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