my name is Trey Lewis and I’m the founder and chief editor at HVAC Training Shop. My goal for this website is to help homeowners troubleshoot and maintain their home’s HVAC systems. Whether it’s changing an air filter, troubleshooting a blower motor, or just buying a new humidifier, I want to make sure that you’re covered.
AC High Pressure Switch Tripping

AC High Pressure Switch Tripping? Here’s What to Do

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Click! Did your air conditioner’s high pressure switch just trip? A tripped high pressure switch makes a loud click followed by an abrupt shutdown of your AC condensing unit. In this article, I’ll go over what you should do if your AC’s high pressure switch trips. I’ll also cover the causes of a tripping high pressure switch, and some maintenance tasks that you can perform to keep your AC’s high pressure switch from tripping in the first place.

Should You Turn Off Your Furnace in the Summer

Should You Turn Off Your Gas Furnace in the Summer?

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When summertime comes, many people say goodbye to their gas furnaces and hello to their air conditioners. But what about the proper shutdown process for your gas furnace? Is that even required? If you have an older gas furnace with a pilot light, then you should turn off the pilot light and the gas supply to the furnace.

How a Fan Coil Unit Works

How a Fan Coil Unit Works

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In this article, I’ll explain how a fan coil unit works by going over the basics of fan coil units and comparing a few different types of fan coil units.

Fan Coil Unit Versus Air Handling Unit

Fan Coil Unit Versus Air Handling Unit – What’s the Difference?

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If you’re familiar with air handling units (AHUs), you might wonder how fan coil units (FCUs) are different from them. In this article, I’ll go over the differences between air handling units and fan coil units. I’ll also provide some examples of air handling units and fan coil units, so you can get a feel for their differences in a real-world setting.

does a portable ac need water

Does a Portable AC Need Water? What You Need to Know

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In this article, I’ll go over everything you need to know about portable ACs and water. I’ll cover how portable ACs get water, and what happens when they’re full of water. I’ll also discuss what you should do if no water is coming out of your portable AC.

can portable air conditioners be recharged

Can Portable Air Conditioners Be Recharged?

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In this article, I’ll go over everything you need to know about recharging portable ACs. I’ll also discuss if you can use a recharge kit on a portable AC and how to tell if your portable AC needs recharging.

Outside AC Unit Making Noise

Outside AC Unit Making Noise? Here’s What to Do

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In this article, I’ll go over what you should do if your outside AC unit is making a noise. I’ll also go over all of the different types of sounds that an AC unit makes—so you can figure out what’s wrong with your AC no matter what type of noise it’s making.

Frozen AC Line

Frozen AC Line? Here’s What to Do

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In this article, I’ll go over what you should do if your AC line is frozen. I’ll also go over everything that causes a frozen AC line—so you’ll know what to check and how to fix your AC.

AC Freezing Up

AC Freezing Up? Here’s What to Do

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In this article, I’ll go over what you should do when your AC freezes up. I’ll also go over all of the causes of a frozen AC—so you can prevent your AC from freezing up again.

AC Float Switches

AC Float Switches – Everything You Need to Know

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In this article, I’ll go over what you need to do when your AC’s float switch trips.
I’ll also go over how an AC float switch works, and all the different types of float switches. That way you’ll be prepared for any float switch issues you come across.

Condensation on AC Lines

Condensation on AC Lines? Here’s What to Do

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In this article, I’ll go over everything that you should do if there is condensation on your AC lines. I’ll also discuss the science of condensation on AC lines—so you’ll better understand what’s causing the condensation to form in the first place.

AC Hard Start Kits

AC Hard Start Kits – Everything You Need to Know

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In this article, I’ll explain how AC hard start kits work, and the benefits of using an AC hard start kit. I’ll also go over how to tell if your AC needs a hard start kit and how to choose the correct hard start kit for your AC unit.

Furnace Blowing Cold Air

Furnace Blowing Cold Air? Here’s What to Do

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In this article, I’ll go over step-by-step instructions on what you should do if your furnace is blowing cold air. I’ll also cover the different things that you can try to fix your furnace on your own.

Furnace Making Noises

Furnace Making Noises? Here’s What to Do

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In this article, I’ll go over all the different types of noises that a furnace makes and what they mean. I’ll also go over what you should do if you hear a noise coming from your furnace.

AC Condenser Fan Motors

AC Condenser Fan Motors – What You Need to Know

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In this article, I’ll go over how to figure out if your AC condenser fan motor is bad, and how to test your AC condenser fan motor.
I’ll also discuss everything you need to know when purchasing a replacement AC condenser fan motor.

Should You Cover Your AC in the Winter

Should You Cover Your AC Unit in the Winter?

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In this article, I’ll go over why it’s usually not necessary to cover your AC in the winter.
I’ll also discuss when it’s appropriate to cover your AC and the best way to cover your AC if you need to.

Does a Dehumidifier Cool a Room

Does a Dehumidifier Cool a Room?

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In this article, I’ll go over how a dehumidifier works, and how it actually adds heat to a room. I’ll also talk about the dehumidifier cooling effect and how a dehumidifier can make a room feel cooler. Lastly, I’ll discuss some alternatives to dehumidifiers if you’re looking to cool AND dehumidify your home.

How to Clean Your Portable AC

How to Clean Your Portable Air Conditioner – 4 Simple Steps

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In this article, I’ll go over 4 easy steps that you can follow to clean out your portable air conditioner. These steps should be followed whenever you conduct periodic maintenance on your portable AC—or when you’re getting ready to store your portable AC after the cooling season is over.

How to Make Your Portable AC Colder

How to Make Your Portable AC Colder

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In this article, I’ll go over a few tips and tricks to improve the cooling from your portable AC. I’ll also go over the best installation practices that you should follow when setting up your portable AC.

How Does a Heat Pump Work in Winter?

How Does a Heat Pump Work in Winter?

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In this article, I’ll explain the details on how a heat pump works in the winter to heat your home. I’ll also discuss the pros and cons of using a heat pump in cold climates, and go over backup heating systems in heat pumps.

Heat pump freezing up

Heat Pump Freezing Up? Here’s What to Do

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In this article, I’ll go over what you need to do if your heat pump is freezing up. I’ll also explain how a heat pump’s defrost cycle works and how to manually defrost your heat pump so you can get your home warm and toasty again.

Dehumidifier Blowing Hot Air

Dehumidifier Blowing Hot Air? Here’s What to Do

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In this article, I’ll let you know what you should do when your dehumidifier is blowing excessively hot air. I’ll also discuss what temperature the air coming out of your dehumidifier should be, and why dehumidifiers blow hot air.

How Does a Desiccant Dehumidifier Work

How Does a Desiccant Dehumidifier Work?

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In this article, I’ll go over how desiccant dehumidifiers work. I’ll also discuss the different types of desiccant dehumidifiers and the pros and cons of desiccant dehumidifiers.

Can You Drink the Water From a Dehumidifier

Can You Drink the Water From a Dehumidifier?

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In this article, I’ll go over why it’s not safe to drink water from a dehumidifier.
I’ll also discuss why boiling dehumidifier water does not make it safe to drink, and what you can use the water for instead.

Can You Leave a Window Air Conditioner on 24/7?

Can You Leave a Window Air Conditioner on 24/7?

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In this article, I’ll discuss the benefits and drawbacks of running your window AC continuously. I’ll also provide some tips and tricks to keep your window AC running efficiently. You’ll be able to keep your energy bills low, and prolong the life of your AC!

How to Clean a Window AC Without Removing it

How to Clean a Window AC Without Removing it

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In this article, I’ll go over the steps and tools required to clean your window AC without removing it from your window. I’ll also go over the reasons why you should clean your window AC, and some tips and tricks to keep your window AC running in top shape.

Should a Window Air Conditioner Be Tilted

Should a Window Air Conditioner Be Tilted?

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In this article, I’ll go over everything you need to know about tilting a window air conditioner. I’ll also cover how much you need to tilt your window AC, and what you should do if your window AC is not dripping water.

Window AC leaking water Here's What to Do

Window AC Leaking Water? Here’s What to Do

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In this article, I’ll go over what you need to do if your window air conditioner is leaking water. I’ll also provide step-by-step instructions to troubleshoot a leaky air conditioner for any situation.

Window AC frozen

Window AC Frozen? Here’s What to Do

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In this article, I’ll let you know what you should do when your window AC is frozen. I’ll also go over what you should check, and what kind of settings you should use on your window AC to help keep it from freezing.

Furnace not working

Furnace Not Working? Here’s What to Do

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In this article, I’ll cover 13 things that you should check if your furnace is not working. I’ll also go over some basic troubleshooting steps if your home’s heater is not turning on.

Types of Space Heaters

5 Different Types of Space Heaters: Which Should You Choose?

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Buying a space heater is more than just knowing how much heat you need. One critically important factor is how that heat is delivered to your space.
In this article, I’ll go over 5 different types of space heaters and their pros and cons. I’ll also explain how they work, so you can determine what is best for your space.

Furnace Filter Sizes What Size Air Filter Do You Need

Furnace Filter Sizes: What Size Air Filter Do You Need?

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Choosing the right furnace filter size for your home is very important. It will help maintain your furnace’s efficiency and keep your home’s air clean.
In this article, I’ll go over how to find out what size furnace filter you need. I’ll also give you a few tips and tricks when it comes to changing your furnace’s air filter.

How to clean a humidifier

How to Clean Your Humidifier – 3 Different Ways

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Have you noticed that your humidifier just isn’t performing as well as it used to? In this article, I’ll explain three different ways to clean your humidifier. I’ll also provide helpful tips for humidifier maintenance, so your humidifier is always clean and in top shape.

The Best Air Filters for Mold Removal

The Best Air Filters for Mold Removal

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Find mold in your home? Then there’s no time to mess around. In this article, I’ll show you some of the best air filters that you can use to remove mold. I’ll also go over the steps required to remove mold from your home’s air, and how to address the causes of mold in your home.

Furnace Exhaust Vent Blocked

Furnace Exhaust Vent Blocked? Here’s What to Do

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In this article, I’ll go over what you should do if your furnace’s exhaust vent is blocked. I’ll also cover what happens if your exhaust vent is blocked, and what symptoms your furnace will exhibit with a blocked exhaust vent.