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TRUSTED BY HANCOCK, MD HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon68
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Hancock

Avatar for Holtzople Heating, Air Conditioning, & Electrical Services

Holtzople Heating, Air Conditioning, & Electrical Services

4.94(
177
)
Approved Pro

Holtzople Heating, Air Conditioning, & Electrical Services

4.94(
177
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
24 years of experience

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!

"Doug the technician did a great job replacing a broken switch in the kitchen. He was friendly, neat, well knowledge in what was needed to be done. We will use their services again when needed."

Charles S on January 2026

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!

"Doug the technician did a great job replacing a broken switch in the kitchen. He was friendly, neat, well knowledge in what was needed to be done. We will use their services again when needed."

Charles S on January 2026


"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


Markool Heating & Cooling, LLC

4.68(
17
)
Approved Pro

Markool Heating & Cooling, LLC

4.68(
17
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
7 years of experience

Welcome to Markool Heating & Cooling. We proudly provide the highest quality of service and craftsmanship for each aspect of your project. Our depth of knowledge and experience solidify our belief that customer service stands as the highest priority. We eagerly look forward to working with you and making your vision a reality. Give us a call, text, or email today, and let us get started!

"Woke up this morning to my hvac leaking and contacted Markool. I have never used them before and was in a pinch. They fit me right in this morning and were out at my house within 2 hours. The tech stepped in the door and placed covers for his shoes so he did not track in any dirt which was impressive! The tech was very professional and super friendly. Problem was diagnosed and FIXED within an hour. The price was extremely reasonable to the point I was shocked in a good way (expecting a higher price). Anyways, I will most certainly be a returning customer. Thank you Markool Heating Cooling Plumbing."

Chase R on August 2024

Welcome to Markool Heating & Cooling. We proudly provide the highest quality of service and craftsmanship for each aspect of your project. Our depth of knowledge and experience solidify our belief that customer service stands as the highest priority. We eagerly look forward to working with you and making your vision a reality. Give us a call, text, or email today, and let us get started!

"Woke up this morning to my hvac leaking and contacted Markool. I have never used them before and was in a pinch. They fit me right in this morning and were out at my house within 2 hours. The tech stepped in the door and placed covers for his shoes so he did not track in any dirt which was impressive! The tech was very professional and super friendly. Problem was diagnosed and FIXED within an hour. The price was extremely reasonable to the point I was shocked in a good way (expecting a higher price). Anyways, I will most certainly be a returning customer. Thank you Markool Heating Cooling Plumbing."

Chase R on August 2024


Avatar for Harrell's Services

Harrell's Services

5.00(
4
)
Approved Pro

Harrell's Services

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
37 years of experience

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 B & E Services

B & E Services

4.40(
5
)
Approved Pro

B & E Services

4.40(
5
)
Approved Pro
Customers say: Quality work
24 years of experience
Free onsite estimate

B&E Services is a family owned/operated business that serves the four state area for heating and air conditioning. We are able to service and repair all makes and models of central air conditioners, heat pumps, oil/gas/electric furnaces, and geo thermal systems. We are also a Customer Care Dealer for American Standard.

"They did come out the same day and fix the issue, which is why they are not a 1-star overall. They also charged $200 to switch a thermostat wire and change a few configurations on the thermostat, which seems way overpriced to me. I am not sure how much it would have cost to use another company, I know HVAC residential is always an expensive call, but they said $80 on the phone to check it out, he was done in about 30 minutes and I spent $200. You can decide for yourself."

Brandon R on November 2019

B&E Services is a family owned/operated business that serves the four state area for heating and air conditioning. We are able to service and repair all makes and models of central air conditioners, heat pumps, oil/gas/electric furnaces, and geo thermal systems. We are also a Customer Care Dealer for American Standard.

"They did come out the same day and fix the issue, which is why they are not a 1-star overall. They also charged $200 to switch a thermostat wire and change a few configurations on the thermostat, which seems way overpriced to me. I am not sure how much it would have cost to use another company, I know HVAC residential is always an expensive call, but they said $80 on the phone to check it out, he was done in about 30 minutes and I spent $200. You can decide for yourself."

Brandon R on November 2019


Avatar for Michael & Son Services, Inc.

Michael & Son Services, Inc.

3.96(
168
)
Approved Pro

Michael & Son Services, Inc.

3.96(
168
)
Approved Pro
Customers say: Quick response
50 years of experience
Emergency services offered

Michael & Son is a Home services company specializing in Electric, Plumbing, Heating & Air Conditioning & Remodeling! We have been servicing the metropolitan area for over 30 years. Licensed Bonded & Insured. Customer Service is our TOP PRIORITY!

"Job completed on time."

Sherri C on August 2024

Michael & Son is a Home services company specializing in Electric, Plumbing, Heating & Air Conditioning & Remodeling! We have been servicing the metropolitan area for over 30 years. Licensed Bonded & Insured. Customer Service is our TOP PRIORITY!

"Job completed on time."

Sherri C on August 2024


"Excellent, no problems. My car was new the first year I used the service and there has never been any damage during the transports. The men picking up and delivering the car have always been pleasant and cooperative. Both Ely and Guy at United Transport has been highly responsive to my needs. I would highly recommend this company."

CLAUDIA H on October 2021

United Freight of America is your all inclusive transport solution. CONTACT US FOR A QUOTE. please include pick up and Drop off locations and vehicle information

"Excellent, no problems. My car was new the first year I used the service and there has never been any damage during the transports. The men picking up and delivering the car have always been pleasant and cooperative. Both Ely and Guy at United Transport has been highly responsive to my needs. I would highly recommend this company."

CLAUDIA H on October 2021


Avatar for AppliancePartsPros.com

AppliancePartsPros.com

4.73(
287
)

AppliancePartsPros.com

4.73(
287
)
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers

Since 1999, we've helped millions of do-it-yourselfers save money and fix their broken appliances quickly by providing quality appliance parts and free repair advice. We are only an online appliance parts retailer that offers a 365 day warranty and fast shipping. We also offer technical advice and diagnosis totally free 6 days a week. If you are interested in repairing your own appliance, please call us at 1-877-477-7278 or click live chat on our web site. We will help diagnose the problem and provide you with all the necessary information for the repair free of charge. It's better with the Pros!™ Avoid costly service calls - visit us at http://www.appliancepartspros.com

"Beware of shipping issues with this company. Ordered an ice maker installation kit on 10/10/25. Shipping was due no later than 10/20 according to company and FedEx tracking. FedEx tracking showed the package at their facility for 8 days without moving beginning on 10/15. Called FedEx 3 times. Each time they said they cannot find package and I have to contact shipper. Shipper has to make a claim, they will not mark it as lost. Called Appliance Parts Pros twice. Each time they say FedEx has to mark package lost before they will do anything. They also state they have to wait 14 days from them before doing anything because of their contract with FedEx. I don't care about their contract, I want what was ordered and paid for. Just going in circles with them and FedEX. If they shipped after 14 days it would be 22 days from that point, 32 days from the date of order if they shipped it that day. There was a deadline for installing this part before tenants arrive. They did not care, would not m"

Ron R on October 2025

Since 1999, we've helped millions of do-it-yourselfers save money and fix their broken appliances quickly by providing quality appliance parts and free repair advice. We are only an online appliance parts retailer that offers a 365 day warranty and fast shipping. We also offer technical advice and diagnosis totally free 6 days a week. If you are interested in repairing your own appliance, please call us at 1-877-477-7278 or click live chat on our web site. We will help diagnose the problem and provide you with all the necessary information for the repair free of charge. It's better with the Pros!™ Avoid costly service calls - visit us at http://www.appliancepartspros.com

"Beware of shipping issues with this company. Ordered an ice maker installation kit on 10/10/25. Shipping was due no later than 10/20 according to company and FedEx tracking. FedEx tracking showed the package at their facility for 8 days without moving beginning on 10/15. Called FedEx 3 times. Each time they said they cannot find package and I have to contact shipper. Shipper has to make a claim, they will not mark it as lost. Called Appliance Parts Pros twice. Each time they say FedEx has to mark package lost before they will do anything. They also state they have to wait 14 days from them before doing anything because of their contract with FedEx. I don't care about their contract, I want what was ordered and paid for. Just going in circles with them and FedEX. If they shipped after 14 days it would be 22 days from that point, 32 days from the date of order if they shipped it that day. There was a deadline for installing this part before tenants arrive. They did not care, would not m"

Ron R on October 2025


Avatar for Air Doctor LLC - HVAC Specialists

Air Doctor LLC - HVAC Specialists

4.85(
114
)

Air Doctor LLC - HVAC Specialists

4.85(
114
)
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers

New!!! For a limited time, we have 0% financing for 60 months! It is unheard of in the industry ... 5 years! This is a temporary option on financing for April and May for our Champion customers. Give us a call for more information. WHO NEEDS 10 YEARS FINANCING ON A BRAND NEW HEATING AND A/C SYSTEM? We have that available for qualified buyers! We provide heating and air conditioning service for all makes and models of heating & air conditioning equipment. We have had extensive training with many manufacturers like: American Standard, Trane, Bryant, Carrier, Lennex, Goodman & Rheem. I have been in the service industry for over 24 years and take pride in doing a great job. It's important to me to provide the best options for my clients and I'm always happy to explain the process of what work I'm doing and why I recommend it. We have an A+ rating with the Maryland Better Business Bureau. Our installations come with 10 year parts and 10 year labor along with the availability of 10 year financing for qualified buyers. Big purchase, no worries....

"They were absolutely wonderful. They did a great job and were very honest."

Keith and Paula R on May 2022

New!!! For a limited time, we have 0% financing for 60 months! It is unheard of in the industry ... 5 years! This is a temporary option on financing for April and May for our Champion customers. Give us a call for more information. WHO NEEDS 10 YEARS FINANCING ON A BRAND NEW HEATING AND A/C SYSTEM? We have that available for qualified buyers! We provide heating and air conditioning service for all makes and models of heating & air conditioning equipment. We have had extensive training with many manufacturers like: American Standard, Trane, Bryant, Carrier, Lennex, Goodman & Rheem. I have been in the service industry for over 24 years and take pride in doing a great job. It's important to me to provide the best options for my clients and I'm always happy to explain the process of what work I'm doing and why I recommend it. We have an A+ rating with the Maryland Better Business Bureau. Our installations come with 10 year parts and 10 year labor along with the availability of 10 year financing for qualified buyers. Big purchase, no worries....

"They were absolutely wonderful. They did a great job and were very honest."

Keith and Paula R on May 2022


"I had a service contract with them. They were wonderful and did a wonderful job. When my mom had cancer and she was in the hospital and at home I was there to take care of the house. Something was going on it was really hot weather and I called them and they came out immediately when I told them the circumstances I've never used them before from then on I have been using them for 20 years and I was very satisfied."

Judith S on July 2024

Let us tell you how we can improve your indoor air quality, overall comfort level and save you money with the many products we offer. Contact us today.

"I had a service contract with them. They were wonderful and did a wonderful job. When my mom had cancer and she was in the hospital and at home I was there to take care of the house. Something was going on it was really hot weather and I called them and they came out immediately when I told them the circumstances I've never used them before from then on I have been using them for 20 years and I was very satisfied."

Judith S on July 2024

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Heating and Air Conditioning questions, answered by experts

If you have central air conditioning, it’s fine to run your AC all day if that’s what you want—as long as the AC unit is in good condition. But if your AC runs constantly when you don’t want it to, there may be a problem with your system (like the ones we’ve mentioned above). Window AC units and wall air conditioners aren’t as powerful as central AC, so you should only run those kinds of air conditioners for eight to 12 hours at a time.

They can, but it’s not as common. Window AC units are much smaller than whole-house systems and less likely to develop refrigerant leaks or similar issues. As a result, you will rarely need to add a new refrigerant, limiting overcharging problems. However, it’s still important to leave refrigerant management in the hands of professionals when window units need work.

You should only run your dehumidifier in warmer months, such as spring and summer, to get the best performance out of your system. The air gets drier when temperatures drop in the winter months, creating less of a need for a dehumidifier. However, when to run a dehumidifier will depend on your local climate.

Repairing an AC unit is usually more cost-effective than replacing it, but you should consider the age of your system. Most central AC units last around 15 years, and window units last for between eight and 10 years. If your central AC is more than 10 years old or your window AC is over six years old, you should consider replacing the AC unit rather than repairing it. The repair will fix your issue, but you’ll likely save money in the long run by replacing it rather than repairing it only to replace it a few years later.

On a summer day, expect your AC to run between 12 and 16 hours. However, this time frame depends on just how hot it is outside and the comfortable temperature you’re hoping to maintain indoors. Assuming the size of your AC is appropriate for the space you’re trying to cool, it shouldn’t be a problem for it to work this many hours.

The Hancock, MD 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.

What do you need done? We’ll find top pros.
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