"Moe Jones" wrote in message
...
Art wrote:
Just had a tech check out one of my 3 HVAC systems. When the house
was built the contractor switched outside units between the upstairs
and basement so upstairs was too hot. I had them switch out the
obviously wrong sized outside units. I asked them if anything inside
had to be switched out and they swore everything was ok inside.

Upstairs never cooled well but we were never used upstairs much until
now.
So I had someone come out today and told him the story. He says the
metering unit orifice (piston) is too small upstairs and needs to be
replaced with bigger one at a cost of $193 for the part and $533. I
just called another guy to come in for a second opinion but I was
wondering if the estimate sounds reasonable if indeed this is the
problem.
Thanks in advance for assistance.

I have a few questions:
1. What is the size (Tonnage) of the upstairs and basement condensing
units?
2. What is the size (Tonnage) of the upstairs and basement evaporator
coils?
3. Was the bid to replace the piston only or to replace the total metering
device?

--
Moe Jones
http://www.MoeJones.info


I have another tech coming tomorrow. Unfortunately I don't have the
expertise to interpret the labels on the Carrier outdoor units. The one
thing I did notice is Piston ID 57 on the larger unit label and Piston ID 52
on the smaller unit's label. The part his receipt says I need is a #57
Piston. I asked him if the units are mismatched shouldn't we switch out
both pistons but he said an extra large one in the smaller unit wasn't a
problem.

When the next tech arrives tomorrow I will try to get the tonage of the
condensing and evaporator units in both locations.