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  1. How do you determine improper air flow
  2. Air conditioning return
  3. What is that smell?
  4. Low voltage wiring
  5. obstructed rag
  6. Correct combustion intake location/configuration?
  7. Primary A/C Drain
  8. Geothermal Open or Closed Loop?
  9. Ac refridgerant line
  10. Circulating Pump Hydronic
  11. Rust in Furnace
  12. Hydronic HVAC Age
  13. Fresh Air Makeup ?
  14. Did I say I like IR
  15. McQuay Question
  16. filter maintenance hint...
  17. 2nd floor radiant heat access panel
  18. gas fireplace vent?
  19. Commercial HVAC
  20. how long can it be?
  21. Help with Comfortmaker Date Codes Please
  22. Inspecting Furnace in Summer Months
  23. Negative pressure in furnace room
  24. Pressure relief valve?
  25. co / smoke detector
  26. Very old boiler steam convert
  27. HVAC new systems
  28. Help With GE Furnace Age
  29. New furnace discharge pipe?
  30. Furnace age
  31. Polaris Water Heater
  32. Makeup air
  33. Age of American Standard Electric Furnace
  34. Not many around like this one
  35. Oil furnace-fuel oil or service oil leak?
  36. Online boiler age lookup ?
  37. Bryant HVAC Age
  38. Dual fuel HP
  39. Anyone know what brand air conditioner this is?
  40. My son converting from oil to gas
  41. Unfiltered outside air intake on return
  42. Got burned pretty good today....
  43. Condensate Drain
  44. How do you say fire
  45. Age of Carrier AC - 38GS036-310
  46. Basic electrical for A/C units
  47. Geothermal or heat pump?
  48. What is this?
  49. Multiple Chimney Flue's Same Height ?
  50. Distribution air duct beneath a slab foundation
  51. Can anyone help me date this furnace?
  52. Venting of High Efficiency
  53. low flow at registers
  54. Floor warming system?
  55. Furnace filter size
  56. Dirtiest Filter
  57. Cold supply air
  58. Natural gas grey pipe
  59. Opening maintenance panels
  60. New article: Building Cavities used as Supply or Return Ducts.
  61. Heater is the summer
  62. Carrier furnaces
  63. Auxillary heat on 6 year old heat pump
  64. Baseboard - 208v - temp range
  65. Heat Pump AC in Ca condo
  66. Flexible gas appliance connector
  67. Furnace and A/c age
  68. International of Utica
  69. They said....
  70. Antique Thermostat?
  71. HP Overfused?
  72. How many vent details?
  73. AC condensate to sink drain
  74. Boiler pressure relief valve
  75. Free webinar on inspecting gas-fired furnaces tomorrow (Wed) night.
  76. Relief Damper in Attic Space
  77. Luxaire Brand Furnace Age
  78. Armstrong Furnace Age... 40s era?
  79. PIC: That's one way, I guess.
  80. gas shut off for room heater
  81. Capacity of HVAC system
  82. Heat Pump heating at 125 degrees
  83. Attic furnace venting
  84. Wall Heater by a window ...is it ok?
  85. Do You Know Who is Peeing on Your Air Conditioner?
  86. Central environmental systems A/C
  87. Thanks to the following people
  88. What would Charley say?
  89. This one's for Larson, why I don't recommend humidifiers part 2
  90. No plenum
  91. www.buildingcenter.org is #1
  92. Supply duct question
  93. High efficiency furnace exhaust
  94. ventless gas logs
  95. Tankless water heater used for radiant heat
  96. Need help
  97. Testing Heat/pump/AC
  98. Combustion air from attic
  99. inspecting humidistats
  100. What If Home Builders Had to Pay the Energy Bills?
  101. PVC Venting
  102. Furnace clearance from Dow styrofoam sheathing
  103. Common venting of Furnace & Water heater
  104. furnace and water connection
  105. Date code for GE air conditioner
  106. Flex hose used in fire box...Question
  107. I called this out.
  108. Return on pellet stove
  109. Line set under slab
  110. Crown boiler
  111. Multiple filters
  112. Main service panel acting as a service disconnect
  113. Asbestos Tape
  114. "Ask This Old House"
  115. Boiler Recall
  116. Do you pull service disconnects?
  117. U.S. Dept of Energy includes InterNACHI article in Building America Solution Center.
  118. Honeywell 8000 Thermostat Issues
  119. 3 Ways to Tell if That Contraption Is a Heat Pump or an AC
  120. Envenenamiento con Monóxido de Carbono y Cómo Detectarlo
  121. Damaged Electric Heat found by Knoxville TN home inspector
  122. WiseHeat Thoughts?
  123. 47 year old old steam boiler
  124. Age
  125. Heat pump/(a/c) unit identification
  126. hvac venting issue
  127. Drip legs
  128. First 10 to reply win Inspecting HVAC Systems book (hard copies).
  129. Heat Pump Testing
  130. Why use duct tape when...
  131. Furnace condensate drain terminates onto crawlspace floor.
  132. Necessary to note supply legs without dampers ?
  133. Boiler
  134. Pellet Stove vent
  135. Crown boiler recall
  136. Add on Chimney
  137. Oil tank in Crawlspace
  138. need age/size for Goettl HP
  139. International sales company furnace
  140. Dunkirk Boiler manufactured for Montgomery Ward
  141. Geo-thermal HVAC, do you inspect or not
  142. Age of Goodman AC
  143. Cracked heat exchanger?
  144. Would you comment on this
  145. Attic vent fan
  146. New online "How to Inspect Fireplaces, Stoves, and Chimneys" course for inspectors
  147. Duct work SNAFU
  148. Need help, age of GE furnace
  149. Furnace room ventilation
  150. Crawlspace Heating
  151. Cold air return attached to exterior vent
  152. Old Lennox
  153. The Hidden Dangers Lurking Within the HVAC System
  154. Vent Free Gas Log in Wood Fireplace
  155. Keeping ahead of the curve
  156. Checking Heat Pump in heating mode when its 80 degrees outside?
  157. Looking up of a A/C unit
  158. I did it again
  159. Pellet stove exhaust
  160. Exhaust air near heat pump
  161. Conductor and HVAC Breaker Compatibility
  162. Boiler age
  163. Unvented Crawl Space
  164. Chimney flue clearance to wall
  165. Air Return Vent
  166. Trinity Ti150 Troubleshoot
  167. Abandoned gas furnace in crawlspace
  168. New, Third Edition of Inspecting HVAC Systems book.
  169. Another mess
  170. Ventilation System Canadian Style
  171. What in your opinion
  172. HVAC UV devices
  173. Do you call this for repairs
  174. Open return (wet basemet) (toilet)
  175. Hvac height in garage
  176. direct vent furnace
  177. Don't assume???????
  178. Weil Mclain Cp lookup tool
  179. Fresh air intake question
  180. What do folks see wrong?
  181. 750 square foot condo...2 1/2 ton AC with 75,000 btu gas furnace
  182. Is this fan on a vent motor cracked or typical
  183. year of unit
  184. What is the tonnage of this Ruud .
  185. date this furnace
  186. Physical Damage - But keeping the house cool...Need advice
  187. Ductwork
  188. Poor cooling for new Puron AC unit or just the way some of them work?
  189. Inspecting Heat Pumps
  190. Breaker Size
  191. Low Freon or leakage
  192. Furnace intake not outside.
  193. Direct Vent pipe inside cold ait return
  194. Fire Block?
  195. Amp rating on AC unit.
  196. Old Rheem. AHU Inop. Did I...
  197. determining seer?
  198. Excessive Mildew Exterior of Plenum - 6 Year Old House
  199. 101 outside ambient
  200. Condensation on duct in crawlspace
  201. Poisiones gas escaping
  202. First time I've seen this...
  203. Intake air to furnace
  204. short of combustion air?
  205. Pellet burner as main heat source?
  206. What to do What to do
  207. Advanced HVAC video training for home inspctors on USB drive.
  208. Flex furnace vent connector
  209. Tuesdays brain twister
  210. Freshair supply for electric furnace
  211. Duct Connected to Chimney
  212. Thoughts
  213. bypassing a thermo stat
  214. Another use for secondary drain
  215. Propane tank clearance from overhead heating vent
  216. Hearth requirement pellet stove?
  217. Charley B or David A
  218. Old oil burner furnace abandoned in crawlspace
  219. Power vent + direct vent?
  220. Age of Fedders unit.
  221. Vent for floor heater
  222. Air Handler rating
  223. Gas Firplace fog
  224. Fujitsu Mini Split
  225. HVAC Question
  226. Carrier Size
  227. Gibson/Nordyne ?
  228. Haier Condenser Manufacture Date
  229. Plastic Gas pipe in furnace room
  230. Flue exhaust in chimney for furnace
  231. Is this right?
  232. Dating a Goodman
  233. furnace date for Air ease?
  234. Is a drip leg required on a gas line to the furnace or the water heater in Calif?
  235. Appliance Date
  236. Never had this...
  237. Exhaust/intake vent under a deck
  238. Did I break it? ...Heat pump
  239. Heat pump
  240. Thermostats that make a clicking noise
  241. Green Ductwork
  242. Condensate drain
  243. Blower assembly at termination of dryer duct...
  244. Dornback Furnace
  245. Sweating
  246. Which outside ac unit went where?
  247. Ac Date?
  248. Poor cooling, not very old outside unit evidently performed well
  249. Dampers in Heat Ducts
  250. Unusual Venting