Company lists · Data refreshed September 2026

Top 25 Geothermal system companies based in Australia

Name: Geothermal system companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 123 companies tracked

RevenueBase identified 123 geothermal system companies headquartered in Australia as of September 2026 and tracks 973 professional contacts across them, including 384 with verified work emails. Melbourne is the largest hub.

This list covers geothermal system companies headquartered in Australia, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

123Companies

973Contacts tracked

384Verified emails

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The 25 largest geothermal system companies based in Australia

Ranked by team size

Top 25 of 123 geothermal system companies based in Australia, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to geothermal system companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Rinnai Australia	Indirect evidence	Braeside, AustraliaHQ checked Sep 20, 2026	201-500	294 contacts →
	Indirect evidence “Following Rinnai's international origins dating back more than 100 years, Rinnai Australia was established 50 years ago and since then has been providing Australians with the best…” Source: RevenueBase Database · checked Sep 20, 2026
2	Automatic Heating Global PTY LTD	Indirect evidence	Epping, AustraliaHQ checked Sep 20, 2026	51-200	56 contacts →
	Indirect evidence “Celebrating 100 years in 2026, Automatic Heating is Australia's leading provider of commercial heating and hot water solutions.” Source: RevenueBase Database · checked Sep 20, 2026
3	Envirogroup	Partial evidence	Coburg North, AustraliaHQ checked Sep 20, 2026	11-50	30 contacts →
	Partial evidence “EnviroGroup EnviroGroup is a specialist provider of renewable energy products and systems for commercial applications, government clients and residential home owners.” Source: RevenueBase Database · checked Sep 20, 2026
4	Glow Heating Cooling Electrical	Indirect evidence	Warradale, AustraliaHQ checked Sep 20, 2026	51-200	24 contacts →
	Indirect evidence “Glow Heating Cooling Electrical has been delivering quality service to our commercial and residential customers in South Australia for over 25 years.” Source: RevenueBase Database · checked Sep 20, 2026
5	Alliance Climate Control	Indirect evidence	Alexandria, AustraliaHQ checked Sep 20, 2026	51-200	22 contacts →
	Indirect evidence “Alliance Climate Control is dedicated to your year round comfort and life style.” Source: RevenueBase Database · checked Sep 20, 2026
6	Perth Solar Force	Indirect evidence	Wangara, AustraliaHQ checked Sep 20, 2026	51-200	21 contacts →
	Indirect evidence “We started in 2013 as RJB Electrical, specialising in all things electrical including solar, lighting, fans, air cons and cabling.” Source: RevenueBase Database · checked Sep 20, 2026
7	Eco33 Private Limited	Indirect evidence	Perth, AustraliaHQ checked Sep 20, 2026	11-50	20 contacts →
	Indirect evidence “providing customers the benefits of cost effective Energy Conservation solutions including improved indoor Air quality, proposed outcome 100% commercially guaranteed.” Source: RevenueBase Database · checked Sep 20, 2026
8	EVO Energy Technologies	Indirect evidence	Bundamba, AustraliaHQ checked Sep 20, 2026	11-50	15 contacts →
	Indirect evidence “Evo Energy Technologies is an Australian-owned energy solutions company based in Brisbane, delivering low-emission and high-efficiency infrastructure for industrial, commercial…” Source: RevenueBase Database · checked Sep 20, 2026
9	Hunt Heating	Indirect evidence	Keysborough, AustraliaHQ checked Sep 20, 2026	11-50	15 contacts →
	Indirect evidence “Hunt Hydronic Heating is Australia’s number one provider of premium hydronic heating and hydronic cooling solutions for your home or business.” Source: RevenueBase Database · checked Sep 20, 2026
10	Devex Systems	Partial evidence	Mona Vale, AustraliaHQ checked Sep 20, 2026	11-50	15 contacts →
	Partial evidence “At Devex Systems, we specialise in heating & cooling solutions for new and existing buildings in residential, commercial and industrial environments.” Source: RevenueBase Database · checked Sep 20, 2026
11	Empower Solar Australia	Indirect evidence	Canning Vale, AustraliaHQ checked Sep 20, 2026	11-50	14 contacts →
	Indirect evidence “Empower Solar Australia (ESA) is proudly a local Western Australian owned and operated business.” Source: RevenueBase Database · checked Sep 20, 2026
12	Luxury Heating & Cooling	Partial evidence	Sydney, AustraliaHQ checked Sep 20, 2026	1-10	9 contacts →
	Partial evidence “At Luxury Heating and Cooling, we provide specialist central heating and air conditioning systems for premium residential property.” Source: RevenueBase Database · checked Sep 20, 2026
13	Yanmar Energy Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	7 contacts →
	Indirect evidence “Yanmar began building engines in Japan over 100 years ago with a mission to provide sustainable and innovative solutions aimed at serving the needs of people whilst conserving…” Source: RevenueBase Database · checked Sep 20, 2026
14	DTI Group	Indirect evidence	Rockdale, AustraliaHQ checked Sep 20, 2026	51-200	7 contacts →
	Indirect evidence “The last two decades has seen the world undergo a complete transformation in the way business is conducted.” Source: RevenueBase Database · checked Sep 20, 2026
15	Australian Airconditioning Services	Indirect evidence	Malaga, AustraliaHQ checked Sep 20, 2026	51-200	6 contacts →
	Indirect evidence “Established in 1978, Australian Airconditioning Services has become associated with quality, technical expertise and innovation in all aspects of installation, service and…” Source: RevenueBase Database · checked Sep 20, 2026
16	Frazer AIR	Indirect evidence	Thomastown, AustraliaHQ checked Sep 20, 2026	11-50	6 contacts →
	Indirect evidence “At Frazer Air, we specialise in delivering smart, efficient heating and cooling solutions for residential homes and large-scale building projects.” Source: RevenueBase Database · checked Sep 20, 2026
17	Sackett Services PTY LTD	Indirect evidence	Cambridge, AustraliaHQ checked Sep 20, 2026	11-50	5 contacts →
	Indirect evidence “Sackett Services began trading in 1992, and during this time has built a reputation for suppling, maintaining, providing quality products and workmanship.” Source: RevenueBase Database · checked Sep 20, 2026
18	Coolcats AIR Conditioning And Mechanical Services	Partial evidence	Caringbah, AustraliaHQ checked Sep 20, 2026	11-50	5 contacts →
	Partial evidence “CoolCats - A modern day Commercial Air Conditioning and Building Services Company distinguished by its unparalleled expertise in the industry and cutting-edge systems.” Source: RevenueBase Database · checked Sep 20, 2026
19	Environmental Energy Services	Indirect evidence	Moolap, AustraliaHQ checked Sep 20, 2026	1-10	5 contacts →
	Indirect evidence “We research, design, develop, test and demonstrate products that apply renewable resources, achieving energy efficient conditioning while providing optimal comfort in buildings.” Source: RevenueBase Database · checked Sep 20, 2026
20	Renew Energy Solar Power And HOT Water Perth	Partial evidence	Forrestdale, AustraliaHQ checked Sep 20, 2026	11-50	5 contacts →
	Partial evidence “One of Perth’s most experienced Solar Experts, the Renew Energy team have been specialising in Solar Energy, Solar Hot Water and Rheem Hot Water systems since 2002.” Source: RevenueBase Database · checked Sep 20, 2026
21	Clean NRG Solar Specialists For Solar Panel & Battery Storage In Perth	Indirect evidence	Osborne Park, AustraliaHQ checked Sep 20, 2026	11-50	4 contacts →
	Indirect evidence “At Clean NRG Solar we are proud to say that we are a Western Australian-owned family Company.” Source: RevenueBase Database · checked Sep 20, 2026
22	CWL Group	Strong evidence	Miranda, AustraliaHQ checked Sep 20, 2026	11-50	4 contacts →
	Strong evidence “CWL Group are industry leaders in Geothermal Exchange heating and cooling, integrated heating systems and hydraulic projects across Greater Sydney and Southern Highlands.” Source: RevenueBase Database · checked Sep 20, 2026
23	Direct Energy Australia	Indirect evidence	West Perth, AustraliaHQ checked Sep 20, 2026	1-10	4 contacts →
	Indirect evidence “Direct Energy Australia is a diversified renewable-energy solutions company.” Source: RevenueBase Database · checked Sep 20, 2026
24	CK Electrical, Solar & Air-Conditioning	Indirect evidence	Coopers Plains, AustraliaHQ checked Sep 20, 2026	1-10	4 contacts →
	Indirect evidence “CK Electrical, Solar & Air Conditioning is Brisbane’s trusted provider of premium energy-efficient solutions.” Source: RevenueBase Database · checked Sep 20, 2026
25	Dawson Heating & Cooling PTY LTD	Indirect evidence	Queanbeyan East, AustraliaHQ checked Sep 20, 2026	11-50	3 contacts →
	Indirect evidence “Dawson Heating & Cooling is your trusted contractor for premium Heating and Cooling solutions.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: geothermal system companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names geothermal system companies.
Partial evidence: Its own public description names part of geothermal system companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geothermal system companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 123 geothermal system companies based in Australia

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Geothermal system companies based in Australia at a glance

As of Sep 20, 2026

39.5%Verified-email coverage

7.9Average contacts per company

11-50Median size (employees)

8.9%Largest-city concentration · Melbourne

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 123 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among geothermal system companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Australia whose own description of what they do matches “geothermal system companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names geothermal system companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among geothermal system companies, and records with no verified work email. Companies headquartered outside Australia are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 384 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names geothermal system companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many geothermal system companies are there based in Australia?

RevenueBase identified 123 geothermal system companies headquartered in Australia as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Rinnai Australia, headquartered in Braeside, tops this list with the largest team on record.

Which city has the most geothermal system companies?

Melbourne leads with 11 headquartered companies, followed by Perth (6) and Sydney (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 384 verified decision-maker contacts tracked across these 123 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.