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Q: How long will it take to recharge my AC unit?

• <div><p>A home AC unit provides anywhere from one-half to five <a href="https://www.angi.com/articles/hvac-terms-you-need-know.htm">tons of cooling</a> and requires approximately two to four pounds of refrigerant per ton of cooling. At approximately five to 10 minutes to fill one pound of refrigerant, a home that requires three tons of cooling will take about six to 12 pounds of refrigerant and approximately 30 minutes to two hours to completely recharge the unit.</p></div>

Q: Is HVAC the same as AC?

• <div><p>No. HVAC, which stands for heating, ventilation, and air conditioning, includes all of the systems that work together to regulate a building&rsquo;s temperature and humidity levels. In comparison, air conditioners only provide cooling. You can have an air conditioner as part of your HVAC system, but not all HVAC systems include air conditioners. </p></div>

Q: How long should evaporator coils last in HVAC systems?

• <div><p>Evaporator coils in HVAC systems typically last around 10 to 15 years. However, their life span can be longer or shorter based on factors like the frequency of your HVAC system usage, whether regular maintenance is performed, and environmental conditions. Regular maintenance, such as HVAC system cleaning and coil inspection, can extend the durability and efficiency of your evaporator coil.</p></div>

Q: What is a dual evaporator coil?

• <div><p>A dual evaporator coil is a specific design that allows the AC system to cool different compartments at different levels. It&rsquo;s usually seen in refrigerators and similar appliances, but not in whole-house air conditioning systems. Talk with your AC technician about the best uses for a dual evaporator coil.</p></div>

Q: Can mini-splits replace central air?

• <div><p>Yes, a mini split AC system can replace central air&mdash;and quite easily, too. Since mini splits don&rsquo;t require ductwork, homeowners can convert their central air system to a mini split to save money and energy. Consult with an HVAC professional to learn more about the process of replacing your central air with a mini split. </p></div>

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Verified Reviews for Heating And Air Conditioning Service pros in Lennox, SD

*The Angi rating for Heating And Air Conditioning Service companies in Lennox, SD 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 Lennox, SD 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 08, 2025

Reviewed in December 2023
Very professional, very friendly and easy to work with! He did a great job spraying my yard at home and my camper up in Madison. Highly recommend Ace Pest Control for all your pest control needs!
Ace Pest Control, LLC
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Reviewed in October 2022
We had a problem with a couple of our oven burners going to high heat when set on low and Home Warranty Inc. was contacted to make a claim. They said to use anyone but Doug's Appliance. A technician came out from another company and said due to the age of the oven and the cost of parts it wasn't...
Home Warranty Inc
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Reviewed in January 2017
They were prompt! That's the only good thing I can say. We called on a Sunday night, and they came out the next morning, December 19th. On that day, the guy was there about 1/2 an hour, checking a few things out. In the end though, he found nothing wrong, and just reset the rollout switch, and...
Prairie Sons Inc
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Reviewed in June 2015
First, $324 seems like a lot of money for a recharge, but it was for about 3 pounds of coolant and the service call fee. I believe that to be a fair price in this market. Jason arrived in the middle of the 3-hr appointment window, was very courteous, professional and just plain nice. He...
Standard Heating & Air Conditioning Inc
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Reviewed in November 2014
We contacted the recommended company about heating coils and will meet with them next week.
PATES ROOFING
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Reviewed in August 2013
Chris, the owner of Dell's Plumbing, did not know very much about pool heaters so he had me wait until the next day to his father was done with another job. When his father came he and Chris tested the heater and figured out what was wrong with it. It was an easy fix, so they just told us what...
Dells Plumbing
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Reviewed in July 2013
We could not find anybody that could do the repair. They would work on it and charge us a lot and it still did not work. I called Thorson heating and air and they sent out Jackie. She immediately saw the problems and went to work and worked very hard to do it right. The air conditioning now...
Thorson Heating & Air Conditioning
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Reviewed in June 2013
I used to be a loyal customer of Auto Service Company (now Kendall Auto). I will never, ever set foot in Kendall again! I brought my vehicle in for service to fix the driver side widow. Vehicle came out fixed, but the heated seats were not working now where there were when the rig went in. ...
Kendall Auto
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Reviewed in March 2013
They are awesome. The price was reasonable. He was very honest and fair. He does the work on time. He realized that he had misquoted and then he honored the quote. They did a really good job. I had to make half payment upfront. He is very personable. I got a quote from AET for the same job and...
Spencer's Contracting
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Reviewed in March 2012
We literally paid this company $120.00 to do NOTHING at all. Our central air unit had quit functioning and we called Howe's to come take a look at it and let us know what it would cost to repair it. We made an appointment and patiently waited for the technician to arrive. He was almost one hour...
Howe, Inc.
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Find Heating and air conditioning pros in Lennox

Haugan Heating and Air Conditioning, Inc.

New on AngiNew on Angi

•Approved Pro

Haugan Heating and Air Conditioning, Inc.

New on AngiNew on Angi

•Approved Pro

60 years of experience

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. Give us a call today, we look forward to earning your business!

Johnsen Heating & Cooling

5.00(

)

•Approved Pro

Johnsen Heating & Cooling

5.00(

)

•Approved Pro

Customers say: Quick response

Recommended by 100% of Angi customers

7 years of experience

"Very good high quality company they work hard to please customer."

John G on April 2018

"Very good high quality company they work hard to please customer."

John G on April 2018

Neighborhood Handyman LLC

5.00(

)

•Approved Pro

Neighborhood Handyman LLC

Customers say: Quick response

75 local quotes requested

Free onsite estimate

In Business Since 2024 Handyman service that focuses on smaller projects and home maintenance items. We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

"Jared was here and installed laminate (lvp) flooring in our kitchen and entryway. We are so greatful he was available on such short notice. His fees were very reasonable, he arrived at the agreed upon time, and finished the project in record time (as to how long it would have taken us beginners diy). We would recommend him to anyone needing work done and we will definitely hire him again for any future projects we have. Thank you Jared"

Julie S on November 2025

"Jared was here and installed laminate (lvp) flooring in our kitchen and entryway. We are so greatful he was available on such short notice. His fees were very reasonable, he arrived at the agreed upon time, and finished the project in record time (as to how long it would have taken us beginners diy). We would recommend him to anyone needing work done and we will definitely hire him again for any future projects we have. Thank you Jared"

Julie S on November 2025

Sentri Homes

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Sentri Homes

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456 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.

MJ aire

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MJ aire

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1 years of experience

MJ Aire specializes in service/repair, install, and maintaining any heating or cooling systems. We also specialize in humidifier installs, basement finishes, garage heaters and much more. Our mission is to be extremely efficient along with lower prices for our customers satisfaction!

Vans heating and cooling

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Vans heating and cooling

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Furnace and air conditioning repair and service.

Aydens concrete

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Aydens concrete

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Free onsite estimate

Services included pouring and finishing driveways, patios, front walks, fix or repair cracked concrete I have been in this line of work for 2 years now and I'm a small business owner who is still in high-school. I know I ant got a lot of experience but I can surprise you I don't charge a lot because I enjoy doing the work so much

DR. HVAC

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DR. HVAC

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Mechanical contractor in the Sioux Falls area. Call us for all of your HVAC needs.

NewAir Heating and Cooling LLC

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NewAir Heating and Cooling LLC

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- Specialize in replacement of your old furnace and AC - new construction - garage heaters Call for a no hassle FREE estimate 605-660-4092

Midwestern Mechanical, Inc.

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Midwestern Mechanical, Inc.

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Get same-day plumbing & HVAC services in Sioux Falls by calling Midwestern Mechanical, Inc. Fire protection solutions are also available.

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Showing 1-10 of 57

Heating and Air Conditioning questions, answered by experts

A home AC unit provides anywhere from one-half to five tons of cooling and requires approximately two to four pounds of refrigerant per ton of cooling. At approximately five to 10 minutes to fill one pound of refrigerant, a home that requires three tons of cooling will take about six to 12 pounds of refrigerant and approximately 30 minutes to two hours to completely recharge the unit.

No. HVAC, which stands for heating, ventilation, and air conditioning, includes all of the systems that work together to regulate a building’s temperature and humidity levels. In comparison, air conditioners only provide cooling. You can have an air conditioner as part of your HVAC system, but not all HVAC systems include air conditioners.

Evaporator coils in HVAC systems typically last around 10 to 15 years. However, their life span can be longer or shorter based on factors like the frequency of your HVAC system usage, whether regular maintenance is performed, and environmental conditions. Regular maintenance, such as HVAC system cleaning and coil inspection, can extend the durability and efficiency of your evaporator coil.

A dual evaporator coil is a specific design that allows the AC system to cool different compartments at different levels. It’s usually seen in refrigerators and similar appliances, but not in whole-house air conditioning systems. Talk with your AC technician about the best uses for a dual evaporator coil.

Yes, a mini split AC system can replace central air—and quite easily, too. Since mini splits don’t require ductwork, homeowners can convert their central air system to a mini split to save money and energy. Consult with an HVAC professional to learn more about the process of replacing your central air with a mini split.

The Lennox, SD 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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•
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How Much Does a Whole-House Humidifier Cost? [2025 Data]
Whole-house humidifier costs vary based on the type and size of the unit, along with other factors. The price might be worth it for people living in dry regions.
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When your HVAC system is acting up, it could be the blower motor to blame. See how much blower motor replacement costs and what impacts the price here.
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What Is a Heat Pump and How Does It Work?
If you’re thinking about an alternative to a traditional HVAC system, you may want to consider a heat pump. Read on for more about heat pump systems.
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Nov 7, 2025Nov 7, 2025
How to Restart Your Boiler: 5 Steps to a Safe Reset
Learn how to reset your boiler safely with our comprehensive guide. Don't let heating issues disrupt your comfort this winter.
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Nov 6, 2025Nov 6, 2025
5 Central Humidifier Questions to Ask a Pro
A central humidifier can make dry winter air more comfortable indoors. Before your installation, discuss these whole-house humidifier questions with a pro.