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  1. Furnace filter size
  2. Dirtiest Filter
  3. Cold supply air
  4. Natural gas grey pipe
  5. Opening maintenance panels
  6. New article: Building Cavities used as Supply or Return Ducts.
  7. Heater is the summer
  8. Carrier furnaces
  9. Auxillary heat on 6 year old heat pump
  10. Baseboard - 208v - temp range
  11. Heat Pump AC in Ca condo
  12. Flexible gas appliance connector
  13. Furnace and A/c age
  14. International of Utica
  15. They said....
  16. Antique Thermostat?
  17. HP Overfused?
  18. How many vent details?
  19. AC condensate to sink drain
  20. Boiler pressure relief valve
  21. Free webinar on inspecting gas-fired furnaces tomorrow (Wed) night.
  22. Relief Damper in Attic Space
  23. Luxaire Brand Furnace Age
  24. Armstrong Furnace Age... 40s era?
  25. PIC: That's one way, I guess.
  26. gas shut off for room heater
  27. Capacity of HVAC system
  28. Heat Pump heating at 125 degrees
  29. Attic furnace venting
  30. Wall Heater by a window ...is it ok?
  31. Do You Know Who is Peeing on Your Air Conditioner?
  32. Central environmental systems A/C
  33. Thanks to the following people
  34. What would Charley say?
  35. This one's for Larson, why I don't recommend humidifiers part 2
  36. No plenum
  37. www.buildingcenter.org is #1
  38. Supply duct question
  39. High efficiency furnace exhaust
  40. ventless gas logs
  41. Tankless water heater used for radiant heat
  42. Need help
  43. Testing Heat/pump/AC
  44. Combustion air from attic
  45. inspecting humidistats
  46. What If Home Builders Had to Pay the Energy Bills?
  47. PVC Venting
  48. Furnace clearance from Dow styrofoam sheathing
  49. Common venting of Furnace & Water heater
  50. furnace and water connection
  51. Date code for GE air conditioner
  52. Flex hose used in fire box...Question
  53. I called this out.
  54. Return on pellet stove
  55. Line set under slab
  56. Crown boiler
  57. Multiple filters
  58. Main service panel acting as a service disconnect
  59. Asbestos Tape
  60. "Ask This Old House"
  61. Boiler Recall
  62. Do you pull service disconnects?
  63. U.S. Dept of Energy includes InterNACHI article in Building America Solution Center.
  64. Honeywell 8000 Thermostat Issues
  65. 3 Ways to Tell if That Contraption Is a Heat Pump or an AC
  66. Envenenamiento con Monóxido de Carbono y Cómo Detectarlo
  67. Damaged Electric Heat found by Knoxville TN home inspector
  68. WiseHeat Thoughts?
  69. 47 year old old steam boiler
  70. Age
  71. Heat pump/(a/c) unit identification
  72. hvac venting issue
  73. Drip legs
  74. First 10 to reply win Inspecting HVAC Systems book (hard copies).
  75. Heat Pump Testing
  76. Why use duct tape when...
  77. Furnace condensate drain terminates onto crawlspace floor.
  78. Necessary to note supply legs without dampers ?
  79. Boiler
  80. Pellet Stove vent
  81. Crown boiler recall
  82. Add on Chimney
  83. Oil tank in Crawlspace
  84. need age/size for Goettl HP
  85. International sales company furnace
  86. Dunkirk Boiler manufactured for Montgomery Ward
  87. Geo-thermal HVAC, do you inspect or not
  88. Age of Goodman AC
  89. Cracked heat exchanger?
  90. Would you comment on this
  91. Attic vent fan
  92. New online "How to Inspect Fireplaces, Stoves, and Chimneys" course for inspectors
  93. Duct work SNAFU
  94. Need help, age of GE furnace
  95. Furnace room ventilation
  96. Crawlspace Heating
  97. Cold air return attached to exterior vent
  98. Old Lennox
  99. The Hidden Dangers Lurking Within the HVAC System
  100. Vent Free Gas Log in Wood Fireplace
  101. Keeping ahead of the curve
  102. Checking Heat Pump in heating mode when its 80 degrees outside?
  103. Looking up of a A/C unit
  104. I did it again
  105. Pellet stove exhaust
  106. Exhaust air near heat pump
  107. Conductor and HVAC Breaker Compatibility
  108. Boiler age
  109. Unvented Crawl Space
  110. Chimney flue clearance to wall
  111. Air Return Vent
  112. Trinity Ti150 Troubleshoot
  113. Abandoned gas furnace in crawlspace
  114. New, Third Edition of Inspecting HVAC Systems book.
  115. Another mess
  116. Ventilation System Canadian Style
  117. What in your opinion
  118. HVAC UV devices
  119. Do you call this for repairs
  120. Open return (wet basemet) (toilet)
  121. Hvac height in garage
  122. direct vent furnace
  123. Don't assume???????
  124. Weil Mclain Cp lookup tool
  125. Fresh air intake question
  126. What do folks see wrong?
  127. 750 square foot condo...2 1/2 ton AC with 75,000 btu gas furnace
  128. Is this fan on a vent motor cracked or typical
  129. year of unit
  130. What is the tonnage of this Ruud .
  131. date this furnace
  132. Physical Damage - But keeping the house cool...Need advice
  133. Ductwork
  134. Poor cooling for new Puron AC unit or just the way some of them work?
  135. Inspecting Heat Pumps
  136. Breaker Size
  137. Low Freon or leakage
  138. Furnace intake not outside.
  139. Direct Vent pipe inside cold ait return
  140. Fire Block?
  141. Amp rating on AC unit.
  142. Old Rheem. AHU Inop. Did I...
  143. determining seer?
  144. Excessive Mildew Exterior of Plenum - 6 Year Old House
  145. 101 outside ambient
  146. Condensation on duct in crawlspace
  147. Poisiones gas escaping
  148. First time I've seen this...
  149. Intake air to furnace
  150. short of combustion air?
  151. Pellet burner as main heat source?
  152. What to do What to do
  153. Advanced HVAC video training for home inspctors on USB drive.
  154. Flex furnace vent connector
  155. Tuesdays brain twister
  156. Freshair supply for electric furnace
  157. Duct Connected to Chimney
  158. Thoughts
  159. bypassing a thermo stat
  160. Another use for secondary drain
  161. Propane tank clearance from overhead heating vent
  162. Hearth requirement pellet stove?
  163. Charley B or David A
  164. Old oil burner furnace abandoned in crawlspace
  165. Power vent + direct vent?
  166. Age of Fedders unit.
  167. Vent for floor heater
  168. Air Handler rating
  169. Gas Firplace fog
  170. Fujitsu Mini Split
  171. HVAC Question
  172. Carrier Size
  173. Gibson/Nordyne ?
  174. Haier Condenser Manufacture Date
  175. Plastic Gas pipe in furnace room
  176. Flue exhaust in chimney for furnace
  177. Is this right?
  178. Dating a Goodman
  179. furnace date for Air ease?
  180. Is a drip leg required on a gas line to the furnace or the water heater in Calif?
  181. Appliance Date
  182. Never had this...
  183. Exhaust/intake vent under a deck
  184. Did I break it? ...Heat pump
  185. Heat pump
  186. Thermostats that make a clicking noise
  187. Green Ductwork
  188. Condensate drain
  189. Blower assembly at termination of dryer duct...
  190. Dornback Furnace
  191. Sweating
  192. Which outside ac unit went where?
  193. Ac Date?
  194. Poor cooling, not very old outside unit evidently performed well
  195. Dampers in Heat Ducts
  196. Unusual Venting
  197. Malibu Slant/Fin Boiler Age?
  198. How old am I?
  199. HVAC unit - air blowing out of cabinet
  200. electric baseboard heater
  201. Furnace room door opens in
  202. Clare furnace age
  203. Trane System Blower Motor
  204. Unreadable Data Plates
  205. PVC Dryer Vent
  206. Electric Water Heater
  207. Electric Water Heater
  208. Need help dating Water Furnace Geothermal
  209. Florida Heat Pump Question
  210. 1967 Electrical furnace
  211. Temperature differential
  212. Why Would There Be A Hot Spot On This Furnace?
  213. What are these parts on a boiler?
  214. Screw in the cooper pipe of the boiler???
  215. Service switch
  216. Furnace burn
  217. Not for Larson's eyes
  218. GE HVAC Date Code - age needed?
  219. Soot-like ceiling marks
  220. Through wall mold ac
  221. Water Heater Flue set up
  222. HVAC with plastic exhaust vent pipe ... need advice, Pics incuded
  223. Oversized
  224. Painted furnace flue?
  225. Suspected asbestos
  226. Red flags for central split systems
  227. Need Some Help With The Age Of An American Standard Boiler Please
  228. Intake
  229. Singer a.c.
  230. High rise condo HVAC question
  231. Corrugated plastic water heater flue? Lochinvar DVN040-1 unit
  232. Plastic for furnace....vent ducting
  233. AHIT Opinion On Inspecting Air Cooled AC's
  234. Scorch marks
  235. humming sound
  236. Lennox pulse
  237. Drywall separating the enclosure from the Attic
  238. Special Thanks from the Building Intelligence Center
  239. And the winner is....
  240. Burnt my arm
  241. Btu output
  242. Age of Day and night furnace
  243. Heat pump AHU
  244. Message Board responses
  245. Shared venting
  246. Gas Fireplace using Class A vent
  247. Amana Heat pump age...9601275433
  248. Age for Florida Heat Pump (FHP)
  249. mor-flo air heater age
  250. Tell me what you see or would tell your client