Normal Delta_T For Heat Pump System?

[BBDartCA]

What is the normally accepted range Delta T between supply & return on the heating side of a heat pump system? My new system was giving about 22F degrees when it was low 50's outside ambient, but barley gives a max delta of 10F when its low 40's outside. Thanks!

[pacnw]

.

[ACFIXR]

switch the fan to auto and system to heat:yes:

[BaldLoonie]

Sounds very low. Typical 20+ at 30 out, close to 30 degree rise at 50 out with proper airflow.

[beavercreekhc]

with a bryant h/p and an electric air handler with no heat strips running i was getting a 32 degree F split with a 20 degree F temp. outside

[Gimmered]

My Nordyne will give me 20.3° at 17°.

[chuckcrj]

Sounds very low. Typical 20+ at 30 out, close to 30 degree rise at 50 out with proper airflow.

See the key words; Proper Airflow.

[Paul12644]

I had a new Lennox G71MPP furnace and XP14-042 heat pump installed a month or so ago. The Delta T at 55 degrees exterior temperature with the heat pump running was 40.

[crmont]

What is the normally accepted range Delta T between supply & return on the heating side of a heat pump system? My new system was giving about 22F degrees when it was low 50's outside ambient, but barley gives a max delta of 10F when its low 40's outside. Thanks!

Call 'em back!

What's you model numbers?

[gary_g]

What is the normally accepted range Delta T between supply & return on the heating side of a heat pump system? My new system was giving about 22F degrees when it was low 50's outside ambient, but barley gives a max delta of 10F when its low 40's outside. Thanks!

Tech Operating Data for my 3-ton, 14 SEER, 9 HSPF pump:

Ambient-------Temp after indoor coil
Temp-------(based on 70F return air temp)

60F---------------105.8F
50F---------------101.5
40F---------------97.1
30F---------------93.4
20F---------------89.9
10F---------------86.2
0F----------------82.6


Take care.

[pacnw]

Tech Operating Data for my 3-ton, 14 SEER, 9 HSPF pump:

Ambient-------Temp after indoor coilambient usually refers to outdoor temp unless otherwise specified
Temp-------(based on 70F return air temp)

60F---------------105.8F
50F---------------101.5
40F---------------97.1
30F---------------93.4
20F---------------89.9
10F---------------86.2
0F----------------82.6
if I were to read CAREFULLY you are saying that, for example, an ambient(outdoor) temp of 0*F with a return air temp of 70* gives you a supply temp of 82.6*F or 12.6* temp rise/delta T

Take care..

[gary_g]

.

You are reading the columns incorrectly.

Ambient temps are in the column going from 60F to 0F, with the corresponding coil temp in the column next to each ambient temp.