Best Practices for spreading temps around the house

[James Sentman]

We have similar issues here wen the temperature is extreme outside, either cold or hot and I also have XTension turn on the fan in  certain situations. Like when we are sleeping and have the door closed and it gets considerably hotter in the bedroom than the rest of the house.

What I see here with the fireplace is that we draw cold air in from remote rooms in the house around the windows and such, or through the attic. So the rooms that get cold are far away from the fireplace area and definitely benefit from turning the furnace fan on to keep the warm air flowing into those areas. I can’t say for sure you’ll experience the same though ;) I would make up a roaring fire tonight and after an hour or so just walk around and see if there are particular cold spots in rooms that you’d like to even out, or if it really doesn’t make that much difference. 

The problem is made more frustrating by the fact that when the furnace here is just on fan it runs at a lower speed than it does when heating or cooling and so doesn’t move as much air. I think there is a jumper or a setting inside the furnace for that and I am considering making that go a little harder for the puepose of better circulating things.

All this reminds me that I’m past due changing my furnace filters. I’m heading off to do that while I’m thinking about it...



> On Dec 23, 2022, at 10:59 AM, Jerry Prsha <jerry at stlmacguy.com> wrote:
> 
> I’m curious as to how you deal with extreme temperatures with your HVAC systems. We hit -6(F) overnight with a dew point of -15(F). I (think) that how I’m handling this makes sense however, I’m always open to other opinions.
> 
> We generally keep the house at about 73(F) year-round. And at night, have temp drop to 71(F).
> 
> I have XTension turn on the HVAC blower to constantly ON if the outside temperature reaches 93(F) or, below 20(F) in an attempt to better spread the air more evenly. The Thermostat is in the hallway, away from all of the windows and doors typically, are shut to all of the bedrooms at night.
> 
> We will sometimes build a fire in the Great Room and, I know that a fire creates a negative pressure in the house from the air rushing up the flue. And that air usually will end up coming in from outside, I would have to think that the warmth generated by the radiation from the fire would have to heat the surrounding space. And then having the furnace fan always on, would help spread that heat to the surrounding rooms? Or does having a fire just negate itself because of all the cold air coming in for cracks in the doors and windows that I’m not aware of?
> 
> If you have time, I’d love to hear your theories about all of this.

Thanks,
 James


James Sentman                       http://www.PlanetaryGear.org		http://MacHomeAutomation.com




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