Company lists · Data refreshed September 2026

Top 25 Geothermal installation companies based in Australia

Name: Geothermal installation 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 82 companies tracked

RevenueBase identified 82 geothermal installation companies headquartered in Australia as of September 2026 and tracks 342 professional contacts across them, including 106 with verified work emails. Melbourne is the largest hub.

This list covers geothermal installation 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

82Companies

342Contacts tracked

106Verified emails

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The 25 largest geothermal installation companies based in Australia

Ranked by team size

Top 25 of 82 geothermal installation 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 installation 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	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
2	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
3	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
4	Off-Grid Energy Australia	Indirect evidence	Dudley Park, AustraliaHQ checked Sep 20, 2026	11-50	11 contacts →
	Indirect evidence “Off-Grid Energy Australia is a nationally accredited designer and installer energy storage solutions for residential and commercial applications.” Source: RevenueBase Database · checked Sep 20, 2026
5	Total Solar Solutions Australia	Indirect evidence	Bayswater North, AustraliaHQ checked Sep 20, 2026	11-50	8 contacts →
	Indirect evidence “Total Solar Solutions was established by A-Grade electrician Reece Kennedy when he experienced the great divide between solar sales companies and installers.” Source: RevenueBase Database · checked Sep 20, 2026
6	Australian Airconditioning Services	Partial evidence	Malaga, AustraliaHQ checked Sep 20, 2026	51-200	6 contacts →
	Partial 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
7	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
8	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
9	Coolcats AIR Conditioning And Mechanical Services	Indirect evidence	Caringbah, AustraliaHQ checked Sep 20, 2026	11-50	5 contacts →
	Indirect 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
10	Renew Energy Solar Power And HOT Water Perth	Indirect evidence	Forrestdale, AustraliaHQ checked Sep 20, 2026	11-50	5 contacts →
	Indirect 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
11	Soleira	Indirect evidence	Cheltenham, AustraliaHQ checked Sep 20, 2026	11-50	5 contacts →
	Indirect evidence “Soleira is a residential and commercial solar energy company that was founded in 2017 with the mission to help families and businesses save $10 billion dollars by 2023.” Source: RevenueBase Database · checked Sep 20, 2026
12	Hitech HOT Water	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	11-50	4 contacts →
	Indirect evidence “We provide energy-efficient hot water heat pumps for homes and businesses across NSW and VIC.” Source: RevenueBase Database · checked Sep 20, 2026
13	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
14	CWL Group	Partial evidence	Miranda, AustraliaHQ checked Sep 20, 2026	11-50	4 contacts →
	Partial 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
15	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
16	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
17	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
18	Geoexchange Australia	Partial evidence	North Sydney, AustraliaHQ checked Sep 20, 2026	1-10	3 contacts →
	Partial evidence “GeoExchange Australia Pty Ltd pioneered the ground source / geothermal heat pump industry in Australia.” Source: RevenueBase Database · checked Sep 20, 2026
19	Online AIR And Solar	Indirect evidence	Epping, AustraliaHQ checked Sep 20, 2026	11-50	3 contacts →
	Indirect evidence “At Online Air and Solar, we are passionate about delivering the best quality of home heating and cooling and solar energy systems.” Source: RevenueBase Database · checked Sep 20, 2026
20	Greener Race	Indirect evidence	Morley, AustraliaHQ checked Sep 20, 2026	11-50	3 contacts →
	Indirect evidence “Greener Race, Quality HVAC/R, Mechanical Services, BMS/Controls and Electrical Contradicting with a Green Focus on on efficiency decarbonisation.” Source: RevenueBase Database · checked Sep 20, 2026
21	Everwarm PTY LTD	Indirect evidence	Goulburn, AustraliaHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “Everwarm designs, supplies and installs renewable hydronic heating and cooling systems to residential and commercial customers in New South Wales, Australia.” Source: RevenueBase Database · checked Sep 20, 2026
22	SÓ Geothermal	Indirect evidence	Carrum Downs, AustraliaHQ checked Sep 20, 2026	11-50	2 contacts →
	Indirect evidence “SóGeo is at the forefront of sustainable energy solutions, offering Australians a comprehensive lifestyle heating and cooling system that's not only good for the planet but also…” Source: RevenueBase Database · checked Sep 20, 2026
23	Adam Solar PTY LTD	Partial evidence	Adelaide, AustraliaHQ checked Sep 20, 2026	1-10	2 contacts →
	Partial evidence “Established in 2011, Adam Solar is an Australian owned residential and commercial solar installation specialist based in Adelaide, South Australia.” Source: RevenueBase Database · checked Sep 20, 2026
24	Coastwide Solar	Indirect evidence	Gold Coast, AustraliaHQ checked Sep 20, 2026	11-50	2 contacts →
	Indirect evidence “CoastWide Solar is run by a local family who have been operating businesses on the Gold Coast for over 30 years.” Source: RevenueBase Database · checked Sep 20, 2026
25	Allasso Energy	Partial evidence	Subiaco, AustraliaHQ checked Sep 20, 2026	11-50	2 contacts →
	Partial evidence “Allasso Energy is developing geothermal energy as a source of firm, scalable and locally produced renewable power for Australia’s industry, regional communities and digital…” 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 installation 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 installation companies.
Partial evidence: Its own public description names part of geothermal installation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geothermal installation 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 82 geothermal installation companies based in Australia

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Geothermal installation companies based in Australia at a glance

As of Sep 20, 2026

31.0%Verified-email coverage

4.2Average contacts per company

1-10Median size (employees)

8.5%Largest-city concentration · Melbourne

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

10001+

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 82 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 installation 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 installation 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 installation 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 installation 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, 106 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 installation 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 installation companies are there based in Australia?

RevenueBase identified 82 geothermal installation 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?

Alliance Climate Control, headquartered in Alexandria, tops this list with the largest team on record.

Which city has the most geothermal installation companies?

Melbourne leads with 7 headquartered companies, followed by Perth (4) and Sydney (4).

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 106 verified decision-maker contacts tracked across these 82 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.