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