# Beestat does not account for HVAC system changing from furnace/AC to heat pump
**URL:** https://community.beestat.io/t/beestat-does-not-account-for-hvac-system-changing-from-furnace-ac-to-heat-pump/635
**Category:** Bug Reports
**Created:** [February 20, 2022, 4:33am UTC](https://community.beestat.io/t/beestat-does-not-account-for-hvac-system-changing-from-furnace-ac-to-heat-pump/635 "2022-02-20T04:33:58Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@skst](https://community.beestat.io/u/skst)
#### Post date: [February 20, 2022, 4:33am UTC](https://community.beestat.io/t/beestat-does-not-account-for-hvac-system-changing-from-furnace-ac-to-heat-pump/635/1 "2022-02-20T04:33:59Z")
From: [Heat Stage 1 suddenly became Aux Heat in Thermostat Summary - Bug Reports - beestat community](https://community.beestat.io/t/heat-stage-1-suddenly-became-aux-heat-in-thermostat-summary/445/10)
> For a heat pump, ecobee reports heating data in two columns: `compressor` and `aux`. The compressor column represents compressor runtime, and the aux represents aux runtime. Simple.
> For non-heat-pumps, ecobee reports heating data in one column: `aux`. This is a little bit confusing, but the aux column generally just represents heat generated at the furnace (heat strips, gas, whatever).
My gas furnace died, and I replaced it (and the A/C) with a heat pump with auxiliary resistance heat. Beestat’s _Thermostat Summary_ thinks I have always had a heat pump. You can see the gap where we had no furnace for a week (in winter! in Chicago!). Before that should be Stage 1 and 2 heat (orange), but it’s Stage 1 (orange), Aux 1 (red), and Aux 2 (dark red). Obviously, this is quite the edge case, but I thought I’d mention it.
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### Author:  [@ziebelje](https://community.beestat.io/u/ziebelje)
#### Post date: [April 7, 2022, 6:13pm UTC](https://community.beestat.io/t/beestat-does-not-account-for-hvac-system-changing-from-furnace-ac-to-heat-pump/635/2 "2022-04-07T18:13:42Z")
The charts all just look at the current configuration to determine how to interpret the columns. Not ideal I suppose, but there’s no mechanism for dealing with the historical data.
If you’d like, shoot me an email at [contact@beestat.io](mailto:contact@beestat.io) with your thermostat serial and I’d be happy to look into doing a one-time “move” of your data to make it align a little better with what actually happened. I’m not sure I’ve done this before so no promises, but I can take a look.
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### Author:  [@skst](https://community.beestat.io/u/skst)
#### Post date: [April 8, 2022, 5:31am UTC](https://community.beestat.io/t/beestat-does-not-account-for-hvac-system-changing-from-furnace-ac-to-heat-pump/635/3 "2022-04-08T05:31:36Z")
Thank you very much for your offer. I don’t think it’s worth your time though. There’s a clear demarcation between the two data sets, and I know what the previous configuration was, so I can do that mapping in my head. Plus, in ten months, it won’t matter anyway. 🙂
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### Author:  [@system](https://community.beestat.io/u/system)
#### Post date: [August 3, 2022, 1:05pm UTC](https://community.beestat.io/t/beestat-does-not-account-for-hvac-system-changing-from-furnace-ac-to-heat-pump/635/4 "2022-08-03T13:05:27Z")
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