Fehrenheit endurance

Can you seal off the registers in the basement? They sell magnetic covers that work wonders. And you may need to close all the registers a little? With that many registers, by closing all of them some, you will build some pressure for the others that are harder to get air to?

Also, is any of your duct insulated? That would help tremendously. 100% off my duct is insulated. The main trunk is Certainteed UltraDuct Gold (1" thick) thats R value -4.3 and then the runs that go from the Main to the registers is R-4.2 Flex vent. Even if you could just buy some insulation and wrap the exposed ducts? The warmer you can keep the air, the higher your register temps will be? 343amc wrapped a fair amount of his duct, if I recall correctly.

To run it on level 5 constantly to maintain 70° is not right? Unless your home is insulated like swiss cheese? I have mine on level 3 right now and it just went from idle/low fire to level 3 (stat calling for heat). Gonna be about 0° here tonight and mine will still kick down. . Didn't have a fire yesterday, so the basement is a little cool. But the upstairs is 72°.

What's the total Sq footage of your home? Basement and all subsequent levels? You said it before, but was that with the basement figured in? My house is about 2,180 upstairs. But about 3,000 with the basement factored in.

The new furnace will burn a little better with the updates, but I still think your dampers are not working correctly. Also, that small trunk off the main 10" trunk I don't like at all. I personally would want 100% of the 10" feeding into a main plenum all at once.

Have you sent some install pics to Mark Graham or Matt Fitts of Fahrenheit? I would like to hear what they have to say about that little junction just above the stove??

Here are the magnetic covers (stops and seal vent almost 100%. Just closing the little flapper still let's air by. When only dealing with an 800 CFM blower? You need every bit of air you can get. Also, pic of insulated duct(main trunk and then the black flex vent sealed with foil tape).

 

By removing the extra 90° and that extra horizontal section you will get 9' of EVL back. That itself will help the burn quality. Congrats!

 

I see a register in that last pic. Things like that need sealed off completely. Get a good magnet or use foil tape. Also, around the edges of that register should be sealed with tape.

Your only dealing with an 800 CFM blower. You need to keep the pressure up in your system as much as possible. That leak at that register is costing you valuable pressure and heat. Add in about 5 or 6 other small leaks and now the overall pressure has dropped and your flow to the father rooms is reduced.

Sealing and insulating the duct is key here. One being just as important as the next. The hotter you can keep the air and the farther you can push it. The easier it will be to heat your area.

My Dining room and Living room have no registers in them (none in use anyways). Because the warm air from my bathroom and bedroom, my son's bedroom, my daughter's bedroom, and their bathroom, all have to travel through the dining room and living room (air must return to basement) to get back to the Kitchen/Family room area, before it goes back downstairs through the basement door. By heating the father rooms, that will naturally heat any room that the air must go through to make it back downstairs.

This is why primary furnace's have cold air returns. It keeps the system a closed loop. Only heating the upstairs. You can open a register in the basement if you choose to have heat down there? But otherwise it heats only the upper levels. Something in which you may have to do (hook up a cold air return to the Fahrenheit)

 

You don't have to have it going to the 2nd floor. The air from up there will come down the steps

Just by connecting into your 1st floor will keep the basement 100% out of the loop.

It won't hurt to hook one up to the 2nd level. But just want you to know it's unneeded. The 1st floor will remove the needed air and air will naturally come down from the wind story.

 

Nice boat in you avatar. Champion?

Sorry for the side track!