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Q: Can a dirty air filter cause a high electric bill?

• <div><p>Yes, a dirty air filter can cause a higher electric bill. That&rsquo;s because clogged filters make it harder for air to flow through your HVAC system, which forces it to work harder and use more energy. According to the <a href="https://www.energy.gov/energysaver/maintaining-your-air-conditioner#:~:text=Replacing%20a%20dirty%2C%20clogged%20filter,in%20the%20air%20conditioner%20itself.">U.S. Department of Energy</a>, replacing dirty filters can save you between 5% and 15% in utility costs.</p></div>

Q: 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>

Q: How much value does a new HVAC unit add to your home?

• <div><p>A new HVAC unit typically adds about <b>$2,500 to $3,000</b> to the value of your home or about 5% to 7% of your home&rsquo;s value. Since a new unit can cost up to or more than $10,000 to install, it&rsquo;s up to you to decide if the upfront cost is worth the added value. Consult a local AC installer to determine next steps. </p></div>

Q: Does flex duct reduce airflow?

• <div><p>When first installed, flex ducts shouldn&rsquo;t cause airflow problems in your home. However, because flex ducts aren&rsquo;t the sturdiest and require extra support, they lose their durability over time and begin to sag, which can inhibit airflow down the road. Also, if your flex ducts aren&rsquo;t tight enough, your HVAC could work twice as hard for the same air pressure. If you&rsquo;re worried about the airflow in your home, a rigid duct may be your best bet.</p></div>

Q: Can you add central air to an older home?

• <div><p>It is possible to add air conditioning to an older home, but it can be very expensive to do so. Expect to pay anywhere from <b>$6,000 to $17,000</b> or more for the ductwork and AC unit. You&rsquo;ll also have to hack into the home&rsquo;s walls and ceilings to add ductwork, which can impact the aesthetics of an old home.</p></div>

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Verified Reviews for Heating And Air Conditioning Service pros in Lone Tree, IA

*The Angi rating for Heating And Air Conditioning Service companies in Lone Tree, IA 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 Lone Tree, IA 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 07, 2025

Reviewed in December 2021
We are very pleased with the work he did. He replaced an old dryer venting line that had completely broken down and was putting a lot of lint out into the inside of our home. It so nice to run the dryer now and not have all that hot moist air and lint going everywhere. Thanks Van
Handyvan
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Reviewed in June 2020
Really nice young man and did what he said he would do. Maybe a bit on the high priced side but they got AC fixed the same day.
Ozark Heating and Cooling
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Reviewed in May 2018
A home we had bought needed radon mitigation to reduce the radon level below the EPA recommended 4 pCi/L level. Being an older home which had been extensively added onto by previous owners, the construction which included approx. 1/3 over a small basement, 1/3 over two separate areas of concrete...
Neighbors Heating Cooling Plumbing & Geothermal
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Reviewed in August 2016
I decided to make the purchase though I did not need all of the equipment. The TRITON 9000 RS Generator/Compressor/Welder machine was what I really had my eye on. I had never seen a machine with so many functions before. The 10,000 gas generator is the machine I needed the most, but the other...
AMP-American Multi-Products
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Reviewed in July 2013
I had gone without water for two weeks, because the plumbers' businesses in my county did not come when they promised, nor would they return calls, nor say why they didn't want the job, nor give any other professional response. But Mike came within hours of my call, from the next county over. ...
Mike's Plumbing and Pump Service
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Reviewed in June 2013
Mike arrived right on time and got started after introductions. He did a thorough job inspecting both buildings for a very reasonable price. He climbed up on the roofs of both inspected gutter chimneys, then around both foundations. Then inside checking both furnaces and AC units. Windows,...
The BrickKicker
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Reviewed in June 2013
Found a used high-efficiency furnace and central air unit for me to purchase, (for which I'm very grateful) picked it up and installed it. Furnace and Central Air are working fine. Only issues I had were that the programmable thermostat that was installed had "faulty" written across it in...
A2Z Heating and Plumbing, INC.
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Reviewed in February 2012
Kevin and Nate first pre-plumbed our drains and well runs before the concrete floor was poured and as soon as the inside was ready for the rough in they came back and worked with us on the locations of everything and talked us through what they would be doing and when. We felt totally...
City Plumbing
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Reviewed in February 2009
Mark the manager and Dave the Mechanic are wonders. They are two honest men. "Only what you need...at a price guaranteed," isn't just a sales come-on. They live by that motto. Dave said, "I've had some success draining/flushing heater cores before. I can't be sure of the results unless I try....
EXHAUST PROS
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Find Heating and air conditioning pros in Lone Tree

Venteicher Heating & Cooling

4.67(

)

•Approved Pro

Venteicher Heating & Cooling

4.67(

)

•Approved Pro

Customers say: Quick response

Recommended by 100% of Angi customers

8 years of experience

Venteicher Heating and Cooling is your one stop shop to get any HVAC project taken care of from routine maintenance and repairs to new construction installations. We offer boiler, geothermal, furnace, air conditioner, ductless mini split, and all other types of system repair and installation services. We are locally owned and operated and take pride in the quality of our work and customer satisfaction that we give every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call 319-936-8284 today to learn more about how we can help you!

"Very professional, competent and friendly!"

Leland W on September 2023

"Very professional, competent and friendly!"

Leland W on September 2023

Springsteen Services LLC

5.00(

)

•Approved Pro

Springsteen Services LLC

Customers say: Quick response

64 local quotes requested

1 years of experience

Here to help you with Handyman and Honey Do Lists such as mowing, gutter cleaning and more.

"Ceiling fans installed correctly, he picked up any trash and provided excellent customer service. Communication was top notch!"

DeAnna T on November 2025

Here to help you with Handyman and Honey Do Lists such as mowing, gutter cleaning and more.

"Ceiling fans installed correctly, he picked up any trash and provided excellent customer service. Communication was top notch!"

DeAnna T on November 2025

Sentri Homes

No reviews yet

Sentri Homes

No reviews yet

390 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.

A&R Services

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A&R Services

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My team and I will cater to all your needs. We have been specializing in doing a variety of things. If you have a question fill free to ask. We have been doing odds and in jobs for over a decade!

M&P Mechanical

5.00(

)

M&P Mechanical

5.00(

)

Customers say: Quick response

Recommended by 100% of Angi customers

Keep your family safe with the right pro! We have combined 20 years experience, with Masters license and insurance. We have the dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has quality experience in this industry, and we make sure our customers are happy before we leave. Call or click to schedule an estimate today!

"Quick painless fix. Will hire again."

Don B on February 2023

"Quick painless fix. Will hire again."

Don B on February 2023

Brandon

No reviews yet

Brandon

No reviews yet

18 years of experience

By hiring me as your handyman, you are choosing a reliable and skilled professional who will provide exceptional service, thorough communication, attention to detail, effective problem-solving, and a commitment to your overall satisfaction. I am confident that I am the right person for the job and look forward to exceeding your expectations.

Maintenance & Fabrication Specialist

No reviews yet

Maintenance & Fabrication Specialist

No reviews yet

Residential, Industrial, Commercial, and Agricultural Repairs Building and Machine/ Equipment Repairs, A/C repairs and troubleshooting Weld Repairs, Custom Fabrication, and Lawn Art Small Remodels this includes drywall, tile, electrical, plumbing, and

At Comfortec we are honored to work for you. When you invite a Comfortec employee into your Northwest Iowa home we will be on time, courteous and professional. Our technicians use carpet mask, protective shoe covers, and drop cloths to prevent your home from having damages caused by our service.

Krell Distributing Co Inc

No reviews yet

Krell Distributing Co Inc

No reviews yet

53 years of experience

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

Showing 1-10 of 44

Heating and Air Conditioning questions, answered by experts

Yes, a dirty air filter can cause a higher electric bill. That’s because clogged filters make it harder for air to flow through your HVAC system, which forces it to work harder and use more energy. According to the U.S. Department of Energy, replacing dirty filters can save you between 5% and 15% in utility costs.

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.

A new HVAC unit typically adds about $2,500 to $3,000 to the value of your home or about 5% to 7% of your home’s value. Since a new unit can cost up to or more than $10,000 to install, it’s up to you to decide if the upfront cost is worth the added value. Consult a local AC installer to determine next steps.

When first installed, flex ducts shouldn’t cause airflow problems in your home. However, because flex ducts aren’t the sturdiest and require extra support, they lose their durability over time and begin to sag, which can inhibit airflow down the road. Also, if your flex ducts aren’t tight enough, your HVAC could work twice as hard for the same air pressure. If you’re worried about the airflow in your home, a rigid duct may be your best bet.

It is possible to add air conditioning to an older home, but it can be very expensive to do so. Expect to pay anywhere from $6,000 to $17,000 or more for the ductwork and AC unit. You’ll also have to hack into the home’s walls and ceilings to add ductwork, which can impact the aesthetics of an old home.

The Lone Tree, IA 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

Lyle Hendriks
•
Nov 24, 2025Nov 24, 2025
How Much Does Window Air Conditioner Repair Cost? [2025 Data]
Factors such as labor and parts impact the final price of repairing a window AC unit. Learn all of the costs associated with window air conditioner repair.
Deane Biermeier
•
Nov 6, 2025Nov 6, 2025
How Much Does a Whole House Air Filtration System Cost? [2025 Data]
Discover the primary whole-house air filtration system cost factors when installing one in your home to help remove airborne contaminants and allergens.
Scott Dylan Westerlund
•
Nov 24, 2025Nov 24, 2025
How Much Does Furnace Control Board Replacement Cost? [2026 Data]
If your furnace is malfunctioning, it could be a faulty control board. Find out what a furnace control board replacement costs for parts, labor, and more.
Taylor Freitas
•
Nov 6, 2025Nov 6, 2025
What Is Forced-Air Heating? Get to Know This Common Home Heating System
Forced-air systems provide a reliable source of warmth for your home, but what is forced-air heating, exactly? Let’s break it down.
Paige Bennett
•
Nov 20, 2025Nov 20, 2025
How to Clean Air Conditioner Coils Like a Pro
Having dirty evaporator and condenser coils works your HVAC system harder than it needs to. Here’s how to clean your air conditioner coils like a pro.
Veronica Sparks
•
Dec 1, 2025Dec 1, 2025
DIY Duct Leakage Test: How to Check Your HVAC System for Leaks
Energy bills rising? Here’s how to perform a DIY duct leakage test to locate any damage in your ductwork and restore your energy-efficient home.