Question about Ruud Central System Air Conditioner

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Ruud 4.5 ton unit comes on but the compressor is noisy and it does not cool house....can compressors be replaced or can you put more oil in them....where can we purchase A replacement compressor???????????????????????

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First, check the age of the unit. If it's less than 5 years old, the compressor may still be under warranty. You would be responsible for the labor portion.

Replacing an A/C compressor is not simple and requires special tools and training. Almost any local competent A/C shop should be able to replace a compressor if that is the problem.

You might want to call for service first before going any farther.

Posted on Jul 18, 2010

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Is there a system mismatch with an American Standard 13 seer 3 ton compressor and a Nordyne 3.5 ton air handler? Noise at TRV when heating.


This must be a heat pump? Sometimes the unit can be more efficient with this combonation. What you are probably hearing is the reverse direction of the
refrigerant going back through the liquid line.

If in cooling sometimes you can hear a gurgling sound going through the expansion valve, sometimes
this is a sign of low refrigerant or the system is fine..

If you recently had the outdoor unit replaced and noise is an issue, check to see if the unit has isolation pads installed underneath the unit whether
it be on concrete slab or on brackets mounted to
house. Sometimes the new units come with compressor that has a jacket installed over it

Feb 14, 2010 | Ruud Central System Air Conditioner

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New Ruud 16 seer central air and heat pump - very noisy


A few things to check
1) Is the unit mounted on metal brackets attatched to
the house, is so I would probably put rubber pads
between the unit and the brackets to absorb the
vibration.

2) Same is tru if sitting on a concrete or plastic pad.
3) Some units come with the compressor that has
an insulated jacket around it, this is also for noise
reduction.

4) The fact that you replaced an older unit with a newer one could also mean that you have a bigger blower.

5) Which leads to the unit not performing because
it may have not been set up properly.

6) Take the door off the unit, make sure power is turned off. Usually on the left hand side of the indoor
unit it will list the temperature rise that this unit
requires. I`m guessing between 25-45 deg.

7) This is the temp. difference you would measure
on the return air near the furnace. Then Take a
temp. measurement in the Supply duct near the
indoor unit.

8) If its not within the range the furnace requires,
he needs to come back and adjust the fan speed

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1 Answer

Compressor size


Square footage is how you determine what size of an AC you need, say two bedroom house with 1500 square feet would require a 3 ton unit but I would go to a 4 or 5 ton depending on brand and what you may do in the future, Like adding a bedroom or bathroom and how many people will be living in the house, a heat pump normally last longer the bigger it is and is more efficient than a smaller size. Just think like this, a 3 ton will run 30 minutes to an hour longer to cool the same space as a 5 ton so if the five ton does it 30 minutes faster it will not run as long. And when it has to pull down the temperature again it will do it much faster. So less run time means faster heat or cooling and less energy is used. I have found that the bigger units are made better and last longer as a general rule. And to understand the 3-ton and 5 ton let me say that it means how long it takes 3 tons of ice to bring the temperature down 10 degrees, the old BTU’s British thermal units. However the bigger the unit the more well built it is normally and the less maintenance required. 5 tons of ice would get it cooler faster. But one thing to keep in mind a heat pump is only good for 20 degrees temperature range, for instance if the high range is 80 then the low side would be 60 in order for it to be efficient so if you have it set in the house at 72 degrees on the high side and low side would be 52 degrees. But the larger the unit the less time it would take it to recover from the heat differential.

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1 Answer

Noisy outside from the Unit


Could be compressor noise Improper charge bad fan motor hard to say. What is the brand name of your unit. Russ

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1 Answer

We have a fairlynew 5 ton Central Ruud or Rudd unit that it is so noisy in the yard that we can not stay out there. We thinkit is the compressor. Help


I have a new 13 seer rheem or ruud same thing. I can not here it run. Uou must have a bad compressor. Ruud put schroll compressor in and when they start to go out they will drive you nuts they are so loud. Get it changed before your warranty runs out. Ruud will change your compressor if it to noisy. No problem. Russ
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Jul 20, 2009 | Ruud Central System Air Conditioner

1 Answer

1990 model RUUD AC unit. Fan runs, no cooling


Is the outside unit running? Fan and compressor?

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2 Answers

Compressor kicks out and it's new


First of all, clean your outside coils so that you are assured of good cooling air. The compressors have an overtemp device that is usually internal to protect them against heat. If you have an air compressor use it to blow out the coils good. If the compressor will start, the capacitor is good so it sounds like a cooling problem with the compressor

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Samsung 1.5 ton slpit AC.the out door unit is very noisy


Check to see if the noise is coming from the fan, could be bad bearings. Replace the fan motor if that is the case. If the noise is coming from the compressor, the only other place besides the fan, then your compressor has some issues and will probably stop working soon, maybe line up for a replacement before you are left with a hot house.

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