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Average homeowner rating star icon4.4
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Verified heating and air conditioning services reviews

Heating and air conditioning pros in Mont Alto

Avatar for Holtzople Heating, Air Conditioning, & Electrical Services
Holtzople Heating, Air Conditioning, & Electrical Services
16424 Old Frederick Rd
4.87(
181
)
Approved Pro
Holtzople Heating, Air Conditioning, & Electrical Services
16424 Old Frederick Rd
4.87(
181
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
50 local quotes requested

Holtzople is a leading HVAC company in Frederick, Carroll, and Washington counties in Maryland, as well as Adams and small parts of Franklin & York counties in Pennsylvania, featuring all the top brands in the Heating and Cooling industry, such as Trane, Bryant, Lennox, Carrier, ClimateMaster, WaterFurnace, and more. We recently added an electrical department to our services, making us your one-stop shop for HVAC and electrical needs. Quality is Not Expensive, It's Priceless!

"From Josh Radford our comfort consultant to our install crew of Shane, Jake and JT everything was top notch!"

Vickie S on April 2025

Holtzople is a leading HVAC company in Frederick, Carroll, and Washington counties in Maryland, as well as Adams and small parts of Franklin & York counties in Pennsylvania, featuring all the top brands in the Heating and Cooling industry, such as Trane, Bryant, Lennox, Carrier, ClimateMaster, WaterFurnace, and more. We recently added an electrical department to our services, making us your one-stop shop for HVAC and electrical needs. Quality is Not Expensive, It's Priceless!

"From Josh Radford our comfort consultant to our install crew of Shane, Jake and JT everything was top notch!"

Vickie S on April 2025


Avatar for Harrell's Services
Harrell's Services
18809 Burnside Bridge Rd
5.00(
4
)
Approved Pro
Harrell's Services
18809 Burnside Bridge Rd
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
16 local quotes requested

We are a small family owned Heating, Ventilation, and Air Conditioning (HVAC) company located in Sharpsburg, MD. The business was started in 1989 under the name of RW Harrell's Pump Service Inc. when Diane Harrell and Ronnie Harrell purchased a well pump and water system business from a gentleman that was retiring. Ronnie had worked in the HVAC field from the time he had graduated from high school so it was natural to add HVAC to the services that this new company would offer. Ronnie and Diane built the company by word of mouth and continue to grow the company in this manner. Additional DBA - Harrell's Services. Additional fax - 928-492-8004

We are a small family owned Heating, Ventilation, and Air Conditioning (HVAC) company located in Sharpsburg, MD. The business was started in 1989 under the name of RW Harrell's Pump Service Inc. when Diane Harrell and Ronnie Harrell purchased a well pump and water system business from a gentleman that was retiring. Ronnie had worked in the HVAC field from the time he had graduated from high school so it was natural to add HVAC to the services that this new company would offer. Ronnie and Diane built the company by word of mouth and continue to grow the company in this manner. Additional DBA - Harrell's Services. Additional fax - 928-492-8004


Avatar for McCrea Heating & Air Conditioning Services of PA
McCrea Heating & Air Conditioning Services of PA
151 Commerce Ave
4.78(
306
)
Approved Pro
McCrea Heating & Air Conditioning Services of PA
151 Commerce Ave
4.78(
306
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
39 local quotes requested

McCrea is a family owned business that has served our area since 1936. Financing and rebates are available on Trane systems installed by McCrea. Resistrictions apply and these are limited time offers call for details. "Its hard to stop a Trane"

"We bought a new construction and McCrea installed the HVAC. Home inspection identified the heat pump was not working in Oct. 2020. McCrea identified it was due to leaking refrigerants and promise fixed the issue. Our electric bill was extremely high the following two months and the heat pump was not cooling in Spring 2021. McCrea sent technician and again repaired the system. Bought their maintenance plan. We had 4+ repairs plus regular tune up in the past two years. Last week the heat pump stopped cooling again. We are out of labor warranty and charge us with $89 diagnostic cost after membership discount. It took three days for them to send someone to check while we suffering 90F in our house. They identified the compressor dead and need replacement. They charge $1900 for labor after membership discount. Most likely cause of the compressor failure is "suicide" with assistance. Low refrigerant at beginning and over change in later repairs likely contributed the short life."

Wei X on July 2023

McCrea is a family owned business that has served our area since 1936. Financing and rebates are available on Trane systems installed by McCrea. Resistrictions apply and these are limited time offers call for details. "Its hard to stop a Trane"

"We bought a new construction and McCrea installed the HVAC. Home inspection identified the heat pump was not working in Oct. 2020. McCrea identified it was due to leaking refrigerants and promise fixed the issue. Our electric bill was extremely high the following two months and the heat pump was not cooling in Spring 2021. McCrea sent technician and again repaired the system. Bought their maintenance plan. We had 4+ repairs plus regular tune up in the past two years. Last week the heat pump stopped cooling again. We are out of labor warranty and charge us with $89 diagnostic cost after membership discount. It took three days for them to send someone to check while we suffering 90F in our house. They identified the compressor dead and need replacement. They charge $1900 for labor after membership discount. Most likely cause of the compressor failure is "suicide" with assistance. Low refrigerant at beginning and over change in later repairs likely contributed the short life."

Wei X on July 2023


Avatar for Waggener Mechanical, LLC
Waggener Mechanical, LLC
602 Cricket Lane
5.00(
4
)
Approved Pro
Waggener Mechanical, LLC
602 Cricket Lane
5.00(
4
)
Approved Pro
Customers say: Quick response
1 years of experience
Free onsite estimate

Waggener Mechanical LLC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 9 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"Our whole furnace broke and in within 48 hours we had a brand new one for a great price and ready to go before the winter. They worked quickly and efficiently especially with me having a little one running around. I would highly recommend them to anyone. Having a huge appliance break right before the cold weather comes was stressful and they did their best to make sure we didn't go without heat in our old house. Thank you for taking care of us and 5 stars hands down !"

Crystal W on November 2024

Waggener Mechanical LLC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 9 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"Our whole furnace broke and in within 48 hours we had a brand new one for a great price and ready to go before the winter. They worked quickly and efficiently especially with me having a little one running around. I would highly recommend them to anyone. Having a huge appliance break right before the cold weather comes was stressful and they did their best to make sure we didn't go without heat in our old house. Thank you for taking care of us and 5 stars hands down !"

Crystal W on November 2024


Avatar for 717 Home Comfort LLC
717 Home Comfort LLC
1317 High Mountain Rd
5.00(
5
)
Approved Pro
717 Home Comfort LLC
1317 High Mountain Rd
5.00(
5
)
Approved Pro
Free onsite estimate
Emergency services offered

With over 10 years experience in the field, 717 Home Comfort 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 customers interests and make their concerns the basis of our business.

"Great work! Was here on time and was super friendly. Pricing was reasonable and fair."

Courtney V on April 2025

With over 10 years experience in the field, 717 Home Comfort 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 customers interests and make their concerns the basis of our business.

"Great work! Was here on time and was super friendly. Pricing was reasonable and fair."

Courtney V on April 2025


Miles Yellott
110 South Charles Street
5.00(
5
)
Miles Yellott
110 South Charles Street
5.00(
5
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

I’m Miles, and I have been in the electrical industry for 4 years. I have completed high school trade schooling and 4 year technical schooling. My best skillset is in residential wiring, including new construction wiring, remodels, troubleshooting, electrical panels, fixture installation, and much more. I’m also skilled in commercial work, such as bending and installing conduit, running MC cable, and working on three phase power systems. I work independently at a company but I enjoy doing work for people on my days off or in my free time. I have multiple clients that I’ve been working with for years, they’ve become more of friends than just people I work for. I enjoy my work and the people it allows me to get to know and help.

"Perfect. What a wonderful gentleman."

Mel M on February 2025

I’m Miles, and I have been in the electrical industry for 4 years. I have completed high school trade schooling and 4 year technical schooling. My best skillset is in residential wiring, including new construction wiring, remodels, troubleshooting, electrical panels, fixture installation, and much more. I’m also skilled in commercial work, such as bending and installing conduit, running MC cable, and working on three phase power systems. I work independently at a company but I enjoy doing work for people on my days off or in my free time. I have multiple clients that I’ve been working with for years, they’ve become more of friends than just people I work for. I enjoy my work and the people it allows me to get to know and help.

"Perfect. What a wonderful gentleman."

Mel M on February 2025



A&F Service llc
316 Liberty Drive
No reviews
A&F Service llc
316 Liberty Drive
No reviews
22 years of experience

We are a family owned and operated business and treat our customers like family. We stand behind our service with a labor warranty.

We are a family owned and operated business and treat our customers like family. We stand behind our service with a labor warranty.


Climate Correction, LLC
5.00(
9
)
Climate Correction, LLC
5.00(
9
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Whether you need a maintenance check or an emergency repair on a heating or cooling unit, we are available to handle all of your heating, cooling, and ventilation needs. We strive to exceed expectations by ensuring that each of our clients receives individualized service. We will work with you to find HVAC solutions that fit your heating and cooling needs. We will provide you with a full consultation to explain all of your options sot ath you can choose the system that's best for your home or business.

"Mike did an awesome job servicing my house’s central air system. Would absolutely hire him again!"

Ben C on December 2023

Whether you need a maintenance check or an emergency repair on a heating or cooling unit, we are available to handle all of your heating, cooling, and ventilation needs. We strive to exceed expectations by ensuring that each of our clients receives individualized service. We will work with you to find HVAC solutions that fit your heating and cooling needs. We will provide you with a full consultation to explain all of your options sot ath you can choose the system that's best for your home or business.

"Mike did an awesome job servicing my house’s central air system. Would absolutely hire him again!"

Ben C on December 2023


Old Scool Services
4.25(
4
)
Old Scool Services
4.25(
4
)
Customers say: Quick response
4 years of experience

Here at Old Scool Services, we sustain our business on quality and integrity. We are experts in asphalt driveways and are committed to quality from the beginning to the end of your project. We look forward to earning your business.

"Smoothly. Knowledgeable and professional service."

Towanda T on January 2024

Here at Old Scool Services, we sustain our business on quality and integrity. We are experts in asphalt driveways and are committed to quality from the beginning to the end of your project. We look forward to earning your business.

"Smoothly. Knowledgeable and professional service."

Towanda T on January 2024

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Heating and air conditioning services FAQs

Knowing how long your existing HVAC units can last is essential to determine if you need a repair or replacement. Typically, most modern air conditioning units can last between 15 to 20 years, and most furnaces can work properly for 15 to 30 years. If your HVAC system is on the older side and you decide to replace one unit, it might make sense to replace both simultaneously to save on costs and future hassle.

While different HVAC contractors might offer higher or lower prices than competitors, the best time to replace your HVAC system is when customer demand is low. The beginning of summer and the beginning of winter bring the most demand for HVAC systems, so if you can, consider replacing your HVAC units in the early spring or fall. Many HVAC companies offer special off-season coupons that help lower the overall cost.  

The average cost to hire an HVAC contractor is between $50 and $150 per hour if charging hourly. However, some HVAC contractors will charge a flat fee by the type of service they are performing—for example, an inspection can cost between $150 to $500. Keep in mind that emergency repairs—which are made after business hours or around major holidays—generally cost more than scheduled repairs.

Yes, most states require HVAC technicians to be certified, and for good reason. Hiring an unlicensed HVAC technician could lead to poor quality work, costly future expenses, and potential code violations. 

As you browse our pro listings, take note of the “Angi Approved” badge. Angi Approved businesses meet our standards for certification which include: 

  • The owner, principal, or relevant manager passed a criminal background check

  • Required to have applicable state and local licenses

  • Maintain an average star rating of 3.0 or better on our network, if they have at least one review

  • Paying to advertise their services

  • Meeting any other eligibility criteria required by Angi

Keep in mind licensing is different from certifications. A license is a legal requirement to operate a business, while certifications are voluntary.

The average cost of HVAC repairs is around $350. However, that price can be as low as $100 or as high as $2,000 or more, depending on the repair. For example, replacing a capacitor is a relatively inexpensive repair, ranging from $100 to $500. However, a compressor repair is a more expensive repair, ranging from $750 to $2,000.  

The 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.
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Apr 28, 2025
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new furnace blower motor closeup
Apr 29, 2025
Apr 29, 2025
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.
A woman covered in a blanket reading a book
Apr 23, 2025
Apr 23, 2025
Whether you’ve lost heat or your furnace is making strange sounds, stay calm. Use this guide to determine the source of the problem and your next steps.
Bedroom interior with big bed and a sunny window
Apr 25, 2025
Apr 25, 2025
If you’re asking, “Why is my upstairs so hot?” we’re here to help. Read on and learn why it isn’t just poor air circulation causing a toasty top floor.
A woman covered in a blanket drinking some coffee
Apr 22, 2025
Apr 22, 2025
Why are some rooms colder than others? If your living room is toasty but the bedroom is freezing, here are a few reasons why and how to fix it.
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