I just had a txv installed on one of my systems. It is a Sporlan with the following info on it:CBBIVE-3 84.5 1906
EA36YD037. It was installed on an existing 4 ton rated Allstyle coil. The condenser unit is a new Carrier 24ABR342. After 4 days of operation system is cooling the same as before the txv and daily run times are within 1/2 hr of each other. What I have noticed is that my kw usage is up 15-20%. Nothing else has changed in my home to explain this increase. The weather here in DFW has been very consistent for the last month which corresponds to a kw usage that has not varied by more than 10/day. Now its approx. 20 kw higher than before the txv. Could this txv be too small thus causing a greater load on compressor? I did ask the tech about the 11 degree subcooling required (which is stamped on the side of the condenser) and he said once he charged the system back up it would work correctly and that measuring it was unnecessary. As I watched him charge the system I noticed the right hand gauge on his set didn't work. He commented that he didn't need that one to charge the system. I asked about the left one being pegged out and he said that was normal. Ok, I'm not a tech but I thought the gauges were there to determing proper pressures, etc. Any ideas? Thanks.