Will low refrigerant cause a coil to freeze?

• <div><p>If refrigerant levels are low, it can cause the evaporator coil to freeze up. Low freon causes a drop in pressure, which will make the coil too cold and cause moisture to freeze on the coil. Your system may be <a href="https://www.angi.com/articles/does-freon-leak-mean-i-must-get-new-home-ac-unit-cant-i-just-get-leak-fixed.htm">low on refrigerant because of a leak</a>. </p><p>Make sure to have maintenance performed twice a year, and contact your local HVAC technician if you suspect your system has low freon levels. </p></div>

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Q: Does a frozen AC unit affect indoor air quality?

• <div><p>Yes, a frozen AC unit can affect your indoor air quality since the reduced airflow won't be as effective at removing air pollutants, like dust and other allergens. Additionally, ice around the unit can create excess moisture, leading to mold and mildew that can damage your home if you don&rsquo;t catch it early.</p></div>

Q: How do you know if something is wrong with your HVAC?

• <div><p>Indications of an HVAC problem include inconsistent heating or cooling throughout your home, unpredictable temperature changes, or inadequate air flow from vents. Abnormal sounds such as grinding, banging, or hissing, and unpleasant smells like mustiness or burning are also potential warning signs. A rise in energy costs without an increase in usage may also imply decreased efficiency. An HVAC system that frequently cycles on and off or cannot maintain a stable temperature is malfunctioning.</p></div>

Q: Should you hear air coming out of vents?

• <div><p>It&rsquo;s normal to hear a low humming sound as air moves through your vents. Most of the time, you probably won&rsquo;t even notice it. However, if that sound becomes disruptive or if you hear more concerning noises (such as rattling, clicking, banging, hissing, or grinding), there might be a problem with your HVAC system.</p></div>

Q: Can I buy a capacitor for my AC?

• <div><p>You can buy a new AC capacitor through most big-box home improvement stores, from an HVAC contractor, or from the manufacturer. Use the model number of your air conditioning unit to make sure you purchase the right part for your unit. Also, keep in mind that the cost of this type of part can vary significantly depending on who you purchase it from, so shop around to get the best price.</p></div>

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Verified Reviews for Heating And Air Conditioning Service pros in Roby, TX

*The Angi rating for Heating And Air Conditioning Service companies in Roby, TX is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Roby, TX is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on December 05, 2025

Reviewed in April 2024
We hired West to do the spring tune-up on both our AC systems since we'd just moved in to our new home. He arrived on time, walked us through both systems and how to maintain them, and the cost was a very reasonable amount compared to other companies. West has earned our business from here...
West Air Systems
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Reviewed in November 2023
I recently had the pleasure of hiring an HVAC installer for my home, and I couldn't be more satisfied with the service provided. The team demonstrated exceptional professionalism, arriving on time and completing the installation efficiently. Their expertise was evident throughout the process,...
A & A Mechanical Group, LLC
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Reviewed in November 2021
Considerate, Professional and Informative, Nate is always helpful. This day he walked us through buying a heating and air conditionining system. Very easy process, fillout loan information, then the estimate information is given wha la you're done. Now just sit back and wait the system...
Quality Cooling and Heating
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Reviewed in July 2015
No new cover can be found for the A/C. In October of 2014, I was informed by Jason Crouch that I would be getting a new heat pump. Paid for by the insurance company, they insisted that I let them get speedy electric and A/C out of Midlothian, TX for a better deal even though I wanted someone...
Elite Custom Roofing
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Reviewed in May 2015
The salesman failed to accurately measure the attic egress and the install team had to tear out my stairs, which will cost me to have replaced. The installation of the HVAC system went OK but I'm not happy with the additional cost that was NOT predicted or planned for.
Sears Roofing
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Reviewed in September 2013
They did the oil change, and they found a small leak in the A/C unit, which they fixed and recharged for me. They were very prompt and courteous.
HONDA OF ABILENE
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Reviewed in May 2013
Air-Tech Heating and Air Conditioning was used by our builder when our home was built and we have always had lots of dust inside our home, even after installing Woodridge triple pane windows. Some rooms accumulate dust more quickly than other rooms with our closets being the worst. We went to...
AIR-TECH HEATING & AIR CONDITIONING
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Reviewed in December 2010
I am so pleased with Hall Air Conditioning each and everytime I have called them out to our house. They are prompt, very reliable and just wonderful to work with.
Hall Air Conditioning
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Find Heating and air conditioning pros in Roby

Artic

4.88(

)

•Approved Pro

Artic

4.88(

)

•Approved Pro

Customers say: True professional

Recommended by 98% of Angi customers

42 local quotes requested

We pride our company on Reliability, Great Communication, Integrity, and Quality work. We strongly believe in giving our absolute best in all of our projects, no matter how big or small. We are experts in our trade, and will always keep you educated on your particular task or project. We look forward to earning your business! Service/Diagnostic Fee - $79! Financing Available!

"Very knowledgeable. Fixed my problem"

Lori O on February 2024

"Very knowledgeable. Fixed my problem"

Lori O on February 2024

Sentri Homes

No reviews yet

Sentri Homes

No reviews yet

337 local quotes requested

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.

WHAT'S IN IT FOR ME? Cut your bill between 30%-60% at no additional cost by locking in your utility rates from several years ago. Homeowners MUST QUALIFY for this limited program. SUMMARY Simple Solar Advisors. The lowest price for the best quality home services. Reason? We provide volume nationwide to our vetted local installers. We're virtual. Your steps are easy. HOME SERVICES Solar, Roof, HVAC, Windows, Remodeling, etc.

EBA Mechanical

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EBA Mechanical

No reviews yet

30 years experience. Service, Sales & Installation. Quick service. Free estimates.

Krell Distributing Co Inc

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Krell Distributing Co Inc

No reviews yet

53 years of experience

Additional DBA - Krell Industries. Family owned & operated. Nationwide service.

Second Nature (Formerly FilterEasy)

5.00(

)

Second Nature (Formerly FilterEasy)

5.00(

)

Customers say: Quick response

Recommended by 100% of Angi customers

Second Nature, formerly FilterEasy, empowers its members to achieve long-lasting, sustainable home wellness with convenient subscription plans, including high-quality home air filters and refrigerator water filters. We exist to simplify home wellness, to make it so easy and convenient that it becomes second nature. Learn about our products and subscribe at www.SecondNature.com/home.

ABT Plumbing Electric Heating & Air Conditioning

4.67(

)

ABT Plumbing Electric Heating & Air Conditioning

4.67(

)

Customers say: Quality work

Recommended by 100% of Angi customers

"They did an outstanding job and I would highly recommend them to anyone. I would definitely hire them again."

Debbie V on February 2022

"They did an outstanding job and I would highly recommend them to anyone. I would definitely hire them again."

Debbie V on February 2022

Precision landscaping

No reviews yet

Precision landscaping

No reviews yet

31 years of experience

We are a fast growing family owned business. We strive for customer satisfaction and having the best prices in town. We can handle all of your landscaping needs and we are hvac certified and specialize in heating and air work also.

Air One Mechanical

1.00(

)

Air One Mechanical

1.00(

)

26 years of experience

Air conditioning, heating services

Showing 1-10 of 39

Heating and Air Conditioning questions, answered by experts

If refrigerant levels are low, it can cause the evaporator coil to freeze up. Low freon causes a drop in pressure, which will make the coil too cold and cause moisture to freeze on the coil. Your system may be low on refrigerant because of a leak.

Make sure to have maintenance performed twice a year, and contact your local HVAC technician if you suspect your system has low freon levels.

Yes, a frozen AC unit can affect your indoor air quality since the reduced airflow won't be as effective at removing air pollutants, like dust and other allergens. Additionally, ice around the unit can create excess moisture, leading to mold and mildew that can damage your home if you don’t catch it early.

Indications of an HVAC problem include inconsistent heating or cooling throughout your home, unpredictable temperature changes, or inadequate air flow from vents. Abnormal sounds such as grinding, banging, or hissing, and unpleasant smells like mustiness or burning are also potential warning signs. A rise in energy costs without an increase in usage may also imply decreased efficiency. An HVAC system that frequently cycles on and off or cannot maintain a stable temperature is malfunctioning.

It’s normal to hear a low humming sound as air moves through your vents. Most of the time, you probably won’t even notice it. However, if that sound becomes disruptive or if you hear more concerning noises (such as rattling, clicking, banging, hissing, or grinding), there might be a problem with your HVAC system.

You can buy a new AC capacitor through most big-box home improvement stores, from an HVAC contractor, or from the manufacturer. Use the model number of your air conditioning unit to make sure you purchase the right part for your unit. Also, keep in mind that the cost of this type of part can vary significantly depending on who you purchase it from, so shop around to get the best price.

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