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  1. Geothermal in Dayton, OH
  2. replacing ducts in old house - best under house or in attic
  3. Poor dehumidification & high superheat
  4. compressor and outside fan do not always come on
  5. Compressor noise question
  6. Air filters
  7. Black Foam Insulation on Lines Between Furnace and Condenser
  8. Radiant Barrier Paint vs More Insulation
  9. condensor cover debris cap
  10. Elevate Condensing Unit?
  11. Install Pics, Critique, Questions
  12. Soot from damper vent
  13. Oil Burner tech in Putnam/Westchester NY
  14. condensation
  15. Infinity Control - LCD light is 'shorting off'
  16. micron gages
  17. CONDENSER UNIT
  18. How to check if 2nd stage is working on XL16i
  19. CUSTOM REFRIGERATION NEED HELP
  20. Blower Wheel Needed
  21. Is this normal? Lower setpoint during the day to feel the same as at night?
  22. A/C Outdoor Unit Surface
  23. 20 deg. superheat, why? continue
  24. Trane XV90 Blower Motor
  25. Carrier Infinity installed - PICS - take II
  26. Wireless Thermostat for Heat Pump w Elec Heat
  27. Heil furnace with a Fasco blower motor.
  28. system choice
  29. compressor/coil mismatch
  30. Builder uses Rheem
  31. Help me decide on HVAC contractor
  32. GE Variable Speed Motor Problem inTrane Air Handler
  33. Bryant 10 SEER That Keeps Me Up At Night
  34. Questions regarding new Lennox system
  35. slant-fin kicker.
  36. low airflow
  37. HEat and Air efficiency
  38. Energy Electrical Control System
  39. Correct Orfice for high heat loaded evaporator coil
  40. Oil burner tech needed Westchest/Putnam
  41. evolution systems
  42. do i need a expansion valve
  43. How many tons is my unit?
  44. HomeOwner needs an answer (Not DIY)
  45. AC confusion
  46. New Heat Pump? A Few Questions
  47. Carrier Heat Pump Problems and Questions
  48. thermostatic contol valve?
  49. Need help with final decision
  50. Dry Air Rated Temperature
  51. Need some info on 4 pipes and heat pump units
  52. Tonnabe on Trane Heat Pump Condensing Unit
  53. Water heater on my basement concrete floor
  54. Need help locating a wiring diagram
  55. thread closed ?
  56. lineset sizing over 50ft
  57. Will this system work as expected
  58. outside air exchange needed with hydronic?
  59. Geothermal, load cals and Envision
  60. Rheem furnace...how many CFM
  61. Are New Refrigerant Lines Needed With New HP?
  62. Fedders Condenser and Air Handler
  63. Thermostat Setback, what is most efficient setting?
  64. Does dog piss kill coils?
  65. Final decision - advise
  66. Heater selection question for garage?
  67. init
  68. Comparing retrofit systems
  69. to change or not?
  70. Home Warranty Nightmare!!!!
  71. Humidity???
  72. V/S vs. Multispeed Blower
  73. Capped return air vent
  74. Duct restrictions
  75. HELP - I need a new heating system
  76. Trane Perfect Fit Whilstling
  77. Need Economical Electric HVAC Unit
  78. American Standard vs Carrier
  79. breaker tripping
  80. 5 ton Payne a/c unit makes noise
  81. replacing AC outside unit - HELP!
  82. NEW HEAT PUMP SYSTEM
  83. Any non-fibreglass duct insulation with high R-value
  84. Hey guys, got an air handler question.....
  85. refrigerant lines - inside coil
  86. i need wiring diagraham,for NORDYNE
  87. thermostat wiring
  88. ECM module
  89. Variable Speed seems to have Only two speeds
  90. HRV Manual Air Balancing Damper
  91. York CL24-6A condenser charging chart
  92. Carrier Infinity / Bryant Evolution w/ Goodman VS furnance
  93. Options for replacing gravity flow system
  94. pvc pipe on side of house draining-normal?
  95. primary and secondary drains?
  96. New system installed was informed he upgraded to 5 ton
  97. Bad Air Filter
  98. down flow VS up flow systems
  99. Load calcs are done. What size unit do I need???
  100. SOFTWARE
  101. My a/c pipes are rattling
  102. Heat Strips
  103. Lennox O23V oil furnace vs. Thermo Pride OH5-85
  104. Curious: What is MyInfinity Control Online?
  105. ultimate thermostat for 10M home
  106. need help current system
  107. Amana A/C compressor coils
  108. 80%, 90% efficiency
  109. Duct change out
  110. luxaire acclimate R410a system
  111. New duct work flooded with rain water & wet insulation
  112. install a new condenser
  113. Rules on recharging with Freon
  114. slow stage on all the time
  115. carrier warranty
  116. Need an opinion on an old home.
  117. Base for Outdoor AC Unit
  118. Carrier Infinity Zoning
  119. help for HVAC in basement
  120. Temperature deferential 14 degrees ok?
  121. Help with home A/C Unit - HEIL
  122. should i raise my ac
  123. American Made
  124. New Evolution install is completed!
  125. need help venting kitchen hood VS36 1200cfm
  126. Trane vs. Rheem
  127. Need help sealing duct box
  128. Need New Furnace
  129. Need advice...scam or not?
  130. trane heat pump
  131. Load Rule of Thumb
  132. Noob to boilers question
  133. cost differential
  134. COPELAND ZP41K3E-PFJ-230 =41K BTU's??
  135. recovery system
  136. load calc
  137. no fan blowing
  138. Not Enough Return Air?
  139. Using HVAC Calc
  140. new furnace needed
  141. run time
  142. Exhaust Flue Question
  143. A/C freezing up
  144. a lot of water inside trane air handler
  145. radiant floor heat
  146. Carrier Infinity 16 vs Trane XL16i and 3 or 4 ton.
  147. Charge Line Purge Question
  148. Unit Short Cycling
  149. York Affinity Coil Pairing
  150. Heat pump with gas backup, questions.
  151. lennox drain problems
  152. history of lennox g61v
  153. Extended plenum size question.
  154. 90% furnace life span
  155. Evap Coil Upsizing
  156. replace my air&heating for a heat pump
  157. how to dry out the inside air handler
  158. "Variable Speed" Lennox vs Thermo Pride
  159. High Humidity
  160. calling robin boyd....
  161. dan sw fl- you wanted to know
  162. Replace Boots - Common Practice?
  163. radiant ceiling heat?
  164. Heat Pump Rating
  165. Breezaire WKS4000 Icing
  166. Water dripping on furnace filter
  167. Tappan vs. Ruud
  168. Balance points
  169. Trane 2tec 4tec a/h r22 and r410 the same
  170. 80% vs. 90% Gas Furnace
  171. Mini split heat pump...your expertise, please!!
  172. Trane vs. Amer. Stand. vs. Admiral vs. ??
  173. new A/C time after only 3 yrs
  174. Warranty for Nordyne
  175. location of the condensate drain for my trane air handler?
  176. Sealing a plenum
  177. Contractor has to redo duct work
  178. How much gas usage per pilot ??
  179. Aluminium brazing
  180. rheem 410a availability?
  181. Baldie......you opinion is needed
  182. Boiler replacement
  183. How does the HVAC Processes Work?
  184. contractors eyeballing my furnace size
  185. Condensation
  186. turtle or k fridge are you out there?
  187. CONDENSER FAN MOTOR TEMP
  188. Advice on balancing, line soldering, base
  189. Heil problems FYI
  190. Duct Layout - Full Radial?
  191. Are the New Modulating Thermostats Available Yet?
  192. Annual Service call
  193. Peerless or Weil McLain???
  194. whole house humidifier -- hearing mixed opinions from contractors
  195. Trane Vari Trac Comfort system Indianpolis
  196. Coil freezing or defective?
  197. Trane air handler & compressor sizing/choices
  198. which ignitor 2 use
  199. Compressor Delay
  200. Trane vs. Carrier
  201. difference between hvac and a/c
  202. Concord Furnance?
  203. Mini-Duct manufacturers
  204. cruiseair
  205. txv bleed or no-bleed?
  206. What will happen in winter?
  207. Galvanized pipes okay in a hydronic heat system ?
  208. Generator Question (is this OK here?) Propane powered vs Diesel Powered?
  209. gas boiler vented to chimney
  210. Caoted coil - no luck
  211. Bypass & Solenoid Valves
  212. Old furnaces vs. new furnaces
  213. Fan replaceable or entire system dead? (jenijunk)
  214. New Trane System Overcharged
  215. Testing Ducts
  216. Questions re: Hydro Air and Radiant Heat with liquid propane
  217. Combustion Air Hack Job?
  218. Need opinions on equipment - prices removed
  219. Draft Inducer Blower for Williamson Furnace
  220. Any thoughts on Sears as an Air Conditioning Contractor?
  221. New 13 SEER Trane with an Old A/C Compressor
  222. outdoor thermostat/ aux lockout
  223. Possible to fix this type of leak?
  224. What size BTU?
  225. 2-stage thermostat
  226. Water Furnace
  227. Help me make sense of advice
  228. Wireless thermostats
  229. Again, anyone have opinions regarding Retrotec Vs. Energy Conservatory gear?
  230. Buderus Oil boiler replacement
  231. Lochinvar Knight Boiler
  232. Question about cool nights
  233. Looking for a furnace that does not use fibreglass insulation
  234. Control Module question
  235. ameristar & american standard heat pumps
  236. Modulating Thermostat Model #?
  237. Skinny on Friedrich Packaged Heat Pumps
  238. Bad Filter or Bad Unit
  239. Has anyone considered....
  240. System Replacement Advice Needed
  241. Is my new system correct?
  242. Bryant 355AV 90I, Variable Speed Fan control
  243. Furnace keeps blowing fuse
  244. differential in supply and return air?
  245. How many return ducts are needed?
  246. Electronic Air Cleaner with/without standard filter
  247. Statics Pressures
  248. Heating Season is Coming
  249. LEAK DETECTOR
  250. capacitors