Know How to Protect Your HVAC Unit from Major Storms

The combination of storms and HVAC units can mean interruptions in heating or cooling as well as costly repairs. While the outdoor units of a central AC or heat pump are designed to resist normal weather, when conditions get really extreme, damage can occur. Even certain indoor components like the thermostat can take a hit due to storm-related phenomena.

Storms and HVAC components combine to cause damage in two basic categories:

• Outdoor components of the central air conditioner or heat pump may incur damage from flooding during severe storms, heavy snow accumulation, or falling ice and broken limbs impacting the units.
• Severe storms often trigger power surges on the grid that may damage sensitive HVAC electrical components — particularly the system thermostat.

While there’s not much you can really do about the daily forecast, here are a few preventive tips to avert possible damage when storms and HVAC converge:

• Before seasonal weather changes strike, it’s a good idea to identify and cut back overhanging limbs which might break and impact outdoor HVAC components during high winds or a severe ice storm.
• In heavy rain, flooding can swamp outdoor units. While these components are water-resistant, they are not designed to be submerged for extended periods. To safeguard against inundation, make sure ground surrounding the outdoor AC or heat pump is graded to channel pooling water away from the unit during heavy rain.
• Clogged gutters can overflow in rain. A heavy cascade drenching an outdoor HVAC unit directly below the gutter can cause water-related damage. Gutters should be cleaned out at least twice a year to remove leaves and debris.
• Consider purchasing commercially available covers for outdoor HVAC components for added storm protection. However, the AC or heat pump should never be operated while a cover is in place.
• Severe storms may trigger damaging voltage surges. To protect sensitive indoor electronics like the system thermostat, consider having a whole-house surge protector installed at the main electrical panel.

To reduce potential damage when storms and HVAC units get together, ask the professionals at Energy 1 Heating & Air Conditioning.