High-efficiency gas furnace installed where previously there was mid-efficiency. So it vents straight out the wall while the old furnace used the chimney. The vent is right next to the sandbox. How bad is this? [more inside]
posted on Apr 26, 2008 - 5 answers

My forced hot air system has no return ducts. Instead, cool air falls directly into the basement, where there's a filtered intake on the side of the furnace. Are my life, health, and or selling prospects at severe risk? [more inside]
posted on Sep 20, 2007 - 9 answers

What form of energy is used to heat a Wal-Mart, Home Depot or Costo store, and how much does it cost per month in the winter? [more inside]
posted on Apr 8, 2007 - 12 answers

Not-My-Walls-To-Cut-Through-Filter: Anyone have experience running Cat5 through HVAC ducts? [more inside]
posted on Jan 14, 2007 - 15 answers

BrrrrrFilter: It's gotten cold here in Chicago and my heater appears to be broken. Google didn't help me much probably because my knowledge of HVAC is weak. Help me find out quickly if I'm being ripped off? [more inside]
posted on Oct 13, 2006 - 15 answers

What can we do to get more air from the air conditioning (and the heat in the winter) to the back of the house? [more inside]
posted on Jul 29, 2006 - 17 answers

8 unit condo in Jersey City needs an energy (HVAC, heating) consultant to look at our boiler and heating system and advise us on how to lower our heating bills. We are keen to consider green options but economy is the main criterion. Thank you for your recommendations and advice. [more inside]
posted on Jul 20, 2006 - 1 answers

Which direction should I point the louvres from my heating/ac vents?
posted on Feb 8, 2004 - 5 answers