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View Full Version : Heating & A/C Ducting Systems and Air Ventilation


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  1. Ceiling leak from dryer vent?
  2. Basement Finishing/Remodeling Question
  3. Ceiling vent register fitment issues
  4. which way is closed for duct carrier???
  5. Filter help
  6. Air Return too Close to Heat Vent?
  7. Duct Fan Install (HVAC problem)
  8. Cold Air Return Question
  9. Reducing trunk size after branching off?
  10. Reducing ductwork
  11. Venting Powder Room
  12. Newbie question about Duct Layout in Attic
  13. Is there a mold prevention product for humidifiers
  14. Dryer is venting right below outside air intake vent???
  15. vent, right above the furnace
  16. Sealing Rigid Ducts
  17. Cold air return in crawlspace?
  18. Water leaking down dryer duct
  19. 8 inch galvinized duct repair help
  20. venting a gas hot water heater
  21. uneven heat distribution on two floors-attic heater
  22. Ducts in a Bathroom
  23. Adding Ductwork to Old Basement
  24. HVAC and Mold Question
  25. Suggestions regarding an old forced-air system
  26. Best filter for old system
  27. Cold basement due to furnace vent from outside
  28. Re-route existing duct work
  29. thoughts on an idea
  30. anither dryer vent?
  31. How often should I be cleaning duct system?
  32. My pocket book really wants to use flex
  33. New forced air ducts in fairly new house
  34. Air Exchanger Troubleshooting
  35. dryer vent.?
  36. closing off vent
  37. Fixing Ductwork
  38. Redirecting heating register
  39. Retrofit Forced-air Heating/Cooling?
  40. 4" round dryer vent in 2x4" wall?
  41. Combine bathroom exhaust from 6 bathrooms?
  42. Combine Bathroom exhaust & Dryer vent?
  43. No air flow to half of house - HELP
  44. What to do??
  45. Replacing ducts in micro crawlspace?
  46. 53°F draft coming from return vent
  47. my furnace need to breath??help please
  48. Need help with In-Line Duct Fan
  49. Not sufficient heat in new addition
  50. Heat Pump Outside Operating Temp
  51. Can you convert return to a register?
  52. need advice on forced air heating system design
  53. New bathroom exhaust is much noisier than expected
  54. Basement Remodel
  55. dryer duct condensation
  56. Adding Two Cold Air Returns to Furnace
  57. No heat from air duct
  58. New vent in unfinished basement
  59. Over Coalstove Hood-Will This Work?
  60. Noise from heating duct in loft unit
  61. Can Honeywell EAF Prefilters be cleaned?
  62. Cold Air in few rooms
  63. Advice on adding new ducts
  64. Heat in Bathroom
  65. Attic retrofit for furnace
  66. plugged heating duct
  67. Allergy filters
  68. What CFM to use for duct calcs?
  69. Moving Register
  70. Trunk Size
  71. 2 x 12 register question - Ed?
  72. How I Add Return? Best Size?
  73. Bathroom Wall Fan Ducting Question
  74. Water dripping from duct vent
  75. Humidifier?? How To?
  76. Installing a Tee in an existing hot-air duct
  77. Condensation on AC ceiling vents
  78. Reverse Thermostat???
  79. heatpump hookup question
  80. Is air filter rack supposed to be airtight?
  81. Location of supply & return lines
  82. Blocking a cut hot air duct.
  83. What goes "clonk" in the dead of night?
  84. Could a hole in underfloor ductwork lead to damp exterior wall?
  85. where to tap? top , side or bottom?
  86. Return duct too small?
  87. installing duct/heatpump information needed
  88. zoning a system
  89. Bathroom exhaust duct questions????
  90. Dryer vent: Up or down??
  91. Tieing into exsting ducts in basement and placement of return vent
  92. heat in basement
  93. Glass block dryer vent help
  94. Bathroom returns
  95. Another dryer venting question
  96. tapping into upstairs wall return
  97. New Air Cleaner Needed, suggestions??
  98. Upstairs cold in winter hot in summer
  99. Fireplace smoke through heating duct
  100. ceiling basement fan
  101. best price on pleated filters?
  102. Filter replacement on improperly installed furnace?
  103. Alternative to bathroom exhaust fan?
  104. duct cleaning
  105. Cold air return sizing
  106. Sizing ducting??
  107. resizing ducts?
  108. Extending a cold air return
  109. Drilling a hole for duct work
  110. Purpose of vent near top of wall?????
  111. Bedroom with unequal temps
  112. deteriorated ducts under slab on grade
  113. Lack of heat through select registers
  114. Need info on putting floor registers on our main floor
  115. add basement vent
  116. Dryer vent 90 degree bends...
  117. Ion Air Purifier....Are they worth it?
  118. Extending register vents
  119. Basement finishing: Need a return! help?
  120. installing a register in a excisting duct in a basement.
  121. Bath Fan without exhaust vent??
  122. How Wire Heat Pump to H/Well Thermostat ?
  123. Help! Snow coming in combustion vents!
  124. New return in refinished basement
  125. Furnace Noise Question.
  126. small room doesn't get cool air, far from AH
  127. extending ductwork
  128. insulating metal ducts
  129. Cold room
  130. How is my thinking on this?
  131. Fiberglass Ductwork? Returns
  132. insulating square ducts
  133. bathroom vented to garage
  134. Duct behind wall noisy - any solution?
  135. locating ductwork
  136. EAC's vs Media Filters vs Tox Box
  137. Long-turn 90 for dryer venting
  138. Clarion UV furnace system
  139. Ventilation ideas for a below grade basement. Any recommendations?
  140. Add heat to second floor
  141. Return Duct Sizing
  142. Honeywell HVAC Zone Control Problems
  143. cold air pails
  144. Duct humidifer?
  145. Creative stove venting help
  146. Baement Remodel
  147. new all heat duct
  148. Curious Damper in main return duct.
  149. Phil - MO
  150. apartment return vent very drafty
  151. Ceiling Heat Vents/Ceiling Fans
  152. Rusty ducts is it a problem?
  153. Taping bathroom fan duct?
  154. Retrofitting a filter rack?
  155. Adding heat to second story bungalow
  156. temp difference in rooms
  157. exhaust only whole house ventilation
  158. what do these mean?
  159. Renovation, and cold air return
  160. Cleaning duct system
  161. which vents to put filters in?
  162. Remodel Removed Cold Air Returns
  163. Heat Recovery Ventilator problem
  164. Which foil tape to use with flex duct?
  165. wiring for a white-rogers sst1600 eac?
  166. One roof vent for two bathroom exhaust fans?
  167. Register layout (I'm cold in the corners!)
  168. Inadequate bathroom ventilation
  169. Cold air return under a cabinet
  170. Ductwork for toekick heating
  171. furnace exhaust duct
  172. duct calculator??
  173. Replace duct or not
  174. Trane CleanEffects vs. media type filters
  175. Replacing / Moving ductwork
  176. Attic duct/fan to circulate wood-stove heat.
  177. Window exhaust/rental house
  178. Forced air system vs remodel
  179. New Flex Duct Installed
  180. Maintenance question re: air ducts
  181. UV Lights and EAC's
  182. System airflow problems
  183. No Upstairs Air Return & have hot rooms
  184. wrapping insulated ducts?
  185. How to use 3 inch pvc duct for clothes dryer
  186. Can I draw cold air from basement for cooling???
  187. moving ductwork & adding basement floor returns
  188. Duct from outside into air return
  189. New Ductwork or not?
  190. Outsidde (stinky crawlspace) air coming in
  191. Automatic foundation vents
  192. Need Help w/ System Design
  193. replace old duct work cause it's dirty??
  194. Moving air return
  195. cold air coming out of return
  196. How to temporarily ventilate basement.
  197. evaporative system duct layout
  198. Sofit vent for a bathroom exaust fan?
  199. Silver vs Black flex duct
  200. ducting for range hood
  201. moving a duct in a low-ceiling basement
  202. Where to tap plenum for bypass duct
  203. Anyone know what an air test is?
  204. patching a hole in a furnace duct
  205. Clicking noise from...
  206. how to vent furnace thru roof.
  207. Attic Ventillation - Illinois
  208. Range hood vent duct work
  209. extending roof for soffits
  210. Can I tap into an existing return?
  211. Path of least resistance to far away room
  212. Repair of Furnace Ducts
  213. dismantling ductwork - need advice
  214. Heating Half Basement
  215. Does size of return vent matter?
  216. bsmnt ductwork sizing
  217. thin duct?
  218. Increasing Air Flow
  219. crawl space vents - open or closed?
  220. Dryer vents through foundation/brick wall?
  221. No Air return in basement?
  222. Soffit clearance below outgoing heating ductwork
  223. whole House Fan - tips to quiet?
  224. zoned system question
  225. Register sizing?
  226. Dryer Venting ??
  227. First time poster needs info on bsmnt ducts
  228. OK to add heat run to end of duct?
  229. Need advice for bathroom exhaust fan upgrade.
  230. through the wall exhaust fan
  231. Replacing a wall duct vent to a floor vent
  232. Condensation on Duct work in basement
  233. Changing duct sizes
  234. Help! (Modifications to duct work)
  235. Parts Identification
  236. How to install dryer vent and brick
  237. How can we tell if there is insulation?
  238. Where to buy ductboard?
  239. whole house fan
  240. Bathroom Vent Duckwork
  241. Range Hood Ducting Question (yes another one)
  242. New Return Vent in Bedroom
  243. added ductwork
  244. Adding Air Vents in Basement
  245. Basement Bathroom Fan
  246. new ductwork and flipping furnace
  247. New exhaust fan - bath
  248. water leaking from air handler
  249. Sticking bathroom fan advice?
  250. Hiel High Efficency 5000