range hood | Morgan Inspection Services

From my own experiences and observations, range hoods or vent hoods are one of the most-neglected appliances in the home. Range hoods are not just designed to be used when you burn some food and want to get the odor and smoke out of your kitchen. Range hoods serve multiple purposes – all of which are related to the indoor air quality of your home. Some of these purposes are the following:

  1. Remove toxins from the air. Toxins such as formaldehyde are produced when some foods, such as cooking oils, are heated.
  2. Remove combustion gases from the home.  If you have a gas stove, then combustion by-products such as carbon monoxide are produced when your burners are on.
  3. Smoke
  4. Odors
  5. Grease
  6. Heat
  7. Moisture

In order to minimize the amount of these contaminants that are in the air inside our homes, it is essential to use a range hood every time you cook. However, not just any range hood will do. With some exceptions, the International Residential Code requires homes to have a range hood that exhausts outside the home. Ventless or recirculating range hoods can filter out a small portion of the contaminants produced while cooking, such as some grease, but the large majority of these contaminants will simply be blown back into the home, so these range hoods are not nearly as effective at removing contaminants as the ducted range hoods are.

There are some kitchen arrangements that simply do not allow a ducted range hood to be installed, but if at all possible, it is highly recommended that a ducted range hood be installed. So, if you are remodeling your kitchen or building a home, insist that a ducted range hood be installed. It may cost a little more to install the duct, but in the long run it will be worth it. Not only will it help the keep the air in your home cleaner, but it will also lower your air conditioning bill as it removes much of the moisture and heat produced during cooking – thus reducing the load on your air conditioning system.

There are several factors to consider when shopping for a range hood. It is important that your range hood be at least as wide as your cooking surface as this will help it to capture more of the cooking by-products. Probably the most critical factor to consider in choosing a range hood is the amount of airflow that it produces. Airflow is usually measured in cubic feet per minute (CFM). Obviously, the higher the air flow, the more contaminants the hood will be able to remove from the home. The rule of thumb is that you want at least 100 CFM for every foot of width of your cooktop. So for a standard 30-inch cooktop (2 ½ feet), you would want a range hood with an airflow of  250 CFM or higher.

Do yourself a favor. Run your range hood every time you are cooking. If you remodel your kitchen or must buy a new range hood, make sure you get a vented one. It will save you a little on you cooling bill, and it will make the air in your home healthier.

Mike Morgan

Professional Home Inspector TREC # 6231

Morgan Inspection Service, providing Brownwood, San Angelo, and Abilene Tx with Premium Home Inspections

For more ideas on keeping your house running efficiently, see our post on home maintenance.

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oven’s temperature, If you have an oven that seems to burn things or doesn’t cook them enough, then it’s possible that your oven temperature is not adjusted correctly. This could be caused by various issues with your oven, but in many cases, your oven temperature can be adjusted very easily, and at virtually no expense. Your only expense will be purchasing an oven thermometer for less than $10 if you do not already have one.

oven's temperature

For the purposes of this discussion, there are two main types of ovens: those with control knobs and those with digital controls. It doesn’t matter if you have a gas oven or an electric oven. So now let’s talk about how to adjust your oven temperature.

Ovens with control knobs:

On ovens with control knobs it’s often a simple process to adjust the temperature of your oven simply by making a simple adjustment to the knob. Since you are reading this article, I assume that you already know that your oven temperature is off, so you may already have an oven thermometer. If not, you’ll need to buy one. They’re available on Amazon for less than $6. You can also purchase one at Walmart or probably most dollar stores for just a few dollars. You’ll will need the thermometer to see how close your actual oven temperature is to the setpoint.

Here are the steps to take to adjust the temperature of an oven with control knobs.

  1. Put the thermometer in the oven and turn the oven on to 350° or 400°. After 20 to 30 minutes, check the thermometer and see what temperature it is reading.
  2. Calculate how far off the temperature is from the setting on the knob.
  3. If the temperature is off by less than about 15 degrees, then you’re probably not going to be able to get much closer than that, but you can try if you would like. If the temperature is off by 25° or more, then you should be able to get it a lot closer. Here’s what you need to do to adjust it.
  4. Pull the temperature knob off of the oven’s temperature .oven's temperature
  5. Look on the back and make sure it has screws similar to what is shown in the photo. (if there are no screws, then it’s not possible to use this procedure.)
  6. Loosen the two screws slightly.
  7. For our purposes, let’s assume in your oven test in step 1 that you set the oven temperature to 400°, but when you checked the thermometer later, it was only reading 370°. This means you need to adjust the knob down by 30°.oven's temperature
  8. Make a note of what number meets up with the marker on the inner part of the knob. (In the photograph, 350° is the temperature at the dot on the inner part of the knob.)
  9. Calculate what new temperature should line up the marker in the center of the knob. (In our scenario, we need to adjust the knob down by 30°. Since it is currently at 350, we need to reduce it by 30 degrees so it will end up at 320.)
  10. While holding the inner part of the knob, turn the outer circle so that 320 meets up with the dot on the knob.
  11. Tighten the two screws on the back.
  12. Put the knob back on your oven.

That is all there is to it. You may want to repeat the test to make sure that it worked, and that the oven’s temperature is much closer to the set point.

NOTE: If there is not enough adjustment room on the knob to get to the correct temperature, then it is possible that your oven has other problems such as a bad thermostat, and this procedure will not work.

Ovens with digital controls:

On oven’s temperature with digital control knobs it is normally an even simpler procedure to adjust the temperature of your oven, however, I cannot give you the full procedure because every oven maker does things a little differently. Here are the basic steps to adjust your digitally-controlled oven temperature.

  1. Put the thermometer in the oven and turn the oven on to 350° or 400°. After 20 to 30 minutes, check the thermometer and see what temperature it is reading.
  2. Calculate how far off the temperature is from the setting. (For our purposes, let’s assume that in your temperature test above that you set the oven temperature to 400°, but when you checked the thermometer later, it was reading 425°. This means you need to adjust the knob up by 25°.)
  3. Here is where I cannot tell you exactly how to proceed because every brand of oven is different, so you will have to look at your oven manual or google how to adjust your specific oven. Basically, you will push and hold one or two buttons on your oven until the display changes, indicating that you are in “Calibration” mode. At this point, you will input the amount of the adjustment to be made (in this case 25°). oven’s temperature

This article was written by Mike Morgan, owner of Morgan Inspection Services. Morgan Inspection Services has been performing home inspections in the Brownwood, Abilene, and San Angelo areas since 2002. We also perform septic and well system inspections and swimming pool inspections. Contact our Abilene Home Inspector today- Call 325-998-4663 or email at mike@morganinspectionservices.com

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