How to Know When You Should Replace Your HVAC System?

How to know when it's time to replace your HVAC system? Get insights on a new HVAC system cost and find the perfect AC and heating unit with Sandium's expertise.

Updated on Oct 22, 2023
5 min read
How to Know When You Should Replace Your HVAC System?

Like every other equipment in your Northern California house, an HVAC system doesn’t last forever either. The heating and air conditioning system will need to be replaced eventually. However, how do you know when you are nearing that point? These are a few warning signs that it’s time to replace the HVAC unit in your house.

1. HVAC system is aging

According to the Department of Energy, you should upgrade an HVAC system after 10 years. However, certain energy efficient units can run till they are 15 years old. You should check the true age of your HVAC system to know when it was installed.

2. Skyrocketing repairs

It’s time to change the HVAC system if a trusted technician gives you a particularly high estimate. This indicates that it’s time to replace the system completely. You should consider replacement when the cost to fix the system is more than 50% of the cost of getting a new system.

3. Performance is on the decline

Rising energy costs is a sign that your HVAC system is probably working harder for attaining the same temperature as it used to achieve before. It may be time to change the system if you are spending more on utility bills. You can increase energy efficiency by using programmable thermostats and scheduling yearly HVAC tune-ups. However, if the system is a decade old, you may notice reduced performance.

4. Variations in indoor temperature

Older HVAC systems struggle to deliver the same amount of heating and cooling. You should consider getting a replacement if you notice that certain rooms are getting colder or hotter than others. You should consider air balancing in the meantime to even out the difference in temperature.

5. Poor air quality

HVAC systems can improve air quality if they run properly. Adequate ventilation is also a sign that the system is working as it should. Your system is not working as it should if you notice dust on surfaces or the smell of dust in the house. Replacement is the best solution if there is high levels of musty mildew, mold, or humidity.

6. Noisy furnace

Well-maintained HVAC systems run quietly. Noises are made by older systems that have old and worn components. Sounds are a cause for concern if the furnace starts grinding, clicking, squealing, or rattling. You should schedule servicing as soon as possible when your HVAC system starts to produce new noises. You should also be prepared for replacing the system.

7. The unit uses Freon refrigerant

Production of R-22 or Freon refrigerant has been banned by the Environmental Protection Agency as of January 2020. Newer HVAC units make use of environmentally friendly refrigerants. However, units older than a decade still use Freon. You should consider a replacement if your unit uses R-22 refrigerant.

8. Ice on the heat pump

Frost and frozen coils are common concerns where outdated HVAC systems are concerned. The heat pump may experience icing occasionally when the temperatures outside are very cold. However, this should not be a regular thing. You should consider replacing your existing HVAC unit if you notice frequent icing. This means your system may be nearing the end of its productive life. 

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