Your HVAC system is an integral part of your home. At Strouse Home Inspections, we know this. That is why when you call upon us to perform a home inspection, your HVAC system is on the list of items we thoroughly check.
The following are the steps that should be followed when inspecting an HVAC system:
Check to make sure there is a shut off valve installed on the supply line. Separate valves should be in place for hot and cold water, as well as gas lines if present. Shutoff valves may appear different depending on whether they control hot water, cold water or gas. If a shut-off is not present, it may be accessible through the attic via insulation with an access panel.
Make sure that there are no leaks coming from pipes or connections to ground and/or lower plumbing fixtures (i.e., toilets). These leaks can indicate frozen pipes in wintertime.
Check for any signs that the furnace is leaking gas. This could include burnt or sooty marks on nearby surfaces, as well as a strong odor of natural gas in the area. You may also be able to hear hissing sounds from venting pipes and vents. If you notice these problems, it is important that an HVAC professional be called immediately.
Check for any signs of water damage on the unit itself, which could indicate a leaky seal or gasket. You will want to look at both the inside and outside as well as examine all accessible connections. A wet spot around an outdoor vent may also show that it needs service.
Check the outdoor unit to make sure it is not sitting on dirt. If there is a concrete pad or patio, you may see signs of water damage and rust in these areas as well; this is an indication that moisture has been present for some time.
Try turning up the thermostat to full power and listen for any noises from the unit. You will want to listen at any vents and registers as well, as you could hear rattling sounds which are an indication of a clogged line or filter.
Check for signs that insulation has been removed around pipes and connections. This is often done in order to make repairs but should not be happening if the lines are still in good working condition. Make sure that any insulation is securely back in place before calling an HVAC contractor to make repairs on other issues.
By Strouse Home Inspections 7-14-2021