HVAC FAQs | Roland’s Heating and Air | Lenoir, NC

How often should I replace my residential air filters?
For standard homes in Lenoir, we suggest changing 1-inch filters every 30 to 90 days. Homes with pets or allergy sufferers benefit significantly from monthly replacements.
What are the warning signs that my AC unit needs urgent repairs?
Watch out for strange clicking or grinding noises, weak airflow, sudden spike in electricity costs, or ice forming on your outdoor refrigerant lines.
Is it really worth it to get an HVAC tune-up every year?
Yes, absolutely. Annual tune-ups prevent major breakdowns, preserve manufacturer warranties, and optimize system efficiency to lower monthly utility bills.
How long can I expect my central heating and cooling system to last?
With steady, professional preventative maintenance, most modern heat pumps, furnaces, and central AC systems last between 15 and 20 years.
What does a heat pump do, and how does it differ from a furnace?
A furnace generates heat by burning fuel or electricity, while a heat pump transfers existing ambient outdoor heat inside, making it incredibly efficient in moderate weather.
What size HVAC system does my North Carolina home actually need?
System sizing depends on your home's total square footage, insulation quality, and layout. Our technicians perform an official load calculation to find the perfect fit.
Why is my heating or cooling system making loud clanging or squealing noises?
Loud noises usually indicate a loose blower belt, worn motor bearings, or unbalanced components. Turn off the system and call us immediately to prevent severe damage.
What are the benefits of upgrading to a programmable smart thermostat?
Smart thermostats automate temperature adjustments around your daily routine, letting you save energy while away and monitor your home climate from your phone.
How can I improve my home's indoor air quality during allergy season?
Upgrading to high-efficiency filters, sealing leaking air ducts, and installing dedicated whole-home air purification systems will drastically reduce indoor pollutants.
What should I check before calling for emergency repair services?
Ensure your thermostat is set to the correct mode, check that your air filter isn't completely clogged, and verify that your system’s main circuit breaker hasn't tripped.