Quote:
Originally Posted by zstroken
I would think your utilities will be quite high with that setup, as you are always using fresh make up air. Of course sharing a common wall between the garage and house might more than offset the increased utilities.
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Commercially we try to keep our buildings 0.01"-0.02" positive.
More and more residential HVAC systems bring in and condition outside air to positively pressurize the house. Makes for a cleaner space and prevents 'sick houses'. A 5-ton residential unit is generally between 1800-2000cfm and 10% would be slated for outside air.
If you think about it, many houses are actually negative a lot of the time, dryers blowing exhaust outside, exhaust fans for bathrooms, vent a hoods, etc... The air is sucked in through door and window seals etc... Much better to pull it in through the HVAC system, filtered and conditioned.
Yes small utility impact, but a better system overall. And could help with the shop fume/dust infiltration problem!