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  1. Freshair supply for electric furnace
  2. Duct Connected to Chimney
  3. Thoughts
  4. bypassing a thermo stat
  5. Another use for secondary drain
  6. Propane tank clearance from overhead heating vent
  7. Hearth requirement pellet stove?
  8. Charley B or David A
  9. Old oil burner furnace abandoned in crawlspace
  10. Power vent + direct vent?
  11. Age of Fedders unit.
  12. Vent for floor heater
  13. Air Handler rating
  14. Gas Firplace fog
  15. Fujitsu Mini Split
  16. HVAC Question
  17. Carrier Size
  18. Gibson/Nordyne ?
  19. Haier Condenser Manufacture Date
  20. Plastic Gas pipe in furnace room
  21. Flue exhaust in chimney for furnace
  22. Is this right?
  23. Dating a Goodman
  24. furnace date for Air ease?
  25. Is a drip leg required on a gas line to the furnace or the water heater in Calif?
  26. Appliance Date
  27. Never had this...
  28. Exhaust/intake vent under a deck
  29. Did I break it? ...Heat pump
  30. Heat pump
  31. Thermostats that make a clicking noise
  32. Green Ductwork
  33. Condensate drain
  34. Blower assembly at termination of dryer duct...
  35. Dornback Furnace
  36. Sweating
  37. Which outside ac unit went where?
  38. Ac Date?
  39. Poor cooling, not very old outside unit evidently performed well
  40. Dampers in Heat Ducts
  41. Unusual Venting
  42. Malibu Slant/Fin Boiler Age?
  43. How old am I?
  44. HVAC unit - air blowing out of cabinet
  45. electric baseboard heater
  46. Furnace room door opens in
  47. Clare furnace age
  48. Trane System Blower Motor
  49. Unreadable Data Plates
  50. PVC Dryer Vent
  51. Electric Water Heater
  52. Electric Water Heater
  53. Need help dating Water Furnace Geothermal
  54. Florida Heat Pump Question
  55. 1967 Electrical furnace
  56. Temperature differential
  57. Why Would There Be A Hot Spot On This Furnace?
  58. What are these parts on a boiler?
  59. Screw in the cooper pipe of the boiler???
  60. Service switch
  61. Furnace burn
  62. Not for Larson's eyes
  63. GE HVAC Date Code - age needed?
  64. Soot-like ceiling marks
  65. Through wall mold ac
  66. Water Heater Flue set up
  67. HVAC with plastic exhaust vent pipe ... need advice, Pics incuded
  68. Oversized
  69. Painted furnace flue?
  70. Suspected asbestos
  71. Red flags for central split systems
  72. Need Some Help With The Age Of An American Standard Boiler Please
  73. Intake
  74. Singer a.c.
  75. High rise condo HVAC question
  76. Corrugated plastic water heater flue? Lochinvar DVN040-1 unit
  77. Plastic for furnace....vent ducting
  78. AHIT Opinion On Inspecting Air Cooled AC's
  79. Scorch marks
  80. humming sound
  81. Lennox pulse
  82. Drywall separating the enclosure from the Attic
  83. Special Thanks from the Building Intelligence Center
  84. And the winner is....
  85. Burnt my arm
  86. Btu output
  87. Age of Day and night furnace
  88. Heat pump AHU
  89. Message Board responses
  90. Shared venting
  91. Gas Fireplace using Class A vent
  92. Amana Heat pump age...9601275433
  93. Age for Florida Heat Pump (FHP)
  94. mor-flo air heater age
  95. Tell me what you see or would tell your client
  96. Boiler Question
  97. New, free, downloadable HVAC Inspector logo.
  98. I'm no HVAC tech...
  99. Boiler
  100. Floridians learning about boilers?
  101. Interesting statistic about CO deaths
  102. Crystals in vent.
  103. Water Heater Tied into Boiler
  104. Small vent
  105. Type B vent termination question
  106. What is this for? Fresh air intake or exhaust?
  107. Age of GWA boiler
  108. Spray Foam and Fiberglass Insulation
  109. Patio Enclosure distribution
  110. Odd stack of appliances
  111. Crane Air Handler Age
  112. Inline Duct Fans
  113. Sidewall venting height requirements
  114. Bosch FHP Age
  115. Humidifier ?
  116. High Efficiency Gas furnace Vent
  117. Heat pump
  118. What do you say about this??
  119. Anybody help with the filter on this HVAC system?
  120. Need to identify age of an Amana A/C Condenser
  121. Air handler drip pan
  122. Air handler support
  123. York condenser age? Old for house....
  124. Call it out or not?
  125. Refrigerant line coil
  126. Gas Furnace/Water Heater Vent Issue?
  127. Heat pump
  128. How Do You Determine if Radiant Heat is Working
  129. Hydrotherm boiler age?
  130. See anything?
  131. Need help identifying age and size of Weather King Air Handler
  132. Rheem furnaces
  133. Furnace performing as intended
  134. Water Furnace age and TPR question
  135. Compressor covers
  136. Help needed with oil burner vent
  137. 4 appliances into 1 vent
  138. Open Vent?
  139. Question about gas furnace I inspected yesterday
  140. Ice on B-vent
  141. Just put the flue.....right there
  142. Furnace Date Help
  143. hydronic forced air furnace?
  144. Laars boiler in crawlspace
  145. Total Cluster ???????
  146. New InterNACHI article: Homeowner Maintenance: Changing the HVAC Filter.
  147. U.S. drops rule requiring more efficient furnaces
  148. No inspection today?
  149. Chaaaarleeeey
  150. An Apparent Short?
  151. Amp draw
  152. HE and WH power vent <18" from electric meter
  153. Furnace chimney?
  154. High eff furnace flue
  155. Ghosts?
  156. Lennox Furnace
  157. Unitary AC
  158. Second furnace in garage with register?
  159. What are these?
  160. Inspecting air flow balance
  161. Updated InterNACHI Gallery graphic of the expansion tanks for the boiler system
  162. Lennox Equipment Nomenclature
  163. Have you seen this heater attachment?
  164. Flue Venting Gone Wild
  165. Make up on externally vented furnace?
  166. Miller Air Handler age?
  167. Heat Exchanger
  168. Exterior of HVAC - Attic ducting...coming apart...Need advice
  169. Fireplace
  170. Watched exchanger being inspected
  171. Insulated ducting
  172. Age for Dayton furnace needed.
  173. Help with furnace age
  174. Age of "Water Furnace" Geo-Thermal Heat-Pumps
  175. Signature Manufactured for Montgomery Ward
  176. Heat pump flow
  177. HVAC
  178. heat pump cycling before reaching set point
  179. Temp-O-Matic Furnace Age
  180. baseboard heaters
  181. Single Wall vent pipe question
  182. condenser platform
  183. Heat Pump moisture
  184. Heat pump or not!!
  185. High efficiency furnace vent
  186. Need Armstrong furnace age
  187. Wards Heater age
  188. Furnace flue wind cap ?
  189. Heat pumps what is wrong with this pic
  190. York Help
  191. Un-capped vent...does it need a cap ?
  192. What age is this
  193. Venting
  194. turning on gas
  195. Homemade AC System
  196. Would you write this up
  197. Does anyone know what this is?
  198. CO Gas Detectors and Analyzers for home inspections
  199. HRV trumps "fan only" mode?
  200. American Standard/Trane Furnace age please?
  201. Trane Aux. Heat ran for 2 hrs.
  202. York age please
  203. Drops per run of supply air duct
  204. Defective chimney
  205. 2 AC units and 1 air handler
  206. Duct from supply to return
  207. Underground oil storage tank
  208. Anybody offer acid tests to refrigerant systems?
  209. Furnace adequecy
  210. Heating System Shut Off Switch Location
  211. Furnace backdrafting into home.
  212. Duomatic Olsen furnace age??
  213. Valve in condensate line.
  214. Vacations
  215. Need some advice
  216. Mismatched System
  217. under pressure.
  218. Soffit venting for bath fan OK?
  219. Ancient Space Heater
  220. PVC 40 fittings used for HE furnace vent
  221. AC older than House?
  222. NACHI.TV releases free online training video "Find the Crack in the Heat Exchanger"
  223. how old is this furnace?
  224. LP Gas Tank at Window
  225. AC reset question
  226. Heat exchanger inspections
  227. Air Return question
  228. positive pressure
  229. ABS acceptable for combustion vent
  230. Heil Air Handler Size Help
  231. Heat Exchanger?
  232. geothermal heat/cool
  233. Mercury Thermostat
  234. Secondary condensation Cap question
  235. Defective Installation HVAC
  236. How many tons are needed?
  237. Help Identify
  238. Dryer Vent Pipe
  239. New use for Cicken Pot Pie Pan
  240. Water htr close to furnace
  241. National US Radiator
  242. Boiler noise?
  243. Hot spots on A/C?
  244. Say Good by to bulky RTU's
  245. Old
  246. What is the Manufacture
  247. Water Heater vent pipe connection...Need advice
  248. Air returns in wall chases
  249. Looks like a painted Transite duct vent running thru the Bedroom closet
  250. Need help with condenser/date