This thermostat is in a brand new construction home and was working when I tested it at the beginning of the interior portion of the isnpection. At some point, however, I heard the HVAC switch off and when I checked the thermostat, it had gone completely blank and did not respond to any touch commands. I headed to the attic to investgate. The furnace switch was tested and the air handler fan started, however, the heating elements did not light. Since the thermostat had stopped sending signals to the furnace, it was no longer heating the home. This is another example of why home inspections even on brand new homes are so important because this may not have been discovered until the buyer moved in - and having to deal with a headache like this on moving day is not fun!
The crawl space is one of the most crucial areas a home inspector should inspect. This particular opening isn't exactly large, but trust us, our inspector Rick has gotten into MUCH smaller spaces (attic openings are especially fun!). A home's crawl space often contains HVAC components, exposed plumbing pipes, insulation, and vapor barriers and/or other encapsulation materials. All of these items should be carefully inspected to ensure they are functioning as intended. Signs of trouble can also be spotted in the foundation and in crawl spaces that are wet and musty - dry is what he's looking for!
Image courtesy of Trevor Holman Photography
HVAC TIP: Check to make sure there are no gaps! Gaps in the metal exterior duct that leads from the HVAC to the home lets heat escape and lets water in. It can also contaminate the air supply with undesirable fungal growth (think mold). The metal box should be flush and sealed to the home to prevent these serious issues from occurring.
From Rick & Lori:
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