View Full Version : HVAC Heating & Cooling

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  1. Flue Insulation?
  2. Draining Heating System to Remove Radiator
  3. Carrier identification
  4. Honeywell RTH7000 Thermostat
  5. Where to add bleed valve?
  6. Furnace will not start or stop running reliably
  7. Adding combustion air
  8. Jumping Door Switch
  9. No Heat on Most of Top Floor Zone
  10. floor vent air temps
  11. Blocked valve
  12. safety question - keep pushing the auxillary switch and turning off electricity
  13. Can I use a 37 flare tool for a 45 fitting?
  14. Furnace question
  15. A/C unit in FLA.
  16. Nuheat mats installation query
  17. not sure where to post it
  18. Bathroom Exhaust Fan
  19. Mitsubishi Mr. Slim opinions
  20. Should flue be completely sealed up through the roof?
  21. Boiler not firing up for 2nd zone, only 1st zone
  22. One thermostat for room with two zones
  23. AC Refrigerant lines: Braze or Solder?
  24. Hot Water System Dilema
  25. cold air return sharp corners?
  26. Wall Furnace Mystery
  27. Price of NG vs Elec Heat
  28. Is it my thermostat?
  29. Possible Water in Oil Tank
  30. Mastercool
  31. Convert dryer vent to range hood vent?
  32. Question About Expansion Tank
  33. Beckett Blues
  34. stovepipe roof leak
  35. Gnats in heating vents.......whats a girl to do?
  36. Furnace sizing and duct work
  37. PEX Pipe Snakes in Basement
  38. Natural gas piping question
  39. Cold air return? or not?
  40. What is the purpose of the Controller?
  41. heating a garage loft
  42. DIY HVAC Equip. Where?
  43. Aquatherm Hotwater Heat System.
  44. Please help!! CO leak in the system . Can't find it.
  45. Over Under Radiant Heat?
  46. Propane furnace pilot wont stay lit
  47. Vandalized & Beaten AC Compressor - Has anyone seen this before?
  48. HRV/ERV systems
  49. How do I use a gas pressure tester?
  50. York Indoor Air Blower
  51. resize with haier furnace for whole house or ...
  52. What baseboard sould I get?
  53. Need advice fixing PEX install
  54. Fan Speed
  55. Thermostat transformer
  56. closed loop hot water
  57. Hi all
  58. pressure and hydronic radiant heat
  59. radiant heat in the walls?
  60. How do I wire multiple zone relays ...
  61. Right Filter for a Lennox 26-21-1 Furnace?
  62. how tight to tighten a 1in union
  63. Negative air pressure?
  64. insulation
  65. Old Radiators vs new baseboard
  66. Loud sucking noise from inside intake
  67. Decommissioning a flue
  68. Furnace cycles while heating the home
  69. Gas Furnace Fan Trips Breaker
  70. Motorized Damper/Thermostat question
  71. Malfunctioning York Gas Furnace?
  72. Lowering thermostat , how much and closing vents
  73. tjernlund ss1 suddenly very loud
  74. Heat Pumps/Well Pump Problem
  75. Insulating radiant floor installation with exposed beams
  76. water boiler temperature settings and circulator
  77. keep haveing to hand start oil furnance
  78. Set Back Thermostat
  79. Forced hot air furnace too hot up - toocold down.
  80. Slight gas odor from Lennox furnace
  81. Air handler in closet
  82. visionproiaq and humidifier
  83. HD Slant/Fin
  84. Thermostat wiring question
  85. Boiler Heat System shuts off....
  86. fault code for a centurion heating system
  87. Wireing to central unit?
  88. what's up with the flow
  89. Oil Furnace Roar Comes In and Out
  90. air locked radiator
  91. efficiency in this application
  92. Radiator hissing noise
  93. furnace-no ignition
  94. trane heat pump
  95. Condensation lines
  96. Could not find this answer here.
  97. Boiler still shuts off
  98. thermostat--wiring
  99. Gas furnace seems to "overheat"
  100. Adjusting fan speed on direct drive blower
  101. hartell condensate pump
  102. running a high ef. furnace at a low temp.
  103. Wall radiator valve problem
  104. Install Upstairs Radiators, do I need valves?
  105. Air Return Duct
  106. Picking the right cast iron radiator
  107. Extending Refrigerant Lines
  108. Lennox furnace burner box not 100% sealed
  109. Help with hydronic radiant heat
  110. Converting Watts to BTU's
  111. Honeywell R8182d Aquastat
  112. HVAC School
  113. Heat pump efficiency?
  114. packaged heat cool unit costs?
  115. Hot water circulator question.
  116. In-Floor heating
  117. Help diagnose rumbling oil furnace?
  118. trane heat pump
  119. Column Radiators and Baseboard radiators
  120. furnace dying?
  121. honeywell L8148E aquastat replacement
  122. Humidifier Bypass
  123. Outside heat pump not running at all
  124. Central Humidifier and no Ducts
  125. Carrier 58RAV Error 12 "blower on after start up"
  126. Replacement of a hot water iron pipe monoflow to pex or smaller copper
  127. Booster fan
  128. HVAC question
  129. New High Efficiency furnace
  130. Cold Air Return....
  131. Sizing Furnace B-Vent
  132. Cool air blowing from return vent
  133. furnace not keeping up
  134. Furnace Troubleshooting Help
  135. how to refill and hot water system
  136. 10th China International Heating, Ventilation and Air-conditioning Expo (CIHE & HVAC
  137. HERS Test required when replacing furnace?
  138. Heat not working
  139. Return on an outside wall! Keep it, or shut it off and insulate the bay? Help?
  140. hydronic radiant heating, wall area needed per sq.ft of floor space.
  141. Steam heat and pressuretrol switch
  142. Heat pump cold weather operation
  143. will this for radiant heating
  144. noisy return air duct
  145. 1984 A/C replacement
  146. Heater not turning off
  147. Drain for Bypass Humidifier
  148. Fireplace backdraft
  149. Rti heat pex
  150. Manual lighting gas boiler
  151. erratic smoke alarms and heat pump connection?
  152. Heatpump question - split system vs single
  153. Using springwater for heatpump source
  154. 1 Boiler for Both Radiant Heat and Hot Water Possible?
  155. Broan DH100W Dehumidistat contol
  156. No heat/air movement anymore in one room, 'tinking' noise repeating
  157. Maytag Gas Condensing Furnace
  158. Outrageous furnace repair charges
  159. Furnace click on and off noise from basement to upstairs through ductwork
  160. Emergency Heat vs heat pump in very cold weather
  161. Wall Furnace: Pilot does not stay lit
  162. Is furnace "circuit portection device" needed?
  163. Humidifer wiring causes sheet metal click noise - is it solinoid?
  164. Cold air blows in with the heat through vents...
  165. hot water in zone when T-Stat not calling
  166. Converting a manual switch heating zone to a thermostat heating zone
  167. Changing boiler water pump.
  168. Help needed about attic fan!!
  169. Heil furnace blowing fuse on board
  170. Dryer venting question
  171. Vent needed on condensate drain?
  172. HVAC Trunk Sizing
  173. flexible duct installation
  174. Rain in boiler vent
  175. Furnace/boiler (and HWH) PLACEMENT
  176. Want to moonshine some R-22?
  177. what BTU size in this case
  178. Basement humidity in New Jersey
  179. Hooking up two bathroom fans to one vent
  180. supply temp ver: return temp
  181. Blower motor not kicking on???
  182. Return Air Venting Question
  183. mini split heat/cool system
  184. Plenum Supply Mathematics: Volume vs Area
  185. Heat Pumps MORE Efficient to run that hot water loops ?
  186. Whole house (attic) fan. Need one w/ heavy insulation doors?
  187. HVAC ductwork to basement
  188. HVAC test
  189. Can Monoflow tees lie flat to floor joist or hang below
  190. changing heat only tstat to heat and cool tstat
  191. The 11th China International Heating, Ventilation & Air-conditioning Expo
  192. Has anyone ever used the speedi-boot vent system?
  193. Pilot Question on Empire Vented Gas Heater
  194. Transformer
  195. Splitting trunk duct into two thinner ducts?
  196. Putting a T connection at the natural gas line
  197. Bryant Evolution Question
  198. In-slab Radiant heat??? what can I cover it with?
  199. HVAC 2nd Floor reversed intake duct ?
  200. Humidifier install question
  201. Auto A/C Question
  202. Helppp..Heat Exchanger quagmire
  203. some say this others say that
  204. Bathroom Fan
  205. Aprilaire 1710A Stand Alone Dehumidifier
  206. Advanced thermostat - is this feature available?
  207. Oil Boiler, Hot Water/Radiator Problem
  208. I need help cleaning the hot water coil in my oil fired furnace.
  209. Contactor replacement
  210. Condensate Backflow
  211. Tell me about York furnace!
  212. What can I do with this heater?
  213. GE 5KC39BG condenser motor replacement?
  214. Can I replace an old Friedrich wall AC unit with a new Frigidaire wall unit?
  215. Replace White-Rodgers IF92 Tstat with new Honeywell VisionPro
  216. smell coming from central air system
  217. ductless ac help
  218. Sizing a wall air conditioner for a split-level house
  219. Hydronic Air PEX Piping Deteriorating - Repipe or Install New Heating System?
  220. condensate on air ducts - normal?
  221. basement heating/cooling question
  222. Another Bryant Evolution Question
  223. Which heating system is best for my use?
  224. Return Air
  225. Measuring/confirming new AC/minisplit is up to duty
  226. Advice for disgruntled employee!!!!
  227. can I add a zone like this?
  228. Calculation for heat supply to a given area
  229. Any HVAC contractors onboard.....
  230. Is a spare fan a good plan?
  231. Trane vs Day & Night 3 ton air/heating unit
  232. What are the major benefits of insulating the refridgerant pipes
  233. Can bad heat pump capacitors cause power consumption to double?
  234. Lennox / Copeland AC Compressor
  235. 4-inch heat duct worth the effort?
  236. Goodman Model GU100-3 S/N 860602118
  237. PVC Pipe Connected To Metal Drip Pan is Leaking
  238. Trane XB14 and XR80
  239. Splitting a 12" trunk flexible duct...please help!!
  240. Split heat pump comparisons
  241. Closing off central air return
  242. Hercules Base Hit II V Hercules Bolier Fluid
  243. Installing Dampers in Existing Ductwork
  244. Flexible copper in hydronic heating systems
  245. Multiple triggers for HVAC fan?
  246. turn furnace into a fan for summer?!?
  247. Can I run a dryer vent against a basement foundation wall?
  248. Want to add another A/C duct to existing system.
  249. Dry 22 units
  250. Ducane vent termination