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Air source to water heat pumps
rhl
Member Posts: 109
Has anyone installed any of these air source to water heat pumps for heating in westchester county? What brands are out there? Any recommendations, thoughts, or comments. It seems like a reasonable way to save some money
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Comments
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Not many choices in brands and sizes yet. Rumor has it a few more brands will be introduced at the AHR show in January.
Dakin Altherma was supposed to be an industry leader, they pulled their products back from US distribution.
I know of a Mestek/ Spacepak branded Solstice in upstate NY, above Utica. its has been through some sub zero conditions. On it's second winter, so far so good.
Find more info and an Application manual here.
http://mestek.com/hvac-metal-forming-articles.asp?id=963&type=1#.XANWIi2ZOIEBob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
sorry to bring up an old post, but, i'm curious if anyone went to this AHR show and what if anything might have shown up?0
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Wonder how that CO2 company is doing?0
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SpacePak Air-to-Water Heat Pumps: http://spacepak.com/hydronic-heating-and-cooling
WaterWorks/Solstice Application Manual: http://spacepak.com/water-works
Training Video: https://youtu.be/NK9gi0IvJvo
Introduced at AHR:
Meagan Harrington
Mestek / SpacePak
Marketing Manager
Westfield, MA
mharrington2@mestek.com0 -
In Westchester County, NY many residents pay 25¢ per kw, which may make air to water heat pumps problematic. Other upstate counties, where they pay maybe 15¢/kw, it's more viable. These costs include all supply, delivery, taxes, etc.0
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@D107 sorry for the slow reply. That's not clear to me:
What is the $/energy produced in each case? well, 1 therm is ~ 30 kWh worth of energy, and in westchester it's about $2.50 per therm. Assuming a boiler has a COP of 1 (i.e. it operates at 100% efficiency), that's 8.3 cents per kWh. Now, on the other hand, the COP of a heat pump in westchester (whever the average wintertime temperature is 45 degrees, min is 0, and at least 95% percent of the time it's above 10 degrees), is over 3.
So for each .25 dollar, we get over 3 kwhs, which is magically: 8.3 cents, which is about the same. The reason for this? The price of electricity is exactly 3 times the price of gas on a per joule basis, so whenever we can use electricity to make at least 3x the heat, we are outperforming our gas counterparts.0 -
Aermec has units installed in your neighborhood and over 1000 across North America. Been here for over 10 years now I don't think most last that long.0
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