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
Brian B Quick s a well established company in the Washington DC/Baltimore region. We offer over 100 years of experience total on our Team. Our business approach is to make clients lives better; one solution at a time. We have over 50 5 star reviews! Our focus is customer service as well as professionalism. We pride ourselves on integrity at all times. We are a 4th generation Master Plumbing company! No other company can make that claim in the DC Metro area! If tired of the lying; try Brian. Call us for your next job; you will not be disappointed.
"fantastic ! did a great job polite"
Jim I on September 2022
Brian B Quick s a well established company in the Washington DC/Baltimore region. We offer over 100 years of experience total on our Team. Our business approach is to make clients lives better; one solution at a time. We have over 50 5 star reviews! Our focus is customer service as well as professionalism. We pride ourselves on integrity at all times. We are a 4th generation Master Plumbing company! No other company can make that claim in the DC Metro area! If tired of the lying; try Brian. Call us for your next job; you will not be disappointed.
"fantastic ! did a great job polite"
Jim I on September 2022
Contact Kitchen and Bath Shop - Frederick today to make your home shine! We offer general, kitchen, bathroom, and basement remodeling services. Let us transform your space!
Contact Kitchen and Bath Shop - Frederick today to make your home shine! We offer general, kitchen, bathroom, and basement remodeling services. Let us transform your space!
Here at Best Homes, our company is based on the belief that our customers' satisfaction is of the utmost importance. Our team is driven to meet your needs with professionalism, creativity, and efficiency. Established 2005. Owner: Jonathan Perez Office Manager: Paige Marie Campbell Project Manager: Jefry Perez
"Basement Project We absolutely love our new basement! I was very nervous when selecting the contractor for this job. I interviewed three contractors for the job, all seem very decent, but what set Best Home apart was Jeff Segovia. He designed the whole layout of our basement (we love it) and oversaw the entire project from beginning to end. The construction crews were very polite and friendly. Best Home did an excellent job and very flexible with many changes I had and they completed the job on time (took 3 months and exactly 1 week)which was amazing. I am actually hiring them again for additional projects. I highly recommend Best Homes!"
Jesita B on August 2024
Here at Best Homes, our company is based on the belief that our customers' satisfaction is of the utmost importance. Our team is driven to meet your needs with professionalism, creativity, and efficiency. Established 2005. Owner: Jonathan Perez Office Manager: Paige Marie Campbell Project Manager: Jefry Perez
"Basement Project We absolutely love our new basement! I was very nervous when selecting the contractor for this job. I interviewed three contractors for the job, all seem very decent, but what set Best Home apart was Jeff Segovia. He designed the whole layout of our basement (we love it) and oversaw the entire project from beginning to end. The construction crews were very polite and friendly. Best Home did an excellent job and very flexible with many changes I had and they completed the job on time (took 3 months and exactly 1 week)which was amazing. I am actually hiring them again for additional projects. I highly recommend Best Homes!"
Jesita B on August 2024
We are a family run general contracting company. Joe started doing remodeling and building 30 years ago. The business now includes his son. Ejays MHIC number is: 137030. We do kitchens, bathrooms, and basements. If you need more space we can even build you an addition. Give us a call for a free estimate.
"They did an excellent job. I liked it very much and I am very happy with their service. They really cared for customer. I strongly recommend EJays to others."
Bumsoo L on July 2024
We are a family run general contracting company. Joe started doing remodeling and building 30 years ago. The business now includes his son. Ejays MHIC number is: 137030. We do kitchens, bathrooms, and basements. If you need more space we can even build you an addition. Give us a call for a free estimate.
"They did an excellent job. I liked it very much and I am very happy with their service. They really cared for customer. I strongly recommend EJays to others."
Bumsoo L on July 2024
We promise accurate quotes that don’t change, and offer an on time service guarantee, with exceptional communication. Our company is committed to being as environmentally friendly as possible by utilizing multiple donation and recycling centers.
"Actually, the young man from Outlook who called me did not come, because a company who happened to be in my neighborhood came and fixed the problem. It was more minor than I realized. But Outlook sounded like a great little company to call, and I will keep him in mind for the future."
Christine A on August 2024
We promise accurate quotes that don’t change, and offer an on time service guarantee, with exceptional communication. Our company is committed to being as environmentally friendly as possible by utilizing multiple donation and recycling centers.
"Actually, the young man from Outlook who called me did not come, because a company who happened to be in my neighborhood came and fixed the problem. It was more minor than I realized. But Outlook sounded like a great little company to call, and I will keep him in mind for the future."
Christine A on August 2024
Whether you need a repair, preventive maintenance, or replacement, we are your plumbing, heating, and air conditioning service provider in the northern Virginia and surrounding areas. We invite you to give us a call!
"Nice, reliable, and responded immediately."
Ethan Q on January 2025
Whether you need a repair, preventive maintenance, or replacement, we are your plumbing, heating, and air conditioning service provider in the northern Virginia and surrounding areas. We invite you to give us a call!
"Nice, reliable, and responded immediately."
Ethan Q on January 2025
Top Remodeling is a Rockville remodeling contractor providing residential homeowners with the highest quality remodeling services. We provide professional remodeling services, including kitchen remodeling, bathroom remodeling, ADU construction, and more. In addition, we help you with design, planning, permit, and construction process. We take great pride in our top-notch remodeling services in Rockville and ensure that every project we do turns out perfectly.
"We had Top Remodeling handle our home remodel and renovation project, and we’re thrilled with the outcome. Their expertise and commitment to quality are evident in every detail. From upgrading fixtures to enhancing functionality, they transformed our space into a dream home."
Carroll E on April 2024
Top Remodeling is a Rockville remodeling contractor providing residential homeowners with the highest quality remodeling services. We provide professional remodeling services, including kitchen remodeling, bathroom remodeling, ADU construction, and more. In addition, we help you with design, planning, permit, and construction process. We take great pride in our top-notch remodeling services in Rockville and ensure that every project we do turns out perfectly.
"We had Top Remodeling handle our home remodel and renovation project, and we’re thrilled with the outcome. Their expertise and commitment to quality are evident in every detail. From upgrading fixtures to enhancing functionality, they transformed our space into a dream home."
Carroll E on April 2024
We have the experience and 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!
"Fantastic! The cost ended up quite a bit more than the estimate, but it was beacuse of "old house" reasons, and we were given extra time to pay the balance. Highly recommend Tyler and his crew!"
Heather R on November 2023
We have the experience and 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!
"Fantastic! The cost ended up quite a bit more than the estimate, but it was beacuse of "old house" reasons, and we were given extra time to pay the balance. Highly recommend Tyler and his crew!"
Heather R on November 2023
If you are looking for a HVAC Contractor, a Plumbing Contractor, or an Electrical Contractor to provide you with great service, you've come to the right place. We provide heating services, air conditioning services, plumbing services, and electrical services to our customers in Frederick and the surrounding Counties, the Pan Handle of West Virginia, and Northern Virginia, from our offices located in Frederick MD. With 3 generations of experience in providing heating, air conditioning, plumbing, and electrical services, we are dedicated to providing the best possible products and services for you, and your family.
"Tri State was prompt—they had a tech out within hours when our 20-year-old HVAC broke down. The repair estimate was $800–$1,200, and they also sent a salesman, Mike, to discuss replacement. Mike was courteous and knowledgeable, but, when we sat down to review the quote, the sales process turned into a bad car-buying experience. They started at $34,000, then "discounted" to $29,300—$10,000 -$12,000 higher than other quotes for the exact same unit. Even factoring in their warranty, they remained $8,000–$10,000 overpriced. Mike also claimed they were a four-generation family-owned business, but I later found out they’re owned by Sila Services, a Goldman Sachs private equity firm—which feels misleading. To their credit, canceling was easy (though I hadn’t signed a financing agreement or put money down). Bottom line: Get multiple quotes. Their pricing was excessive, and the sales tactics felt manipulative."
STUART K on March 2025
If you are looking for a HVAC Contractor, a Plumbing Contractor, or an Electrical Contractor to provide you with great service, you've come to the right place. We provide heating services, air conditioning services, plumbing services, and electrical services to our customers in Frederick and the surrounding Counties, the Pan Handle of West Virginia, and Northern Virginia, from our offices located in Frederick MD. With 3 generations of experience in providing heating, air conditioning, plumbing, and electrical services, we are dedicated to providing the best possible products and services for you, and your family.
"Tri State was prompt—they had a tech out within hours when our 20-year-old HVAC broke down. The repair estimate was $800–$1,200, and they also sent a salesman, Mike, to discuss replacement. Mike was courteous and knowledgeable, but, when we sat down to review the quote, the sales process turned into a bad car-buying experience. They started at $34,000, then "discounted" to $29,300—$10,000 -$12,000 higher than other quotes for the exact same unit. Even factoring in their warranty, they remained $8,000–$10,000 overpriced. Mike also claimed they were a four-generation family-owned business, but I later found out they’re owned by Sila Services, a Goldman Sachs private equity firm—which feels misleading. To their credit, canceling was easy (though I hadn’t signed a financing agreement or put money down). Bottom line: Get multiple quotes. Their pricing was excessive, and the sales tactics felt manipulative."
STUART K on March 2025
Switching from oil to gas heating involves several factors that contribute to total costs, such as the distance from the gas main, the heating appliances to replace, and other upgrades to your existing infrastructure. For example, removing an underground oil tank costs between $1,000 and $3,500, and removing an above-ground oil tank costs $300 to $1,500.
A licensed plumber or gas technician can install gas lines. Most municipalities require you to hire a licensed contractor before granting a permit. A general plumber may not charge as much for labor and undertake minor tubing repairs, but installing or repairing gas lines is complex and best suited for a specialized pro.
Yes, you almost always need a permit to run a gas line. Most cities and municipalities require one to ensure your gas line is safely installed to minimize the risk of gas-related accidents. Contractors can help you with the permit application process.
In general, gas lines must be buried at least 18 to 24 inches below the ground. The exact depth varies depending on your area, the type of gas line, and your property’s terrain. Lines aren’t usually buried deeper than 36 inches.