What Steps Can I Take for HVAC Preventive Maintenance?

HVAC preventative maintenance is one of the smartest ways to protect your HVAC system. At Salt City Plumbing, Heating & Air, we’ve seen firsthand how routine care extends equipment life, improves energy efficiency, and helps Wasatch Front homeowners and landlords avoid surprise breakdowns—especially when the weather turns extreme. Whether you’re in Salt Lake, Davis, or Utah County, these practical steps will help keep your system running strong all year long.

1. Check and Replace Your Air Filters

Dirty air filters restrict airflow, forcing your HVAC system to work harder than it should. This reduces efficiency and can even lead to system failure. Most homes need a new filter every 1–3 months, depending on the type of filter, local air quality, and whether you have pets. If you’re unsure, hold the filter up to a light—if you can’t see through it, it’s time for a replacement.

2. Inspect and Clean Condenser and Evaporator Coils

Outdoor condenser coils collect dirt and debris over time, especially during spring and summer. Use a soft brush or vacuum to gently clean them, and make sure there’s at least 2 feet of clear space around the unit. Indoor evaporator coils also benefit from cleaning, though they’re typically harder to access and may require professional service.

3. Test the Thermostat

Make sure your thermostat is working correctly and accurately reflecting the room temperature. If your system doesn’t seem to be responding properly, replace the batteries (if applicable) and double-check your programmed settings. Consider upgrading to a smart thermostat for more precise control and better efficiency.

4. Lubricate Moving Parts

Your HVAC system has several moving components—motors, fans, bearings—that can wear out if not properly lubricated. Lack of lubrication increases friction, which leads to overheating and eventual failure. While many newer systems have sealed motors that don’t require this, older units often benefit from regular lubrication. If you’re not sure what your system needs, we can help.

5. Check Refrigerant Levels and Look for Leaks

Low refrigerant levels can point to a leak and lead to poor cooling performance. This isn’t something you should attempt on your own—refrigerant handling requires EPA certification—but you can watch for warning signs like frozen coils, inconsistent temperatures, or hissing sounds. If you suspect a problem, call in a certified technician.

6. Tighten Electrical Connections

Loose electrical connections can cause shorts, blow fuses, and reduce the safety and reliability of your HVAC system. You can check visible wiring for signs of wear or damage, but tightening terminals or testing voltage should be left to professionals with the right tools and training.

7. Clear the Condensate Drain

Condensate drains remove moisture that your air conditioner pulls from the air. When these lines clog, water can back up into your home and lead to mold or water damage. Pouring a cup of vinegar or diluted bleach through the line every few months helps prevent buildup. If you notice water pooling near the indoor unit, the drain may be blocked.

8. Evaluate Ductwork for Leaks or Blockages

Leaky ducts waste conditioned air, forcing your system to run longer to reach set temperatures. You may notice rooms that never seem to get comfortable or a spike in your energy bills. Sealing duct joints with mastic or foil-backed tape can help, but larger leaks or airflow problems may require a professional duct inspection.

9. Test Startup, Operation, and Shutdown Cycles

Your system should start up smoothly, run steadily, and shut down without any strange noises or sudden stops. If you notice any irregularities—short cycling, frequent restarts, odd smells or sounds—it’s time for a closer look.

10. Stick to a Seasonal Maintenance Schedule

Preventative HVAC maintenance is all about timing:

• Spring: Focus on your air conditioner. Clean coils, check refrigerant, and test cooling performance before the summer heat sets in.

• Fall: Prepare your furnace. Check burners, inspect heat exchangers, and test ignition and airflow before winter arrives.

Scheduling a professional tune-up in these transitional seasons ensures your system is ready when you need it most.

At Salt City Plumbing, Heating & Air, we offer full-service maintenance for heating and cooling systems across the Wasatch Front. If you’d rather not get into the weeds with coils, wiring, or refrigerant, let us handle it—our licensed technicians are always ready to keep your system running safely and efficiently.

Let our licensed pros handle the hard stuff—contact us today for expert preventative HVAC maintenance.