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1-20 of 196 Results
  1. HVAC
    Hey, I have an old (but digital) Honeywell thermostat for my heating/air conditioning, and a separate humidistat for my air exchanger. I'm looking for a suggestion for a thermostat that will also control the air exchanger (one unit to replace the two). I'm hoping it will smartly control fresh...
  2. Electrical
    Hi all! Thanks for your help in advance. I am replacing a baseboard heater. I thought took a picture of the wiring but can’t find it. Basically I have 4 wires from the wall. Red black (live), another red, black that’s going to thermostat. I tried wiring it but thermostat is not turning off the...
  3. HVAC
    I'd love to add a delay (actually an interlock I think is a better approach) to my air handler's fan and heat-pump. My whole system is 24vac controlled, via a asdfasdfa thermostat. When it calls for heat-pump, the fan in the air handler starts immediately. But that blows cold air around the...
  4. HVAC
    I am replacing a failing iComfort Wi-Fi 10F81 thermostat with a newer Lennox iComfort S30. I have the SLP98V Furnace which I heard is a communicating furnace. The original iComfort Wi-Fi stat called for 24V, however the new S30 housing calls for 12V. A couple questions... Do I need to...
  5. Electrical
    Hi, I was wondering if someone could help me understand how to wire this transformer to my heat pump. The transformer takes 208/230V and produces a 24V wire (TR) that ultimately provides an R wire for a 24V thermostat, and a common wire (TC) that ultimately provides a C wire for a 24V...
  6. HVAC
    I dropped our thermostat when I was changing the batteries. A couple of the connections on the back of the unit broke, so I purchased a new thermostat. I installed the new thermostat, but it is not working. There is a control unit on the front of the boiler that has a built-in thermostat on the...
  7. HVAC
    Hi, This evening I set my thermostat to 74° and noticed the inside temperature was 76. I have had some issues with the drain line and I need to relocate it so it can drain better. But I have been vacuuming out the drain line to collect any water or debris. If I set my thermostat to 75°, the...
  8. HVAC
    I want to replace my central HVAC thermostat with one that can be monitored and changed via WIFI. It doesn’t need to be programmable because occupancy is not a predictable pattern. My 3-ton single HVAC system is at least 20 years old. I do not want to let the POCO turn off my HVAC due to grid...
  9. HVAC
    Looking for some help wiring my google nest. A bit confused about the emergency heat, heat pump, and aux. Aslo what should I use as the common? Thanks!
  10. HVAC
    I live in a 30 year old home with 4 heating zones and 1 boiler zone. The heating zones are controlled by old Honeywell round, mercury thermostats. One of these has stopped working. I purchased what appeared to be a modern replacement for that thermostat. I installed it but it didn’t work. After...
  11. HVAC
    DISCLAIMER: I HAVE NO IDEA WHAT IM DOING AND TERMINOLOGY WILL SOUND LIKE JAPANESE TO ME SO PLEASE BEAR WITH ME. I have an Oil burning furnace... If the house gets chilly, I'd go to the thermostat and raise the temperature, hear a click, then hear the furnace fire up. As of about last week I...
  12. HVAC
    Installed a Sensi smart thermostat on an electric heat pump the other day and for the first few days it worked just fine. Yesterday it wouldn’t turn off the heat. Heat and blower kept running. Had to shut it off at thee breaker. Called a tech who came today and said the limit switch...
  13. HVAC
    Ok so many thanks to anyone patient enough to even listen to this. Im running a lennox CBA25UHV 024 230A02 with a single Honeywell T6 pro thermostat. The air handler itself runs tip top, the problem is with the thermostat. The thermostat is set 5 feet above the ground on the hallway directly...
  14. HVAC
    I am interested in installing a smart thermostat, so I am doing some research into my current furnace/AC and thermostat wiring. I moved into the house a year ago and have not changed the wiring. AC seemed to work fine in the summer. Heat worked fine last winter, but in the last month I have...
  15. Electrical
    Hello, I am trying to swap a danfoss icon thermostat that connect to my wiring center to another that has zigbee support. I tried t wire it up but at first it seems to power up although when trying to put LOAD as in starting to heat the wiring center doesn't detect anything and is not opening...
  16. HVAC
    We have a Carrier furnace (59TN6A) and air conditioner (24ABB3/24ABC6) paired to a Carrier COR 7C (TSTWRH01) thermostat. The outside temperature reported on the thermostat is incorrect...mostly only happens in cold weather. For example it is 28 degrees F outside right now but it is reporting...
  17. HVAC
    Hi! New homeowner here. I apologize for the length of this post - I'm not super well versed in wiring/HVACs so may have included things that aren't relevant. Thanks in advance for any help you can provide!! I recently purchased an Ecobee4 thermostat to replace the honeywell battery powered...
  18. HVAC
    I don't need a "smart" thermostat, just a simple one that can wirelessly control a relay module in the basement to turn on and off a valve in an old, hot water boiler system used for baseboard heat. Somehow the wiring in the wall between the upstairs and basement got damaged during some...
  19. HVAC
    We have a Honeywell RTH9598 WiFI Thermostat. It allows setting Awake, Leave, Return, Sleep. Our local utility, SCE, has a program that is supposed to "save energy," but it looks to me it's really designed to increase their profits. They have a 3rd party contractor that lists specific thermostat...
  20. HVAC
    Hello, I recently installed a mr cool cool universal 4-5ton system with auxiliary heat strip for my house. Everything is wired up and the a/c works great as does the fan. I have Not been able to get the heat to come work though. When the heat is turned on nothing happens at the air handler or...
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