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!
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!
At Michael Bonsby Heating & Air Conditioning, LLC, we're a well established business with over 25 years of HVAC experience and expertise. The customer experience is paramount, and your preferences and priorities are always our first concern. We're very timely with our work and always pay attention to detail. We invite you to give us a call and speak with one of our consultants. Anytime, day or night, we are always available to answer questions, and offer ideas.
"Gavin Otto provide an excellent service and very customer focused."
Marcos D on December 2024
At Michael Bonsby Heating & Air Conditioning, LLC, we're a well established business with over 25 years of HVAC experience and expertise. The customer experience is paramount, and your preferences and priorities are always our first concern. We're very timely with our work and always pay attention to detail. We invite you to give us a call and speak with one of our consultants. Anytime, day or night, we are always available to answer questions, and offer ideas.
"Gavin Otto provide an excellent service and very customer focused."
Marcos D on December 2024
Horizon Services (MD), LLC, is the regions largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey and Northeastern Maryland. After a quarter of a century in business, Horizon Services (MD), LLC, remains fully committed to setting the industry standard for customer service, installation and focusing on things that are important to busy homeowners.
"Quick service"
Charles P on May 2025
Horizon Services (MD), LLC, is the regions largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey and Northeastern Maryland. After a quarter of a century in business, Horizon Services (MD), LLC, remains fully committed to setting the industry standard for customer service, installation and focusing on things that are important to busy homeowners.
"Quick service"
Charles P on May 2025
American Chimney Contractor Near Me LLC & American HVAC Contractors MD have partnered to bring you the ultimate one-stop solution for all your home comfort needs in Maryland, Virginia, and D.C. We've combined our expertise to offer a comprehensive range of services, allowing you to schedule a single appointment for multiple needs. We are committed to providing top-notch service and ensuring your complete satisfaction. Our services include: Chimney & Fireplace Services: -Chimney Cleaning: Professional sweeping to remove creosote, soot, and blockages, preventing chimney fires and improving efficiency. -Chimney Inspection: Thorough inspection of your chimney's structure, flue, and cap to identify potential hazards and needed repairs. -Chimney Repair: From minor mortar fixes to major structural repairs, we handle all types of chimney damage. -Chimney Relining: Installation of new liners (stainless steel, clay, or cast-in-place) to restore the safety and integrity of your flue. -Fireplace Installations: Expert installation of new fireplaces, stoves, and inserts to enhance your home's ambiance and warmth. -Dryer Vent Cleaning & Re-routing: Professional cleaning to remove lint buildup, reduce fire risk, and improve dryer efficiency. We also offer re-routing services for optimal performance. HVAC Services: -AC System Installation: Professional installation of new, high-efficiency air conditioning systems to keep your home cool and comfortable. -AC System Repair: Fast and reliable repairs for all makes and models of AC units, addressing issues from refrigerant leaks to electrical problems. -AC System Maintenance: Routine tune-ups to maximize your system's performance, extend its lifespan, and prevent costly breakdowns. -Heating System Installation: Expert installation of furnaces, boilers, and heat pumps for reliable warmth throughout the colder months. -Heating System Repair: Quick and efficient repairs to restore heat and safety to your home, no matter the issue. -Heating System Maintenance: Regular check-ups to ensure your heating system operates safely and efficiently all winter long. -Ductless Heating and AC Services: Installation, repair, and maintenance of ductless mini-split systems for zoned comfort savings.
"I am impressed with the services I got from American Contractor Near Me LLC Their team was friendly and professional, and did a great job installing the chimney. They worked quickly and thoroughly, and they left my property clean. I was shocked at how much it changed! Their prices were fair, and the work they did was excellent. Do not be afraid to hire them to work on your chimney. They are the best at what they do!"
Adam H on July 2025
American Chimney Contractor Near Me LLC & American HVAC Contractors MD have partnered to bring you the ultimate one-stop solution for all your home comfort needs in Maryland, Virginia, and D.C. We've combined our expertise to offer a comprehensive range of services, allowing you to schedule a single appointment for multiple needs. We are committed to providing top-notch service and ensuring your complete satisfaction. Our services include: Chimney & Fireplace Services: -Chimney Cleaning: Professional sweeping to remove creosote, soot, and blockages, preventing chimney fires and improving efficiency. -Chimney Inspection: Thorough inspection of your chimney's structure, flue, and cap to identify potential hazards and needed repairs. -Chimney Repair: From minor mortar fixes to major structural repairs, we handle all types of chimney damage. -Chimney Relining: Installation of new liners (stainless steel, clay, or cast-in-place) to restore the safety and integrity of your flue. -Fireplace Installations: Expert installation of new fireplaces, stoves, and inserts to enhance your home's ambiance and warmth. -Dryer Vent Cleaning & Re-routing: Professional cleaning to remove lint buildup, reduce fire risk, and improve dryer efficiency. We also offer re-routing services for optimal performance. HVAC Services: -AC System Installation: Professional installation of new, high-efficiency air conditioning systems to keep your home cool and comfortable. -AC System Repair: Fast and reliable repairs for all makes and models of AC units, addressing issues from refrigerant leaks to electrical problems. -AC System Maintenance: Routine tune-ups to maximize your system's performance, extend its lifespan, and prevent costly breakdowns. -Heating System Installation: Expert installation of furnaces, boilers, and heat pumps for reliable warmth throughout the colder months. -Heating System Repair: Quick and efficient repairs to restore heat and safety to your home, no matter the issue. -Heating System Maintenance: Regular check-ups to ensure your heating system operates safely and efficiently all winter long. -Ductless Heating and AC Services: Installation, repair, and maintenance of ductless mini-split systems for zoned comfort savings.
"I am impressed with the services I got from American Contractor Near Me LLC Their team was friendly and professional, and did a great job installing the chimney. They worked quickly and thoroughly, and they left my property clean. I was shocked at how much it changed! Their prices were fair, and the work they did was excellent. Do not be afraid to hire them to work on your chimney. They are the best at what they do!"
Adam H on July 2025
Handyman serving the Washington Metro Area since 2010. Big or small we really do it all. From finishing a basement to installing a ceiling fan we've got you covered with meticulous work, integrity, and of course friendliness.
"Perfectly!"
Charles B on June 2024
Handyman serving the Washington Metro Area since 2010. Big or small we really do it all. From finishing a basement to installing a ceiling fan we've got you covered with meticulous work, integrity, and of course friendliness.
"Perfectly!"
Charles B on June 2024
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!
"We had the pleasure of meeting Corey tonight. He found the leak in our AC. Showed us where it was and what it meant as far as the AC went. He explained in detail the several options we had as far as fixing it or replacing the unit. He even showed us where and what he found. Very polite and professional. The ladies I talked to at the office was also very polite and professional. I highly recommend this company."
Donna S on June 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!
"We had the pleasure of meeting Corey tonight. He found the leak in our AC. Showed us where it was and what it meant as far as the AC went. He explained in detail the several options we had as far as fixing it or replacing the unit. He even showed us where and what he found. Very polite and professional. The ladies I talked to at the office was also very polite and professional. I highly recommend this company."
Donna S on June 2025
When Glenmont Heating & Air Conditioning was founded 28 years ago, we had one goal in mind; providing area families, and businesses with solutions that fit their lifestyles and needs, as well as their wallets. If you have any questions about heating and air conditioning maintenance, a new HVAC system, or are looking into installing a more energy efficient system, Glenmont Heating and Air is the solution to your needs.
"Summary: Company charged me $1000+ for 2 separate service visits that did not fix my AC unit; technicians and Operations Manager are not truthful about work done; Operatiins Mngr will tell you find another HVAC company when you express dissatisfaction ….I contacted Glenmont Heating and Air Conditioning since my AC unit was not dispensing any cold air. Thermometer was set to 68° however the unit temperature was reading 77-80° (note this was the week of extreme heat wave). On 21Jun2024: Glenmont technician Roderick performed a service call. I spoke to him via phone after the call to which he told me he added refrigerant to the system. This did not fix the issue and the unit continued to not dispense cold air with the thermometer reaching 77-80° despite being set to 68°. I was charged $119 for this work. Operating Manager Tim Schindle is contradicting what the tech said and claims Roderick did not add any refrigerant. I again called Glenmont HVAC for a second service appointment. This technician claimed the coil needed to be cleaned. The second technician (Eric) then falsely reported on his report the unit temperature dropped to 68° when he left when I have photographic evidence showing the temperature in the high 70s. I waited about 24hrs as instructed for the thermostat to drop and it never did and the unit continued to not dispense cool air. I then called a supervisor (don’t recall name) who essentially told me due to the extreme temperatures everyone was experiencing HVAC issues and did not recommend any follow up service. I then had several back/forth emails with Operations manger Tim Schindler to notify him after 2 separate service visits, my air conditioning was not fixed. In the end he told me, and I quote “my system is old…we don’t know the maintenance history…it is best for both of us to find another HVAC company. He did however bill me $964 for the second service visit, which did not fix my issue. I ended up having to call another HVAC company who diagnosed the problem as a compression failure/ replaced the unit and now have cold air blowing. The second HVAC company did not understand why the 2nd technician from Glenmont Heating/Air Conditioning was changing coils and said this was not necessary to do. Second HVAC company showed me the reading of the compressor unit to which I could see no charge was registering, essentially the compressor was no longer working which was the root cause of my issue. In conclusion, I’m disappointed with Glenmont HVAC and feel they sent incompetent technicians who falsified their work. When I complained to the company and expressed my disappointment with their work (or lack there of) they told me to seek other HVAC company without fixing my AC unit but charged me $1000+. Poor business acumen and highly unethical company that needs to be held accountable for cheating customers and not performing quality work."
T C on August 2024
When Glenmont Heating & Air Conditioning was founded 28 years ago, we had one goal in mind; providing area families, and businesses with solutions that fit their lifestyles and needs, as well as their wallets. If you have any questions about heating and air conditioning maintenance, a new HVAC system, or are looking into installing a more energy efficient system, Glenmont Heating and Air is the solution to your needs.
"Summary: Company charged me $1000+ for 2 separate service visits that did not fix my AC unit; technicians and Operations Manager are not truthful about work done; Operatiins Mngr will tell you find another HVAC company when you express dissatisfaction ….I contacted Glenmont Heating and Air Conditioning since my AC unit was not dispensing any cold air. Thermometer was set to 68° however the unit temperature was reading 77-80° (note this was the week of extreme heat wave). On 21Jun2024: Glenmont technician Roderick performed a service call. I spoke to him via phone after the call to which he told me he added refrigerant to the system. This did not fix the issue and the unit continued to not dispense cold air with the thermometer reaching 77-80° despite being set to 68°. I was charged $119 for this work. Operating Manager Tim Schindle is contradicting what the tech said and claims Roderick did not add any refrigerant. I again called Glenmont HVAC for a second service appointment. This technician claimed the coil needed to be cleaned. The second technician (Eric) then falsely reported on his report the unit temperature dropped to 68° when he left when I have photographic evidence showing the temperature in the high 70s. I waited about 24hrs as instructed for the thermostat to drop and it never did and the unit continued to not dispense cool air. I then called a supervisor (don’t recall name) who essentially told me due to the extreme temperatures everyone was experiencing HVAC issues and did not recommend any follow up service. I then had several back/forth emails with Operations manger Tim Schindler to notify him after 2 separate service visits, my air conditioning was not fixed. In the end he told me, and I quote “my system is old…we don’t know the maintenance history…it is best for both of us to find another HVAC company. He did however bill me $964 for the second service visit, which did not fix my issue. I ended up having to call another HVAC company who diagnosed the problem as a compression failure/ replaced the unit and now have cold air blowing. The second HVAC company did not understand why the 2nd technician from Glenmont Heating/Air Conditioning was changing coils and said this was not necessary to do. Second HVAC company showed me the reading of the compressor unit to which I could see no charge was registering, essentially the compressor was no longer working which was the root cause of my issue. In conclusion, I’m disappointed with Glenmont HVAC and feel they sent incompetent technicians who falsified their work. When I complained to the company and expressed my disappointment with their work (or lack there of) they told me to seek other HVAC company without fixing my AC unit but charged me $1000+. Poor business acumen and highly unethical company that needs to be held accountable for cheating customers and not performing quality work."
T C on August 2024
THE MOST TRUSTED Fall in Love With Your Home All Over Again! SCHEDULE HOME REMODELING SERVICES IN GAITHERSBURG, MD & SURROUNDING AREAS. Has your home turned from a dream into a nightmare? If it needs a growing list of repairs and updates, turn to Global Renovations, LLC in Gaithersburg, MD. We offer a variety of commercial and home remodeling services that will help you love your property again. Call today to learn more about our affordable rates. We offer bathroom and kitchen remodeling, basement remodeling, flooring, painting, drywall repair, handyman services, Power wash, carpentry, and much more. Please call for more info thanks!
"I look forward to hiring Global Renovations for my projects. They did an exceptional job. Thank you Bridget and David Helms-Betsville, Maryland"
Bridget L on July 2025
THE MOST TRUSTED Fall in Love With Your Home All Over Again! SCHEDULE HOME REMODELING SERVICES IN GAITHERSBURG, MD & SURROUNDING AREAS. Has your home turned from a dream into a nightmare? If it needs a growing list of repairs and updates, turn to Global Renovations, LLC in Gaithersburg, MD. We offer a variety of commercial and home remodeling services that will help you love your property again. Call today to learn more about our affordable rates. We offer bathroom and kitchen remodeling, basement remodeling, flooring, painting, drywall repair, handyman services, Power wash, carpentry, and much more. Please call for more info thanks!
"I look forward to hiring Global Renovations for my projects. They did an exceptional job. Thank you Bridget and David Helms-Betsville, Maryland"
Bridget L on July 2025
**Call us today for a FREE ESTIMATE on Heating or AC system replacements!** With over 19 years of experience, Buric Heating and Air Conditioning is a full service residential heating and cooling company that has offered Ellicott City, MD and its surrounding areas with plenty of jobs well done. By offering straight forward pricing and free estimates on equipment installations or replacements, you can trust that they are the right HVAC professionals for you. Call today for your next appointment!
"They installed our AC system; that went fine. But several years later, when it needed repair. They came out and looked at the problem, and then ghosted me. They didn't return my multiple calls. When I finally got somebody else to come out to look at the problem, they told me that the warranty had just expired on the part that needed replacing. Putting 2 +2 together, Buric ghosted me to run out the clock on my warranty for the repair of the product they installed. Would you ever hire anybody who behaves like that???"
Noam S on June 2022
**Call us today for a FREE ESTIMATE on Heating or AC system replacements!** With over 19 years of experience, Buric Heating and Air Conditioning is a full service residential heating and cooling company that has offered Ellicott City, MD and its surrounding areas with plenty of jobs well done. By offering straight forward pricing and free estimates on equipment installations or replacements, you can trust that they are the right HVAC professionals for you. Call today for your next appointment!
"They installed our AC system; that went fine. But several years later, when it needed repair. They came out and looked at the problem, and then ghosted me. They didn't return my multiple calls. When I finally got somebody else to come out to look at the problem, they told me that the warranty had just expired on the part that needed replacing. Putting 2 +2 together, Buric ghosted me to run out the clock on my warranty for the repair of the product they installed. Would you ever hire anybody who behaves like that???"
Noam S on June 2022
You and your family deserve to receive the best care and the best service. Not every heating & A/C company gives you the quality people and care that Presidential does. We offer 40 Years of Award-Winning Quality People, Quality Installation, and Quality Service. Delivering this quality service and care for your home is our commitment to you! Family-owned and operated, Presidential specializes in residential and light commercial service and installation throughout MD, VA & DC. Ask us about our system replacement specials and The Advantage Maintenance Plan for preferred VIP service. Presidential has been awarded the Carrier Factory Authorized Dealer Award and is a member of the ACCA (Air Conditioning Contractors of America) and the Quality One service network.
"Came for routine maintenance and estimate for a humidifier. The customer service was excellent, from scheduling to the job itself. Glad I found them and expect to now be a long term customer."
Michael J on June 2025
You and your family deserve to receive the best care and the best service. Not every heating & A/C company gives you the quality people and care that Presidential does. We offer 40 Years of Award-Winning Quality People, Quality Installation, and Quality Service. Delivering this quality service and care for your home is our commitment to you! Family-owned and operated, Presidential specializes in residential and light commercial service and installation throughout MD, VA & DC. Ask us about our system replacement specials and The Advantage Maintenance Plan for preferred VIP service. Presidential has been awarded the Carrier Factory Authorized Dealer Award and is a member of the ACCA (Air Conditioning Contractors of America) and the Quality One service network.
"Came for routine maintenance and estimate for a humidifier. The customer service was excellent, from scheduling to the job itself. Glad I found them and expect to now be a long term customer."
Michael J on June 2025
Yes, a once-a-year tune-up keeps the system efficient and helps it last longer. During the visit, a technician cleans coils, checks electrical connections, and swaps or cleans the filter. Catching small issues now stops bigger, pricier failures later, so that a quick appointment saves money and stress over the life of the unit.
Changing your AC filter every 30 days is necessary to maintain optimal performance and high indoor air quality. Regular filter replacement prevents dust buildup, ensures efficient airflow, and protects the system from stress that could lead to costly repairs. This disciplined maintenance routine not only boosts energy efficiency but also prolongs the lifespan of your unit by safeguarding its critical components.
An HVAC service plan is worth the cost, especially if you forget to schedule maintenance on your own. A service plan locks in yearly (or twice-yearly) visits, allowing a professional to identify small problems early, clean key components, and maintain energy efficiency. Many plans also include minor repairs or priority scheduling, which can pay for themselves if an unexpected issue pops up.
In a pre-season service visit, your technician gives your system a top-to-bottom check before peak season hits. Expect a filter change, thermostat test, condenser-line flush, electrical-connection check, and coil cleaning. They also tighten loose parts and make minor adjustments so the unit fires up without surprises when temperatures swing. That quick tune-up cuts the risk of mid-season breakdowns and keeps energy use in line.