All Questions
20 questions
5
votes
2
answers
567
views
Second floor thermostat, battery powered, does absolutely nothing and appears to not be connected to anything
I recently bought a two-level house that has a thermostat on each floor. The second-floor thermostat was not turning on; I removed it from the wall and removed some corroded batteries, cleaned it and ...
- 111
1
vote
3
answers
386
views
How can I update an old electric furnace in my mobile home? [closed]
I rent a small one-bedroom trailer with an old electric furnace from the 70s. My electric bills in the winter are insane, especially relative to the size of the space.
My suspicion is that the main ...
- 11
1
vote
1
answer
463
views
Entire (Mostly) Home's Lights Flicker when Resistive Loads are Energized
Thanks for taking a look at my question. I am troubled by a strange issue that I think I may have an idea about, but I am not 100%. So I would appreciate anyone else's feedback to hopefully set me ...
- 111
0
votes
3
answers
1k
views
Estimating heat pump energy usage
My house is heated by an old oil furnace, and the oil tank could spring a leak and flood our basement at any moment, so I'm hoping to replace it with a ground source heat pump this year. I'm trying to ...
- 101
4
votes
2
answers
622
views
Required Circuits for Waterfurnace Geothermal Unit and Aux Heater
I am pulling the permit and installing the electrical wiring for my Waterfurnace 7 Series 4-ton Ground Source Heat Pump / Furnace. These are the components:
7 SERIES 700A11 Model 048 (Reference ...
- 153
2
votes
2
answers
2k
views
Heat pump not blowing warm air when on heat - puzzling behavior
Config:
Ecobee thermostat
Lennox setup (furnace, heat pump, indoor coils)
Installed for ~6-7 months now
Problem:
Setting the Ecobee to Heat for 66F (not aux - just using the heat pump) turns on the ...
- 205
2
votes
0
answers
3k
views
Older Coleman Electric Furnace Not Used
My wife's family has this older Coleman electric furnace in their mobile home that is not being used, instead they use electric space heaters. We're not sure how long the furnace has been unused or ...
- 95
0
votes
0
answers
214
views
Choosing Where to Place Forced Air Wall Heaters
I have a small home ~800 sq ft in a mountain climate that gets quite cold in the winters (10s-20s F in the day in the winter). I already have a pellet stove but the other existing heat comes from two ...
- 199
0
votes
0
answers
45
views
Thermostat swap
While switching out thermostat I noticed only two wires instead of more Rh W to be specific. The new thermostat has no Rh only R and Rc on Wich I selected R. Heat turns on now but doesn't turn off at ...
- 1
0
votes
0
answers
59
views
nordyne hvac furnace will not fire up, tries 2-3 times, the grey resistors get real hot
nordyne furnace kept giving me communication code, replaced thermostat, ran fine for a week. get pressure switch codes so i replaced them. now it starts cycle and wont fire, if i leave the unit off ...
0
votes
2
answers
1k
views
Does open stairs between basement and main living cost extra electricity bill?
Does with No door or open stairs between basement and main living lead extra electricity bill, specially in winter, even though entire basement is finished and well insulated ?
We want to have open ...
- 796
1
vote
3
answers
268
views
Does this seem like the right place to tap a C-Wire from my heater?
I need a C-wire for my thermostat but my heater only has R and W connectors (red circle).
On the schematic on the heater, up top (red arrow), looks like:
5 is 24V Gnd (bit hard to read but i've ...
- 11
2
votes
2
answers
440
views
Help adding relay for thermostats
My nest thermostats are missing a common wire which means they’re not getting enough power to work properly. I actually didn’t realize this until an electrician told me about it (it hadn’t become a ...
- 275
6
votes
3
answers
3k
views
Why don't HVAC service people want to use outdoor temperature sensors to increase efficiency?
Here in central Virginia, most houses use heat pumps with electric auxiliary heat. I have inquired with several different contractors about installing outdoor thermostats on my units to 1) disable ...
- 69
0
votes
0
answers
54
views
HoneyWell baseboard thermostat
Hello everyone! Need some help here (trying to help a family member) They recently purchased a home that has a furnace and AC ( with central air) in each room there at these honeywell thermostats. ...
- 1
2
votes
2
answers
9k
views
Turn on gas wall heater w/o electric thermostat
We are having a power outage in much of Los Angeles right now, big storm (02/17/17 3:55PM). I have a gas wall heater, pilot is lit, but no power to the wall thermostat. Can I turn on the unit manually ...
- 569
0
votes
2
answers
694
views
Furnace Blower Motor Replacement
I have an old carrier Weathermaker DX 58DXA060-100GG, and the blower motor has no oilers. I assume it was a replacement for the original. My question is, because I woke up to it humming and then it ...
- 2,372
3
votes
1
answer
11k
views
Goodman gas furnace limit switch opening, blower only runs with a/c [closed]
I apologize in advance for some of my incorrect terminologies. My father has a 2004 Goodman GMH80904BN gas furnace with a/c. The a/c has functioned properly all summer here in Ohio, we have recently ...
- 39
8
votes
4
answers
76k
views
Why is my power flickering across multiple circuits?
I woke up this morning and went downstairs to find that none of the lights would come on (lights were working fine upstairs). My first instinct was thinking that a breaker had tripped, so I went to ...
- 341
5
votes
1
answer
10k
views
Convert line voltage heating system to use low voltage thermostats
I currently have two line voltage ceiling radiant heating systems in my condo each with their own DPST thermostat. I'd like to use low voltage thermostats such as the nest. I found this transformer/...
- 153