Frequently Asked Questions
How often should I service my HVAC system?
A: At least twice a year — once before summer (cooling season) and once
before winter (heating season). Regular maintenance helps ensure energy efficiency, prevents breakdowns, and extends the life of your equipment.
How often should HVAC filters be replaced or cleaned?
A: Usually every 1–3 months. If you have pets, allergies, or higher dust, check and change them more often. Clogged or dirty filters reduce airflow, make the system work harder, and degrade indoor air quality.
What size HVAC system do I need for my home or building?
A: That depends on square footage, insulation, window orientation, climate, duct layout, and occupant usage. An HVAC pro performs a “load calculation” to find the optimal size. Too large or too small units cause inefficiency or wear.
How long do HVAC systems last?
A: On average ASHRAE has listed the life expectancy on the systems below.
- Central air conditioners: 10–15 years
- Furnaces: 15–20 years
- Heat pumps: 10–15 years
Proper care, maintenance, and occasional upgrades can stretch these lifespans.
How long do HVAC systems last?
A: On average ASHRAE has listed the life expectancy on the systems below.
- Central air conditioners: 10–15 years
- Furnaces: 15–20 years
- Heat pumps: 10–15 years
Proper care, maintenance, and occasional upgrades can stretch these lifespans.
Why is my HVAC system making strange noises or smells?
A: Some common signs include rattling (loose parts), buzzing (electrical issues), squealing (belt or motor), or musty smells (mold or clogged filters). These are red flags — a technician should inspect to avoid bigger, more costly problems.
Can I do HVAC maintenance myself?
A: You can handle simple tasks like changing filters or clearing debris around outdoor units. But inspections, refrigerant checks, carbon monoxide, electrical work, and component cleaning should be done by professionals to ensure safety and system integrity.
When should I repair vs. replace my HVAC system?
A: Consider replacement if: the unit is old (10–15+ years), repairs are frequent and costly, efficiency is down, or it fails to meet demands. If a single component is failing, repair might make sense, but replacing both indoor and outdoor units is often more efficient.
What are the signs my HVAC needs a professional check?
A: Watch for these warning signs:
- Spikes in monthly energy cost especially in the summer
- Uneven heating or cooling
- Short cycling a constant on/off of the unit during normal operation
- Unusual noises or foul smells
- Visible signs of oil around refrigerant piping or if ice is developing on refringent piping
When these show up, call an HVAC technician before things worsen.
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