VENTILATION, AIR CONDITIONING & HEATING SYSTEM
We inspect the heating systems using normal operating controls.
We describe the location of thermostats, energy source and any heating system that did not operate.
A building’s central air-conditioning system must be periodically inspected and maintained in order to function properly. While an annual inspection performed by a trained professional is recommended, homeowners can do a lot of the work themselves by following the tips offered in this guide.
Clean the Exterior Condenser Unit and Components
•Remove any leaves, spider webs and other debris from the unit’s exterior. Trim foliage back several feet from the unit to ensure proper air flow.
•Remove the cover grille to clean any debris from the unit’s interior. A garden hose can be helpful for this task.
•Straighten any bent fins with a tool called a fin comb.
•Add lubricating oil to the motor.
•Clean the evaporator coil and condenser coil at least once a year. When they collect dirt, they may not function properly.
We describe the cooling system using normal operating controls.
The location of the thermostat, the cooling system and cooling method.
The exterior condenser unit is the large box located on the side of the building that is designed to push heat from the inside of the building to the outdoors.
Recommendation for home owner:
•Inspect the drain line for obstructions, such as algae and debris. If the line becomes blocked, water will back up into the drain pan and overflow, potentially causing a safety hazard or water damage to your home.
•Make sure the hoses are secured and fit properly.
•Have the air-conditioning system inspected by a professional each year before the start of the cooling season.
Duct Systems, Chases & Vents
We inspect the duct material and installation, chases and supply vents.
HVAC distribution system should be designed with adequate supply and return registers that provide conditioned air to all parts of the house and return stale air to the furnace for reconditioning. Inadequate return air pathways can cause pressure imbalances from room to room, which can create drafts and temperature differences between rooms or floors, leading to complaints about comfort. Pressure imbalances can also cause the furnace and air-conditioning equipment to work harder than necessary.
A well-designed return air strategy is critical for the performance of the HVAC system in an energy-efficient house, which may have lower airflow requirements to meet the lower heating and cooling loads. The return air must have a clear path back to the air handler from every room that has a supply outlet, with the exception of bathrooms or kitchens due to the potential for spreading odors through the house.
Leaky ducts can dump conditioned air into attics and crawlspaces, or pull in air from these same types of spaces. Both outcomes waste energy and reduce the amount of heated or cooled air that reaches its destination, and can cause other problems with odors and contaminants. To help get air where it is needed, at the correct temperature and without contaminants from the crawlspace or attic, check the air sealing at the HVAC cabinet and duct seams.
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