#DECIBEL RATINGS CHART SERIES#

I struggle to understand why a 5 ton 14 SEER Trane would be 4 decibels quieter than a 4 ton unit? It’s true in other brands, not just Trane.Īccording to our logarithmic scale 76 dBA 4 ton unit is a lot more noise than 72 dBA of the 5 ton. If you are a scientist in the field of sound you may still have an issue finding the quietest heat pump. TechTarget Ī note that Trane has included under there ratings says it’s tested in accordance with ARI Standard 270.95 but it not listed with ARI? This correction is made because the human ear is less sensitive at low audio frequencies, especially below 1000 Hz, than at high audio frequencies. In the A-weighted system, the decibel values of sounds at low frequencies are reduced, compared with unweighted decibels, in which no correction is made for audio frequency. Model # Tons Decibels GSZ140181L 1.5 74 GSZ140241K 2 72 GSZ140301K 2.5 74 GSZ140361K 3 74 GSZ140421K 3.5 75 GSZ140481K 4 75 GSZ140491K 5 76 Goodman 14 SEER Sound Ratings In Decibels Trane 14 SEER A-weighted Sound Power Level Ī-weighted decibels, abbreviated dBA, or dBa, or dB(a), are an expression of the relative loudness of sounds in air as perceived by the human ear. The rest of the model number has to do with revisions. You just kind of forget zeros when trying to decipher tons out of HVAC equipment model numbers. I know it’s funny math, but every industry has some quirks. The 024 would be 24 divided by 12, and now you’re looking at a 2 ton unit. Since there is 12,000 BTU’s in a ton of refrigeration, then a model number with a 018 would be 18 divided by 12 which would equal 1.5 tons. The next three numbers will tell you the tons. The next two numbers represent the SEER rating, in this case it’s 14 SEER.

#DECIBEL RATINGS CHART SERIES#

With Goodman the GSZ is the series of the model. There are a couple that still use there own test.īack to Table of Contents Goodman 14 SEER Sound Ratings It put all manufacturers of filters on the same test footing. What I am trying to impress upon you if you are thinking about buying a new heat pump or air conditioner is, are these manufacturers measuring decibels with the same meter, from the same distance, in the same atmosphere?Ī warehouse echos verses a room prepared to measure only the unit.Īir filters have come up with a common test called the MERV rating. I think you’ll have some new ways of thinking about what unit to buy. You should read my article on which heat pump is the quietest. So I guess we pick the one we like and be satisfied. I had 7 identical thermometers and they read 7 different temperatures. It’s somewhat like reading the temperature. Let me just start off by saying that a recent heat pump (Goodman) that I started up with me and the customer standing right next to it, his comment was “that’s really quiet” and we didn’t have to raise our voices a single octave to hear each other.Īnother big consideration in noise level is that some sounds for you may not be good for me and vice versa. EarQ What Do I Have To Compare Heat Pump Sound Ratings To? I have to agree with the washing machine, we have to shut the door on the thing or you have to raise your voice to hear one another. On the chart below I looked at dishwasher, there’s no way my dishwasher is louder than my vacuum cleaner. If a sound that is 70 decibels is increase to 80 decibels, it means that it’s intensity is 10 time stronger.

In a logarithmic scale the value between points of the scale change according to a pattern. We are more familiar with and can relate more to linear scales where the value between a couple points is always equal. Going up one decibel in sound is not just slightly louder, it’s a lot louder. Decibels are arranged in a logarithmic scale. So here’s an attempt to describe decibels.

York LX Series Octave Band Sound Power Level What’s Are Decibel Sound Ratings?.

Carrier A-Weighted Sound Power (dBA) With Sound Shield.

Trane 14 SEER A-weighted Sound Power Level.

What Do I Have To Compare Heat Pump Sound Ratings To?.

Under each chart is a link to my source of information Table Of Contents.

For example, a 14 SEER Trane with a 14 Seer Carrier. A little help in deciphering model numbers and understanding what a decibel really means may help when looking for sound ratings in the various models of heat pumps.

Decibel ratings chart