The COP values listed below are often too small, since hot water was being used while the heat pump was working, replaced by fresh cold water. They are calculated using the formula

cop = f * (Te - Tb) / C

with

C = consumption in kWh
Tb = temperature begin in K
Te = temperature end in K
f = 0.3382066667 = (4184 * 291) / (3600 * 1000)

where

c = 4184 J/(kg k) specific heat capacity of water
mass = 291 kg for 291 litres of water
1 kWh = 3600 * 1000 Joule

Time	W°C	A°C	P(W)	kWh	ΔkWh	COP	h	Note
12 18:30	15		31	1.0
12 19:00	17		354	1.1
12 19:30	20		370	1.3
12 20:30	25		385	1.6
12 21:00	29		403	1.9
12 21:30	30		404	2.0
12 22:00	34		406	2.3
12 22:30	36		421	2.5
12 23:00	38		428	2.7
13 08:00	38		0	2.7
13 08:30	38		434	2.8
13 09:00	38		427	2.9
13 10:00	40		434	3.3
13 11:30	46		475	3.9
13 13:00	52		0	4.7
13 14:00	52		520	4.7
13 14:30	54		520	5.0
13 16:30	54	17	531	5.0	4.0	3.2	11
14 09:50	32		322	5.0
14 10:30	28		371	5.3
14 11:40	37		412	5.8
14 12:30	42		432	6.2
14 13:30	44		464	6.5
14 14:50	49		497	7.2
14 15:30	52		515	7.5
14 16:10	56		537	7.9
14 16:30	57		546	8.1
14 17:00	59	17	553	8.3	3.3	3.1	6
15 12:00	35		0	8.4
15 12:40	35		368	8.5
15 13:50	38		408	9.0
15 14:40	40		431	9.3
15 16:50	49	19	496	10.3	1.9	2.5
15 17:10	51	19	507	10.5	2.1	2.6	5
16 11:40	17	19	0	10.5	0.0
16 12:00	17	19	307	10.5	0.0
16 12:10	19	19	344	10.6	0.1
16 13:00	25	18	376	10.9	0.4	6.7	1
16 14:10	32	17	406	11.3	0.8	6.3	2
16 15:10	37	16	432	11.7	1.2	5.6	3
16 15:30	37	16	432	11.7	1.2	5.6	3.5
16 14:00	41	16	452	12.1	1.6	5.1	4
17 09:40	37	18	30	12.1	0.0		0
17 09:55	36	18	348	12.1	0.0		0
17 10:20	36	17	385	12.3	0.2		0
17 11:20	40	16	432	12.7	0.6	2.2	1
17 12:00	43	17	453	13.0	0.9	2.6	2
17 12:46	46	17	474	13.3	1.2	2.8	3
17 14:00	51	17	503	13.9	1.8	2.8	4
17 15:00	56	17	537	14.5	2.4	2.8	5
17 15:30	58	17	547	14.7	2.6	2.9	5.5
17 15:40	58		0	14.7	2.6
17 15:50	58		30	14.7	2.6
17 16:00	58		517	14.7	2.6
17 16:20	59	19	554	14.9	2.8
17 16:40	59	19	558	15.0	2.9	2.7	6
17 17:10	61	17	571	15.2	3.1	2.7	7
19 17:30	44		426	18.3	3.1
19 18:20	46		460	18.8	0.5	1.4	1
20 12:10	39	18	30	18.8			0
20 12:20	39	18	337	18.8
20 12:30	39	18	354	18.8
20 12:50	39	17	391	19.0
20 13:20	39	19	418	19.2
20 14:20	44	19	453	19.6
20 14:40	46	19	465	19.8
20 15:00	48	19	475	19.9
20 15:30	50	19	489	20.2	1.4	2.7	3
21 10:35	36	20	30	20.3			0
21 10:55	36	18	351	20.3
21 11:25	32	19	375	20.5
21 12:05	36	19	406	20.7
21 13:50	47	21	481	21.6
21 14:30	49	21	503	21.9	1.6	3.6	4
21 15:10	53	21	527	22.2	1.9	3.7	4.5
21 15:50	57	22	555	22.6	2.3	3.7	5
21 16:20	59	22	572	22.9	2.6	3.5	5.5
21 17:00	62	22	596	23.3	2.7	3.8	6
22 08:55	50	21	31	23.3			0
22 09:00	45	20	344	23.4
22 09:30	41	21	0	23.5			0.5
22 11:10	40	21	31	23.5			0
22 11:30	40	21	393	23.6
22 12:50	46	23	471	24.2
22 13:40	51	24	514	24.7
22 14:20	55	23	0	25.0	1.5	3.4	3
23 11:20	38	22	31	25.1			0
23 11:30	38	22	338	25.1			0
23 12:00	38	22	386	25.3
23 14:20	49	22	506	26.4	1.3	2.9	3
23 15:10	54	23	537	26.9	1.8	3.0	3.6
23 15:50	57	22	555	27.2
23 16:10	59	23	564	27.4
23 17:00	62	22	591	27.8	2.7	3.0	5.5
24 12:45	33	21	30	27.9			0
24 14:00	36	20	411	28.3			0
24 15:20	44	19	458	28.9			2.5
24 16:00	48	19	482	29.2	1.4	3.6	3
25 04:30	22			29.2			0
25 07:00	35			30.1	0.9	4.9	2.5
25 11:40	36	20	31	30.1	0		0
25 12:00	36	19	376	30.2	0		0
25 12:40	38	19	414	30.4	0
25 13:40	43	20	447	30.9	0.8	3.0	2
25 17:00	57			32.6	2.5	2.8	4
26 11:40	36	21	30	32.6			0
26 11:50	36	21	320	32.6			0
26 13:00	36	21	408	33.1			1
26 14:00	44	22	408	33.5			2
26 15:50	50	22	498	34.3	1.7	2.8	4
2023-08-31	45	22	451
2023-08-31	46	21	468
2023-08-31	47	21	483
2023-08-31	49	21			0.8	1.3
2023-09-01 13:00	39	22	417	175.6
2023-09-01 14:20	43	21	467	176.0
2023-09-01 15:20	45	22	477	176.3
2023-09-01 15:50	47	22	496	176.5
2023-09-01 16:10	49	22	506	176.7
2023-09-01 16:40	51	22	521	176.9	1.3	3.1	4
2023-09-02 12:50	60	24	512	178.7
2023-09-02 13:30	60	24	557	179.1
2023-09-02 14:00	62	25	587	179.4
2023-09-02 15:00	65	25	587	179.8	2.1	0.8	2
2023-09-04 12:10	47	23	432	181.4			0
2023-09-04 17:10	65	25	432	184.0	2.6	2.3	5
2023-09-05 12:20	52	24	325	184.1			0
2023-09-05 15:50	60	27	582	185.9
2023-09-05 17:20	65	27		186.8	2.7	1.6	5
2023-09-06 12:30	26	24	322	186.8			0
2023-09-06 15:20	43	25	478	187.8	1.0	5.7	3
2023-09-06 17:10	52	25		188.7	1.9	3.4	3
2023-09-07 12:00	27	23	30	188.8
2023-09-07 13:40	37	26	450	189.4	0.6	5.6
2023-09-07 15:00	46	27	505	190.0	0.6	5.0	3
2023-09-07 16:00	50	27	535	190.5	0.5	2.7	4
2023-09-07 16:40	55	27		190.9	0.4	4.2	4.5
2023-09-08 12:10	44	24		190.9			0
2023-09-08 12:50	44	26	442	191.1			0.5
2023-09-08 14:40	49	27	516	192.0	1.1	1.5	2.5
2023-09-08 15:50	53	27	520	192.6	0.6	2.5	1
2023-09-08 16:30	56	27	551	193.0
2023-09-08 16:50	57	27	568	193.1
2023-09-08 17:20	59	27	568	193.3	0.7	3.4	5
2023-09-09 16:20	63	27	608	195.5
2023-09-21 12:20	37	23	372	214.4			0
2023-09-21 13:20	39	23	447	214.8	0.4	1.7	1
2023-09-21 14:00	45	23	485	215.1	0.7	3.9	2
2023-09-30 16:30				234.3	7.5
2023-10-01 10:30				234.4	0.1
2023-10-01 21:30				236.7	2.3
2023-10-04 06:40				241.5	4.8
2023-10-04 19:20				243.5	2.0		4	to heat from 48 degrees to 58 degrees in 4 hours
2023-10-05 16:30				245.8	2.3		4.5	to heat from 48 degrees to 59 degrees in 4.5 hours
2023-10-06 03:00	38			245.8			0
2023-10-06 06:00	47			247.1	1.3	2.3	3	to heat from 38 degrees to 47 degrees in 3.0 hours overnight
2023-10-06 12:00	46			247.1			0	to heat from 38 degrees to 47 degrees in 3.0 hours overnight
2023-10-06 16:00	60			249.1	2.0	2.4	4
2023-10-07 12:30	55	21	422	249.3			0
2023-10-07 13:00	55	20	422	249.3			0.5
2023-10-07 13:30	55	20	513				1.0
2023-10-07 14:20	58	21	562				2.0
2023-10-07 15:40	64	21	614	251.0			3.0
2023-10-07 15:50	65	21	614	251.2	1.8	1.9	3.0	heat from 55 to 65 degrees in 3 hours
2023-10-19 12:40	43	17	415	271.6			0.5
2023-10-19 14:10	48	16	481	272.3	0.7	2.4	2.0	heat from 43 to 48 degrees in 2 hours
2023-10-19 14:30	50	16	0	272.4	0.8	2.6	2.5	heat from 43 to 50 degrees in 2.5 hours