Virginia can be quite humid. Recheck the model number of your new TRANE HP.. You replaced the inside air handler as well? What is mdl number.? Take a reading of inside humidity. If your AC cooling is working correctly, you should be lowering humidity and seeing condensate draining. I would not pay that bill until the issue is resolved. Make a note of time of day, outside temperature, outside RH, inside temp and thermostat setting. The condenser has to run to work correctly. I would set the thermostat at 78 for a day and check for condensate. Your tech is blowing smoke.

Just an update, the new Trane System is both the outside unit and inside air handler unit.
HEAT PUMP (Model# 4TWR4048GI000AC)

AIR HANDLER (Model# TEM4AOC48S41SBA)

So I had to go out and get a hydrometer (hygrometer) and recorded some values from yesterday. The inside temp is running 79 and the humidity 61-63. The corresponding outside temp has varied from 68-83 and the outside humidity 70-99. Right now inside humidity 62 and outside 86. I've lowered the thermostat to 76 and will report whether there is any condensate, later today.. Both the Trane and the Bryant are 4 ton units. Thanks for your support on this.

The dew point for 79 degree air temperature and 61-63% humidity is about 64 degrees. That means if the coil in the air handler is below 64 degrees then water will condense on the coil. Measure the temperature coming out of the supply closest to the air handler to get an approximate air temperature passing over the coil.

I think condensate is being produced but for some reason it is not flowing into the condensate pump. Could there be a drain which bypasses the what is going to the pump?

If your inside humidity is around 61 RH, then your home will be susceptible to mold issues. You should be looking for an inside supply temp no higher than 60-61 degrees with Delta temp split between 15-20 degrees.

TD

So I lowered the thermostat to 75. The inside temp ranged 73-75, humid 54-57 with outside temp 83-84 and humid 56. I put a glass mercury thermometer (old lab) at the vent and the air coming out is around 60-63 as best I can read it. So 2 hours after lowering the thermostat and getting the above readings, there is still no condensate coming out of the discharge pipe. I can regulate the thermostat to keep the RH below 60 but the condensate is still the puzzle. Thanks for your continued input.

Where is your condensate supposed to drain? This is a mystery. leave your settings for 24 hrs and retake readings mid day tomorrow and report. Your mercury thermometer probably not the best.

TD

Thanks for that. The condensate supposedly drains to a small pump which then pumps the water outside. I put a container there but nothing all day. When the guy came out to "solve" the problem he poured water into the pump reservoir and when it was full the pump shot it outside. Is it possible that there is a plug or obstruction preventing the condensate from getting to the pump? If I base the volume on the old Bryant, we are talking about many gallons of water. There are no wet spots around the pump, at least none that he could see. I put the hydrometer on the vent and that got the same relative temperatures to the mercury thermometer.

The last reading last night was 77 deg and 55 Hum inside and 73 deg and 94 Hum outside. Thermostat was left at 77 deg. This morning 4 readings in side temp 77 deg and Hum 55-56 inside, outside temp 73-77 and Hum 84-96 Still no condensate.