We received 3 estimates for the same Trane system consisting of a TUD100R9V5, 4TTX4042A100, RXC054S; XL14i AC unit, XV80 heater, Honeywell F200 filter, Honeywell 265 humidifier. This $7500 system replaced a 15 year old system with an 8 SEER rating. I received another estimate for a 10 SEER system comparable to what I had for $3000.
I was told by 3 Trane people...
1. energy bill would be reduced by 30-50%
2. it would be quieter
3. It would run less
While this starts with a low speed mode it seems every single time it switches to full. It never stays in low; even at night when the temperature difference is very low.
I was provided two digital thermostats. The first time this was set to 72 since that is the temp we like. Within hours my house dropped to 65-66 degrees. I use an infrared temp gauge and measure a number of areas in the house plus a thermometer in central location. When the wall directly behind the thermostat reads 72 the first one said 76 and the current one says 79. This appears to be a viable method as this was tested in another home that used a digital thermostat and they agreed. The mercury thermometer and infrared thermometer agree with each other within 1-2 degrees.
We have received our first bill and it actually was $10 higher than last year. At a 30% savings it should have dropped by about $70. At 50% savings it should have dropped by $115.
My issue is simply that none of the claims have come true even though I spent the additional $4000. It is just as noisy, runs just as much and costs me about the same in energy which were the main concerns anyway.
I purchased this expensive system because of everything I had been hearing for years on end on the radio home fix it shows. Naturally I feel hood winked but am certainly open to the fact that I may have a unique situation.