Tip & How-To about Heating & Cooling

HVAC or Air Conditioning System Noise

Ever wonder why your air conditioning system is so makes so much more noise than other systems that you see? Do you have to turn up the volume on the TV when the A/C starts up? Do you have to more to another spot in the house when you are on the phone because the air started to blow? I will offer some suggestions as to how you can make your air conditioning system quieter.

The main thing that you need to identify is that the noise is coming from the air moving through the vents. Then make sure that the vents are not broken or partly closed. If they are partially closed then you need to find out if they are just closed by mistake or to balance the system. Remember that if you close some of the vents then the air moved by the blower will have to be forced out of the other vents in the system. If there is too much air for the remaining vents to handle then they will become noisy. Sometimes there just simply is not enough space for the air to get out because there is a shortage of vents installed in the system. I have seen many systems that are this way because the contractor chose to skimp to cut costs on the installation.

Another place that many contractors chose to cut costs is in the balancing dampers that should be installed in the takeoffs from the main trunk lines of the ductwork. The absence of these dampers forces you to balance the air flow with the dampers in the floor or ceiling registers. This restriction at the point of entry into the room makes noise and is very annoying. Simply installing dampers at the correct location so that the branch lines can absorb the noise will solve that problem.

As you can see there are some things that can be done to eliminate noise that comes from your HVAC system. If your contractor tells you that there is nothing that can be done about your noisy system keep on looking till you find a competent contractor that can help you find the source of the problem and correct it. Your system does not have to wake the dead forcing you into all kinds of inconveniences because of the noise. With proper planning and the proper amount of supply and returns with dampers in the right locations, you can have a very quiet and comfortable system.

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on my wall mount General Electric air condition compressor kicks on makes noise and then turns back off what could be the problem


You have to try resetting the system. First turn the breaker off for the condenser and wait about 20 seconds. After you turn it back on the system should reset. If your problem is still there we would suggest you seek professional help.


AC Repair Coral Springs

Apr 10, 2015 | General Electric Heating & Cooling

1 Answer

Heating/air conditioning ducts make to much noise.


depends if your main trunk line and your return duct are insulated on the inside or outside,if it is not on the inside then that would sound like a heavy rain every time it comes on.

Dec 02, 2012 | Heating & Cooling

1 Answer

95 jetta will start then die


Symptom Diagnosis Test 4 - Cuts-Out Or Misses Condition
Preliminary Checks
Prior to starting this symptom test routine, inspect these underhood items:


All related vacuum lines for proper routing and integrity Search for any technical service bulletins related to this symptom.
Test 4 Chart

StepActionYesNo 1Step Description Verify Cuts-out condition Start the engine and attempt to verify the Cuts-out or misses condition. Does the engine have a cuts-out condition-Check for any stored codes. If codes are set, repair codes and retest. If no codes are set, go to Step 3.Go to Step 2. 2Step Description Condition does not exist! Inspect various underhood items that could cause an intermittent Cuts-out condition (i.e., EVAP, Fuel or Ignition system components). Were any problems located in this step-Correct the problems. Do a PCM reset and "Fuel Trim Relearn" procedure. Then verify condition is repaired.The problem is not present at this time. It may be an intermittent problem. 3Step Description Check/compare PID values Connect a Scan Tool to the test connector. Turn off all accessories. Start the engine and allow it to fully warmup. Monitor all related PIDs on the Scan Tool (i.e., ECT IAC Counts and LONGFT at idle). Were all PIDs within their normal range-Go to Step 4. Note The IAC motor should be from 5-50 counts. Watch fuel trim (%) for a large shift into the negative (-) range (due to a rich condition).One or more of the PIDs are out of range when compared to "known good" values. Make repairs to the system that is out of range, then retest for the symptom. Test 4: Cuts Out or Misses Condition (Continued)
Test 4 Chart (Continued)

StepActionYesNo 4Step Description Check the Ignition System Inspect the coils for signs of spark leakage at coil towers or primary connections. Check the spark output with a spark tester. Test Ignition system with an engine analyzer. Were any faults found in the Ignition system- Make repairs as needed Go to Step 5. 5Step Description Check the Fuel System Inspect the Fuel delivery system for leaks. Test the fuel pressure, quality and volume. Test the operation of the pressure regulator. Were any faults found in the Fuel system- Make repairs as needed Go to Step 6. 6Step Description Check the Exhaust System Check Exhaust system for leaks or damage. Check the Exhaust system for a restriction using the Vacuum or Pressure Gauge Test (e.g., exhaust backpressure reading should not exceed 1.5 psi at cruise speeds). Were any faults found in Exhaust System- Make repairs to the Exhaust system. Then retest the symptom. Go to Step 7. 7Step Description Check the PCV System Inspect the PCV system components for broken parts or loose connections. Test the operation of the PCV valve. Were any faults found in the PCV system-Make repairs to the PCV system. Refer to the PCV system tests. Then retest for the condition.Go to Step 8. 8Step Description Check the EVAP System Inspect for damaged or disconnected EVAP system components Check for a saturated EVAP canister. Were any faults found in the EVAP system-Make repairs to EVAP system (use the EVAP tests in this manual). Retest for the condition.Go to Step 9. 9Step Description Check the AIR system Inspect AIR system for broken parts, leaking valves or disconnected hoses (see graphic). Test the operation of Secondary AIR system. Were any faults found in the AIR system-Make repairs as needed. Refer to the Secondary AIR system tests. Retest for the condition.Go to Step 10. 10Step Description Check Engine Condition Test the engine compression. Test valve timing and timing chain condition. Check for a worn camshaft or valve train. Check for any large intake manifold leaks. Were any faults found in the Base Engine-Make repairs as needed to the Base Engine. Refer to the Base Engine tests. Then retest for the condition when repairs are completed.Go to Step 2 and repeat the tests from the beginning to locate and repair the cause of the "Cuts Out or Misses" condition.

Nov 29, 2011 | 1995 Volkswagen Jetta

2 Answers

I have a 2002 Pontica sunfire my air condition stopped working a couple of months ago it doesn't even put cold or heat air, it makes a weird nosie, i was wondering what it could be?


If the weird noise is like a coffee grinding machine, the a/c compressor is shot. If the noise goes away when you turn off the a/c, it confirms compressor trouble. If there is a screeching noise when you rev up the engine, it could be that the a/c belt has too much slack and is not turning over the compressor. Heat production and management has nothing to do with the a/c, it is a separate system,

Aug 14, 2010 | 2002 Pontiac Sunfire

1 Answer

Water cooling noise


Could be air in the system which you would need to bleed out. Either that or a faulty pump.

Sep 24, 2008 | Thermaltake Symphony mini Water Cooling...

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