Bigger is not always better!

May 29, 2018 | Cooling

It’s a serious mistake to buy more air conditioning capacity than you need. For example, a larger A/C will cost more to operate and give you less comfort. Why? Because it will have short “on” and “off” periods, allowing too wide a temperature range. The short “on” periods of an oversize air conditioner will prevent it from removing enough humidity from your home, an important part of its function. An air conditioner that’s too big will result in clamminess and mold formation.

A bigger air conditioner is more powerful but not better for your home. Here’s why… when an air conditioning system runs, it does two jobs. It lowers the temperature of the air, and it removes moisture from the air. In order to remove moisture from the air, the air conditioning system needs to run for a certain amount of time. While the air conditioner is running and the blower motor is pushing air over the indoor coil, or the evaporator, the air temperature will change. As a result, water vapor will condense on the evaporator coil. This occurs in over sized air conditioners too. However, over sized air conditioners don’t run for a long time because they satisfy the thermostat quickly and then shut off. The short cycling of the air conditioner does not remove enough humidity in the home and adds wear and tear on the air conditioner. When an air conditioner is over sized, it starts up and shuts down more frequently because it runs for only a short time to meet the thermostat set point. An air conditioning system that’s too large or too powerful for your home can waste money, energy and comfort.

“Lots of things are better if they’re bigger, like TVs or ice cream cones, but not air conditioning systems,” says Rick Fravel, Contemporary Systems owner. “An A/C unit is supposed to dehumidify the house as well as cool it. A unit that’s too large will turn on and off too quick, bringing the temperature down fast but not removing the humidity. So you’re losing comfort as well.” In your home if your air conditioner runs for only 5 to 10 minutes before shutting off, it’s over sized. If it runs over half an hour, it’s probably sized correctly.

If you’re building a new home or adding an addition, Rick recommends performing a Manual J load calculation to determine the heating and cooling loads. In fact, some counties make the Manual J load calculation mandatory when applying for an HVAC permit.

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Ralph J Picarello
Ralph J Picarello
05:03 16 Aug 18
Contemporary replace 17 year old furnace and AC. Michelle kept us up to date and somehow put a rush on the job. The last heat wave was terrible. Rick came out and explained the whole process and also was helpful with helping us pick out the right system. Everything was installed and running in half a day. Cleaned up and gone .Professional all the way. Recommend to anyone.read more
Christopher Whyte
Christopher Whyte
20:33 14 Aug 18
Replaced my old AC and gas furnace. These guys provided good communications, convenient scheduling, and a fair price. They also helped work a BGE rebate in a timely manner. I was very happy with the overall service. I would recommend them and use them again for my future HVAC needs.read more
Christina Petrides
Christina Petrides
14:18 13 Aug 18
Contemporary Air Services was amazing! I had to have my whole system replaced. They were very professional, friendly and great with my friend's dogs who were staying at my house. They worked until the job was complete and Rick came in to check that everything was good to go before and after the job was complete. They also registered my system for the warranty without me having to do a thing! Highly recommend!read more
Jennie Phaneuf
Jennie Phaneuf
16:56 07 Aug 18
The lovely folks at Contemporary Air Systems went out of their way in the customer service department. Michelle was extremely helpful, patient, and informative. Rick is an absolute star! Seriously, I don't think there is anyone nicer than Rick. He's knowledgeable and highly experienced. The two gentlemen that installed our unit were polite, friendly, and tidy. I couldn't be more happy with my experience and would definitely recommend them to anyone in need of their services.read more
Rob Grodsky
Rob Grodsky
22:25 07 Jul 18
I am so impressed with the professionalism of the entire staff of Contempray Air Systems. All my questions were answered fully and timely throughout the process. Moreover, the owner is hands-on as site manager and ensures the job is done to perfection.read more
Jackie Johnson
Jackie Johnson
19:44 01 Jul 18
I wanted to thank Contemporary Air for coming to my rescue this morning. Forcasted temperature today is 98. AC went out last night. I called an left a message and got a call back first thing this morning. Rick was at my house within an hour. Very professional and friendly. Fixed my AC in under an hour. Very affordable. I will definitely be using Contemporary Air for any future hvac work and will highly recommend to everyone. Thanks again for the great service!read more
michele nicole
michele nicole
16:23 18 Jun 18
I rarely write reviews but the service I received today was excellent. The contractor came to home the same day I called to make an appointment. He was polite and worked quickly to fix both my AC units all while explaining and showing me what the issues were. The price was very reasonable and affordable. Finally a business I can trust. I will always support this business.read more
Alan Lawson
Alan Lawson
03:15 07 Jun 18
Contemporary Air Systems, Inc. replaced our old heat pump with a new one from Bryant. From the initial contact with Michelle and Rick to the completion of the process we received excellent customer service. Everyone involved was professional and courteous as they removed the old unit and installed the new, always willing to answer any questions we had. We would definitely recommend them to anyone who appreciates prompt service and quality product.read more
Terrill Harris
Terrill Harris
03:03 21 May 18
I had a great experience with having my HVAC system replaced by Contemporary Air Systems. The staff was very professional and knowledgable. They made my transition to my new system seamless. I would highly recommend them.read more
Andrew Rosenstein
Andrew Rosenstein
02:14 10 May 18
I have been dealing with Rick and Michelle for the past decade. Always friendly, knowledgeable, excellent customer service from them. Rick personally oversees all the jobs. Excellent prices, and products. You will not be disappointed!read more
Angela Single
Angela Single
22:22 23 Apr 18
Contemporary Air Systems has been great since I called nervous about a noise my old unit was making. Rick came out to check and upon discussion, we decided to start moving toward a new system. He & Michelle made the process easy. He worked with my schedule, which is difficult at best, and she worked almost exclusively through email, because it's easier for me. The actual installation was quick & didn't really disrupt the household. Both technicians were awesome, and Rick came to double check everything just in case. The new units have both been tested in this crazy MD weather and they work equally well. I'm excited to see how they impact our power use. I'm very happy with CAS and the treatment from their staff. I'd recommend them to everyone who needs the services they can provide.read more
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Contemporary Air Systems, Inc., is a Maryland (MD) Heating, Cooling, Air Conditioning, Heat Pump, Ductless Mini-Split and Furnace repair, service, replacement and maintenance Company located in Baltimore County. We service Baltimore and Harford County. Contemporary Air Systems, Inc. employs only the best technician for air conditioner repair and furnace repair as well as all air conditioner replacement and furnace replacement in Baltimore MD, White Marsh MD, Towson MD, Timonium MD, Cockeysville MD, Perry Hall MD, Hunt Valley MD, Phoenix MD, Bel Air MD, Edgewood MD, Fallston MD, Kingsville MD, Lutherville MD, Monkton MD, Parkton MD, Rosedale MD, Essex MD, Dundalk MD, Middle River MD, Parkville MD, Fork MD, Joppa MD, and more. So when you ask to find "A heating and air conditioning repair or service company near me," you've come to the right place. To set-up a repair service, estimate or replacement estimate, call us. Contemporary Air Systems, Inc. services all furnace, AC, humidifier, filter, thermostat, heat pump, air cleaner and air handler brands including Carrier, Bryant, Payne, Trane, Rheem, Ruud, Amana, Frigidaire, Gibson, Goodman, Maytag, American Standard, Aprilaire, Honeywell, White Rogers, Lennox, Armstrong, Daikin, Mitsubishi, Fujitsu, York and more.