Air Conditioning Service & HVAC Maintenance St. Louis


An unchecked heating and cooling system can cost you money in energy waste and expensive repairs that could have been prevented.

These are some of the most important steps that our HVAC technician takes to keep your air conditioner & furnace running optimally.

Replace Air Filters

Air filters are the most obvious items on the checklist. Dirty or damaged filters constrict the flow of air entering your home. By having them checked and replaced as needed, you are ensuring that your family is kept comfortable and safe from some air pollutants. It is a good idea to keep a note near the filter and date whenever they need to be replaced. Filters that do not last for a certain amount of time may be an indicator of a bigger problem with your system.

Replace Belts and Clean Coils

The belts inside the unit will succumb to wear and tear over time. It is much more convenient to have our HVAC technician replace them when he notices that they are beginning to break down during a maintenance check than to wake up one January morning to a cold house due to its breakage. This is a simple and inexpensive replacement that could save you from a much larger problem down the road.  Cleaning any accumulated buildup on the coils will also be done during the maintenance check. In order for your heating and cooling systems to work with optimal efficiency, these coils need to be devoid of any clutter or debris.

Calibrate the System

The HVAC technician will calibrate your system. They will want to check that the output matches the temperature settings. If a discrepancy is noted, they will perform further checks to identify and remedy the cause of the problem. This will include an assessment of the electrical wiring. All of the connections should be tight, and the technician should read the voltage to make sure that the output is sufficient for the unit. All the thermostats inside your house will also be checked at this point to see if they are reading the room temperature accurately. This is a good time to ask any questions you may have about using the settings to cut down on energy use.

Inspect the Duct Work

A quick assessment of your ductwork will also be performed. In most homes, the majority of ductwork is hidden from view. Expect your HVAC expert to ask you some questions about the comfort levels in your house. He will specifically be curious about any hot or cold spots or rooms that consistently do not match the temperature of the rest of the house.

When it comes to your home’s heating and cooling system, you want to rely on experts to keep it working properly. Contact Thomas Hoffmann Air Conditioning & Heating LLC at (314) 471-7625 to keep your system trouble-free year-round.