Replies

1. 
   Tim | Jan 09, 2006 05:45pm | #1

   Absolutely, this makes sense. An air handler with a built-in txv coil (for cooling) and a hot water coil to provide warmed ventilation while the RFH warms the house, is a very good compliment to a hydronic heating system.

   Along with the hydronic AHU, an indirect water heater is another excellent compliment to a boiler based system. The condensing/moduclating boilers available today will provide comfortable winter heat and domestic hot water at efficiencies that no other (or very few) residential systems can match.

2. 
   CloudHidden | Jan 09, 2006 05:57pm | #2

   I've liked the design, and the company has been fine to talk to, but even though I've recommended it to perhaps a half-dozen design clients, each has eventually gone another route be/c of cost of the system. Wish there was one where the cost seemed to better match people's expectations.

3. 
   arrowpov | Jan 10, 2006 12:08am | #3

   Just finished installing ours last week. I added the heating coil to our unico system to back up the rfh. I am now waiting for sub zero temps to see if it does what I intended it to do.

1. 
   CloudHidden | Jan 10, 2006 12:16am | #4

   HydroAir is different from Unico. I have Unico...after the first year, disconnected the heat element and used the supply line to add flow to the RFH...we have so much volume that we never noticed the heat it provided. Should be better if ceilings not too high.

1. 
   arrowpov | Jan 10, 2006 01:19am | #5

   I have some high ceilings in a room with lots of glass so I installed the hydronic coil in the unico system. I am hoping that takes the chill out of that room, and with some air convection, the ice on some of the windows may not form during sub zero periods.

2. 
   JEK106 | Jan 10, 2006 03:12am | #6

   I had considered the unico as much.. are the costs similar? thanks for the other comments in here as well..

1. 
   arrowpov | Jan 10, 2006 05:22pm | #7

   I have not compared costs. I purchased ours direct from the distributor, if I recall correctly the material costs 4 years ago were betweem 4 & 6 k. That included air handler, outside unit and ducting to cocer 2,900 s.f. house. The ducting cost as much as the mechanical equipment.