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  1. Vent termination under deck
  2. Sand in the ducts
  3. U's in forced air ductwork
  4. Oil Tank fill & vent ?
  5. InterNACHI publishes a new inspection book on Fireplaces, Stoves and Chimneys.
  6. Water lines connected to Air Handler
  7. Is this a true statement?
  8. SINGER AC date code
  9. You can't fix stupid
  10. The AHJ approved that
  11. Horizontal HVAC unit
  12. Evaporator size and Age
  13. I don't see many of these anymore
  14. Intertherm Model Identification
  15. Is this gas vent a possible ACM such as "Transite"?
  16. Mistbox lower HVAC costs?
  17. New Swamp Cooler graphic added to Inspection Graphic Library.
  18. HVAC guy says its okay
  19. Age of Boiler
  20. Boiler Age???
  21. Geothermal HVAC
  22. AC question
  23. two mini split questions
  24. Old Tranes Don't Die?
  25. California Code for Mini Split System
  26. Open vent going into the water heater exhaust piping
  27. SOP and heating equipment
  28. Gas boiler and WH in kitchen?
  29. High efficiency furnace condensate drain line
  30. Anyone seen a chimney do this before?
  31. Boiler and Gas WH Venting
  32. ceramic oil burning heater
  33. Gas furnace
  34. Mold on Coils
  35. Nordyne
  36. venting in crawl space
  37. Permaglas (A.O.Smith) Furnace age?
  38. gas pipe
  39. Melted Insulation on coolant line
  40. Is this legal?
  41. condensation drains
  42. Exhaust vent for furnace
  43. First time for this
  44. This is different...
  45. What's this
  46. for advanced lessons
  47. A/C manufacturer
  48. hydro air heating and AC
  49. plastic drain as supply ducts
  50. Website for data plate information
  51. What causes a heat pump transformer fuse to blow?
  52. Florida Tiki Torch! Must read..Yep!
  53. Fresh air from Attic Space
  54. Conditioned Crawl space
  55. Goodman heat pump - $100 LOL!
  56. What is this?
  57. Breaker buzz during start up
  58. A/C Brand/ Date
  59. Help with Exhaust vent and combustion vent clearance questions
  60. Flex Ducts In Garage
  61. Return within 10 feet
  62. Here are HVAC Date Codes
  63. Boiler Question
  64. Wall Heater Question
  65. Combustion Air Duct Connected to Return
  66. Flame roll out on furnace
  67. 1 May Florida HVAC change?
  68. Max length of A/C lines
  69. gas fireplace vent
  70. Heat pump checklist or narratives?
  71. I should write a book
  72. Copper Gate Valve on Gas Line
  73. b vent
  74. First Co. Apollo heat age
  75. Buderus Date of Manufacture?
  76. Inspecting Hydronic Radiator Heating
  77. Furnace return in mater bedroom
  78. Rheem Furnace
  79. Gooseneck rain cap?
  80. AC circuit breaker
  81. I stopped counting @ 7
  82. High efficnecy furnace vent pipes
  83. A/C data plate
  84. HVAC registers install in walk in closets
  85. Heat pump good or bad ?
  86. H.E. Boiler condensate
  87. Photo Requirement for HVAC Course
  88. Question on Copper Tubing
  89. Dog Urine on the AC Unit...Question
  90. AC Not Cooling
  91. HVAC Age Help
  92. No Return
  93. HVAC
  94. Combustion air vents
  95. Stainless only venting for Crown Boiler
  96. Equipment Disconnect Location
  97. Heat Pump Tonnage
  98. Apollo Hydroheat
  99. HVAC Returns
  100. Need HVAC tech in Summerville SC
  101. Restricted air flow.
  102. Appliance connector to Furnace
  103. Trane furnace age help
  104. TPRV placement
  105. TSTAT wire through vent?
  106. Iredell County Code - NC
  107. I need Charlie or David on this one.
  108. HVAC
  109. Air Handler mismatch with compressor
  110. Vent Cut
  111. HVAC Training
  112. Heat Pumps and Condensate Pumps
  113. uninsulated ductwork in basement
  114. Cold Air Return
  115. Combustion Test?
  116. Oil fired boiler
  117. Furnace on its back
  118. Combustion Air in crawlspace
  119. First 10 members to reply win InterNACHI's HVAC Inspections book.
  120. Need help on age
  121. Furnace Condensate Line Drain
  122. Older Working Floor Heater...I have a question..
  123. How Many Un-vented Gas Appliances?
  124. Electric heater inspetion
  125. Anyone seen one of these?
  126. Z Vent for Boiler
  127. Troubleshooting a RUUD High Efficiency Furnace
  128. Furnace question
  129. Heat Pump
  130. Age Of Furnace
  131. Return and Supply in Crawlspace
  132. HVAC vent
  133. Masonry fireplace w/ B vent
  134. Large temp delta on supply
  135. Forced Hot Air Furnace No Air Returns
  136. water heater and furnace venting into an open tube, not sealed
  137. Noisy mechanical room
  138. Flexible vent on gas water heater?
  139. They don't make em like they used to
  140. What is this?
  141. Oil Tank Repair ?
  142. Help with Propane stove vent clearances near windows. (Maine)
  143. Anybody like to decode this model number for age? Old Westinghouse.
  144. Boiler flue slope
  145. Natural Gas BBQ allowed in Ontario
  146. Old Armstrong Furnace
  147. Coil dripping condensate
  148. Geothermal Heating and Cooling Preformance Evaluations
  149. Hot spots on welds-Heat Exchangers
  150. Ingersoll Furnace Age - Help
  151. Air Handler
  152. R-22 in 2013 system
  153. Mitsubishi slim age
  154. Dryer vent pipe repair??
  155. Attic fan or house fan ?
  156. tonnage
  157. just to make sure I am not crazy
  158. Goodman A/C Recall
  159. Stuck
  160. Condensation Under Air Handler
  161. A/C register temp
  162. Guidance on HVAC inspections
  163. Condensate in Waste Line
  164. Testing Heat/AC
  165. Stove hood vents to attic - recommend out thru roof?
  166. Inspecting Air Handlers and Condensers
  167. McQuay air handler
  168. Oil tank vent?
  169. Sweating air handler
  170. No return ductwork
  171. How do you determine improper air flow
  172. Air conditioning return
  173. What is that smell?
  174. Low voltage wiring
  175. obstructed rag
  176. Correct combustion intake location/configuration?
  177. Primary A/C Drain
  178. Geothermal Open or Closed Loop?
  179. Ac refridgerant line
  180. Circulating Pump Hydronic
  181. Rust in Furnace
  182. Hydronic HVAC Age
  183. Fresh Air Makeup ?
  184. Did I say I like IR
  185. McQuay Question
  186. filter maintenance hint...
  187. 2nd floor radiant heat access panel
  188. gas fireplace vent?
  189. Commercial HVAC
  190. how long can it be?
  191. Help with Comfortmaker Date Codes Please
  192. Inspecting Furnace in Summer Months
  193. Negative pressure in furnace room
  194. Pressure relief valve?
  195. co / smoke detector
  196. Very old boiler steam convert
  197. HVAC new systems
  198. Help With GE Furnace Age
  199. New furnace discharge pipe?
  200. Furnace age
  201. Polaris Water Heater
  202. Makeup air
  203. Age of American Standard Electric Furnace
  204. Not many around like this one
  205. Oil furnace-fuel oil or service oil leak?
  206. Online boiler age lookup ?
  207. Bryant HVAC Age
  208. Dual fuel HP
  209. Anyone know what brand air conditioner this is?
  210. My son converting from oil to gas
  211. Unfiltered outside air intake on return
  212. Got burned pretty good today....
  213. Condensate Drain
  214. How do you say fire
  215. Age of Carrier AC - 38GS036-310
  216. Basic electrical for A/C units
  217. Geothermal or heat pump?
  218. What is this?
  219. Multiple Chimney Flue's Same Height ?
  220. Distribution air duct beneath a slab foundation
  221. Can anyone help me date this furnace?
  222. Venting of High Efficiency
  223. low flow at registers
  224. Floor warming system?
  225. Furnace filter size
  226. Dirtiest Filter
  227. Cold supply air
  228. Natural gas grey pipe
  229. Opening maintenance panels
  230. New article: Building Cavities used as Supply or Return Ducts.
  231. Heater is the summer
  232. Carrier furnaces
  233. Auxillary heat on 6 year old heat pump
  234. Baseboard - 208v - temp range
  235. Heat Pump AC in Ca condo
  236. Flexible gas appliance connector
  237. Furnace and A/c age
  238. International of Utica
  239. They said....
  240. Antique Thermostat?
  241. HP Overfused?
  242. How many vent details?
  243. AC condensate to sink drain
  244. Boiler pressure relief valve
  245. Free webinar on inspecting gas-fired furnaces tomorrow (Wed) night.
  246. Relief Damper in Attic Space
  247. Luxaire Brand Furnace Age
  248. Armstrong Furnace Age... 40s era?
  249. PIC: That's one way, I guess.
  250. gas shut off for room heater