Our heating, ventilation, and air conditioning systems, better known as HVAC systems, are the go-to source for maintaining comfort inside of homes and businesses. When the HVAC isn’t working, then the air inside is probably downright miserable too. 


When it comes to choosing services for HVAC in St. Louis, MO, it’s important to know how the services work, what you can expect, and when you should rely on a professional service for your needs. In this guide, we will share some insights into how HVAC services work and share everything you need to know! 

An Overview of the HVAC System


Not every HVAC system is made exactly the same, but they all have similar operations. These systems are designed to heat, ventilate, and cool the space. They are attached to ductwork systems that push air through the structure and out through the vents that are placed around. The temperatures are controlled by a thermostat, and you can switch from heating to cooling as needed. 


The systems regulate the indoor climate, but they also regulate the air quality. With air filters in place that are regularly maintained or changed, the system will filter out dust, debris, and other particles from the space. 


On a system, there is heating, ventilation, and cooling. Let’s look at each of these parts. 


  • Heating: the heater uses a furnace that is powered by either gas or electricity. The furnace will generate heat and distribute it throughout the space. A heat pump might be used to transfer air from outside or from the ground in some cases. 
  • Ventilation: venting works through the air ducts, which are conduits for heat and air distribution. They transport the air to different parts of the building and provide airflow throughout. Ventilation fans can also help to circulate air and improve air quality.
  • Air Conditioning: air conditioners remove warm air from inside, transfer it outside, and then circulate cool air throughout the interior. An evaporator coil, condenser coil, and compressor work together to make this happen. Temperatures are regulated by a thermostat. 

How HVAC Services Work


HVAC St Louis

Photo by Jose Vazquez on Unsplash


When it comes to maintaining these systems, there are a lot of things to consider. The professionals provide an extensive array of services that cover maintenance, repairs, and even replacement or new installation. 


We’re going to break down each of these for more information. 

HVAC Installation


When a brand-new system is needed, installation will occur. This can happen when an old unit needs to be replaced or when a brand-new unit is being installed where there hasn’t been one before. In terms of a replacement, the vents and ductwork will already be there, but should be inspected for any potential issues. 


For brand-new installation, ductwork will need to be placed and vents set up so that heat and air can effectively circulate. In addition, a thermostat will need to be installed to control the HVAC system. 


Here’s how installation typically goes:


  1. Evaluating the area and determining the best approach 
  2. Load calculations for the size and capacity of the system
  3. Selecting the right system for the location’s needs 
  4. Preparing the space for installation
  5. Setting up the new system, connecting ductwork, and adding any additional elements
  6. Completing all electrical or gas connections safely for system operations
  7. Testing all elements of the system to ensure it is working as it should


The knowledgeable HVAC team will know exactly what steps to take and will be able to walk you through the process from start to finish. 

HVAC Maintenance


Every unit needs maintenance from time to time. It’s a good idea to bring in your technicians to inspect the unit and do any needed clearing, repairs, or filter changes. It is recommended that you have routine inspections twice a year. In large facilities, these inspections may need to occur more often. 


Most HVAC companies will provide maintenance service plans that you can opt into. Even if you choose not to establish a routine schedule, you need to schedule maintenance from time to time. 


Maintenance generally covers these things: 


  • Inspection and servicing (system checks, filter replacement, etc.)
  • Cleaning, lubrication, refrigerant checks
  • Operational testing
  • Monitoring efficiency

HVAC Repair


While maintenance can help to prevent big repairs, your unit is naturally going to wear down over time and may need repairs on occasion. We all experience HVAC issues at some point, and professional repairs can help us continue to enjoy regulated air in our space. 


Repair calls will go through a series of diagnostics to determine what the issue might be. The technician will inform you of the necessary repairs and then proceed as requested. Some companies do provide emergency services or a rapid-response approach so that you can get help quickly when you’re contending with extreme heat or extreme cold. 


Being proactive with maintenance can help reduce repair needs. However, when something does go wrong, just call in the professionals to help you get back on track. 


Repairs can range from changing out minor components to major repairs. What is needed will simply depend on your unit and its age. Trust the professionals to walk you through the details and get repairs made in a timely manner. They can quickly diagnose and help you get the system running again. 

Get HVAC Service in St. Louis, MO from SMART St. Louis


When you need HVAC in St Louis, MO, we are here to help. Understanding how the units work and handling minor things like a filter change yourself is a good choice. However, you also need to know when to call the professionals. Choose a qualified company that you can trust to bring you efficient and reliable services in the St. Louis area. 

At SMART, we are proud to provide trustworthy and reliable HVAC services for homeowners. Whether you need maintenance, repairs, or a system replacement, we are here to help. Our trusted network of contractors will connect you with a qualified person in your area. Find a contractor today!