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Can Closing Vents Save Energy?

Heating and cooling account for about half of your total at-home energy usage. No wonder you’re on the lookout for energy saving tips! Perhaps you’ve heard that closing air vents in unused rooms saves energy. It seems logical that with the door shut and the vent closed, your HVAC system would be free to heat and cool the rest of your home more efficiently.

Unfortunately, closing vents actually wastes energy. Discover the unintended consequences of closing vents, and you’ll realize how ineffective it is for lowering your utility bills.

Increased Ductwork Leaks

Ideally, duct systems should have low air leakage rates. However, even well-designed ductwork isn’t completely leak-proof. And if you close several air vents, the increased pressure within the duct system causes more leaks. This forces air from unconditioned spaces to circulate around your home, reducing the efficiency of your air conditioner and furnace.

Increased Energy Use from Variable-Speed Blower Motors

The high pressure within the duct system causes variable-speed blower motors to work harder as they attempt to maintain adequate airflow. This defeats your efforts to save energy.

Lower Airflow from Single-Speed Blower Motors

Most HVAC systems have a single-speed blower motor that operates at only two settings: on and off. It can’t combat the high pressure within the duct system, resulting in lower airflow. This means less heated and cooled air circulates around your home, making it less comfortable. Low airflow can also cause the AC evaporator coil to freeze, which makes the air conditioner unable to cool your home.

Greater Wear & Tear on the System

Low airflow over the AC evaporator coil causes some refrigerant to make it back to the compressor as a liquid, damaging this equipment over time. There’s also a higher chance for a cracked furnace heat exchanger, which requires immediate repair.

Better Energy Saving Tips to Try

If you’re discouraged after learning that closing vents doesn’t save energy, try these other more effective energy saving tips:

  • Partially close vents to help direct hot and cold air around the way you want.
  • Install a zoning system to heat and cool certain areas of your home efficiently. Multiple thermostats, air handlers, and dampers in the ductwork direct air right where you want it without any unintended consequences.
  • Upgrade your aging HVAC equipment to a new, energy-efficient model.

For help implementing these and other energy saving tips, please contact Arctic Air Conditioning today.

Testimonials
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”Air conditioning "died" on a 98 degree weekend. Extremly pleased that I was able to get a same day appointment. Christian showed up on time and quickly assessed the problem.…”

- Steph K
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”Took a no nonsense approach. Got right to the problem and resolved it very quickly. Fast, courteous and knowledgeable. I would absolutely use this Company and this technician again.”

- Frank Goodline
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”I would like to personally thank Arctic Air for making customer service a priority. A special thanks to “John” for reaching out and reinforcing my belief that I chose the…”

- Sunnie Casimiro
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”I have been a customer of Arctic Air for 9 years now. They are always prompt, knowledgeable and professional with their service. Today Dan Mawber (one of their service techs)…”

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”We have had wonderful service this week from Arctic Air. On Monday, Anthony came out to do our seasonal maintenance and made time in his schedule to accommodate us in…”

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”Very personable, professional, neat and efficient.”

- Mike Spinelli
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”This is my third experience with Arctic Air Conditioning and the service has been excellent each time! My call this time was because my air conditioning wasn’t working so it…”

- Barbet Rucker
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”We arrived home to find the AC was not running, called the service. Rob was here and my AC was up and running by 615pm. No exaggeration! Excellent service! I…”

- Lisa Michalski-Sciarrino
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”My brother needed a new heating & air conditioning system. I had him call Arctic Air. Since my brother needed some help understanding what to ask I was there from…”

- javier santiago
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”Our old furnace conked out 3 years ago. Got one estimate for a new furnace, which was more than our budget allowed. Arctic's estimate was quite a bit less. They…”

- MsRollingthunder Bingham
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”Kyle was very professional! He was pleasant, knowledgeable, and efficient! I hope I won’t have any problems, but if I do I would request this great young man! Best Regards,…”

- Ellen Siberberg
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”Kyle was awesome. Very polite and professional. Serviced my AC unit in a timely fashion.”

- Sherry Komosinski
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”Great! From the initial call to the tech just leaving. It’s a holiday weekend, they came with no problem, fixed the problem and didn’t charge us an arm and a…”

- Lyn WD
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”Excellent service they always take care of me as a customer and Ithe most polite people around the technician really takes his time and goes over everything and his name…”

- Gary Placona
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”The installers were professional and hardworking. They were prompt and had a great attention to detail. Would definitely recommend!”

- Meghann Valeo
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”Polite, efficient and informative. Very professional.”

- edward bergman
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”I'm extremely pleased with the service I've gotten from Arctic Air. They have always been thorough and professional and paid attention to details that were missed by other companies I…”

- Ellen Bee
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”Kyle was very professional and answered all my questions. My HVAC is ready for Summer! I will request Kyle again for the Fall maintenance. Enjoyable experience. Thank you!”

- Jessica Hegmann
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”I have never had anyone teach me specific details to help with increasing the functioning with my system and what to do if there is a problem. He explained every…”

- carly
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”On time, respectful, courteous, efficient, professional service.”

- Theodore Goldstein
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”Very professional and told me everything that he was going to check”

- tony
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