From: Richard Kahn To: Jeff Epstein <jeevacation®gmail.com> Cc: Mark Tollison czi >, Rich Barnett <1 Subject: Fwd: 9 East 71st Street Date: Mon, 28 Oct 2013 17:57:07 +0000 attached is AD Winston comments on the link you sent us do you envision this unit to supplement existing 7 tons hitting masterbedroom or want it to be standalone i also have sandy berger (hanson contact) looking into this and hope to have 2 bids for your review Richard Kahn HBRK Associates Inc. Begin forwarded message: From: "M Palladino" Subject: RE: 9 East 71st Street Date: October 28, 2013 1:47:25 PM EDT To: "Richard Kahn" Cc: "Richard Barnett" Gentlemen, To start I have never installed or heard of thermo space, however I did look into the link which was sent to me and I have a number of concerns. The first is it utilizes refrigerant 22 which has been banned by the EPA and discontinued in new equipment since January of 2010, its also an on/off system not inverter driven, meaning once it reaches temperature the compressor shuts off and does not come back on until temperature goes above set point. If this system is to be installed, I would recommend an inverter driven system, which allows the compressor to ramp up and down depending on the load conditions, this works best because the system never shuts off avoiding the cold/hot spells during the off cycle, not to mention it is much more energy efficient. I would recommend installing a 3 ton Mitsubishi commercial grade inverter driven wall mounted ductless split system which utilizes new R410A refrigerant, with inverter driven technology. Ductless split systems operate differently then a conventional system, which is currently serving the entire house. They distribute colder air therefore dehumidifying more then a conventional system can.. However this works much better if the whole house was heated and cooled by a ductless split system. Humidity seeks its own level and will find its way through doors, floors and