NSW Live register data

ESS IHEAB: Commercial HPWH F16/F17 [ESC]

Every commercial heat pump water heater system accepted on the NSW Energy Savings Scheme registry, with the ESCs it creates under the IHEAB method. Switch between replacing gas, replacing electric and a new install, and filter by system size.

Systems are registered against a commercial peak load, so the largest numbers here simply belong to the largest systems. Use the peak load filter to compare systems of a similar size.

What does the heat pump replace?

Decommission an existing gas water heater or boiler serving a commercial building.

Brands

Postcode

Sets your zone and network region.

ESC price ($)

EnergyAE reference price.

Network region

Peak load (MJ/day)

Show dollar valueInclude end-dated models

Existing system capacity (kW)

New heat pump capacity (kW)

Where the new heat pump is larger than the system it replaces, both schemes scale the certificates by existing ÷ new. Leave blank to assume matched capacity. The register does not publish each model’s rated capacity, so this applies to every row equally.

EnergyAE reference ESC price, reviewed 2026-07-07 (live market feed unavailable). Edit to model a different price.

Models listed

351

of 364 on this board

Brands

42 registered

Sydney (Z3) range

8 to 3,273

Median 14 ESCs

Median value at $30/ESC

$420

Per installation, replace gas

How the register is spread in Sydney (Z3)

every registered model

Scroll the table sideways to see every zone.

#
1	3,273	—	14,865
2	3,057	2,928	8,581
3	2,979	2,737	8,280
4	2,946	2,740	8,189
5	2,611	2,434	7,439
6	2,533	2,417	7,097
7	2,483	2,309	6,933
8	2,315	2,322	6,852
9	2,304	2,223	7,148
10	2,161	2,118	6,198
11	2,086	1,774	8,261
12	2,032	1,750	7,645
13	1,904	1,629	6,495
14	1,899	1,805	5,408
15	1,803	1,567	7,265
16	1,784	1,800	5,196
17	1,768	1,623	4,938
18	1,693	1,551	5,165
19	1,690	1,591	4,788
20	1,667	1,333	6,674
21	1,664	—	7,435
22	1,661	1,601	4,744
23	1,575	1,505	4,520
24	1,561	1,471	4,818
25	1,505	—	6,777
26	1,497	1,280	5,174
27	1,495	1,524	4,562
28	1,387	1,297	3,870
29	1,306	1,267	3,828
30	1,302	1,027	5,050
31	1,291	1,166	3,625
32	1,255	—	5,933
33	1,240	1,176	3,439
34	1,237	—	5,718
35	1,203	993	4,247
36	1,201	—	5,604
37	1,183	956	5,364
38	1,180	922	4,667
39	980	938	2,798
40	977	—	4,229
41	923	751	3,875
42	918	852	2,556
43	900	783	3,629
44	886	865	2,572
45	864	732	3,039
46	677	577	2,550
47	625	—	2,957
48	615	641	1,889
49	611	497	2,521
50	601	—	2,761
51	591	—	2,716
52	590	463	2,309
53	567	442	2,269
54	563	—	2,450
55	557	426	2,228
56	520	503	1,483
57	516	517	1,502
58	495	471	1,380
59	455	—	1,988
60	438	405	1,247
61	213	114	760
62	213	114	760
63	213	114	760
64	213	114	760
65	195	82	690
66	195	82	690
67	195	82	690
68	195	82	690
69	19	16	103
70	19	16	103
71	18	16	123
72	18	15	104
73	18	15	104
74	17	15	113
75	17	15	97
76	17	15	97
77	17	16	105
78	17	16	105
79	17	15	136
80	17	15	136
81	17	11	1,400
82	17	11	220
83	17	11	280
84	17	11	327
85	17	11	420
86	17	11	440
87	17	11	560
88	17	11	840
89	17	11	1,120
90	17	15	1,370
91	17	15	274
92	17	15	411
93	17	15	548
94	17	15	822
95	17	15	1,096
96	17	11	140
97	17	15	137
98	17	11	110
99	17	16	240
100	17	16	243

Showing 100 of 351

Every figure is computed from the ESS Registry of accepted products, read on each site build (2026-09-22). This registry does not publish a snapshot date of its own. Certificates are created per zone against the one climate zone an installation sits in, so the zone columns are alternatives and there is no total to read across them. Sort by the zone you are installing in.

How these numbers are calculated

ESS Rule of 2009 Schedule F, Activities F16 and F17. Gas and electricity savings are each taken over a 12-year lifetime, converted at 3.6 GJ/MWh, then weighted by GasCCF 0.47 and ElecCCF 1.06, with the regional network factor 1.03 applied to the electricity term only.

RefElec = 365 × 0.905 × 1.05 × CPL ÷ 1000, the same commercial peak load basis as the VEU. The replaced-system efficiency is 0.788 and a new install is credited against 0.85.

CapacityFactor applies to F16 only: 1 where the new heat pump is no larger than the system it replaces, otherwise existing ÷ new.

Counts are capped at 5,000 certificates per item of end-user equipment (clause 9.9.5). Clause 9.9.1C treats heat pumps joined by manifold into one system as a single item, so the cap applies per system.

The ConfidenceFactor is 42 ÷ Peak Load, capped at 1, wherever a system’s average heat pump capacity (total capacity ÷ number of heat pumps) is below 10 kW, and it applies to F16 and F17. Note it carries no N, unlike the VEU LoadFactor, so it cuts a multi-heat-pump system several times harder. It is applied wherever the register row publishes a heat pump thermal capacity and heat pump count, and skipped and disclosed where it does not.

Products are listed under the brand and model number they carry on the register, which is not always the name a product is sold under. Source: ESS Registry of accepted products.

These are estimates for comparison and business-case purposes. A lodged claim depends on the installation, its climate zone, the product’s eligibility on the day the certificates are created, and the scheme rules then in force.

Your product is not on the register yet

Getting a heat pump water heater onto these registers means AS/NZS 4234 modelling, AS/NZS 2712 certification and a scheme application. We run that process end to end for manufacturers and importers.

Request a quote

Your product is listed and the figures look wrong

A registered figure reflects the system as it was modelled and declared, including its control settings and tank configuration. If it does not match how the unit is built or sold, that is worth looking at.

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