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  1. HVAC Training
  2. Heat Pumps and Condensate Pumps
  3. uninsulated ductwork in basement
  4. Cold Air Return
  5. Combustion Test?
  6. Oil fired boiler
  7. Furnace on its back
  8. Combustion Air in crawlspace
  9. First 10 members to reply win InterNACHI's HVAC Inspections book.
  10. Need help on age
  11. Furnace Condensate Line Drain
  12. Older Working Floor Heater...I have a question..
  13. How Many Un-vented Gas Appliances?
  14. Electric heater inspetion
  15. Anyone seen one of these?
  16. Z Vent for Boiler
  17. Troubleshooting a RUUD High Efficiency Furnace
  18. Furnace question
  19. Heat Pump
  20. Age Of Furnace
  21. Return and Supply in Crawlspace
  22. HVAC vent
  23. Masonry fireplace w/ B vent
  24. Large temp delta on supply
  25. Forced Hot Air Furnace No Air Returns
  26. water heater and furnace venting into an open tube, not sealed
  27. Noisy mechanical room
  28. Flexible vent on gas water heater?
  29. They don't make em like they used to
  30. What is this?
  31. Oil Tank Repair ?
  32. Help with Propane stove vent clearances near windows. (Maine)
  33. Anybody like to decode this model number for age? Old Westinghouse.
  34. Boiler flue slope
  35. Natural Gas BBQ allowed in Ontario
  36. Old Armstrong Furnace
  37. Coil dripping condensate
  38. Geothermal Heating and Cooling Preformance Evaluations
  39. Hot spots on welds-Heat Exchangers
  40. Ingersoll Furnace Age - Help
  41. Air Handler
  42. R-22 in 2013 system
  43. Mitsubishi slim age
  44. Dryer vent pipe repair??
  45. Attic fan or house fan ?
  46. tonnage
  47. just to make sure I am not crazy
  48. Goodman A/C Recall
  49. Stuck
  50. Condensation Under Air Handler
  51. A/C register temp
  52. Guidance on HVAC inspections
  53. Condensate in Waste Line
  54. Testing Heat/AC
  55. Stove hood vents to attic - recommend out thru roof?
  56. Inspecting Air Handlers and Condensers
  57. McQuay air handler
  58. Oil tank vent?
  59. Sweating air handler
  60. No return ductwork
  61. How do you determine improper air flow
  62. Air conditioning return
  63. What is that smell?
  64. Low voltage wiring
  65. obstructed rag
  66. Correct combustion intake location/configuration?
  67. Primary A/C Drain
  68. Geothermal Open or Closed Loop?
  69. Ac refridgerant line
  70. Circulating Pump Hydronic
  71. Rust in Furnace
  72. Hydronic HVAC Age
  73. Fresh Air Makeup ?
  74. Did I say I like IR
  75. McQuay Question
  76. filter maintenance hint...
  77. 2nd floor radiant heat access panel
  78. gas fireplace vent?
  79. Commercial HVAC
  80. how long can it be?
  81. Help with Comfortmaker Date Codes Please
  82. Inspecting Furnace in Summer Months
  83. Negative pressure in furnace room
  84. Pressure relief valve?
  85. co / smoke detector
  86. Very old boiler steam convert
  87. HVAC new systems
  88. Help With GE Furnace Age
  89. New furnace discharge pipe?
  90. Furnace age
  91. Polaris Water Heater
  92. Makeup air
  93. Age of American Standard Electric Furnace
  94. Not many around like this one
  95. Oil furnace-fuel oil or service oil leak?
  96. Online boiler age lookup ?
  97. Bryant HVAC Age
  98. Dual fuel HP
  99. Anyone know what brand air conditioner this is?
  100. My son converting from oil to gas
  101. Unfiltered outside air intake on return
  102. Got burned pretty good today....
  103. Condensate Drain
  104. How do you say fire
  105. Age of Carrier AC - 38GS036-310
  106. Basic electrical for A/C units
  107. Geothermal or heat pump?
  108. What is this?
  109. Multiple Chimney Flue's Same Height ?
  110. Distribution air duct beneath a slab foundation
  111. Can anyone help me date this furnace?
  112. Venting of High Efficiency
  113. low flow at registers
  114. Floor warming system?
  115. Furnace filter size
  116. Dirtiest Filter
  117. Cold supply air
  118. Natural gas grey pipe
  119. Opening maintenance panels
  120. New article: Building Cavities used as Supply or Return Ducts.
  121. Heater is the summer
  122. Carrier furnaces
  123. Auxillary heat on 6 year old heat pump
  124. Baseboard - 208v - temp range
  125. Heat Pump AC in Ca condo
  126. Flexible gas appliance connector
  127. Furnace and A/c age
  128. International of Utica
  129. They said....
  130. Antique Thermostat?
  131. HP Overfused?
  132. How many vent details?
  133. AC condensate to sink drain
  134. Boiler pressure relief valve
  135. Free webinar on inspecting gas-fired furnaces tomorrow (Wed) night.
  136. Relief Damper in Attic Space
  137. Luxaire Brand Furnace Age
  138. Armstrong Furnace Age... 40s era?
  139. PIC: That's one way, I guess.
  140. gas shut off for room heater
  141. Capacity of HVAC system
  142. Heat Pump heating at 125 degrees
  143. Attic furnace venting
  144. Wall Heater by a window ...is it ok?
  145. Do You Know Who is Peeing on Your Air Conditioner?
  146. Central environmental systems A/C
  147. Thanks to the following people
  148. What would Charley say?
  149. This one's for Larson, why I don't recommend humidifiers part 2
  150. No plenum
  151. www.buildingcenter.org is #1
  152. Supply duct question
  153. High efficiency furnace exhaust
  154. ventless gas logs
  155. Tankless water heater used for radiant heat
  156. Need help
  157. Testing Heat/pump/AC
  158. Combustion air from attic
  159. inspecting humidistats
  160. What If Home Builders Had to Pay the Energy Bills?
  161. PVC Venting
  162. Furnace clearance from Dow styrofoam sheathing
  163. Common venting of Furnace & Water heater
  164. furnace and water connection
  165. Date code for GE air conditioner
  166. Flex hose used in fire box...Question
  167. I called this out.
  168. Return on pellet stove
  169. Line set under slab
  170. Crown boiler
  171. Multiple filters
  172. Main service panel acting as a service disconnect
  173. Asbestos Tape
  174. "Ask This Old House"
  175. Boiler Recall
  176. Do you pull service disconnects?
  177. U.S. Dept of Energy includes InterNACHI article in Building America Solution Center.
  178. Honeywell 8000 Thermostat Issues
  179. 3 Ways to Tell if That Contraption Is a Heat Pump or an AC
  180. Envenenamiento con Monóxido de Carbono y Cómo Detectarlo
  181. Damaged Electric Heat found by Knoxville TN home inspector
  182. WiseHeat Thoughts?
  183. 47 year old old steam boiler
  184. Age
  185. Heat pump/(a/c) unit identification
  186. hvac venting issue
  187. Drip legs
  188. First 10 to reply win Inspecting HVAC Systems book (hard copies).
  189. Heat Pump Testing
  190. Why use duct tape when...
  191. Furnace condensate drain terminates onto crawlspace floor.
  192. Necessary to note supply legs without dampers ?
  193. Boiler
  194. Pellet Stove vent
  195. Crown boiler recall
  196. Add on Chimney
  197. Oil tank in Crawlspace
  198. need age/size for Goettl HP
  199. International sales company furnace
  200. Dunkirk Boiler manufactured for Montgomery Ward
  201. Geo-thermal HVAC, do you inspect or not
  202. Age of Goodman AC
  203. Cracked heat exchanger?
  204. Would you comment on this
  205. Attic vent fan
  206. New online "How to Inspect Fireplaces, Stoves, and Chimneys" course for inspectors
  207. Duct work SNAFU
  208. Need help, age of GE furnace
  209. Furnace room ventilation
  210. Crawlspace Heating
  211. Cold air return attached to exterior vent
  212. Old Lennox
  213. The Hidden Dangers Lurking Within the HVAC System
  214. Vent Free Gas Log in Wood Fireplace
  215. Keeping ahead of the curve
  216. Checking Heat Pump in heating mode when its 80 degrees outside?
  217. Looking up of a A/C unit
  218. I did it again
  219. Pellet stove exhaust
  220. Exhaust air near heat pump
  221. Conductor and HVAC Breaker Compatibility
  222. Boiler age
  223. Unvented Crawl Space
  224. Chimney flue clearance to wall
  225. Air Return Vent
  226. Trinity Ti150 Troubleshoot
  227. Abandoned gas furnace in crawlspace
  228. New, Third Edition of Inspecting HVAC Systems book.
  229. Another mess
  230. Ventilation System Canadian Style
  231. What in your opinion
  232. HVAC UV devices
  233. Do you call this for repairs
  234. Open return (wet basemet) (toilet)
  235. Hvac height in garage
  236. direct vent furnace
  237. Don't assume???????
  238. Weil Mclain Cp lookup tool
  239. Fresh air intake question
  240. What do folks see wrong?
  241. 750 square foot condo...2 1/2 ton AC with 75,000 btu gas furnace
  242. Is this fan on a vent motor cracked or typical
  243. year of unit
  244. What is the tonnage of this Ruud .
  245. date this furnace
  246. Physical Damage - But keeping the house cool...Need advice
  247. Ductwork
  248. Poor cooling for new Puron AC unit or just the way some of them work?
  249. Inspecting Heat Pumps
  250. Breaker Size