I have quotes from 2 HVAC contractors in my area. Both are very reputable. One is our long time HVAC company for our home.
We have nearly 20 year old equipment in Texas.
Although we are planning on replacing both of our upstairs units sometime in the future, we wanted to change out the 4 ton downstairs unit now. During the conversations, I asked if we could relocate one of the condensers from one side of the house to the other, so all three would be together, in the shade.
Both contractors said they would be able to do this, but it would require having the tubing go on the outside of the house. I understand that. What got me is that one contractor said that we would need to change the tubing out all together, because the current tubing is too small. This contractor said that, in order for the unit to have the correct efficiency, that would need to be done. Our long time contractor said that, although it would affect SEER a little, by keeping the current copper line, the EER stays the same basically, and saves us a lot of money up front.
So, my questions to you are:
1. Does anyone have any strong thoughts (either way) about the benefit of moving the one unit to the shady side of the house - would it really make a significant difference?
2. What are your thoughts of having to change out the copper line tubing to the larger size?
Thanks in advance.