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  1. Down Periscope or Crazy A/C Venting Gone Wrong?
  2. combustion air and exhaust appear merged
  3. Close the combustion air...
  4. Gas only fireplace hearth requirments
  5. Age Code App
  6. Ducts to fresh air
  7. Flex hose connected to fireplace manifild....Need advice
  8. Water heater vent ducting...need advice
  9. Does this Heater vent need a heat collar?
  10. Exposed chimney in bedroom
  11. David or Charley
  12. Venting Narrative
  13. AC differential temps
  14. What's Your Narrative on This One?
  15. Age of furnace
  16. secondary drain on a vertical unit
  17. Help With Geo-Thermal Heat Pump
  18. VERY humid AC air
  19. Exposed B-Vent in closet
  20. Need an opinion
  21. Unknown thingy on water heater
  22. Crane heating unit age?
  23. Hot water Boiler age (Bryant)
  24. Sidewall Vents in Vertical Position
  25. First For Me
  26. waterless traps
  27. HVAC Plumbing
  28. Old oil furnace
  29. Tempstar - Burner problems?
  30. Home Heating Oil Tanks. Another InterNACHI inspection-related article.
  31. best technique opinions
  32. Burn baby Burn!!
  33. Dryer vent screen
  34. Older Bard AC condenser
  35. Off Season Testing
  36. Maratherm AC tonnage and age
  37. Boiler in garage Part II
  38. Excessive moisture in exhaust pipe.
  39. When would a vent be required in a bathroom?
  40. Hot duct?
  41. breaker too large for AC
  42. Never seen this done before - stripped the outside off of flue
  43. Boiler / W/H in garage?
  44. CSA approved
  45. Anybody seen these yet?
  46. Need age of Miller Gas Furnace
  47. Need advice
  48. Need advice
  49. Help
  50. Broan
  51. One just for Charley
  52. Weil-McLain Boiler Age help requested
  53. Whats the problem?
  54. Geothermal
  55. Disconnected AC ducing....Need feedback
  56. only have seral #
  57. Is my A/C evaporator broken?
  58. Furnace Maintenance - Keep Your Furnace Clean!
  59. Do you thinks it will pass inspection?
  60. York age
  61. Roof top heat pump units
  62. Water trap?
  63. Age on Kewanee boiler
  64. air duct penetrating garage wall
  65. Furnace in attic
  66. Water filled ducting
  67. Maybe next time around......
  68. AAF
  69. disconnect for red package unit
  70. Mildew on mastic @ plenum 10 month home
  71. Fan A/C compressor
  72. Age of unit
  73. Gas Pack Unit
  74. Does any one know how to read this
  75. high humidity and floor lifting
  76. Ducane A/C Compressor age
  77. Heil - Intl Comfort
  78. Source to Determine HVAC Manufacture Date
  79. Coleman condenser age
  80. need to find age of free standing furnace
  81. New Roof...New Siding...New HVAC...
  82. Kelvinator Furnace age?
  83. Need code reference for AC condensate drain line
  84. Age and tonage of split central air unit handler
  85. Upper Element
  86. Cast iron Galaxy boiler age?
  87. Help with age
  88. Age of a Luxaire(?) Unit
  89. Age of Carrier A/H
  90. Help with Wiring
  91. Combination water heater/space heater
  92. Sharp-GE A/C recall
  93. Furnace exhaust
  94. Buderus date code
  95. How Old - Airtemp nat gas furnace?
  96. Air exchanger recall
  97. duct work
  98. Water Damaged surfaces within the HVAC return - do you test?
  99. Any chance this is not Asbestos ?
  100. Peerless boiler age
  101. another return air...
  102. Permits ignored. Re-do costs $$$. Whose fault?
  103. Code - Backup condensate drain line being plumbed to exterior
  104. Heat exchangers - visible defects
  105. A/C compressor fins?
  106. Age of Coleman AC
  107. What would you say about this vent placement?
  108. Age of Fedders unit.
  109. Cold air return duct placement
  110. Thermostat?
  111. InterNACHI HVAC Training Video (Indexed)
  112. A little rattle.........
  113. Furnace flue
  114. Age of air conditioners
  115. Partially Buried Oil Tank in Basement Question
  116. What is the Free Area of Register Covers?
  117. How not to install a return air
  118. Well head or fill pipe?
  119. I don't understand
  120. Heil oil furnace age
  121. WYE????
  122. Water Heater Exhaust Location with Furnace and Masonry Chimney
  123. Comfortmaker date of manufacture?
  124. Black soot in HE furnace vent
  125. Asbestos??
  126. Weil McLain CP Lookup
  127. Research into copper coils and pans
  128. Amana Furnace Age
  129. Should I run the AC?
  130. Furnace Age
  131. What is this thing in the return plenum box?
  132. Dryer vented into garage
  133. Armstrong eg6g100dc20-4 furnace problems
  134. Ducting Question....
  135. Checking the float switch
  136. Is the HRV part of the SOP
  137. Garage question
  138. exhaust pipe enlarged...a text book no-no
  139. Furnace exhaust too close to heat pump
  140. Attic upflow furnace
  141. TPR - pipe run...question
  142. Plugged and Clogged Condensate and A Coil
  143. Montgomery Ward Signature Age
  144. Need help today with geo thermal date
  145. Late model Westinghouse furnace age
  146. HVAC
  147. Age of units
  148. Mitsubishi Electic System
  149. Trane Heat Pump - right choice for Illinois?
  150. Brock Elite Air Oil furnace
  151. Refrigerant Locking Caps
  152. Condensation Line
  153. Attic air handler installation
  154. steam pipe as heat source?
  155. Downdraft furnace question
  156. Geothermal - GFCI
  157. line size question
  158. Goodman Heat Pump or AC?
  159. Frosty ref. line at ev. coil?
  160. Unusual HVAC Vent
  161. Strange filter
  162. I do not see these too often
  163. R-410a
  164. a bit off topic...
  165. Testing HVAC equipment
  166. 2008 4 ton
  167. HVAC information
  168. Less than desirable supply air
  169. Electric furnace breaker
  170. What air exchanger filter in the attic/ Quel filtre de l'échangeur d'air au grenier?
  171. winchester furnace not working
  172. Anything wrong here??
  173. Compressor Disconnect Distance
  174. Need Date of Lennox Co Furnace (SR? 00 or 01 ?)
  175. Weil McLain Hot Water Boiler Age
  176. Does this scare you
  177. Advertised as Ice Cold AC!
  178. Just when you think you've seen it all...
  179. Armstron Heat Pump Age/Size
  180. VERY Old Furnace
  181. Olsen age
  182. pvc used as dryer vent
  183. Boiler date of manufacture
  184. Sorry, another furnace age help required
  185. Fedders AC Age
  186. HE furnace intake pipe in attic
  187. Argh! HEIL indoor electric unit needs info! age, etc
  188. Interesting Information
  189. Borg-Warner furnace age
  190. Heat Pump Garage Attic
  191. Barometric Damper
  192. Gas wood stove venting
  193. Exhaust termination ?
  194. Fireplace insert question?
  195. Is this a good idea for make up air?
  196. Acceptable Furnace Install in Sealed (foamed) attic
  197. Combustion air?
  198. Flex heating duct clearance
  199. Furnace age chart not correct?
  200. 13 or 14 SEER?
  201. Rust on metal chimney
  202. What are these for?
  203. funky heating duct
  204. Help with age please
  205. garage furnace
  206. Find the date of Air conditioners
  207. Age of Coleman gas furnace and Fedders A/C
  208. Damage from an unplugged condensate pump.
  209. Luxaire heater age?
  210. Bathroom fan vented to attic
  211. What is wrong with this picture
  212. Drain lines for HVAC
  213. Prelist inspection surprise
  214. Trane XE 1000 AC condenser
  215. AC Unit Help with age
  216. Boiler Age
  217. Steam Boiler Age
  218. Grimsby Oil Furnace age
  219. Check out the flame on this bad boy
  220. I need help!
  221. Humidifier Mounting Location
  222. When a high-efficiency condensing furnace is operating...
  223. '71 Bryant gas furnace still in operation
  224. HVAC Certification Form
  225. What do you think of this CSST safety checklist?
  226. Flame roll out
  227. Todays Inspection
  228. Very old apt bldg heating system questions
  229. Vents on roof,
  230. Age of GE compressor
  231. Three LP into one flue
  232. Blower size for a York
  233. Fraser Johnston Furnace Age
  234. Magic Chef furnace age/efficiency & upgrade advice needed
  235. Old TPR valve?
  236. Weil-McLain Boiler
  237. Poor line sizing?
  238. Heat pump drain over bathtub?
  239. Yesterday's inspection
  240. Ameri-Therm Vent Damper
  241. Furnace age please
  242. Heat lamp in bath
  243. Roofers...
  244. HVAC Disconnect
  245. What to do with a blocked condensate drain line
  246. Cause of this?
  247. Sizing A/C Units and Ducts
  248. Wood Pellet Stove Installation
  249. Manufacture date needed
  250. Trane Heat Pump