A healthy HVAC system keeps your home comfortable at all times. However, even the best HVAC unit may develop issues or need replacement. If you're unsure when to call an HVAC technician to check things out, look for some of the following signs.

1. High Bills

Are those energy bills getting larger each month? That may be because your HVAC unit is working overtime when it shouldn't be. Maybe your unit is outdated or has malfunctioning parts. The more energy it expends, the higher your bills will rise and the greater carbon emissions there'll be on the environment.

2. Poor Air Circulation

Is your cool air not circulating throughout the house the way it should? Your unit should circulate air throughout the house, so you can feel its impact regardless of where you are. If it's having problems achieving this, you may need to call a professional!

3. Loud Noises

You should be able to feel when your AC turns on but not hear it the entire time. It shouldn't go above a low humming sound that resembles ambient noise. Your HVAC system can last 15 to 25 years, according to Bob Vila. However, when your unit starts getting noisier and shakes when you turn it on, it may be a sign that it's nearing the end of its life span.

4. Allergic Reactions

When your unit is on, do you suddenly begin to cough, sneeze, or have watery eyes? Unfortunately, your HVAC unit may have a buildup of dirt, mold, and other contaminants that begin circling in the air when it's on. An HVAC contractor will normally clean or replace your filter to avoid such issues.

5. Foul Smells

Not only should you not have to hear your unit, you also shouldn't have to smell it. A smelly HVAC unit usually comes from a buildup of mold and dirt. Your HVAC contractor can tell you whether they can clean it out and fix it or if it's too far gone and needs to be replaced for your safety.

As fall and winter approach, you want your home comfortably heated. If you're experiencing any issues with your HVAC unit, the time to act is now. For a reliable HVAC contractor who's been in the business for a while, contact us today at Shaner Plumbing Solutions for a consultation.