Just installed a Mega-Tek TS system in pump and dump and have some questions on efficiency. Old heat pump was a Tetco split system that died last month. Over the last 20 years I kept records on the Tetco and noticed the following. EWT (entering water temp.) usually 48 F here in northern WI. LWT (leaving water temp) average 41 F running 11 GPM  (gallons per minute). Duct temp average 91 F with room air temps at 68. So when heating I saw a average drop in water temp of 7 degrees.
New Mega-Tek system has cupro-nickel exchanger, 2 stage Copeland Scroll compressor using R-410a and variable speed fan. The EWT 48, LWT 45 at 11 GPM a 3 degree drop? Where is the efficiency?  Duct temp measured 79 with room air temp at 68. For a new modular unit it certainly doesn't seem to be as efficient as my old Tetco. Does anyone have data for similar units, lets say Climate Master, Econar, Hydron Module etc.? Would like to know what other systems can do running pump and dump and if this unit is running correctly. I would think 20 years of technology improvements would show big improvements in heating capabilities.

To tell if one is more efficient, you need to know how much power the new is using and how much heat you are getting compared to old one.

None of the data you posted will tell you anything about which is more efficient.

Perform an energy balance calculation: Need waterside flow and Delta T, Airside flow and Delta T, and unit amps. Are you certain of the 11 GPM flowing through the new unit. I wouldn't expect new and old to have the exact same flow characteristics. Airside delta T should be measured across the unit only to discount duct losses.

Will try and get more data, do know 11 GPM is correct have a flow meter and set flow to 11 GPM for comparison. 48 EWT and 45 LWT gives me a 3 degree drop in water temp.  Air temp in at filter which is right before heat exchanger is 63.7 and out 81.  Aux heat has cycled a couple of times never had that happen with old unit at this temp, currently here it's 3 degrees.

What tonnage unit? Water flow and Delta T suggest just 16,500 btuh being extracted.

With a split unit and those numbers I would begin to suspect refrigerant charge.

Did they reuse old lineset? If yes, did they prepare it properly for 410A. It is quite a procedure.

New system is not split. HydroHeat Mega-Tek TS model MT4V061XL-N-15K one piece modular unit 5 ton. Using Banana service tool to read temps of moboard. EWT 48 LWT 43 were talking a 5 degree Delta at 10 GPM measured with a Letro flow meter on line. Duct temp at system is 81.2 I would think 7 to 10 degree drop in water temp and at least 90 duct temps. Fan speed sensor reports low.

What is the entering air temp?

Problem resolved unit was not putting out per specs, system low on R-410a working fine now.

Low charge on a new package unit is not a sign of good mfg QC.