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Q: When should I replace my AC expansion valve?

• <div><p>A frosty expansion valve that isn't blowing out cool air is a sure sign that it&rsquo;s time to replace it. It might also be time to replace the TXV valve if your AC unit switches off soon after turning on or if you have poor airflow in your home.</p></div>

Q: How do I know if my AC compressor is bad?

• <div><p><a href="https://www.angi.com/articles/troubleshooting-common-air-conditioning-problems.htm">Troubleshooting common issues with your AC</a> often sheds light on a problem with the compressor. Signs that you need to replace a bad compressor include your AC blowing warm air, short cycling (turning on and off), making strange noises, and blowing less air overall. Since these problems can stem from several areas of your AC, always call a local AC repair team to confirm it's the compressor.</p></div>

Q: Is it normal for my attic to be hot?

• <div><p>It is normal for the attic to be hotter than the rest of the house in the summer, but only by about 10 or 20 degrees. Attics that aren&rsquo;t properly insulated or ventilated can reach temperatures of 130 degrees or more which can cause damage to the home&rsquo;s structure, including the roof, wood framing, and HVAC system. </p></div>

Q: Is it OK to run the AC and dehumidifier together?

• <div><p>Yes, a dehumidifier and air conditioner can be used simultaneously in a home. A dehumidifier can bolster an air conditioner&rsquo;s efficiency. Typically, a dehumidifier is used when the air conditioner alone cannot keep a home&rsquo;s humidity levels at a comfortable <a href="https://www.angi.com/articles/maintain-whole-house-humidifier-summer.htm">indoor humidity</a> level, which should, ideally, be between 30% and 50%.</p></div>

Q: What is the most common rule used for HVAC load calculation?

• <div><p>A common HVAC rule is that for every 500 to 600 square feet of living space, you need 1 ton of heating or cooling capacity. Now that you know this common rule, you also need to know that it isn&rsquo;t very accurate, and a dedicated pro wouldn&rsquo;t use it for your home. If you talk to a pro who won&rsquo;t or can&rsquo;t perform a proper Manual J calculation, consider hiring someone more thorough.</p></div>

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Verified Reviews for Heating And Air Conditioning Service pros in Nephi, UT

*The Angi rating for Heating And Air Conditioning Service companies in Nephi, UT 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 Nephi, UT 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 July 14, 2025

Reviewed in July 2025
We loved working with Dez! She was so professional and made sure all of our needs were met!
Dez Jaide Design Studios
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Reviewed in January 2025
These guys were real pros who helped us diagnose and fix a couple recurring issues with our plumbing. They were very friendly and helped us learn how to prevent and fix the issues ourselves if they pop up again. They worked quickly and efficiently.
Prime Flow Plumbing LLC
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Reviewed in March 2024
Kimball and Freddy were great. Arrived on time and explained everything. Finished the same day and left site clean.
West Shore Home Salt Lake City
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Reviewed in June 2023
Excellent quality and communication at a competitive price!!!
AR Custom Landscaping LLC
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Reviewed in April 2023
He was very attentive and would watch to make sure the majority of the leaves fell before he started his cleanup which was super nice. Very professional
Lee's Lawn Care & Yard Cleanup
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Reviewed in February 2023
Levi came and put in a floor outlet for us. He was professional and efficient.
Hollis Electric
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Reviewed in September 2022
These guys are awesome. They came on time and finished earlier than expected. The work they did on my roof looks perfect. I had 3 bids and theirs was very competitive. I chose them not only for the value, but also because of the warranty they offer, the high quality products they use, and the...
Mountain West Roofing and Construction, LLC
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Reviewed in June 2022
Very well. Javier and Austin were great and helped us find the solution to out problem!
DaBella - Provo
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Reviewed in April 2022
Great company, easy to work with. Made sure we were on the same page with design. Cleaned up after themselves. Also made sure we knew what to expect with the whole process. They were professional, friendly and great communicators. Craftsmanship was great. Highly recommend.
Sage Decks LLC
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Reviewed in October 2021
Moses and crew was very friendly and professional. Price was good. Clean up was good. Job was good. Moses found a couple wasps nest in the willow trees and even got stung a few times. Sprayed the nest with wasp spray and came back the next day and finished the job. I would absolutely hire...
Mr. Alone Services LLC
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Find Heating and air conditioning pros in Nephi

Utah Climate Pros

5.0(

)

Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+47 more

Serving Nephi, UT and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"Excellent customer service. Garrick was prompt, personable and very knowledgeable. We had a complicated issue with our air-conditioner which he took a lot of time to resolve. His expertise saved us a lot of money on an issue others may not have tackled. Highly, highly recommend this company for your HVAC needs."

Response time8 hrs

Response rate98%

10 neighbors recently requested a quote

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Central Valley Mechanical, LLC

4.0(

)

Geothermal Heating or Cooling System - InstallGeothermal Heating or Cooling System - Service

Serving Nephi, UT and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"I called, they came, they fixed! What else is there!"

+28

Response time2 days

Recommended by66%of homeowners

Air Ducts & Vents - Clean

Serving Nephi, UT and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"I had an amazing experience! The cleaning was extremely detailed and professional from start to finish. Everything was spotless, organized, and smelled so fresh. You can truly tell there is care and experience behind the work. Highly recommend for anyone looking for reliable and high-quality cleaning services!"

Air Ducts & Vents - Clean

Serving Nephi, UT and surrounding areas

In business since 2023

Free estimates

Credit card accepted

"Bo at Diamond Ducts did a great job cleaning out my dryer vent. He was on time, worked efficiently and explained the process well. I will call him next time I need my vents cleaned."

Response time2 hrs

Recommended by92%of homeowners

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Affordable Refrigeration & HVAC LLC

4.9(

)

Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install - For Business+6 more

Serving Nephi, UT and surrounding areas

In business since 2021

Free estimates

Credit card accepted

"Very knowledgeable and willing to provide a custom quote for my needs."

Recommended by100%of homeowners

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ALL ABOUT COMFORT HEATING & AIR,LLC

4.8(

)

Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+47 more

Serving Nephi, UT and surrounding areas

Credit card accepted

"It was very professional, educational and friendly. The guy help me named Johny was really nice and helpful."

+10

Recommended by100%of homeowners

Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+47 more

Serving Nephi, UT and surrounding areas

In business since 2003

Credit card accepted

"It was a great job everything went fine"

Recommended by100%of homeowners

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North Alabama Technical Services

4.9(

124

)

Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+47 more

Serving Nephi, UT and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"Mr. Ferrell first connected his computer to my computer via internet and worked for quite a few hours trying to determine what exactly was wrong. The next day he continued working from his computer for several hours. He determined he would have to have my desktop tower to complete the repair. He and my son met in Huntsville to exchange the tower. He then cleaned up a lot of what was wrong and reloaded Windows 10. He deleted the D: drive which had way too much memory allotted to it. The tower was returned and I plugged it all back together and it is working better than it did when I first purchased it. I would use him again and I recommend him highly to anyone needing computer updating and/or repair. His work is warrantied and he is very personable, knowledgeable, and helpful."

Recommended by97%of homeowners

Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+49 more

Serving Nephi, UT and surrounding areas

Free estimates

Emergency services offered

Credit card accepted

"Graet job, everything was done exactly the way we expected and they finished it on the estimated time!!! We recommend them and will contract with this company again!!"

+75

Recommended by100%of homeowners

Air Ducts & Vents - Clean

Serving Nephi, UT and surrounding areas

In business since 2023

Free estimates

Emergency services offered

"Hired Diamond Ducts to clean my air ducts and dryer vents and they did an amazing job. They were on time, professional, and answered all of the questions I had in detail. Highly recommend."

Recommended by87%of homeowners

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Showing 1-10 of 44

Heating and Air Conditioning questions, answered by experts

A frosty expansion valve that isn't blowing out cool air is a sure sign that it’s time to replace it. It might also be time to replace the TXV valve if your AC unit switches off soon after turning on or if you have poor airflow in your home.

Troubleshooting common issues with your AC often sheds light on a problem with the compressor. Signs that you need to replace a bad compressor include your AC blowing warm air, short cycling (turning on and off), making strange noises, and blowing less air overall. Since these problems can stem from several areas of your AC, always call a local AC repair team to confirm it's the compressor.

It is normal for the attic to be hotter than the rest of the house in the summer, but only by about 10 or 20 degrees. Attics that aren’t properly insulated or ventilated can reach temperatures of 130 degrees or more which can cause damage to the home’s structure, including the roof, wood framing, and HVAC system.

Yes, a dehumidifier and air conditioner can be used simultaneously in a home. A dehumidifier can bolster an air conditioner’s efficiency. Typically, a dehumidifier is used when the air conditioner alone cannot keep a home’s humidity levels at a comfortable indoor humidity level, which should, ideally, be between 30% and 50%.

A common HVAC rule is that for every 500 to 600 square feet of living space, you need 1 ton of heating or cooling capacity. Now that you know this common rule, you also need to know that it isn’t very accurate, and a dedicated pro wouldn’t use it for your home. If you talk to a pro who won’t or can’t perform a proper Manual J calculation, consider hiring someone more thorough.

The Nephi, UT homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.

See all articles

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•
Jul 9, 2026Jul 9, 2026
Can You Add Central Air to a Baseboard-Heated House?
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May 21, 2026May 21, 2026
12 Air Conditioning Tips for the Summer
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Heat Pump vs. Air Conditioner: What’s the Difference?
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Jul 9, 2026Jul 9, 2026
Pros and Cons of Air-Source Heat Pumps
Air-source heat pumps are an energy-efficient way to heat and cool your home. Learn the pros and cons of this heating method.
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•
Jul 7, 2026Jul 7, 2026
How to Retrofit Air Conditioning in Your Home (Even When You Think It’s Not Possible)
Retrofitting your house for AC is, surprisingly, not too hard. Here’s what you’ll need to consider to make it happen.