To TEV or not to TEV?

Posted by Alexander on February 23, 2009, 3:05 am

Jean wrote:

> What are your thoughts on adding TEV's to a 2 Ton, A410 heat pump?

It should already have one.

>
> If my current situation requires a complete pump out, purge and
> re-install of refrigerant, would it be advantageous to install TEV's
> to replace pistons?
>
> My HVAC tech says it is half a dozen of one and six of the other
> unless the culprit is one of the existing valves.
>
> He says it helps under certain circumstances but also adds one more
> thing that could go wrong in the future. He said a correctly sized and
> installed unit should not absolutely require them.
>
> The extra cost at this time would be about $200 for valves and hard
> start capacitor.

only older designed 410 units require a hard start.

>
> Any comments on TEV's vis-a-vis A410?

Posted by Steve on February 23, 2009, 8:05 am

> Jean wrote:

>> What are your thoughts on adding TEV's to a 2 Ton, A410 heat pump?

> It should already have one.

>> If my current situation requires a complete pump out, purge and
>> re-install of refrigerant, would it be advantageous to install TEV's
>> to replace pistons?
>> My HVAC tech says it is half a dozen of one and six of the other
>> unless the culprit is one of the existing valves.
>> He says it helps under certain circumstances but also adds one more
>> thing that could go wrong in the future. He said a correctly sized and
>> installed unit should not absolutely require them.
>> The extra cost at this time would be about $200 for valves and hard
>> start capacitor.

> only older designed 410 units require a hard start.

The new ones already have them installed.

Posted by Jean on February 23, 2009, 2:23 pm

wrote:

>Jean wrote:

>> What are your thoughts on adding TEV's to a 2 Ton, A410 heat pump?

>It should already have one.

It doesn't.
Goodman GSZ130241A
(13 is for SEER Z is for R410 - 24 is 2 Ton)

The 14/15 SEER have them.

>> If my current situation requires a complete pump out, purge and
>> re-install of refrigerant, would it be advantageous to install TEV's
>> to replace pistons?
>>
>> My HVAC tech says it is half a dozen of one and six of the other
>> unless the culprit is one of the existing valves.
>>
>> He says it helps under certain circumstances but also adds one more
>> thing that could go wrong in the future. He said a correctly sized and
>> installed unit should not absolutely require them.
>>
>> The extra cost at this time would be about $200 for valves and hard
>> start capacitor.

>only older designed 410 units require a hard start.

This 13 SEER unit needs it if TXV's installed.

>> Any comments on TEV's vis-a-vis A410?

Manufacturer's tech says not worth adding at this time. The difference
in operation will not make it worth while using existing coils.

Posted by Alexander on February 23, 2009, 11:33 pm

Jean wrote:

> wrote:
>

>> Jean wrote:

>>> What are your thoughts on adding TEV's to a 2 Ton, A410 heat pump?

>> It should already have one.

>
> It doesn't.
> Goodman GSZ130241A
> (13 is for SEER Z is for R410 - 24 is 2 Ton)
>
> The 14/15 SEER have them.
>

>>> If my current situation requires a complete pump out, purge and
>>> re-install of refrigerant, would it be advantageous to install TEV's
>>> to replace pistons?
>>> My HVAC tech says it is half a dozen of one and six of the other
>>> unless the culprit is one of the existing valves.
>>> He says it helps under certain circumstances but also adds one more
>>> thing that could go wrong in the future. He said a correctly sized and
>>> installed unit should not absolutely require them.
>>> The extra cost at this time would be about $200 for valves and hard
>>> start capacitor.

>> only older designed 410 units require a hard start.

>
> This 13 SEER unit needs it if TXV's installed.
>

>>> Any comments on TEV's vis-a-vis A410?

Apparently it is a revamped R22 unit to 410A. I thought they were all
used up 2 or 3 years ago. Yes ..it is necessary to install in that type
of unit.

>
> Manufacturer's tech says not worth adding at this time. The difference
> in operation will not make it worth while using existing coils.

Might pay you to install a new coil and possibly one-half size larger.

Posted by Zyp on February 23, 2009, 2:46 pm

Old and Grunpy wrote:

> Get your self good tech. something is smelling there

>> What are your thoughts on adding TEV's to a 2 Ton, A410 heat pump?
>> If my current situation requires a complete pump out, purge and

> Whay?

>> re-install of refrigerant, would it be advantageous to install TEV's
>> to replace pistons?

> What pistons?

>> My HVAC tech says it is half a dozen of one and six of the other
>> unless the culprit is one of the existing valves.

> What was problem at start with?

>> He says it helps under certain circumstances but also adds one more
>> thing that could go wrong in the future. He said a correctly sized
>> and installed unit should not absolutely require them.

> to replace or install thermal expansion valve (TXV) half day work
> $500.00 plus gas and travel expanses mileage and tolls.

>> The extra cost at this time would be about $200 for valves and hard
>> start capacitor.
>> Any comments on TEV's vis-a-vis A410?

> TEV=(Thermal electronic valve) which?

ROFLMAO

--
Zyp

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