# CTSmall heat pump controller > Remote heat pump controller for temperature management and smart home integration. (iPhone/iPad app by Flemming Veng.) - Source: https://appshunter.io/ios/app/ctsmall-heat-pump-controller/id868825104 (this page in markdown: same URL + `.md`) - Developer: [Flemming Veng](https://appshunter.io/developer/868825107) - Category: Utilities - Price: Free - Rating: 3.00/5 from 2 App Store ratings - Age rating: 17+ - Requires: iOS 7.0 · 11 MB - Languages: American English - Released: 2014-05-08 - Data updated: 2026-06-08 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/ctsmall-heat-pump-controller/id868825104/reviews.md ## What is CTSmall heat pump controller? Reduce Your Electrical Bill. Take the control over the temperature with CTSmall. With CTSmall, you can control your heating pump remotely no matter wherever you are. You can, for example, turn on, off and change the temperature in your summer house with the app or SMS, without being there physically. CTSmall works with the majority of the heat pumps from leading manufacturers. If you have the extension box, you can control two relay output's, maybe for your water heater, floor heat, or other. Smart heat pump controller, with a lot of feathers. Arrived to a nice warm home. Also works as power guard, and provides alarm output. Possibility for controlling two relay's too. Possibility of 4 emergency numbers. CTSmall is a stable and smart product to your heat pump... You must have a CTSmall controller from Climatech.dk. There are two events in the CTSmall controller, so you can define some action on the extension box, or you heat pump. The event system must be activated in the main setup screen before it will show up. All features can be assigned from the app. CTSmall support more then 35 heat pump brand. More information at http://www.CTSmall.eu ## Key features - Remote heat pump control - Temperature adjustment - Control of two relay outputs - Power guard functionality - Alarm output - Supports over 35 heat pump brands - Event system for custom actions ## Frequently asked questions about CTSmall heat pump controller ### What is CTSmall? CTSmall is a smart heat pump controller that allows you to manage your heating and cooling remotely. It works with a CTSmall controller from Climatech.dk and supports over 35 heat pump brands. ### Can CTSmall control more than just the heat pump? Yes, if you have the extension box, CTSmall can control two additional relay outputs. This can be used for devices like your water heater or floor heating. ### Does CTSmall have ads? No, CTSmall does not contain advertisements. It is a free application designed to provide control over your heat pump. ### What devices does CTSmall support? CTSmall is available for iPhone and iPod devices. It is designed for users who have a compatible CTSmall controller installed. ### How often is CTSmall updated? The latest version of CTSmall is 1.2, which was last updated on October 6, 2016. Information on update frequency beyond this is not available. ### What is the age rating for CTSmall? CTSmall has an age rating of 17+. This is based on the content and features available within the application. ### What is the user rating for CTSmall? CTSmall has a user rating of 3.0 stars from 2 ratings. This indicates a mixed reception from its current user base. ### Can I set up custom actions with CTSmall? Yes, CTSmall features an event system that allows you to define specific actions on the extension box or your heat pump. This system must be activated in the main setup screen. ## Version history (last 3 releases) ### 1.2 — 2016-10-06 Denne app er blevet opdateret af Apple, så den viser Apple Watch‑appsymbolet. Bug fixed - New features: Event system (only from CTSmall fw.:1.5.8). Bug and Correction: You can add as many profiles and CTSmall controllers you like. The phone number can be changed after a profile is created. The Brand can be changed after a profile is created. More help text to some input field. The last used Heat, Cool, and Temperature is saved to the active profile. GUI correction. Code clean up and Bug fix. ### 1.1 — 2016-08-05 New features: Event system (only from CTSmall fw.:1.5.8). Bug and Correction: You can add as many profiles and CTSmall controllers you like. The phone number can be changed after a profile is created. The Brand can be changed after a profile is created. More help text to some input field. The last used Heat, Cool, and Temperature is saved to the active profile. GUI correction. Code clean up and Bug fix. ### 1.0 — 2014-05-08 No release notes. ## Apps similar to CTSmall heat pump controller | App | Rating | Price | Category | | --- | --- | --- | --- | | [Strømlinet](https://appshunter.io/ios/app/strmlinet/id6746048493) | — | Free | Utilities | | [Meterportal](https://appshunter.io/ios/app/meterportal/id1667480418) | — | Free | Utilities | | [AirPatrol - Smart AC control](https://appshunter.io/ios/app/airpatrol-smart-ac-control/id503563831) | 2.6 (16) | Free | Utilities | | [TEKNIQ](https://appshunter.io/ios/app/tekniq/id1252551935) | — | Free | Utilities | | [Mit digitale selvforsvar](https://appshunter.io/ios/app/mit-digitale-selvforsvar/id1218846009) | 5.0 (1) | Free | Utilities | | [ello](https://appshunter.io/ios/app/ello/id1663765675) | — | Free | Utilities | ## Related topics [ctsmall heat pump controller](https://appshunter.io/ios/topics/ctsmall-heat-pump-controller) · [flemming veng](https://appshunter.io/ios/topics/flemming-veng) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-08.*