Wireless Temperature Sensors for Better Controlled Temperatures

wireless sensors HVAC controls

Wireless temperature sensors make monitoring and controlling your HVAC system much easier.

Wireless Temperature Sensors for Better Controlled Temperatures

One of the most difficult issues a facility manager has to deal with is keeping the temperature within the building consistent. The building occupants complain that their space is too cold, while others may complain of excessive heat, making it clear that the temperature in your building is uneven. This doesn’t mean having to replace the entire system. By placing a few wireless devices throughout the building and minimal installation time, these complaints can be handled.

Temperature Sensing

Wireless temperature sensors are a great way to gain control over your building’s temperatures without opening up the walls and running wires for new thermostats. They play two parts, they not only monitor the temperatures inside the building, but also alert you if the temperature inside the building falls outside a certain range. Many of the wireless systems also inform you when the battery is low, saving you the trouble of waiting for the sensors to stop.

Wireless Sensors for Controlling Humidity

Being able to control the humidity throughout the building is another benefit that can be helped with the use of wireless thermostats. For some industries, it is a requirement to be able to control the humidity levels, for others it is simply a matter of keeping the occupants comfortable. It can also help during seasonal changes and when the volume of the crowd varies.

A building’s HVAC system works hard to keep the space comfortable. If the system isn’t working at top efficiency, you can install wireless devices to avoid the expense of having to install new wires throughout the building. Wireless temperature and humidity sensors and wireless thermostats can help fix the complaints that often come with building HVAC systems.

If your AC needs repair or service in LA or Orange County, please call Graves Heating and Air Conditioning Services, Inc. at 562-944-2118 to set up an appointment.

Don’t Damage your AC System Trying to Make it More Efficient

ventilation ducts

Closing off too many AC ducts can cause damage to your compressor

This tip gives more details on why closing off AC registers can cause damage to your AC compressor and result in a huge repair bill. To read the original tip click here.

A 6 inch duct will carry 100 cubic feet of air per min (cfm). If you close off one register, you might be able to force 125 cfm through another 6 inch duct, but you have lost 75 cfm in the process. You can’t force all the air for the system through one duct. There is too much static air pressure. AC systems require around 400 cfm per ton. Closing off ducts can reduce your airflow to perhaps 300 cfm per ton. This is not enough to give full evaporation to the refrigerant. If this occurs, you can start to get liquid refrigerant into your compressor. Compressors have very low tolerance for liquid inside. The valves are very thin pieces of steel like the thickness of cardstock paper. When liquid hits them, it can break out chunks and cause holes in there. It just breaks them up.

Liquid refrigerant is also a solvent, so it absorbs oil. If you get liquid refrigerant in your compressor, it takes away the oil lubricating the compressor. You end up with an increase in friction, resulting in less efficient operation and probable damage and early failure of the compressor. Interestingly, refrigerant gas will carry oil and the designers rely on this property to lubricate the inside of the compressor whereas the liquid refrigerant will wash it away. You can see scratches inside the cylinder of a compressor where liquid refrigerant has run through it.

It’s very bad for the compressor to restrict air flow through the ducts of your AC system by closing off too many registers. Please exercise caution when closing registers.

If your AC needs repair or service, please call us at 562-944-2118 to set up an appointment.

Let the Buyer Beware

Repair techs should clarify exactly what is wrong with your system before you move forward with repairs.

Repair techs should clarify exactly what is wrong with your system before you move forward with repairs.

Here are some consumer advocacy tips to help you keep from “being had”:

  1. How many flyers did you get last year for a $70 AC “routine” maintenance? That kind of deep discount offering is likely to be a fishing expedition for big ticket repairs. The fact is that it takes more than $70 to keep a typical AC repair truck and technician on the road for the amount of time it takes to do one-off “routine” maintenance calls. This is often the old bait and switch technique, so be careful.
  2. Expect your repair technician to specify the diagnosis of the problem before you spend any money for a repair. You can easily end up with a repair that is more than is necessary for the situation. Our technicians go out of their way to explain why a part is bad and to explain the repair needed.
  3. Don’t be afraid to slow down and get a second opinion.

If your AC needs repair or service, please call us at 562-944-2118 to set up an appointment.

2 Signs that your AC Unit may be low on Freon

service and shut off valve on new AC condenser unit

Refrigerant is not consumed in the air conditioning process. If you suspect a leak, you should see if your technician can find it and repair it.

Refrigerant stays constant in your unit. It is not consumed during the air conditioning process. It only needs to be replaced when there is a leak in the system. Getting the ‘freon’ or refrigerant recharged in your system should not be a part of regular maintenance if your system is working properly. Two signs that your unit may be low on freon:

  1. You are not getting the 20 degrees difference between the supply and return air. See our tip on checking to see  if your system is functioning properly for more information on this.
  2. You see oil around the unit.

 

If you suspect that your unit requires a repair, don’t take a chance, give us a call at (562) 944-2118.