Nashua, NH, experiences some extreme temperatures during the winter. The average snowfall in this part of the country ranges from 50 to 55 inches each year. To protect your home from ice and snow buildup, it’s essential to seal air leaks and install gutter guards. It’s equally important to protect any outdoor HVAC units from ice and snow buildup. If you don’t, you’ll notice higher energy expenses and costly repairs. Fortunately, there are several ways to protect the outdoor units from ice and snow. For now, let’s explore how ice and snow affect outdoor units. We’ll also cover how to remove ice and snow and prevent their buildup in the first place.
Blocked Airflow
When snow and ice accumulate on an outside HVAC unit, it limits the airflow. Reduced heating and cooling efficiency is a direct result of airflow obstructions because they impede the heat exchange process. This type of overloading of the system not only reduces its energy efficiency but also increases the risk of overheating and other problems. To keep the airflow at its best, it is essential to remove ice and snow as soon as they accumulate.
Icing on Coils
The accumulation of snow and ice on an outside HVAC unit can cause coil icing. When this happens, it hinders the system’s ability to absorb and release heat efficiently. Because of this inefficiency, the HVAC system’s performance drops and energy usage goes up.
Overworking the Compressor
Snow and ice buildup cause the HVAC unit’s compressor, which is responsible for circulating refrigerant and enabling heat exchange, to work harder. Compressor damage decreased efficiency and higher energy consumption are all possible outcomes of this overworking.
Frozen Condensate Lines
The accumulation of snow and ice on an outside HVAC unit may cause condensate lines to freeze in cold weather. Water damage may occur if these lines freeze because it prevents condensate from draining properly. Frozen lines also reduce the efficiency of the HVAC system since they get in the way of its regular operation. If refrigerant can’t move through these lines as designed, it not only results in less indoor comfort but also puts your HVAC system in harm’s way. The system will continue to run without any way to effectively heat the air that comes into your home, resulting in more wear and tear.
Damage to Other Components
Over time, the accumulation of ice and snow on an outdoor HVAC unit may put unnecessary strain on its components, perhaps leading to their failure. Because of the increased mass, the housing, fan blades, and other critical components are at risk of physical damage. If not addressed, this vulnerable condition might cause the system to become less efficient and eventually break down.
Removing the Ice and Snow
The key to keeping an outside HVAC unit running well all winter is keeping it clear of ice and snow. For the safe removal of snow and ice from the unit, use the following tips.
Soft Broom or Brush
A gentle but efficient way to clear the HVAC unit of loose snow is to use a soft broom or brush. This method helps keep the unit’s fins and coils in good condition and is ideal for light snowfall. When thoroughly removing the snow, be careful not to damage any delicate parts in the process. Using this strategy, you can control light snowfall before it freezes.
De-Icing Solutions
There are several de-icing methods to melt ice on an HVAC unit. However, due to potential risks, it’s imperative to exercise caution and consider professional assistance. One solution involves combining isopropyl alcohol with water. When applied carefully, this solution aids in protecting the HVAC components from harm. Remember to use a greater percentage of alcohol and not apply too much. For a gentler de-icing treatment, use white vinegar and water in equal proportions. The acidity of vinegar helps melt ice, but you must be careful that the solution doesn’t corrode the parts of the HVAC system.
Another way to melt ice around the HVAC unit’s base is by placing pellets of calcium chloride around it. Dissolving these pellets releases heat, which helps melt the ice. Be very careful not to touch any sensitive components when using this procedure. Lastly, it’s possible to melt ice by using a combination of propylene glycol and water. Propylene glycol is useful for melting ice since it has a lower freezing point than water. However, to prevent any damage to the HVAC unit, it is essential to apply the right concentration.
Ice and Snow Buildup Prevention
With the right approach, it’s fairly simple to protect outdoor HVAC units from snow and ice. For unique strategies that apply specifically to your home, make sure to consult a professional.
Heat Tape or Blankets
One way to prevent ice and snow from building up on your HVAC unit is to use outdoor-specific heat tape or blankets. By precisely heating essential parts, these solutions prevent ice dams from forming and keep systems running smoothly. Depending on the ambient temperature, heat tape, a kind of self-regulating electric wire, modifies its heat output accordingly. You can even put it in a strategic spot on the unit’s surfaces where ice tends to form. Similarly, heat blankets made for use outside provide an extra degree of protection from the cold. Wrapping the HVAC unit with a specially designed blanket will keep it warm even in the worst weather.
Enclosure or Shelter
Another efficient way to protect your outside HVAC unit from snow and ice is to build a shelter or enclosure around it. This weatherproof enclosure keeps the device cool by keeping out the elements and allowing air to circulate. Make sure the enclosure fits the unit’s dimensions and provides simple access for repairs and maintenance when you create it. Insulation against severe weather reduces the chance of ice and snow buildup, and a well-designed shelter offers just that. It prevents the unit from coming into direct contact with outside forces by acting as a barrier.
Adjust Landscaping
Careful landscaping adjustments may be necessary to prevent snow and ice from building up on outdoor HVAC systems. Put up short fences or plant shrubs around the unit to block the wind and snow from blowing inside. Another way to reduce the amount of snow and ice that accumulates on the unit is to install eaves or overhangs on the roof. A little elevation of the unit above ground level might lessen the chance of snow accumulation around the base. But ensure that the areas around them have good drainage to prevent puddles that might freeze and contribute to ice buildup.
Many types of HVAC systems have outdoor units. Some of the most popular types include heat pump systems, packaged air conditioners, mini-split systems and variable refrigerant flow systems. If you need help with ice and snow removal, call Joyce Cooling & Heating Inc.. We also help Nashua homeowners with water heating installations and maintenance, high-velocity HVAC services and much more. Call us now to make an appointment for ice and snow removal.
