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