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I have a Bryant 2-1/2 ton Puron a/c. Only two years old. Manual J was done using 100 deg F as the outdoor temp and 74 deg F as the desired indoor temp. Along with the house data, it came out to...

Could someone give me a brief overview of how the ducting might set up for zoning in a home? In the case of a single furnace in a bungalow, I am thinking of having the basement and each half of the...

No, the filter box is wide open into the blower compartment. Minor interference by the lip of the stand and base of the furnace body between the cut outs.

Well, here it goes...

Furnace: Bryant Plus 80V model 315AAV060110AAJA
Evap: Carrier CD5AXW036021ABAA (3-TON WIDE BODY or should be)
Filter: Aprilaire 2400; 16"h x 25-1/4"d
Thermostat: Bryant...

jeffs: jrbenny poses a good question, too. Just to be sure, on the auto setting if you are mid-way on the scale, there will be a box within a box. You can work up and down from there as necessary....

jeffs: What kind of outdoor temps are you experiencing at this time? Also, is the outdoor temp sensor actually outside and able to pick up outdoor temps without influence of direct sunlight or a...

Seadragon: Do you have a number or weblink for Carrier Canada? My unit is a Bryant but really, I don't think it matters...I just want to find a good contractor to look into this and think I might...

I'm venting...can you tell?

Well, I called an HVAC company, yesterday. They service and install Lennox and Carrier. I asked to speak to the service manager so I could communicate my high static...

If you never actually get to your set back temp and sit there for a length of time, there is no savings. You let all of that heat go out and then you ask the furnace to put it all back. You realize...

VM...if your furnace has a variable speed blower, then you can't adjust the blower speed. It adjusts itself to provide a set CFM of air based on what stage and efficiency setting is selected. I'd...

Doc: So those two readings are actually the pressure drop of the filter? Hmmm, my misinterpretation no doubt. He did take another pressure reading but it was beyond the supply plenum in one of the...

Well, finally I got someone to measure some static on my system.

First off...I must say that my Aprilaire 2400 filter that's been in use for 17 months was due for a change. My tech pointed out...

Is there any data anywhere (fan curve) that shows the rpm for a given cfm at various static levels for this blower?

I have a 20 x 25 cabinet.

The noise is most apparrent at the supplies. Returns are quiet. The closer to the furnace, the louder the supplies. The furnace itself is quite noisy, too. Kind of to...

This is some interesting discussion.

First off, are your sure about the CFM rating for the 80k 94% on high? I see 1400 cfm at 0.5" wc but have a hard time believing that they would actually run...

wyounger: Good stuff. I appreciate your comments. I looked up our January temps and the minimum normal is -19 deg C (0 deg F) and the max normal is -8 dec C. Many times things around here aren't...

Thanks for the discussion. To clarify..."the great white north" is indeed Canada, not Pennsylvania.

Also, at the time of selecting the 80% unit, the price of natural gas was not an issue at $2...

If you use a remote temp sensor, there is no average reading taken from the thermostat and remote sensor. The remote sensor will override the room temp sensor in the thermostat. Also, you can only...

Guys...my furnace is properly sized and new (2004). It's 110K input, times 80% for efficiency, minus 10% for altitude = 79,200 btu/hr. And it is a two stage so it infrequently runs on high fire. ...

Looking for some thoughts and opinions on having a 1700 square foot bungalow zoned with the intent of using less gas to heat it.

Thinking of two zones on the main level, one zone for the basement...

A quick opinion from some Infinity/Evolution familiar person.

I need to hook up an indoor remote air temp sensor to my Evolution control. I have the OATS that was supplied with the control. On...

robroy: How's it going, eh? I ran my Infinity on deg C for a while and found the temp swings in the house were too much. Depending on what I had it set at, either it got just a wee bit too cool...

Chris: See if the installer will come out and shut off the Smart Recovery system on you Infinity thermostat. Instead of you having to remember to always be setting times up to 1-1/2 hours different...

Northof49: Or should I say "Hey, Vern. It's your good buddy Ernest, here". And I'm quite a ways from 55... If you have the cycles per hour too high, the thermostat will narrow the differential...

Bolsen: Is it possible that you told the installer/supplier that you would be putting in new, triple glazed windows, attic insulation, etc? If you did, then perhaps he did the load calcs based on...

Get a load of this. The infinity shows the room temperature to be 72. My wife's cool so she bumps the temp up to 73. The back light brightens up and when it shuts off 10 seconds later, the room...

I had my furnace replaced, air filter, new chimney, central air conditioning, humidifier and ultraviolet light system installed last summer. It was not a complex job, the sheet metal was...

Well...looks like they bought a new thermostat for nothing. The tech came back and after some more serious probing, discovered that the pvc drain for the humidifier was plugged. This caused all of...

Hmmm...so much for things being ducky. The folks just called. The furnace is up to its old tricks. Apparently, the stat is set for 22 and the room temp is now 18. I guess the tech will have to...

Well, it was the stat. My bro in law sent one of his techs over and he determined it was the stat as I mentioned in the first message. So, they bought a VisionPro 8000 on advice of the tech and...

Got a call from the in laws. Their furnace has been acting weird so they called someone in. The guy checked things, tightened a loose wire (apparently the continous fan had quit running a couple of...

I wonder if a chimney sweep could stuff a brush in there and push the crap out the end of the vent pipe? I wonder if they even have equipment long enough. Not sure how the set up is to pull the...

Dash: No. But then again my high static data is all from the Evo control. We never have plugged a manometer into the ducting. The timing has a lot to do with my tech being a personal friend and...

Fat Eddy: My tech is with you. Once he does the "real" static check, he might be able to back his thoughts up with data. He can't wait to rub it in. He really can't believe the Evo is telling the...

Something for Bryant/Carrier guys to ponder and comment on.

My Bryant 80% variable, 110k btu with Evolution control does the blower check daily at 1 p.m. Here's what I observed the other day:
...

I had an issue with my make up air and combustion air inlets to my home. The issue is with -40 deg air coming in the house when there is no call for heat. Negative pressure in the furnace room is...

Jim: I wouldn't take any comments here too personally. I doubt anyone is being rude or ignorant with you. More like just quick and to the point. So many of these questions have been answered a...

Dash...I posted this way back in July c/w pictures. The work done was good but no one did any manual checks for duct sizing, etc. Only a manual was done for furnace sizing.

My tech is a friend...

Seadragon...you have very acceptable static. My system is a bit 'noisy' (air movement noisy) but I'll see about having corrected in the near future. I'll bet if they replace the main supply and...