Posts Tagged ‘Haverhill’

Beware of Off-Season Problems Plaguing your Air Conditioner

Monday, March 14th, 2016

Haverhill, FL and the surrounding communities stays warm for most of the year, and with March already upon us the temperatures will be heating up before you know it. That means you’ll be using your air conditioner more often in the ensuing weeks after it has likely sat unused for the last few months. That lack of use can create its own issues if you aren’t careful, however, and before your AC sees daily use, you should get them checked and addressed. A quality maintenance session can take care of a lot of these for you, but it helps to know what some of them are so you understand their importance in maintaining a high level of efficiency with your air conditioner. (more…)

Is Your Thermostat Accurately Maintaining Indoor Temperatures?

Monday, September 24th, 2012

Whenever a problem develops with your Wellington FL air conditioning system or heating system, the first thing you do is call for repairs, but more often than not, the problem is actually related to the thermostat. That simple device on your wall can make your HVAC system essentially inoperable if it does not accurately measure and maintain the temperature in your home. If you notice a drop in heating or cooling in your home, consider the following issues and whether they may be the root problem.

  • Settings – Is your thermostat set to the right temperature? You can check for calibration issues by simply turning up or down your thermostat to see if it has the desired effect. If your system won’t turn on, crank up your thermostat and if it still doesn’t turn on, either your system is broken or the thermostat needs to be replaced.
  • Mode – Many thermostats have different mode settings – check to make sure yours is in the right heating or cooling mode and that it will work properly to match the specific needs of your home’s heating and cooling systems.
  • Accuracy – Sometimes, a thermostat is simply inaccurate or doesn’t trigger when it should. This can be due to a thermostat issue at the HVAC system as well, so the best way to be sure is to have a professional visit and perform a thorough inspection of your entire system.

If you are having issues with your thermostat, consider having it upgraded and replaced with a new digital programmable thermostat. These devices allow you to set the temperature when you are not home and reduce how much cooling or heating you use on a daily basis. You might also consider having a zone control system installed that will separate your home into separate zones and reduce heating or cooling based on where people are during the day. Regular thermostat maintenance should also be performed to ensure yours continues to work accurately over time.

For air conditioning service in the Wellington FL area, give Astro Air Inc. a call!

How to Calculate Duct Size for an AC System

Monday, September 10th, 2012

Duct sizing is a complex process using one of three methodologies. The goal of duct sizing is to provide the perfect space through which heated and cooled air can travel around your home. Ducts should provide ample air flow to keep you comfortable without overworking your Boca Raton air conditioning system or costing you an arm and a leg on your energy bill.

Methods Used for Sizing

There are three methods used for most modern duct sizing. The first is the Velocity Method. The velocity method takes into account the speed at which air flows through the ducts based on their general size. A series of equations is used to determine this, including duct cross sectional area, air flow rate and air speed. A much more detailed breakdown is available on the EngineeringToolbox.com for those interested in the math behind the process.

In general though, the velocity method allows contractors to determine the appropriate size and layout of ducts based on their application (residential, commercial, industrial or high speed) and their position (main or branch ducts).

Contractors may also use the Constant Pressure Loss and Static Pressure Recovery methods to design ductwork for your HVAC system. The constant pressure loss method tends to result in more components but provides a more accurate reading of the actual pressure loss in the system based on the materials used and the layout of your ductwork.

Static pressure recovery focuses on ensuring the same pressure level is achieved at all vents and inlets for the system. It is probably the most complicated sizing method, however, so it is rarely used for residential installations.

Simplifying the Process

Were we to break down the process into its core components, this is what a contractor would do when sizing your duct work:

  • Determine CFM for Each Room – using the Manual J for load calculations, they would determine the CFM. This is based on the (Room Load/House Load) x Equipment CFM. The entire house must be measured and load calculations completed before this can be done.
  • Friction Loss Rate – Friction loss rate is the (Available Static Pressure x100 / Effective Length).
  • Duct Sizing – Finally, the contractor will use a chart or software to select ductwork based on the friction loss and CFM calculated in the first two steps.

The goal of all of this math is to ensure that the system installed is exactly as large as is necessary to distribute heated or cooled air to the entire house. Incorrect measurements result in improper delivery of that air and a system that doesn’t quite get the job done. For more tips on ductwork or air conditioning installation in Boca Raton, give Astro Air Inc. a call!