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Thanks for the input guys. The static pressure is given by the Evolution thermostat so it may or may not coincide with the way the pro's measure it. I have a 3Ton system with a matched 4Ton coil,...

Thanks, I blocked it temporarily and noticed the static went down by about .02. What is the ratio needed from return main trunk to return grill size, is it 1:1. My return is 12x24 or 288 sq.in. If...

I have a brand new Bryant 289B with Evolution thermostat. We are just in a heat wave and my second floor of my house is staying a few degrees warmer than my first. Common problem I know. My static...

Thanks guys, I'll run it down to 10F. As a side note I also had installed a Toshiba/Carrier mini-split 9000Btu HP in a bonus room over my garage and it delivers 108F with outside temps of 10F. I am...

I had a new Bryant system installed this fall and I am wondering if there is a program or some way to calculate the optimum cut off point of the HP. Here are some details:

Furnace 355CAV042080...

Can anyone confirm the latest software revision number on the Evolution thermostat. The Bryant website links to HVAC Partners to which I do not have access.

My mini-split maintains set point without issues. Not sure what's going on with yours. Check the manual as some units allow you to input a temperature offset. I wonder if your installer may of...

No need to run AC, just run your fan on high.

Did you get the Infinity thermostat, if you did what is your static pressure.

With a little research on the net you will find the Carrier AHRI excel spreadsheet that will answer all you questions.

Let me just share my story with you. My house had a 125kBtu furnace and a 3.5T HP. After a lot of research on this site I paid for an independent manual-J. Results came back at 60KBtu and 2T HP.

This is what I would do.

I think there is something wrong with your ACH number. The link provided by freeagent shows that a house with ACH below 5 is considered tight. I had my energy audit done and the tech said she never...

Not too late and he will do it the way it was however he did not recommend it. Thanks for the reply's.

Installing gas furnace with blower, return comes in the side of the furnace and plenum on top.

I am having a gas furnace and heat pump installed. This is a northern climate house so the furnace is in the basement with a plenum and trunks. The old furnace had the HP coil above the furnace in...

One of the contractors quoting on my new furnace plus heat pump installation wants to increase my return duct, supply seems fine. The other contractor makes no mention of it. The system going in...

Thanks ACBD, that's good advice. Will do this tonight as I have all the numbers, I even have the balance point charts.

Which is more important. I am looking at two heat pumps:
1- HSPF 12.5 / COP 17F 2.46
2- HSPF 8.9 / COP 17F 2.7

I was very surprised that the lower HSPF HP actually had a better cold weather...

Thank you sir :cheers:

I'm having trouble figuring out what the Bryant 289B two stage minimum cooling and CFM are. If I'm reading it right the high stage is 35000Btu and the low 30200. That doesn't seem like a big...

Here is why I was asking, bare with me the post will be a little long however it makes for an interesting debate.

Heat-loss calculated to 56,300 Btu at -14.8F (Montreal)
Heat-gain calculated to...

Yes I did mean heat-loss, winter load.

I don't understand how you do this in Ontario, your avg house heat load must be 80KBtu. Surely you don't install heat pumps for 80kBtu??

Keep in mind I'm a homeowner not a pro but all my research points to HP= 125% of cooling load (heat gain)