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DavidPJ
01-16-2010, 06:35 PM
How can I determine the tonage of my Trane heat pumps? Is it related to the model number?

Thanks.

dandyme
01-16-2010, 06:53 PM
yep

T_ _ XXX

XXX=capacity in kbtu

T_ _ = first 3 letters of model #

CynicX
01-16-2010, 07:02 PM
Thought it was 7th and 8th...

Example model number.
4TTX4036A1000A

7th and 8th = 36

That means its 36,000 BTU

There are 12,000 BTU in a ton, so 36,000/12,000 = 3 Ton

(Yes or you could just do 36/12 = 3 ton)

If you put up the model number we can just tell you if you are still unsure...

DavidPJ
01-17-2010, 07:35 AM
Thought it was 7th and 8th...

Example model number.
4TTX4036A1000A

7th and 8th = 36

That means its 36,000 BTU

There are 12,000 BTU in a ton, so 36,000/12,000 = 3 Ton

(Yes or you could just do 36/12 = 3 ton)

If you put up the model number we can just tell you if you are still unsure...

Here's the model of one of the Trane heat pumps:

2TWX4042B1000AA

So, if I use the 7th and 8th digits, it's a 42000 BTU unit, or 3.5 ton. Sound right?

Thanks.

catmanacman
01-17-2010, 08:33 AM
that is a r22 14 seer 3.5 ton heat pump it should be a xl14i

CynicX
01-17-2010, 02:29 PM
Here's the model of one of the Trane heat pumps:

2TWX4042B1000AA

So, if I use the 7th and 8th digits, it's a 42000 BTU unit, or 3.5 ton. Sound right?

Thanks.

Yep. Thats right.

Curious why you are asking? Having it replaced or something?

DavidPJ
01-17-2010, 05:09 PM
Thanks guys. Yes, it is a XL14i.

I like to know what's been installed by our builder and so I can understand and intelligently discuss it. The house is about 1-1/3 years old.

CynicX
01-17-2010, 05:28 PM
Thanks guys. Yes, it is a XL14i.

I like to know what's been installed by our builder and so I can understand and intelligently discuss it. The house is about 1-1/3 years old.

I gotcha.

What to really intelligently discuss, perform a heat load calc on your house and see how much cooling/heating the home really calls for. :)

Then we can move onto the duct work... :)

DavidPJ
01-17-2010, 07:06 PM
I gotcha.

What to really intelligently discuss, perform a heat load calc on your house and see how much cooling/heating the home really calls for. :)

Then we can move onto the duct work... :)

Now that would be interesting, but I think I would be afraid of the results.

CynicX
01-17-2010, 08:26 PM
Now that would be interesting, but I think I would be afraid of the results.

I would too. Usually I find systems oversized. The system in my home ~5 years old was about 1/2 ton too large.