Christopher Talarico
  • Portland, OR
  • United States
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Christopher Talarico's Discussions

Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
14 Replies

Hi,I've looked around online and haven't found a lot of good information on home heating with hydronic air handlers used in conjunction with tankless water heaters (TWH). I would be interested to…Continue

Started this discussion. Last reply by Graham Irwin Sep 4.

 

Christopher Talarico's Page

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Graham Irwin replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
Sep 4
Bob Blanchette replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
"When it costs the same price as 2 separate systems there is no juice regardless of how hard you squeeze. Only a nightmare for future service techs, there will never be a part on the truck to fix the system, maybe not even at the supply house. Parts…"
Sep 1
tedkidd replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
"Nice posts Steven and Eric.   Scale on my combi is a recurring problem.  Attaching boilers to ahu's seems to excite tinkerers, but nobody seems able to make a case there us any extra juice from all the extra squeezing.…"
Sep 1
Eric Kjelshus replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
"I find the tank less hot water lime up.   I have a condensate pump that I pump white vinegar or such(delimeing) into the one quart heat exchange.  its 1.5 hr once a yr just to keep the tankless from over heating.  I do put a magnet on…"
Sep 1
Steven Lewis replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
"It looks better on paper than in real life applications.  Both Amana and Lennox came out with dual heat applicationa that would heat the home and hot water.  Eff ratings on the heating side were about 92-97% and the water heaters were in…"
Aug 31
Dennis Heidner replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
"Rinnai has application note on how to use their tankless hot water heater with a Rinnai water to Air heat exchanger. Build America - via Building Science Corp, published report in…"
Aug 30
Diane Chojnowski left a comment for Christopher Talarico
"Welcome to Home Energy Pros! Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for you! Don't…"
Aug 28
Christopher Talarico replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
"Barbara, thanks for the info - this is some of the research I was interested in seeing. That report shows that a combined system is more efficient than an 80 AFUE furnace and very inefficient water heater. It does not seem to indicate that a…"
Aug 28
tedkidd replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
"What are you hoping to save?  Have you done any calculations?   How big is the house? Occupancy?  Just put in a high efficiency air source heat pump and an electric water heater and save yourself a meter charge.  Gas will not…"
Aug 28
Bob Blanchette replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
"Why not get 2 systems if it's the same price? Furnaces are mass produced keeping costs down, hydronic air handlers are still a "speciality item" in residential with low production numbers. You won't find a single hydronic air…"
Aug 28
Barbara Smith replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
"See "Why Pay for Two Condensing Systems When One Will Do?" by Schoenbauer et al at: http://www.aceee.org/files/proceedings/2014/data/index.htm"
Aug 27
Christopher Talarico replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
"Sounds good - thanks again, Bob.  I was leaning toward the furnace, mostly because it sounds like there would be a fair amount of additional maintenance with the hydronic setup.   "
Aug 27
Bob Blanchette replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
"For the same price I'd keep the appliances separate. Once you go to condensing units there is little difference in fuel consumption. Condensing HWT parts are special order items, condensing furnace parts are typically on the shelf at the local…"
Aug 26
Christopher Talarico replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
"Thanks for the reply, Bob. There will be no AC in the home, and the net cost for air handler and recirc pump is going to be very near the same cost (possibly slightly more) than the condensing furnace.  (This is after Oregon tax…"
Aug 25
Christopher Talarico's discussion was featured

Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace

Hi,I've looked around online and haven't found a lot of good information on home heating with hydronic air handlers used in conjunction with tankless water heaters (TWH). I would be interested to hear from anyone who has experience with these "combined" or "integrated" space- and domestic water heating systems.  I'd like to know a few things, especially as they compare to a condensing gas furnace:- How efficient are these systems?  I've read that they match the efficiency of the water heater,…See More
Aug 25
Bob Blanchette replied to Christopher Talarico's discussion Heating with Tankless Water Heater & Hydronic Air Handler vs. Gas Furnace
"I've done this with a conventional water heater. Works well except for design temp mornings where there wasn't quite enough hot water for space heating and a hot shower. EF on the WH goes up since there is more heat produced vs. standby…"
Aug 24

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At 2:01pm on August 28, 2014, Diane Chojnowski said…

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