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Found 62 results for the keyword ‘Duct’

  • Problems with two apartments sharing one heating source

    When two apartments share the same heat source and only have one thermometer, someone is always unhappy. If the thermostat is upstairs, the downstairs people are too cold, and if the thermostat is downstairs, the upsatirs people have to open the windows, to keep from getting cooked although thos...
  • Should I get my ducts cleaned?

    Josie asks: "I am considering getting my ducts professionally cleaned. Can you tell me if it will reduce the dust in my home and whether there are any other benefits to having this done?"This question comes back every year, and although there is still hot debate on the subject, it appears to me ...
  • Sealing ductwork in an attic

    Often furnace heating and air conditioning duct work is run though an attic and then back down into the house. Personally I think that this is a really bad idea unless there is absolutely no alternative route. Why? First, most duct work is not sealed where it goes through the ceiling, so a lot...
  • WHAT ARE THE RULES FOR APPLYING INSULATION IN THE ATTIC?

    -- Take care of air barriers, ventilation and vapour barriers before insulating. Check out these three topics in the Search Tab above.-- Don't block the eave vents with insulation.-- Do cover the top of the outside wall.-- Don't put plastic foam on top of porous insulations (batts, loose fill) a...
  • Overview: Attic Moisture

    Ventilation in a Canadian attic does very little to remove moisture when the temperature in the attic is below freezing. During that time, the moisture is in the form of Ice and the passing air simply won't remove it -- whether you have passive vents or power vents. When things warm up, if the ...
  • Just how do you install a central vac through old walls?

    Most portable vacuum cleaners have fairly poor filters. Sure most of the real "dirt" gets caught in the bag, but much of the very fine stuff just blows out the back end. A central vac has the same problem, but because it is placed in one place, it can have a much stronger motor to allow it to d...
  • HRV - both supply and exhaust ducted to furnace. Is this a good idea?

    I have occasionally been asked my opinion about a particular way to install a ventilation system (HRV - Heat Recovery Ventilator) that is considered acceptable in Ontario: Ducting both the supply and the exhaust runs of an HRV into the return air plenum of a forced air furnace. To understand t...
  • Radiant Heating Systems for Homes

    Radiant Heating and Convection Heating are the two primary types of ways we heat our houses. FORCED AIR HEATINGConvection heating means moving hot air -- what we usually call a forced air heating system simply heats air and moves it around the house through a system of fans and ducts.  Forced air...
  • Overview: To HRV-ERV or not to HRV-ERV

    I am always amazed at house construction where so often things are half built or more while people are running around beginning to think about "extras" that should never be though of as "extras" but as part of the essential system. So time for one of my lectures -- (you asked for it).Heating is o...
  • UV lamp for a furnace

    Few furnace filters, except expensive HEPA filters, do much about trapping or killing germs. Electronic air filters will reduce somewhat the air born germ count because the high electrical voltages do kill some of the bacteria passing through them and probably all that is caught on the plates. ...