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>

What causes condensation on air vents?

• <div><p>Condensation forms when warmer, outside air combines with cooler air in your ductwork. This can happen when there are leaks in your air ducts, your HVAC system has a dirty air filter, or there’s a lack of insulation around the ducts. To prevent it from happening, replace your HVAC filters as directed. Also, once every five years, hire a <a href="https://www.angi.com/nearme/air-duct-cleaning/">local air duct cleaner</a> to clean and inspect them.</p></div>

What kind of refrigerant does my HVAC system use?

• <div><p>Some HVAC systems tend to use R410A refrigerant, although if you have an older model <a href="https://www.angi.com/articles/what-fair-price-r-22-refrigerant.htm">it may be using R22</a>. R22 is banned due to its harmful environmental and health impacts, and it is a sign that your AC unit is old enough to consider a replacement and the significant efficiency gains that could come with it.</p></div>

Top-rated heating and air conditioning pros.

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TRUSTED BY GRANBY, MO HOMEOWNERS

4.4
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Verified Reviews for Heating And Air Conditioning Service pros in Granby, MO

*The Angi rating for Heating And Air Conditioning Service companies in Granby, MO 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.

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Last update on November 15, 2025

Reviewed in May 2025
My repairman installed a nest thermometer and looked at the upstairs AC unit to assess the viability of repair. He concluded that he could not repair it and give me very reasonable quotes for a replacement options.
Cochran Heating and Air Conditioning
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Reviewed in September 2018
Thanks to all those from Ed's Electric who dropped what they were doing and helped in the prompt repair and upgrade and got power restored. We have air conditioning again. Yeah!
Ed's Electric Inc
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Reviewed in July 2015
I have had them install new units in the past. They always do a great job at a fair price. They have always done a great job on servicing all my heat and air conditioning.
T-N-T Heating & Cooling‎
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Reviewed in July 2015
I would highly recommend Barone's for Duct Cleaning, We had them clean the ducts prior to moving into our home. The previous owner had pets and never maintained the ducts. Barone's did a wonderful job and the final bill was $400 less than the original estimate. We have also had them do some...
Barone's Heat & Air, LLC
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Reviewed in July 2013
REPAIRED AIR CONDITIONER ON MY 96 BUICK . TWO OR THREE TIMES OVER THE LAST COUPLE OF YEARS & HAS DONE OTHER WORK ON MY OLD CAR TO KEEP IT RUNNING IN GOOD CONDITION.. ALSO HAS DONE WORK FOR MY SONS IN PAST ON THEIR VEHICLES. FAST & DEPENDABLE SERVICE. DOES EXACTLY WHAT HE SAYS IT NEEDS . & I'M...
JE Auto Repair
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Reviewed in June 2013
Cardinal HVAC's charge was reasonable but they didn't really do what I asked or what I really needed done. They came out and did things I could do but they did it so it was good.
Cardinal Hvac
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Reviewed in June 2013
He came the next day at the time he said he would. Rather than try and talk us into a new expensive air conditioner, he filled ours and said that he would keep track and if we weren't loosing a lot of gas in the years ahead, there would be no problem.
Colgin's Pro-Air
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Reviewed in April 2013
Midway Sheet Metal went above and beyond during the hottest time of the year to replace one of our AC units. All of the service professionals were excellent and the office staff were nice and accommodating. I appreciate their quality work!
Midway Sheet Metal Inc.
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Reviewed in October 2012
Was having problems with wiring done for new house. The AC / Heating unit kept on shorting out. I contacted Touchton, explained situation, and he came over. After maybe 5 mins, he indicated that he could not do the work and that I needed to get in touch with a heating and air company, as the...
Touchton Electric and Alarms Inc
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Reviewed in May 2012
I use them all time when I have a problem with my air conditioner. They are good. I got cold air now.
SOUTHWEST HEATING & AIR
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Find Heating and air conditioning pros in Granby

Cochran Heating and Air Conditioning

4.65(

)

•Approved Pro

Cochran Heating and Air Conditioning

4.65(

)

•Approved Pro

Customers say: Quality work

59 local quotes requested

5 years of experience

Cochran Heating and Air Conditioning is a locally owned & operated HVAC business serving Joplin and the surrounding areas. At Cochran Heating & Air Conditioning we work with integrity to make sure that the job is not complete until the customer is satisfied. From AC Service or Repair, to a full new install or fixing up your refrigeration system, we are your one stop shop for all of your HVAC needs! Call Dave Now to Schedule your Service Missouri Propane Safety Commissions MPGA 2.7.2022 P11d0390FEF9F8DE0 Financing NOW Available --- Yes EVEN on Repairs as low as $300 or New Installations!!

"My repairman installed a nest thermometer and looked at the upstairs AC unit to assess the viability of repair. He concluded that he could not repair it and give me very reasonable quotes for a replacement options. "

Vivian H on May 2025

"My repairman installed a nest thermometer and looked at the upstairs AC unit to assess the viability of repair. He concluded that he could not repair it and give me very reasonable quotes for a replacement options. "

Vivian H on May 2025

Ozark Air Master

5.00(

)

•Approved Pro

Ozark Air Master

5.00(

)

•Approved Pro

Customers say: Quick response

38 local quotes requested

13 years of experience

Ozark Air Master is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customer's interests and make their concerns the basis of our business. Please give us a call today!

"Of course the air went out after 5:00 on Friday evening, sent a message to Ozark Air Master, received a call within 5 minutes, a technician came out within 30 minutes and addressed the problem and repaired. Thank you Seth! They will be my go to from now on! 5 stars for this company! Regina McMillan "

Regina M on September 2025

"Of course the air went out after 5:00 on Friday evening, sent a message to Ozark Air Master, received a call within 5 minutes, a technician came out within 30 minutes and addressed the problem and repaired. Thank you Seth! They will be my go to from now on! 5 stars for this company! Regina McMillan "

Regina M on September 2025

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TRUSTED BY GRANBY, MO HOMEOWNERS

Verified Reviews for Heating And Air Conditioning Service pros in Granby, MO

Find Heating and air conditioning pros in Granby

Cochran Heating and Air Conditioning

Cochran Heating and Air Conditioning

Ozark Air Master

Ozark Air Master

Sundown Plumbing and Handyman

Sundown Plumbing and Handyman

Powell Mechanical

Powell Mechanical

Elite Mechanical and Construction LLC

Elite Mechanical and Construction LLC

Hewells Heating Cooling And Refrigeration

Hewells Heating Cooling And Refrigeration

Morris Construction

Morris Construction

Heating and Air Co.

Heating and Air Co.

Chris Downing 117 Service

Chris Downing 117 Service

Hooten Heating & Cooling

Hooten Heating & Cooling

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