tag:blogger.com,1999:blog-5235419263414453422.post3160089729812538767..comments2024-02-23T01:30:06.101-08:00Comments on Early Warning: Bleg on Minisplit Ductless Airsource Heat PumpsStuart Stanifordhttp://www.blogger.com/profile/07182839827506265860noreply@blogger.comBlogger9125tag:blogger.com,1999:blog-5235419263414453422.post-85210010255935270932012-07-28T07:52:49.305-07:002012-07-28T07:52:49.305-07:00Marc Rosenbaum PE has a lot of experience with the...Marc Rosenbaum PE has a lot of experience with these http://thrivingonlowcarbon.typepad.com/thriving-on-low-carbon/<br /><br />Also Coldham and Hartman: www.coldhamandhartman.com<br /><br />This conferece is a great resource: http://www.nesea.org/buildingenergy/<br /><br />Fred Unger, unger@hrtwd.comAnonymoushttps://www.blogger.com/profile/00759080790852080587noreply@blogger.comtag:blogger.com,1999:blog-5235419263414453422.post-58322503683770740002012-07-24T14:29:11.517-07:002012-07-24T14:29:11.517-07:00In the land of heat pumps, Sweden, these heat pump...In the land of heat pumps, Sweden, these heat pumps are frequently used, with good results. In the mid winter they need a rest, as the can not be used below -5C to -20C, depending on model. The Swedish Energy Agency has a qualified test of a few REALLY made for heating, not just adapted chillers (also called "designed for nordic climate"). You find it here: http://energimyndigheten.se/sv/Hushall/Testerresultat/Testresultat/Luftluftvarmepumpar-2012-2009/?tab=1 The test is in swedish, use Google translate, it usually works OK :-)<br /><br />I used to work with design of ground source heat pumps at www.eviheat.se (8 years), and in my opinion the air-to-air heat pumps are just noisy, anoying big hair dryers, giving a terrible climate in the house (warm at the unit, cold elsewere). In Sweden many houses have central water based heating, giving excellent heat spreading, but if your not used to that these heat pumps will give you good payback. I personally have a ground source solar aided heat pump with my superb under floor heating system, I'd never change ;-)<br /><br />@TommyWalfridsonAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-5235419263414453422.post-85626694716764991132012-07-24T14:25:01.948-07:002012-07-24T14:25:01.948-07:00In the land of heat pumps, Sweden, these heat pump...In the land of heat pumps, Sweden, these heat pumps are frequently used, with good results. In the mid winter they need a rest, as the can not be used below -5C to -20C, depending on model. The Swedish Energy Agency has a qualified test of a few REALLY made for heating, not just adapted chillers (also called "designed for nordic climate"). You find it here: http://energimyndigheten.se/sv/Hushall/Testerresultat/Testresultat/Luftluftvarmepumpar-2012-2009/?tab=1 The test is in swedish, use Google translate, it usually works OK :-)<br /><br />I used to work with design of ground source heat pumps at www.eviheat.se (8 years), and in my opinion the air-to-air heat pumps are just noisy, anoying big hair dryers, giving a terrible climate in the house (warm at the unit, cold elsewere). In Sweden many houses have central water based heating, giving excellent heat spreading, but if your not used to that these heat pumps will give you good payback. I personally have a ground source solar aided heat pump with my superb under floor heating system, I'd never change ;-)<br /><br />@TommyWalfridsonAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-5235419263414453422.post-74058471066624211942012-07-24T13:08:44.476-07:002012-07-24T13:08:44.476-07:00Ditto on HereInHalifax.
He seems to like the Fuji...Ditto on HereInHalifax.<br /><br />He seems to like the Fujitsu mentioned above, but I'd contact him.<br /><br />I'd be curious to hear your evaluations.Nick Ghttps://www.blogger.com/profile/12721405349726668110noreply@blogger.comtag:blogger.com,1999:blog-5235419263414453422.post-57628383026982039972012-07-22T21:19:33.422-07:002012-07-22T21:19:33.422-07:00On the Oildrum the poster HereInHalifax seems to b...On the Oildrum the poster HereInHalifax seems to be very knowledgeable about the mini-splits. You might shoot him an email.<br /><br />I installed a minisplit a couple of years ago and it works great, although I haven't kept records on its efficiency. And the Pacific Northwest is a much more benign climate than Northeastern US.Eric Thurstonhttps://www.blogger.com/profile/04184579803784550274noreply@blogger.comtag:blogger.com,1999:blog-5235419263414453422.post-86275047663135189952012-07-21T15:07:15.998-07:002012-07-21T15:07:15.998-07:00Hi Stuart,
You may want to check into bivalent sy...Hi Stuart,<br /><br />You may want to check into bivalent systems too.Donhttps://www.blogger.com/profile/04998336790408278060noreply@blogger.comtag:blogger.com,1999:blog-5235419263414453422.post-73284606407746502772012-07-20T05:13:16.098-07:002012-07-20T05:13:16.098-07:00Using a reverse cycle chiller would seem to be the...Using a reverse cycle chiller would seem to be the way to go. <br />Allows you to size for heating load, while still maintaining efficient cooling. <br />As a bonus you eliminate the chilled air from the defrost cycle.<br />http://www.ruralite.org/magazine/articles/hot-water-can-heat-your-house/Anonymoushttps://www.blogger.com/profile/02411093355519749716noreply@blogger.comtag:blogger.com,1999:blog-5235419263414453422.post-68993757565283038592012-07-19T18:16:31.267-07:002012-07-19T18:16:31.267-07:00Stuart,
I see them occasionally here in my mix-hu...Stuart,<br /><br />I see them occasionally here in my mix-humid climate of central Virginia. Your best source of information is going to be a local mechanical engineer who has specified them for buildings in your area. Best - JbJbhttps://www.blogger.com/profile/08162578347163466217noreply@blogger.comtag:blogger.com,1999:blog-5235419263414453422.post-39718317218362577812012-07-19T08:24:19.734-07:002012-07-19T08:24:19.734-07:00Stuart,
I looked into them a few years ago and fo...Stuart,<br /><br />I looked into them a few years ago and found that they work well as heaters on most days in my climate zone ("D" - Colorado Rockies)... there are a couple of good evaluations for one of the brands at http://reviews.younits.com/product-reviews/Ductless-Mini-Split-Systems/Single-Zone-1-Room/Wall-Mounted-Heat-Pump/Fujitsu/p/1320-12RLS-Wall-Ductless-Air-Conditioner-Heat-Pump-25-SEER-12000-BTU-1-Ton.html .... scroll down a bit for one particularly detailed eval.Mr. Sunshinehttps://www.blogger.com/profile/16137274372934160799noreply@blogger.com