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5 Levels of Oil Management with Toshiba-Carrier VRF

Did You Know Our Toshiba-Carrier VRF Product Essentially Has 5 Means of Oil Management?


Compressor Design

1. Compressor design; rotary compressors being high side shell dome meaning that the mechanical components of compression are at the bottom of the compressor where the low pressure / low temperature gas enters the compressor shell. The high pressure / high temperature gas is at the top of the compressor shell. This keeps the mechanical components down where the oil is, this also reduces the amount of oil leaving the compressor. Read more

Ductless VRF Provides an Energy Efficient Solution for Virginia Middle School

Case Study: Richmond County Middle School

Richmond County Middle School is a historic educational facility in Warsaw, Virginia. Originally built in the early 1900’s, it was converted into the school it is today in the 80’s. Since then, very little has been done to the building and its mechanical systems. They were still using inefficient radiant heat and PTAC cooling units, until an upgrade was no longer deemed optional. Read more

identify water damage in hvac

How to Identify Water Damage to HVAC Equipment

After a hurricane or flood hits, it is time to begin the damage evaluation process. One of the most difficult items to assess—for both insurance adjusters and homeowners—is the HVAC equipment. It is challenging to determine just how severe the water damage is from the outside, and since the equipment is so expensive, claims should not be made haphazardly. Here are the steps to follow to determine how severe the water damage is to the HVAC equipment, even if it can’t be turned on.

Inspect the Outdoor HVAC Equipment

The outdoor condensing unit is the obvious first stop when evaluating water damage. While outdoor HVAC equipment is built to withstand the elements, that doesn’t mean it can survive a hurricane intact. Floodwater is full of mud and debris, and it will often move at rapid speeds. To assess the damage, the following steps should be followed:

  • Inspect the condenser coil fins for any debris or dirt that is stuck on them. The location where the debris stops usually indicates how high the floodwaters reached within the unit. Knowing how high the water was is key to understanding how much damage was sustained.
  • Look over the back panel of the HVAC equipment, as well as the electrical compartment or adjacent wall to help determine what the water level was.
  • Once it is known how high the water level was, it will be clear which components may be permanently damaged from the water exposure, such as the fan motor, compressor, or electrical compartment.
  • Check the condensing unit to see if it moved at all on the pad. If it did, the copper lines should be inspected for any kinks or breaks. If these are broken, there is a chance that contaminants were able to get into the refrigerant loop, which could potentially ruin the compressor or other parts within the HVAC equipment.

Inspect the Indoor HVAC Equipment

The risk of damage to the indoor HVAC equipment depends a lot on the type of equipment and its location. If the HVAC equipment is on the second floor, there is a good chance it was unscathed. However, if it was on a lower floor, it definitely needs a thorough inspection.

Use the same tips suggested for the outdoor unit on the indoor unit (like looking for debris and inspecting the surrounding areas for signs of the water level). If the unit is horizontal, any amount of water that reaches the HVAC equipment will likely cause significant damage. However, if the HVAC equipment is vertical, major repairs probably won’t be necessary unless the water reaches the burner compartment (which is several inches above the ground).

Once it is determined how high the water levels rose during a hurricane or flood, it will be easier to assess how much of the HVAC equipment needs to be repaired or replaced.

prevent hvac damage during hurricane

6 Tips to Prevent Damage to HVAC Systems During a Hurricane

Hurricanes are one of the most destructive forces of Mother Nature. They bring with them intense winds and heavy rains, which can be very damaging to HVAC systems. However, hurricanes do have one benefit, which is that residents generally receive ample notice of their approach. Here are some steps that can be taken weeks, days, and hours before a hurricane to ensure as little damage is sustained as possible.

To Do Now: 

Get a Surge Protector

It is not uncommon for lightning to accompany a hurricane, and if by chance lightning does strike an AC unit, the entire HVAC system could be ruined. But, if a surge protector is installed in the home, there is nothing to worry about. Since a surge protector is useful year round, it may as well be installed now– no need to wait for a hurricane.

To Do As Soon As the News of an Impending Hurricane Breaks

Strap Down the HVAC Unit

Yes, AC units are heavy, but that doesn’t mean they are ironclad in a hurricane. To help keep it stationary during a storm, an outdoor AC unit should be strapped down. There are straps made just for this purpose, and they should be in place as soon as a hurricane is on the horizon.

Clean Up the Yard

Any large items in a yard are potential hazards to the HVAC unit. Seemingly harmless objects can destroy equipment when heavy winds blow through. Check the yard for any loose lawn tools, toys, or even tree branches and make sure everything is strapped down or put in a safe place.

To Do When the Storm Is About to Hit:

Remove Any Window Units

Hurricanes often come when the weather is still warm, so most homeowners won’t have packed up their window units yet. However, it is crucial that they are unplugged and removed before the hurricane arrives. Leaving them installed can ruin them, but it can also turn them into projectiles, causing additional damage to the home.

Cover the HVAC Unit

Hurricanes dishevel the world around them, which means debris is sure to make its way into the HVAC system if it is not covered. A strapped down tarp should be sufficient.

Turn Off the Breakers

The last thing that should be done before the storm hits is to turn off the breakers. This can prevent further damage if the home gets hit hard. After the storm has passed, the HVAC unit may need to be restarted, but that’s a simple fix.

Of course, sometimes a hurricane is so strong that damage is inevitable. But, if these steps are followed, the chance of needing substantial repairs is minimal. After a hurricane has passed, an inspection of the HVAC system is always a good idea.

CE’s Educational Event at Yankee Stadium was a Grand Slam

THE WIND-UP: HVAC Education at Yankee Stadium

On Friday, August 25, 2017, 30 engineers gathered in the SAP Board Room at Yankee Stadium to gain valuable knowledge from HVAC experts regarding various VRF products and DOAS. The Home Run Engineering Day was co-sponsored by CE and the Association for Facilities Engineering and featured a triple play of valuable sessions. Afterwards, attendees were VIP guests at the Yankee game against the Mariners. Read more

Add HVAC Parts and Supplies to Increase Your Bottom Line

You know that the more HVAC parts and supplies you sell, the more profit you will make. One of the easiest ways to increase your bottom line is by offering upgrades to your customers while you are in their homes. However, you are an experienced HVAC contractor, but maybe not a salesperson. And that’s okay! Here are some tips to help you offer more HVAC supplies to the customers you already have. Read more