Furnace Basics


A furnace is a necessity for homes during the winter. The heat that a furnace brings can be comforting when it works and devastating when it doesn’t. Furnaces help to save lives by maintaining a livable temperature inside homes when winter is at it’s worse. Everyone knows the basics of what a furnace does, but how does it work? What exactly does it do? Is a furnace even necessary for your home? In this month’s blog post, those are the questions we hope to answer and more. 

How Does a Furnace Work?

There are several different types of furnaces, but the most common one is the gas furnace. It is powered by natural gas or propane in most cases. We’ll be covering how a gas furnace works. The first thing a gas furnace does is transfer gas to a burner, which then ignites it. The flames caused by the heated gas then raise the temperature of the air inside of the furnace which is then transferred through the air vents to inside the home by fans that circulate the air through the ducts. That is the basics of how a furnace works, though it is made of different components such as the flue, ductwork, gas burner, thermostat, and more. The different components help to make sure everything runs smoothly and in cases where it doesn’t, tries to provide a solid backup plan until an HVAC technician can repair it. There is also waste, or excess air and gas, that the furnace takes into account. That’s where components such as the flue come into play. The flue carries out gas that was already used to heat air outside of the home. Excess air is returned to the furnace through return ducts, which is ductwork specifically designed for the purpose of returning said air. The functions of a furnace can be difficult to understand but when in doubt, just remember; it was designed to heat up air. That’s what all the fancy components are for. 

What Does a Furnace Exactly Do?

While we know what a furnace does and how it works, we don’t know exactly what it does. If furnaces only heat air, then isn’t it just a glorified fire? Does that mean we are nothing more than cavemen? 

Yes it does. 

The thing that a furnace has most in common with a fire is that the air heated inside of it is caused by combustion. Basically, the gas that is transferred into the furnace helps to cause a small explosion that heats up the temperature of the air inside of it. That used gas is then transferred to a safer place and new gas replaces it. The cycle repeats as air is transferred into homes. That is what a furnace does; it heats up the air inside of your home by causing a small explosion. Now, it is not as simple as that, as explained above, but it sure does sound cool, right? 

Is a Furnace Even Necessary?

This is a hard question to answer as it can go both ways. Depending on where you live and the specific needs of your household, it could be a yes or no. For example, if you live in Alaska, you’re going to need a furnace or you’ll have a higher chance of dying from hypothermia. If you live in Texas, the chances of you needing a furnace is low. Whether you need a furnace or not depends on your household needs and the climate you live in. If you’re still confused on whether you need a furnace or not, ask a reliable HVAC technician. 


The basic function of a furnace is to heat a home. A gas furnace is made out of a variety of parts that allow it to successfully heat the air inside of a person’s home while making sure it is done as safely as possible. Whether you need a furnace or not in your home depends on your household’s needs. Partney Heating and Cooling has been installing and repairing furnaces for over twenty years. We are the HVAC technician experts and we can help you with any furnace issue that may come your way, no matter how tough. Call us today at 636-475-9384!

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When Should You Replace Your Ductwork


Ductwork can be expensive to replace. Even the best ductwork wears down in time. You can try and properly seal it and have it repaired time and time again, but eventually, there is a time when you have to say goodbye to your ductwork. We can help you out if you’re wondering how much your new ductwork will cost, if it’s realistic for you to replace your ductwork yet, and how to increase the longevity of your ductwork. Here at Partney Heating and Cooling, we got your back. 

How Much Does Ductwork Cost?

The cost of ductwork varies on how much feet of it is needed and the material that is used. Non-metallic materials, for example, cost less but are more prone to tear. According to thumbtack.com, the average cost of one foot of ductwork is $60 – $90. One of the most common materials for ductwork is aluminum. It’s more rigid than non-metallic materials and less likely to have mold growth. You also need to take into account installation fees. The more dangerous and or difficult conditions HVAC technicians have to work in, the more installation fees are likely to cost. 

Signs You May Need to Replace Your Ductwork:

  • Leaking Issues

If your ductwork is leaking, it likely has a tear in it. Leaking issues can be a sign that you need to replace your ductwork. If you are unable to repair the tear or your ductwork is worn out, there is not much you can do except get it replaced. 

  • A Buildup of Dust in Your Home 

It can be hard to measure the amount of dust in your home, but at some point, it becomes a noticeable problem. If all your furniture is covered in dust, your dog is covered in dust, and your vacuum cleaner is begging you for a break, it may be time to replace your ductwork. A buildup of dust in your home is a sign that something is wrong with your HVAC system. Sometimes it can be your air conditioner, but it is likely your ductwork if it was installed incorrectly or your ductwork is reaching the end of its lifespan.  

  • Noise Level Increase

If you notice that there seems to be a noise increase coming from your vents, you might need to replace your ductwork. Noise disturbances from your ductwork can also happen because of blockage. You can avoid this by cleaning out your ductwork regularly. 

  • Varying Temperatures in Different Rooms 

If you can run from one room to the other and it feels like the difference between winter and summer, you likely have a problem. While it can be nice to feel a summer breeze in your home in one of your rooms and then have a cup of hot cocoa comfortably in another room, then it is likely your HVAC system is not working up to optimal standards. Different temperatures in different rooms of your home can be a sign that your ductwork is wearing out, has tears, or there is debris blocking a section of it causing the temperatures in your home to fluctuate. 

Replacing Your Ductwork

Eventually, you can no longer put off replacing your ductwork. When it is that time, it’s important you research heating and cooling companies before letting anyone into your home. Keep in mind that if it sounds too good to be true, it probably is. Once you find a trusted heating and cooling company, such as Partney Heating and Cooling, then it is time to figure out what ductwork material will best suit your needs and your budget. Metallic materials are likely to last longer and you won’t have to worry about any mold growth, but they tend to be more expensive and rigid. Non-metallic materials don’t last as long but are more flexible than metallic materials. There is the added worry about mold growth however with non-metallic materials, and you’ll need to get your ductwork cleaned more often because of that. Replacing your ductwork can be stressful, but the important thing is that it is done correctly and then maintained. 

How to Maintain Your Ductwork; the Do’s and Don’ts


  • Have Your Ductwork Regularly Cleaned 

Having your ductwork cleaned regularly is essential for its longevity. Depending on the material your ductwork is made of and if you own any pets, you might need to have your ductwork cleaned more than other homeowners. A good rule of thumb is to have your ductwork cleaned every five years at least. 

  • Use Reliable Materials 

Your ductwork is only as good as what it is made of. Using unreliable materials will cost you more in the long run than it’s worth. Talk to your HVAC technician about what materials to use for your ductwork that will best suit your home. Do not just go with whatever is cheapest and saves you a few dollars. Your ductwork will thank you if don’t.

  • Have Trusted Professionals Install Your Ductwork 

As we covered in the “Replacing Your Ductwork” section, it’s important that you find a trusted heating and cooling company before having your ductwork installed. Once you do, ask them questions. See how long it will take the heating and cooling company to install the ductwork in your home and what materials they recommend for your needs. If they don’t answer your questions or don’t seem to know what they are doing, it might be best to look at a different heating and cooling company. 


  • Use the Cheapest Material Just Because It Is a Bargain Price 

We can not stress this enough; do not just go with the cheapest option before researching the material. Here at Partney Heating and Cooling, we like a good deal as much as anyone, but usually, they sound too good to be true for a reason. Don’t do it. 

  • Try to Install It Yourself 

While it can be beneficial to DIY some things, installing your ductwork is not one of them. Unless you are an HVAC technician, if you install your ductwork something is bound to go wrong. Duct tape can fix a lot of things, but it can not fix your ductwork. It sounds strange, we know, but trust us on this one. Just trust us. 

  • Forget About Your Ductwork 

Once you have your ductwork installed, it is crucial that you have it maintained over the years. You should have your ductwork inspected yearly, and have your ductwork cleaned regularly as mentioned in the Do’s section. Another thing you can do to maintain your ductwork is vacuum and dust regularly. 


At some point, you have to say goodbye to your ductwork. Not even the best ductwork lasts a lifetime. It’s important to know how much replacing your ductwork will cost, signs that you need to replace your ductwork, and how to take care of your ductwork so it will last as long as it can. If you need help replacing your ductwork or need to schedule a regular maintenance call, call Partney Heating and Cooling! Our number is 636-475-9384. 




Trying to figure out how your air conditioner works can be tough. One day it’s working and the next day it’s not. You mess with one little thing and suddenly boom! It no longer works. Luckily, here at Partney Heating and Cooling, we can help you out. You may be wondering, “how does my air conditioner work?” You may even be wondering what an air conditioner does. Does an air conditioner just cool air or does it do more? Is my air conditioner supposed to make that funny sound? Well, that’s what we’re here for! We’ll try to answer any questions you have about how your air conditioner works and if we don’t address the ones you were thinking of, leave us a comment below! 

What Does an Air Conditioner Do?

Air conditioners do a variety of things. Not only do they draw heat out of your house, but they filter your air to make sure the quality is up to standards. Bad quality air can lead to a number of health problems such as asthma, bronchitis, and even lung damage. Air conditioners remove moisture from the air to combat humidity. The more moisture in your air the harder your air conditioner works. More humidity in the air can lead to mold growth, dust mites, and sleep problems. Your air conditioner deals with this by taking the moisture out of the air.  


Air Conditioner

How Does an Air Conditioner Work?

Air conditioners work by drawing air in and out through a series of ductwork in your home. It acts as a filter for everything mentioned above. A click of a button, and cool rushes up to meet you. Your air conditioner takes warm air in, cools it, and then puts it back into your home. The warm air is cooled by being turned into a liquid before being converted to a gas again. You can tell your air conditioner is working by hearing the small, whirring sound it makes. If that sound is a loud one that sounds like rocks having a party inside of your ductwork, then we, unfortunately, have to inform you that’s not normal. It doesn’t matter even if it’s quite the rock party either. Alright, we’re sorry. We are the air conditioning experts, not the pun experts. We’ll stop now.

Air Conditioner 2

Common Issues

There are several common issues that can lead to your air conditioner not working the way you expect. Here are a few of them that are easy to answer and the most common ones we see:

  • Why is there no air coming out of my vents? 

It is likely your evaporator coil has frozen up. You can avoid this by changing your filter regularly. Here at Partney Heating and Cooling, we recommend you change your filters monthly. 

  • My air conditioner won’t work at all. What likely happened?

Sadly, your capacitor likely swell or blew up.  You’ll need to call an HVAC technician to fix it. The best way to avoid this is to have your air conditioner checked yearly by an HVAC technician and to change your filters regularly. Regular maintenance can solve several issues and save you thousands of dollars in the long run. 

  • My fan motor stopped turning, what do I do?

Your fan monitor likely stopped turning due to a bad capacitor. You will need to replace your capacitor and have an HVAC technician install it. Regular maintenance will help prolong the life of your capacitor. 

  • My evaporator randomly froze up, how do I fix it?

Your evaporator is likely low on Freon and you need a certified HVAC technician, such as Partney Heating and Cooling, to find the leak and fix where the leak is. You may need to replace your evaporator coil if the leak is bad enough. You should never have to replace Freon as your heating and cooling system is a closed system. 


An air conditioner does not just do one singular thing and instead does many things in order to keep your household running. A series of components helps it draw air in and release it out. Some of these components include your ductwork and vents. Most common issues can be solved by regularly maintaining your air conditioner. We hope we helped you out with this article and that you know a little more about your air conditioner now! If you have any issues, call Partney Heating and Cooling! Our number is 636-475-9384.



Replacing both your furnace and air conditioner at the same time can be costly. Both are essential expenses, and yet can be nerve-racking. Here at Partney Heating and Cooling, we can answer your questions and make the process as easy and pain free as possible.

How Much Does a Furnace Cost Alone?

  • This question is hard to answer as depending on the energy source you choose to use for your furnace, the cost can increase. Electric furnaces are usually less expensive than gas furnaces and cost less to install. However, gas furnaces are less expensive to operate.
  • Furnaces will also cost more depending on their size. If you need your furnace to heat a 3,000 square feet home for example, it’s going to cost more than it would to heat a house that is 1,500 square feet.
  • Different brands of furnaces can cost more or less. York’s furnaces have been known to cost less on average than American Standard’s.

According to Home Advisor, the average cost of an electrical furnace, including installation, is $2,615. The average cost of a gas furnace is $3,585. That is roughly a $970 difference.

How Much Does an Air Conditioner Cost Alone?


  • There are six different types of air conditioners; Central Air Conditioning Air Conditioners, Ductless Air Conditioners, Split System Air Conditioners, Hybrid Air Conditioners, Portable Air Conditioners, and Window Air Conditioners. Most people go for Central Air Conditioning Air Conditioners as they can cool homes efficiently. Each of these air conditioners are best suited for different homes and businesses, however that’s a blog post for another day.
  • Size also plays a factor in the cost of an air conditioner just like it does with a furnace. The bigger, the house, the more the air conditioner will cost.
  • Different brands also cost more or less just like with furnaces do too. Different brands suit different needs better, such as how York does Split System Air Conditioners.

The national average for air conditioners in 2019, as specified by HomeAdvisor, is $5,466. You can however, save more money if you purchase an air conditioner that suits your needs, but not your wants.

The Answer

With all that in mind, to replace an air conditioner and furnace without extra costs such as repairing pre-existing ductwork, you will most likely be spending around $8,566. This includes the average of electric and gas furnaces combined.

Do you need help finding the best air conditioner and furnace for your needs? Contact Partney Heating and Cooling, and we can help you right away!

Which One Is Best?

Trying to find the best air conditioner that can suit your needs can be overwhelming. There are six types of air conditioners and that doesn’t even get into brands! It can be overwhelming for us sometimes too, and we’re the experts. Luckily, we’re here to help you out by narrowing it down. Today, we’ll be discussing window air conditioners and central air conditioners. They are both fantastic choices, but it’s likely that one of them fits your needs better.

What Is There to Know About Central Air Conditioners?

• Central Air-Conditioners fall into two categories; Packaged Central Air Conditioners or Split-System Central Air Conditioners. A packaged Air Conditioner has everything in one container. A Split-System Air Conditioner separates the evaporator into one container while the compressor and condenser go into another.

• A central air conditioner is designed to heat a whole house, making it more efficient than window  air conditioners.

• Central air conditioners are permanent.

• As reported by Home Advisor, central air conditioners cost between $3,754 – $7,244.

What Is There to Know About Window Air Conditioners?

• While there aren’t different types of window air conditioners, there are different types of windows and knowing which type of windows and the size of your windows is crucial when selecting a window air conditioner.

• A window air conditioner is designed to heat only one room, making it far less efficient than central air conditioners.

• Window air conditioners can be temporary or permanent. When removing them, however, it’s best to have a professional do the job.

• According to Remodeling Expense, the average cost of a window air conditioner, including installation fees, is between $280.30 – $695.00.


Window air conditioners cost less than central air conditioners, but are far less efficient. They only heat one room while central air conditioners can heat a whole household. Both air conditioners are great choices for different households.

Do you need help finding the perfect air conditioner and installing it? We can help you out! Give us a call or use the contact form HERE.

Phone: 636-475-9384


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Herculaneum, MO 63048, USA.

Servicing St. Louis,  Festus, Crystal City, Herculaneum, Pevely, Imperial, Barnhart, Arnold, Desoto, Hillsboro, Jefferson County, St.Geneveive, Bloomsdale, South County & surrounding areas.

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