Lansing’s humid continental climate brings warm, sticky summers that push your cooling system to its limits. From the Michigan State Capitol’s shaded lawns to the bustling Old Town district, you’re relying on crisp indoor air as temperatures climb. Daily wear and tear can lead to an unexpected AC knocking noise, leaving you wondering what’s happening inside your unit. As part of the Randazzo Company family, Hager Fox Heating & Air Conditioning is your local expert, here to demystify every rattle, tap, or ping so you can stay comfortable all season long.
Why Choose Hager Fox For AC Troubleshooting
When you turn to us, you’re choosing a team that never hires subcontractors. Every technician is a direct employee, ensuring consistent quality and accountability. Our licensed and insured specialists handle all makes and models, including high-performance systems from Lennox, Mitsubishi, and Kohler. We understand heat pumps, ductless AC, central AC units, and more.
You’ll also benefit from transparent pricing with free estimates on both replacement quotes and service calls, so you know exactly what to expect before any work begins.
What To Do When Your AC Makes Strange Noises
If your air conditioner making noise feels more like an urgent call for help than a background hum, it’s time to listen up. Strange AC sounds often signal growing wear that could evolve into a breakdown if ignored.
Delaying HVAC repair knocking issues might seem harmless at first, but minor vibrations can quickly worsen into more extensive damage. You don’t need to be an expert. Simply note when and where you hear the sound, turn off the system if it sounds severe, and reach out for professional diagnostics.
Common Causes of Knocking Sounds
Knocking can originate inside your home, just outside near the condenser, or even at start-up and shut-down. Pinpointing whether the noise occurs when the unit is idling or firing up helps narrow down the culprit and accelerates troubleshooting.
Fan Blade Issues
When debris or a bent blade spins off balance, you’ll often hear uneven thuds from outside around the condenser. You might spot leaves or twigs caught in the guard. Safely power down the unit and clear away any obstruction. If the blade itself is warped, a simple professional realignment or replacement will restore smooth performance.
Faulty Blower Motor
If you notice a rhythmic knock coming from inside your air handler, a failing blower motor could be the source. Loose bearings or a misaligned shaft will create repetitive tapping as air circulates. You can remove the access panel and check for debris, but motor issues typically require an HVAC technician to lubricate moving parts or install a new blower assembly.
Loose Parts in Compressor
A persistent clunk near the outdoor unit often points to loose components within the compressor housing. Because the compressor is vital for refrigerant flow, any AC compressor noise demands prompt attention. Avoid attempting repairs yourself, as calling in a certified pro ensures fast detection of broken mounts or internal failures before more costly damage occurs.
Ductwork Issues
Knocks and pops echoing through your vents might not originate from the equipment, but from expanding and contracting ductwork. Temperature fluctuations cause metal ducts to flex, creating sharp clicks as air pressure shifts. You can secure loose straps or apply foil tape for minor gaps; however, a thorough inspection by a qualified technician will confirm proper sealing and insulation to prevent future disturbances.
Call Hager Fox for AC Repair
If you still hear knocking sounds after basic checks, don’t wait until a small fault turns into a major breakdown. Our background-checked and NATE-certified technicians arrive ready to diagnose and resolve the problem efficiently. With flexible financing options, instant rebates, and an unwavering commitment to excellence, we stand behind every job with a 100% satisfaction guarantee.
Contact Hager Fox Heating & Air Conditioning today to schedule your comprehensive AC inspection.
