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T1 vs T3 vs T6 In Floor Heat only

joshavan
joshavan Member Posts: 7
in Thermostats and Controls

Looking at non-programmable thermostats for my in-floor heat only. I don't really see much difference in the T1 and T3. The T6 adds programing abilities that I don't need unless the algorithm it uses is better for hydronic heat. No in-floor/slab sensors.

If the algorithms for cycles per hour and heating are all the same I see no reason to go T6 and I should just pick the T1 or T3.

Comments

  • joshavan
    joshavan Member Posts: 7

    Leaning towards T1 in most areas like bedrooms bathrooms....

  • Ironman
    Ironman Member Posts: 7,659

    You should use the T6 HYDRONIC stat with no setback for radiant floors.

    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • joshavan
    joshavan Member Posts: 7

    I don't have slab sensors would the t6 hydronic do any better than those without a slab sensor?

  • Ironman
    Ironman Member Posts: 7,659

    Yes, its algorithms are designed specifically for radiant floors.

    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • GroundUp
    GroundUp Member Posts: 2,274
    https://forum.heatinghelp.com/discussion/comment/1819813#Comment_1819813

    Can you elaborate a little on this please? I have a T6 hydronic in my garage and a basic Pro1000 in the other garage, but can't tell any difference in performance. What sort of algorithm are you referring to?

  • joshavan
    joshavan Member Posts: 7
    edited November 2024
    https://forum.heatinghelp.com/discussion/comment/1819813#Comment_1819813

    The only thing I see that it has is the Adaptive Intelligent Recovery which would just be recovering from setbacks nothing that would help manage the heat at a consistent level, but I could be wrong.

  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 10,085

    @Ironman That is an interesting comment. I remember going to Honeywell sponsered classes when Flame Rectification controls became popular in the 1970s. I didn't have a complete understanding at the tile but I remembered that the ground circuit from the flame back to the control was important and that the flame conducted electricity. But I could not explain the technical points about the current being rectified from an AC current to a DC current and all that goes into that.

    So I'm wondering if you have attended a class or seminar that explained the algorithm and why it is better for Hydronic systems. I believe that there could be something about how the thermostat reacts to overshooting temperatures and calling for heat to late if it were just a forced air thermostat set at 6 CPH. I was still attending seminars and even teaching seminars when Intelligent recovery was being added to Chronotherms. I also remember that one manufacturers representative commented the Honeywell missed the boat whey they introduced the Lyric by calling that feature Adaptive Intelligent Recovery. NEST just said it was a Smart Thermostat. Simple and to the point for the general public. Lyric came out first as I remember so they could have used "Smart Thermostat"

    There I go rambling again…. To sum up, I was wondering how you know the T6 is better than the T1 or T3.

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

  • Ironman
    Ironman Member Posts: 7,659

    I’m not by any means qualified to explain algorithms. That’s simply what I was told by my Honeywell rep. Ed probably explained it best.

    We’ve been using the T6 hydronic stat for about 5 years with no issues after switching from Tekmar’s 519 which we had problems with.

    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • joshavan
    joshavan Member Posts: 7

    @EdTheHeaterMan So if I am understanding you correctly to the best of your knowledge, in my use case since I don't need a programable thermostat and I don't have floor sensor the T1 would operate no different?

  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 10,085

    In my opinion, that is true. But A Honeywell Rep seems to think differently according to @Ironman. But They make more money on the higher priced thermostat. Sooo. there is that!!!

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

  • GroundUp
    GroundUp Member Posts: 2,274

    Tekmar stats in general are garbage, IMO. Not to take away from the T6 because it is a great thermostat, but personally I have not found any temperate benefit to a T6 compared to any other Honeywell stat. Obviously the basic Pro1000 and such are cheaper and therefore a little less precise, but I've got hundreds of them out there without a complaint. I put the T6 in my garage simply to play with the floor sensor which I never use anymore, but it maintains an almost identical performance on air sensing mode to the T4 that preceded it.

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