And so at the END ~ It begins... My '95 YORK SEER 10 4-Ton "Outside Unit" (Compressor) feeding a Diamond 80 "Air Handler" in the Attic seized and popped the 50 amp breaker just as Summer ended... BUT ~ because the "Heat" component would continue to work ~ I figured I'd wait 'till Spring to do anything about it...most-likely I figured I'd REPLACE the entire System with something new 'n pretty ~ and of course "SEER 13 or better" : ) THEN I ate that Apple from the Tree-of-Knowledge ~ AND - like a bad Colonoscopy - the deeper I look into what I HAVE ~ the crappier IT appears! FIRST I'm told that "SEER 13 Efficiency Mandate" was soon going-up to SEER 15 ~ "...so FIXING what You have - a nearly 20 yr. old R-22 refrigerated SEER 10 - is absolutely stupid..." THEN I learn that buying anything LESS than SEER 16 TODAY is foolish "...because despite that It's at least 35% more efficient that what you HAD ~ IT'S gonna become obsolete here-qwick! And THEN I learned of the significantly HUGE SAVINGS reportedly found for having converted Ones Attic from "VENTED" to "NON-VENTED" with SPRAY-FOAM Insulation... DESPITE that My originally installed "Ducting" absolutely SUCKS ~ for having been improperly installed INTO the Air Handler to begin-with (into the BACK of the Unit is clearly depicted as "WRONG" within the installation-guide) ~ It's "Plenums" rather a deus-ex amalgam of "Duct-Board" literally taped-together AND leaking like a Seive AND totally WRONG for being 3 1/2 Tons worth of "IN" trying to feed 4 1/2 Tons "Out" through a 1" Paper Filter : ? And according to some "Installers" THAT'S OK...never-mind too: That I don't currently own a "CLOSED COMBUSTION" HVAC System that -- at least according to the SPRAY-FOAM Guys -- "...isn't REALLY needed..that's just what the HVAC Guys SAY to sell YOU a MORE EXPENSIVE NEW UNIT ~ when all We really have to do is just bring-in a "Vent" to supply Air to the Unit...and We've never had a problem whatsoever!" Ewkay ~ in any case this "retro-fix" is not gonna be cheap ~ and I guess My "Boat Project" goin' on two-decades now isn't gonna make it into the lake THIS year either... : ? If I'm actually gonna save that-much dough across-the-board -- AND I'm lookin' to DIE HERE (...and be buried somewhere in-the-yard ~ really!) then WTF ~ why-not buy the BEST of the BEST of the BEST : ? Cut-to-the-chase: I'm liking what I can learn of TRANE for "Durability", but then too ~ despite It's PRICE ~ it's not being found the most "Efficient" by a long-shot..."Pay-Back" being what-it-is 'n all-that ; ) The ones that are "Most Efficient" (Amana/Broan/Frigidaire/Maytag/Nutone, etc.) don't have a reputation for durability they DO have that "Lifetime Warranty" promising "Complete Unit Replacement" should anything serious fail ~ which could be well-outside the 10 ~ 13 yr. warranty others profess! Were I starting from scratch I'd HAVE a "NON-VENTED ATTIC", and otherwise go Geo/Solar to get OFF-THE-GRID...I'm really thinkin' 4 or 5 Lighting Rods place just-right 'n so would REALLY "Fix the problem at-hand"...but then what-if My Guitars were lost! Back-to-reality: I'm told a switch from LPG would be SMART ~ Natural Gas - being 25% the cost of what I get LPG - IS available at the Street, and COULD be brought-in, but It would be pretty-expensive for how-far My home is located from Public Right-of-way... Because I OWN My 1,000 gal Underground Tank I buy LPG once-a-year whenever it's cheapest AND at a great "Volume Discount"...I paid $1.95/gal last-year...which roughly equals a "Therm"...which IS .49 cents I'm told today... However I believe a "Heat-Pump" would seriously mitigate how much I use for there *usually* only being a dozen or so days below 32 degrees F. where I'm at here in ZONE 3... Then theres Years like THIS YEAR... : ? Still ~ I'm thinking the most prudent replacement would be a "Hybrid" LPG/NG Heat-Pump for It's gains in effieicentcy over that of a Conventional HVAC Air Handler... We happen to live in a very well-appreciating "Location" ~ that IS "Growing" ~ so If I'm staying then the place deserves the best I can get TODAY ~ vs. another of "Builder Grade" the likes of-which was originally installed nearly two decades ago... It just really seems that the more I learn ~ the harder it gets to just figuring-out what's best to-do...and THAT has really become a problem! So many ways-to-go...if You've "Been-There ~ Done-That" PLEASE...what say You : ? Thnx M.J.

i installed an electric forced air furnace and new thermostat at cottage.Everything works great but would like to run in the fan only mode but can't get it to work. The thermostat is wired correctly the only thing i can think of with the thermostat is i did not take out the jumper between r and rc do not have air any way don't think this would be the problem.I investigated and found that my fan is controlled by a plenum temperature sensor. Can i follow these wires to the fan and hook the ( g) fan wire of thermostat to this for fan only function with out causing a problem. Sure could use some good advice on this one .Thanks for any help