The basic principle behind air conditioning is quite simple. Air conditioners use a process of evaporating and condensing refrigerant to cool air. The refrigerant is a substance that evaporates easily and condenses just as readily. In an air conditioner, the refrigerant goes through a continuous cycle of evaporating and condensing. As it evaporates, it takes heat away from it. When it condenses, it releases that heat.
Homeowners often take their air conditioners for granted, but when they stop working properly, they may become curious about how these devices work. This is crucial for Americans like yourself since the U.S. Department of Energy noted that most homes have HVAC systems that use a significant amount of energy. In detail, three-fourths of all U.S. homes have at least one air conditioner, which consumes six percent of all energy produced! Homeowners often spend a lot of money on energy bills (a total of $29 billion) to keep their homes comfortable!
Frequently Asked Questions about HVACs
To better maintain these crucial everyday devices, here are the most asked questions about HVAC systems:
Question #1: Do I Change Indoor and Outdoor Units Together?
No, you do not need to replace your indoor unit if you are only replacing your outdoor unit. However, if your old indoor and outdoor units are the same sizes, you’ll likely see more energy savings by replacing both units simultaneously. Replacing the outdoor unit will delay the inevitable and cost you more energy bills.
When you replace only the outdoor unit, the new one will work harder than needed because the indoor unit will still be the old, less efficient model. And finally, when you replace both units simultaneously, you can take advantage of any rebates or tax credits that may be available.
The warranty will cover the entire system if you buy an indoor and outdoor unit simultaneously, meaning you won’t have to pay for repairs to the unit during the warranty period.
Question #2: Is Covering My HVAC System or Unit That Important?
It is generally recommended that you cover your units or system in the fall and winter to protect it from the elements. Operating your unit with a cover is not recommended, as this can cause problems. You may cover it if you are going on a long vacation and plan to keep the unit off. However, make sure to disconnect the power source before leaving.
Question #3: When Do Filter Changes Need to Happen?
The rule of thumb for changing your air filter is once a month. However, this may vary depending on where you reside and the amount of dirt, pet dander, and other contaminants in your home. It’s a good idea to check your filter frequently to see if it needs to be changed.
Question #4: What’s the Right Unit Size?
The heating and cooling unit you’ll need depends on various factors such as your house type and size, insulation, etc. An oversized unit could result in a home that’s too humid, while a minuscule HVAC system will constantly run and raise an expensive energy bill. Only a qualified heating and cooling professional can determine the best unit size for your home.
Question #5: Should I Replace an R-22 Unit with an R410A?
Yes. R-22 is being phased out because it is harmful to the environment. R410A is a more environmentally friendly option supported by the Montreal Protocol, an international agreement created to help reduce the impact of chemicals on the ozone layer. As part of the agreement, the use of R-22 refrigerant is being phased out. This means that, over time, finding replacement parts and refrigerants for old R-22 units will become more difficult and expensive.
Replacing your unit now can help you avoid some problems that will arise in the future.
Question #6: Why Is My HVAC System Freezing Up?
Your air conditioning system can freeze up for a variety of reasons, all of which require the help of a professional technician to resolve. Some common reasons for an AC system to freeze include low refrigerant levels, a dirty evaporator coil, or a problem with the fan. Only a professional technician will have the training and correct tools to diagnose and fix the problem properly.
The refrigerant in your AC unit is responsible for absorbing heat from the air in your home and releasing it outside. When the refrigerant levels are low, the refrigerant still expands to the same amount, causing the temperature to be cooler. This can cause moisture in the air around your evaporator coil to freeze, eventually causing the coil to ice up and not work properly.
If your evaporator coils are dirty, it can cause your unit to lose airflow and eventually freeze up.
Similarly, if your blower motor is defective, it can also cause your system to freeze.
Question #7: When Do I Get HVAC Service?
It is typically recommended to service your air conditioner unit every spring, fall, or year if you use it frequently. Have your heating and cooling units checked by a professional every year. This annual inspection will help keep your units running smoothly and prevent any major issues.
Question #8: Why Is There a Popping Sound in My Vents?
The ducts in your home are most likely making a popping sound because they are not properly insulated. When the furnace starts up, the air pressure in the ducts increases, forcing the insulation to expand. When the furnace shuts off, the air pressure decreases, and the insulation contracts; this repeated expansion and contraction can cause the ducts to make a popping sound.
If your ductwork is too small, it can’t handle the amount of air your AC is trying to move. This can cause popping noises. A qualified AC repair specialist can fix this by making your ductwork bigger.
Question #9: What Are Zoning Systems?
A zoning system is a system that helps to control and manage the development of land. It divides land into different zones, each with its own rules and regulations. This can help to prevent problems such as overdevelopment and can also make it easier to provide services such as utilities and transportation.
Learn More from HVAC Swami
Find out how to care best for your Berkheimer HVAC systems with the help of HVAC Swami right now! Our experts have over 100 years of experience helping homeowners deal with heating, ventilation, air conditioning, and more! Visit our website to book an appointment with us, or call 866-918-3252 today!
