Hello and some questions from a homeowner. I have a 10-11 y/o Lennox heat pump with electric back-up heat; condenser m/n HP25-461-29 with an air handler m/n CB-19-41-3P-TXV. The compressor has shorted internally and I'm considering the options to replacing the compressor.
As far as I can tell by reading Lennox numbering on their site, the condenser is a 3.5 ton, and the air handler is a 3 ton. Q1 - Is that a problem?
The house is a typical two-story 4-bedroom colonial, built in 1987 near Philadelphia, 2300 sq. ft, 4 bedroom, finished basement, decent windows, r-13 walls and r-19 ceiling. The second floor has never been as comfortable (hot or cold) as the first floor, and air velocity (output and return) seems real low. Q2 - Is the system sized properly?
The outfit that installed the existing system for the previous homeowner has quoted me a new $4200 for a new Lennox HP13 3.5 ton condenser, no mention of replacing the coil, no questions on how the system worked prior to this problem. Q3 & 4- How efficient is the 13 SSER 3.5ton condenser with a 10 y/o 3 ton coil? And, if the mismatch is a problem, can the coil be replaced with a new 3.5 ton or sholud I go with a 3 ton condenser?
I likely won't stay in this house longer than two more years. Q5 - What is the most cost effective brand?
[Edited by xlcr on 03-17-2006 at 12:51 PM]