Hi I have a newbie question that I have not found the answer to.  I am planning on using a water furnace synergy for a new home.  I want to use it for radiant heat and for forced air cooling.  I am told that this is not possible.  Their website I found to be of little help so I am hoping someone on here can shed some light on this problem for me.  One guy told me I would have to buy two units, and that just sounded like lunacy.  Can someone please shed some light on this for me?  thank you.

who ever told you no is out to lunch...check out this link

did they mean the if you use it for radiant heat you cannot use it for forced air heat as well? thanks for sending that, I had read that before and that is what was confusing me. thank you.

the unit will make hot water, and heat and cool air. But not all at the same time. Only one function at a time

Geodean is correct.
I have a Synergy 3D unit that does hydronic floor heat, forced air heat and cooling but only one mode can be running at once.

You can also accomplish your goals with a water to water geo and a hydronic air handler.
Either design is more complicated than a run of the mill geo. You'll want someone who has done similar systems.
j

http://welserver.com/WEL0396/
http://welserver.com/WEL0267/

2 systems live who do exactly what you want them to do.

Make sure you do not go with the guy who said this is not possible.

Thanks for all the good input. I live in the south Jersey area and I am having a hard time finding a good installer of Geo. The company is CMS thermal her in Jersey and I found them thru this site. If any of you know of anyone around me that is a good installer please pass his info along. Also, I was curious what minihowie said earlier, he has a system that does forced air heat, hydronic floor heat and cooling. why would you set it up using two different heating systems? thanks for all the help.

Have you tried the www.waterfurnace.com website and looked at the dealer locator to find somebody to install a Synergy 3D unit for you?

The water furnace synergy 3D will certainly heat air, and water for building heating.  In addition, it will also provide domestic hot water preheating while the unit is operating.  Nordic heat pumps from Maritime Geothermal offer a similar product called the TF series (www.nordicghp.com).  TF stands for triple function.  The heat pump will heat air primarily, once that zone is up to the appropriate temperature, the hydronic section of the heat pump will operate to heat a buffer tank to the desired temperature.

Best Regards,
Bret Hutchinson
Earth Fire Energy Inc.
www.earthfire-energy.ca

thanks for all the input. I have looked on the water furnace website and the first one I called told me the same thing about not doing both, he told be I would need two geo units to do cooling and hydronic. Also, I had read a bad review on here about him. The second one I found on here and had read good reviews about but was not sure if I was missing something or just not really understanding what he meant by it not doing both systems. So I was hoping someone who as actually used some of these guys would comment on who they may recommend.

Laury Services is who I used to install my Waterfurance where I live in South Jersey.  They eventaully got it installed right, after failing to connect electricity to the Heat pump when the originally installed it. They had to come back a month later to finish the job. They are from Vineland.

I have talked to Laury and he was one of the guys that said I would need separate units if I wanted to do hydronic and cooling. I think I read your post about them and that is why I was looking elsewhere. Thanks for the info.

I don't get it. The waterfurnace synergy 3 D is designed to exactly do what you want your system to do.

Posted By docjenser on 04 Oct 2011 10:48 PM
I don't get it. The waterfurnace synergy 3 D is designed to exactly do what you want your system to do.

+1 Your application fits the Synergy 3D unit exactly.

Maybe there is a little lost in translation here.

A Synergy unit will heat the air, it will cool the air, it will heat water on demand and it has a desuperheater.

However, it can only do heating of the air and the desuperheater nothing else.
It can heat the water for the radiant on demand and the desuperheater and nothing else.
It can cool the air and the desuperheater and nothing else.

It can not cool air and heat water for a radiant system at the same time. Typically a system would be setup with priority for heating the air since the water will store the energy longer.

Example:
Synergy unit gets call for radiant floor and starts heating water
5 minutes later there is a call for heating air, radiant water heating shuts down, air heating starts up and as soon as call for air heating is finished unit goes back to heating water. While all this is happening the desuperheater is working the full time. Does this make sense?

Posted By SkyHeating on 06 Oct 2011 04:49 PM

It can not cool air and heat water for a radiant system at the same time.

This part confused me as I can't see any reason you would want to cool the air and heat the radiant.  I assume you meant "It can not HEAT air and heat water for radiant system at the same time". Is that correct?  I assume so, as that fits your example too (which was a great example and helped clarify what you were saying, at least for me).

Posted By khonderd on 06 Oct 2011 05:26 PM

Posted By SkyHeating on 06 Oct 2011 04:49 PM

It can not cool air and heat water for a radiant system at the same time.

This part confused me as I can't see any reason you would want to cool the air and heat the radiant.  I assume you meant "It can not HEAT air and heat water for radiant system at the same time". Is that correct?  I assume so, as that fits your example too (which was a great example and helped clarify what you were saying, at least for me).

Yes that is correct, the unit can only operate in one mode or function at a time. So you are either heating water for the radiant or air but not both simultaneously.

Ok here is my next question. Why do I want to heat water for radiant and heat air? Wont most homes have either radiant for heat or forced air for heat? I am interested why you would install two heating systems seems like a tremendous expense. Thanks.

A lot of people will only do radiant for a first floor and have ducted heating and cooling for the second floor.
Otherwise it is radiant only for heating and ducted cooling for the areas needed.

Posted By ll1542 on 06 Oct 2011 08:08 PM
Ok here is my next question. Why do I want to heat water for radiant and heat air? Wont most homes have either radiant for heat or forced air for heat? I am interested why you would install two heating systems seems like a tremendous expense. Thanks.

Many application have old forced air houses with new additions, where they want radiant floors. Or you can use the hydronic coil to make your domestic hot water full time.