IoT Development Company

PassivSystems

Smart thermostat and software for heat pumps, supplied to installers and homeowners

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TrustList summary

PassivSystems has developed smart-home technology since 2008. Its current focus is the Passiv Smart Thermostat, designed to work with heat pumps. The company began with energy and has also worked on security and assisted living.

Services

Passiv Smart Thermostat: in-home controls and a smartphone app for managing a heat pump.
Tariff optimisation: adjusts heating to smart energy tariffs and solar PV.
Passiv Portal: an installer tool for monitoring installations remotely and spotting issues early.
Partnerships: integration with manufacturers and work with energy companies.

Clients

Heat pump installers, manufacturers, energy companies, and distributors of domestic systems, as well as homeowners.

Key facts

Founded: 2008
Team: entrepreneurs, technologists, designers and energy and communications specialists

Summary written by TrustList from the business's own published information, Oct 2026.

Categories & features

PassivSystems rankings

PassivSystems is ranked on 1 TrustList ranking at #15.

Every ranking orders its listings by their reviews, how complete the profile is and the Trust Score. PassivSystems has no reviews yet and 3 of the 10 profile details we look for. Where no listing on a page has been reviewed, the order follows the profiles alone.

Iot development company · 1 ranking

#15of 39
Ui ux design
It is the only one of the 39 here listing HTML and search engine optimization.
Of the 39 here, 27 also cover web development and 26 also cover iOS app.
Behind BiTE interactive, ahead of WFS Technologies Ltd.

As of 2026-11-15. Organic ranks only; sponsored placements are never ranks. How TrustList ranks