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If you go to the home owner website you can enter your zip code and pull up contractors in your area that install Arzel

http://www.arzel.com/locate.php

Yes...Zoning is usually the best option in that application.

Not sure if these are close but here are a few recommendations...Awesome Services and ATS Mechanical. If you get me your zip code I can get you a few more recommendations that might be closer to you.

Your really not comparing oranges to oranges...Emme is a much more complex system than Arzel. Emme uses a bladder type duct closure and Arzel uses a gasketed blade, both actuated by low press/vac. If...

A few options to look into;
Arzel "Balance-Pro" dampers, insert-able manual balancing damper that can be replaced with an air driven damper if zoning is installed at a later date.
Arzel...

If the two zones being heated by a common forced air system are isolated from each other, than the importance of having functional returns in each zone is critical.

If the temperature at the thermostat is correct than why do you want it to run longer?
The middle of the house has much less of a heat loss then the other two and is most likely being heated by...

Great application for zoning...if your registers will be in the ceiling be sure that you design for max velocity to push the warm air towards the floor.
Our system (available to contractors only)...

It is actually not an "Error Message" but simply a "message" indicating what is happening with the management of the equipment.
"Below Balance Point" can indicate one of two things;

1st- If...

I believe you are on the wrong thread...

Typically the room by room load diversity will remain regardless of where your system is located. You might move the problem to another room or another season by changing delivered air flow...

The Nest stat is not something to take lightly or thumb your noise at...it was well developed and being well marketed. You need to look at it as an opportunity to either help your customer get it...

You are joking right???

I sure am glad that I don't perceive that "most" hvac technicians are like "those guys" that make me crazy when they call in for tech support and don't have a clue about diagnosing a system problem. ...

Do realize that the thousands of systems that have been installed properly and therefore work very well are only seen by the contractors that installed them. Those home owners see their contractors...

We have been working towards "non bypass" designs for the past 10 years and agree with the CEC study pertaining to bypass ducts as an energy hit.

My opinion is that you should "never" have a...

It again comes down to proper application...if properly applied the results of magic beans is golden!

They really weren't magic...they just led to something that wasn't expected.

The magic of...

How do you change the cfm values from htg to clg?

I understand that equipment cfm is different for htg to clg but the cfm ratios to each register is the same unless you re-balance the system for...

If you use the wrong zoning control and the wrong bypass and the wrong installer than you will have issues, so don't do that!

In most applications redesigning duct work is not required. If the...

Magic it is not...a problem solver it most definitely can be!

Most things don't work when improperly installed!

"Won't need Zoning"...That's your opinion...Many people want more control than...

Ceiling registers are great for cooling if you can optimize the air flow to them when you need it. If you don't close the doors to those 2nd fl rooms the air will make its way to the return air...

I read this as two zoned systems with a total of 7 tons of capacity.

We have many very experienced Geo contractors using our zoning systems with much success.

If sized properly a bypass damper...

If you could possibly pull 100% of the return air from the 2nd fl, it might help, but it still won't be what you're looking for.

I live in an old farm house that has zero returns on the 2nd fl and...

I would also agree that 5 tons for even 2775 sq ft seems excessive. I do very much agree with your zoning request, we have been providing the controls/dampers to contractors for do that very thing...

I would interject that the Arzel zoning panel would most likely be re-usable with what ever solution you end up with. Zoning with chillers and hot water coils is a very good comfort solution...I...