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