4 Signs Your HVAC System is Undersized
An undersized HVAC system may not always be apparent from the onset. It could be caused by various factors, such as a lack of proper insulation, leaky ducts, or changes to the building, such as adding rooms or extensions. A qualified HVAC professional will be able to conduct a load calculation to determine the appropriate size for your HVAC system, taking into account factors such as the square footage of your home, local climate, and energy efficiency. Below, we look at four signs that your HVAC system is undersized.
How to Understand Your HVAC Unit SizeHVAC unit size refers to the unit’s heating and cooling capacity, typically measured in British Thermal Units (BTUs) for heating or in tons for cooling. The size of the HVAC unit is determined by a load calculation, which takes into account factors such as the square footage of the space, the number of windows, the type of insulation, and the local climate. An HVAC size calculator determines the amount of heat gain or loss in a building. It takes into account factors such as the size and layout of the building, the number of windows, the type of insulation, and the local climate. Once the load calculation is done, the HVAC contractor will be able to determine the appropriate size of the HVAC unit that’s needed to heat and cool the space effectively.
4 Ways to Tell if Your HVAC System is Undersized
1. Short CyclingShort cycling refers to when an HVAC (heating, ventilation, and air conditioning) system turns on and off frequently without fully completing a heating or cooling cycle. It happens when the thermostat calls for the HVAC system to turn on, but the system doesn’t run long enough to reach the desired temperature before turning it off again Short cycling can have several negative consequences, such as:
Reduced energy efficiency:When the HVAC system is short cycling, it is running less efficiently and consuming more energy than it would if it were running for longer cycles.
Reduced comfort:When the HVAC system is short cycling, it is not able to effectively heat or cool the space, leading to uneven temperature control and discomfort.
Increased wear and tear:Short cycling puts additional stress on the HVAC system, leading to increased wear and tear on the equipment and potentially shortening its lifespan.
Reduced air quality:If the HVAC system includes an air cleaner, it may not have enough time to filter the air during short cycles.
2. Inability to Reach Desired TemperatureAn undersized HVAC system may struggle to heat or cool space to the desired temperature, leading to uneven or inadequate temperature control. There are a number of reasons why an HVAC system may not be able to reach the desired temperature:
- Insufficient capacity
- Clogged air filter
- Faulty thermostat
- Leaky ducts.
- Refrigerant leaks
- Dirty coils or condenser
- Incorrectly set thermostat