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1-19 of 179 Results
  1. 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...
  2. 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...
  3. 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...
  4. HVAC
    Guys… I need help tried installing the Amazon Alexa thermostat and the display is not turning on… It’s also weird because how I put it in the exact way my old thermostat was the compressor and then it will turn on but not the display. Also, I don’t have a blue wire I have the wires following...
  5. HVAC
    My house has central, forced air (20+yo Payne PG9MAA furnace). I’m looking to upgrade my home thermostat to an Ecobee smart t-stat. I currently have a Honeywell unit that works okay, but not great. The switch to the Ecobee is not my biggest concern though: I’m worried that the current wiring...
  6. HVAC
    I'm replacing a faulty thermostat with a new, simpler thermostat, and the thermostat terminal wiring diagrams are not complete enough for the replacement. The A/C system is a Trane TEM6A0B24 with heat pump and aux heat. On the new thermostat (Honeywell TH5110E) the blue, red, yellow, and green...
  7. HVAC
    I have a 3 valve system in my house, a thermostat for each of the 2 zones, the 3rd valve is for the hot water heater. Does anyone know what might be causing 2 issues with the system: 1) loud clanking, banging noises coming from (it seems like) several radiators in the house. This seems to happen...
  8. HVAC
    I understand that for most thermostats, the temperature sensor is within the thermostat itself. I purchase a new home in October that has a carrier system. I noticed that in the winter, as it got colder (almost always happens only when outside temp is below 30F) the system stays on well past...
  9. HVAC
    Running into some complications trying to install a new Nest Learning Thermostat to our old house boiler/radiant heat furnace. No a/c connection to our old mercury Honeywell thermostat. The basic question I am wondering: which all wires should show hot/voltage at the thermostat end? Current...
  10. HVAC
    I have a CTK04AE Thermostat with a GMVC960804cn furnace with a 3ton communicating 16 seer Goodman outdoor unit installed about 3 months ago. The thermostat fails to recognize the equip with the error message "The Thermostat has lost communication with the network" If I click on system status it...
  11. HVAC
    Recently purchased the Amazon home thermostat. Followed all in app instructions and felt it was fairly easy since it is made by Honeywell. Even followed a couple YouTube videos and did exactly what they did (or so I think) does anyone have any idea what I can do to get the thermostate to power...
  12. HVAC
    I am attempting to replace an outdated thermostat without a C wire. I would like to run a new thermostat wire down to the furnace instead of attaching an ac adapter that plugs into the wall. The trouble I'm having is knowing where to attach the C wire at the furnace. My furnace is a Trane XV90...
  13. HVAC
    Looking for help on setting the differential on a new smart thermostat for my floor heat boiler. Supposedly the new thermostat has differential settings between .5 degree and 3 degrees. What I've found with my past thermostat is that the room temp overshoots a half degree to a degree which I...
  14. HVAC
    Hi Everyone, I want to replace the existing thermostat (uses 4 wire) with an Ecobee which requires an addition c-wire for 24 volts. Please the see the pictures attached. The board on the furnace has 5 terminals: C W R Y G. Which terminal is the one with 24 volts needed for the Ecobee? The label...
  15. HVAC
    I just moved into a house with a Coleman electric heat pump and an electronic air cleaner. It's fairly old, almost 20 years, but the house has sat mostly unoccupied for almost 15 years. Had an HVAC contractor check it out and he said it is in good operating condition... I have questions and...
  16. HVAC
    Hey all! I'm new to this message board, but read through a ton of posts which helped me troubleshoot so far. Trying to get confirmation on a couple of things before I call out an HVAC person again. A little background info. We just moved in here a few months ago and it was a complete...
  17. HVAC
    I am swapping out a Honeywell TH621OU2001 thermostat for a GoControl GC-TBZ48 smart thermostat at a new home we just purchased to make an airbnb. We use the same GoControl thermostats at all of our Airbnb's and I have installed dozens of them. We chose GoControl because we have a couple houses...
  18. HVAC
    I purchased a modular ranch home that has a hot water radiant heat system with a single boiler and two zones controlled by electric valves. It also has a ducted A/C unit mounted in the rafters for cooling. With this configuration, there are (3) separate thermostats.... (1) near the living...
  19. Appliances
    Hi everyone, I bought an old chest freezer that I want to adjust to use as a fridge. I am aware that freezer thermostats generally have a screw that can be adjusted to change the temperature range, and that many also have a "differential screw" (there may be other terms for it but I don't know...
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