Markool Heating Cooling Plumbing

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Frederick, MD
Markool Heating Cooling Plumbing

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Local company here to help you with all your heating, cooling, plumbing and air quality needs.

Founded in 2016, Markool Heating & Cooling is the name to trust when it comes to heating and air conditioning in Frederick, MD, and the surrounding areas. From our professional team and great Carrier products to free estimates and competitive pricing, we design our full suite of services to earn your complete satisfaction. We have extensive experience with a wide range of both residential and commercial heating, air conditioning, air quality, and plumbing services. If you're interested in maintaining or improving the comfort and efficiency you enjoy indoors, we're the right team for the job. Contact us today to schedule your next HVAC or Plumbing appointment!

10/15/2026

🚿🔊 What’s that sound coming from your water heater?

Your water heater shouldn’t sound like it’s putting on a concert! Different noises can sometimes point to different issues:
Popping or rumbling — Sediment buildup may be collecting at the bottom of the tank.
Hissing or sizzling — Water could be coming into contact with a hot component.
Banging or knocking — Pressure changes or movement in the plumbing may be the cause.
Whistling — A valve may not be fully open or could need attention.
Crackling — Some sounds may be related to condensation, especially with certain gas water heaters.

Hearing something unusual? Don’t ignore it. Markool can inspect your water heater and help determine what’s causing the noise. 🔧
📞 Call: 301-732-4244
📅 Book Online: https://bit.ly/markoolbooking
💧 Water Heater Quote: https://markoolhvac.com/shop/ #/journey/water_heater_quote
🌐 Website: https://markoolhvac.com/

📍 Serving Frederick, Urbana, Spring Ridge, New Market, Walkersville, Middletown, Mount Airy, Ijamsville, Brunswick, Thurmont, Myersville, Libertytown, Jefferson & surrounding areas.

10/14/2026

🔧 Behind the scenes with the Markool team!

A heating and cooling service call is more than just taking a quick look. Our technicians take the time to inspect, test, and check your system to make sure it’s operating safely and efficiently.

From checking your equipment and inspecting filters to testing electrical components, we’re here to help keep your home comfortable all season long. 🔥🏠
📞 Call: 301-732-4244
📅 Book Online: https://bit.ly/markoolbooking
💻 HVAC System Quote: https://markoolhvac.com/shop/ #/journey/h_v_a_c_system_quote
🌐 Website: https://markoolhvac.com/

📍 Serving Frederick, Urbana, Spring Ridge, New Market, Walkersville, Middletown, Mount Airy, Ijamsville, Brunswick, Thurmont, Myersville, Libertytown, Jefferson & surrounding areas.

10/13/2026

🔥 Repair or replace your heating system?

Not every heating problem means you need a brand-new system — but sometimes continuing to repair an older unit can end up costing you more.

🔧 Repair may make sense if:
• The repair is relatively minor
• Your system has been reliable overall
• It’s a one-time issue
• Your energy bills haven’t significantly increased

🏠 Replacement may be worth considering if:
• Your system is 15+ years old
• Repairs are becoming frequent
• Energy bills keep increasing
• Your home isn’t staying comfortable
• Repair costs are adding up

Not sure which option makes the most sense? MARKOOL can inspect your system and help you decide based on your home, comfort needs, and budget.

📞 Call: 301-732-4244
📅 Book Online: https://bit.ly/markoolbooking
💻 HVAC System Quote: https://markoolhvac.com/shop/ #/journey/h_v_a_c_system_quote
🌐 Website: https://markoolhvac.com/

📍 Serving Frederick, Urbana, Spring Ridge, New Market, Walkersville, Middletown, Mount Airy, Ijamsville, Brunswick, Thurmont, Myersville, Libertytown, Jefferson & surrounding areas.

10/12/2026

🚿💧 Signs You May Have a Hidden Leak
Not every plumbing leak is easy to spot. A small hidden leak can lead to wasted water and costly damage if it goes unnoticed.

Keep an eye out for:
💧 An unexplained increase in your water bill
👀 Water stains on walls or ceilings
🏠 Damp or musty smells
🚰 The sound of running water when fixtures are off
📉 Low water pressure
🦠 Mold or mildew in unusual areas
🌱 Wet or unusually green spots in your yard

Notice something that doesn’t seem right? Markool can help identify the problem before it turns into a bigger repair.
📞 Call: 301-732-4244
📅 Book Online: https://bit.ly/markoolbooking
🌐 Website: https://markoolhvac.com/

📍 Serving Frederick, Urbana, Spring Ridge, New Market, Walkersville, Middletown, Mount Airy, Ijamsville, Brunswick, Thurmont, Myersville, Libertytown, Jefferson & surrounding areas.

10/11/2026

🔥 Before You Turn the Heat On… 🍂

Cooler weather is here! Before turning your heating system on for the season, run through this quick checklist:
✅ Replace or check your air filter
✅ Make sure vents and registers are open and clear
✅ Check your thermostat and replace batteries if needed
✅ Clear clutter away from your furnace or heating equipment
✅ Test your heat before you actually need it
✅ Listen for unusual noises and watch for strange smells
✅ Schedule your fall heating tune-up

A little preparation now can help you catch problems before the first really cold night!

📞 Call: 301-732-4244
📅 Book Online: https://bit.ly/markoolbooking
💻 HVAC System Quote: https://markoolhvac.com/shop/ #/journey/h_v_a_c_system_quote
🌐 Website: https://markoolhvac.com/

📍 Serving Frederick, Urbana, Spring Ridge, New Market, Walkersville, Middletown, Mount Airy, Ijamsville, Brunswick, Thurmont, Myersville, Libertytown, Jefferson & surrounding areas.

10/10/2026

🍂🏠 Fall is here — is your home ready?

As the temperatures start to drop, a few simple steps can help keep your home comfortable all season long.

🔥 Schedule your heating tune-up
🌬️ Change your HVAC filter
🚿 Check for plumbing leaks or issues

🏠 Make sure your heating system is ready for colder weather
Whether it’s heating, cooling, or plumbing, Markool is here to help keep your home comfortable this fall! 🍁

📞 Call: 301-732-4244
📅 Book Online: https://bit.ly/markoolbooking
💻 HVAC System Quote: https://markoolhvac.com/shop/ #/journey/h_v_a_c_system_quote
🌐 Website: https://markoolhvac.com/

📍 Serving Frederick, Urbana, Spring Ridge, New Market, Walkersville, Middletown, Mount Airy, Ijamsville, Brunswick, Thurmont, Myersville, Libertytown, Jefferson & surrounding areas.

10/09/2026

⭐️⭐️⭐️⭐️⭐️ Another happy Markool customer!

“Mike has just been amazing. I couldn’t be any happier with the installation of my new heat pump water heater. He’s very organized and highly knowledgeable. I can assure you if he’s assigned to the job you’re in good hands.”
— Juan Pereyra

Thank you, Juan, for the great review and for trusting Markool with your heat pump water heater installation! We’re proud to have Mike on our team providing knowledgeable, organized, and dependable service to our customers. ❤️

Need a new water heater or have questions about your current one? Give us a call!
📞 Call: 301-732-4244
📅 Book Online: https://bit.ly/markoolbooking
💧 Water Heater Quote: https://markoolhvac.com/shop/ #/journey/water_heater_quote
🌐 Website: https://markoolhvac.com/

📍 Serving Frederick, Urbana, Spring Ridge, New Market, Walkersville, Middletown, Mount Airy, Ijamsville, Brunswick, Thurmont, Myersville, Libertytown, Jefferson & surrounding areas.

10/08/2026

🚿 Low water pressure? Your plumbing may be trying to tell you something!

If your shower feels weaker than usual or your faucets just aren’t flowing like they used to, there could be several causes:
💧 Mineral buildup in faucets or showerheads
🔧 A faulty pressure regulator
🚰 Clogged or corroded pipes
⚠️ A hidden water leak
🏠 Issues with your main water supply

If low water pressure is becoming a problem throughout your home, MARKOOL can help find the cause and recommend the right solution.

📞 Call: 301-732-4244
📅 Book Online: https://bit.ly/markoolbooking
🌐 Website: https://markoolhvac.com/

📍 Serving Frederick, Urbana, Spring Ridge, New Market, Walkersville, Middletown, Mount Airy, Ijamsville, Brunswick, Thurmont, Myersville, Libertytown, Jefferson & surrounding areas.

10/07/2026

🔥 How old is your furnace?
If you’re not sure, now is a great time to find out! As heating systems get older, they may become less efficient and need more frequent repairs.

Some signs it may be time to have your system checked:
🔧 Frequent or increasingly expensive repairs
🌡️ Uneven temperatures throughout your home
💰 Rising energy bills
🔊 New or unusual noises
🔥 Trouble keeping your home comfortable

Whether your furnace needs a tune-up, repair, or it’s time to discuss replacement options, MARKOOL is here to help.

📞 Call: 301-732-4244
📅 Book Online: https://bit.ly/markoolbooking
💻 HVAC System Quote: https://markoolhvac.com/shop/ #/journey/h_v_a_c_system_quote
🌐 Website: https://markoolhvac.com/

📍 Serving Frederick, Urbana, Spring Ridge, New Market, Walkersville, Middletown, Mount Airy, Ijamsville, Brunswick, Thurmont, Myersville, Libertytown, Jefferson & surrounding areas.

10/06/2026

🚰 Think before you pour!

What goes down your drain can have a big impact on your plumbing. Cooking oil and grease, coffee grounds, food scraps, wipes, feminine products, and cat litter can all contribute to clogs, backups, and costly plumbing repairs.

Already dealing with a slow or clogged drain? Let MARKOOL help! 🔧
📞 Call: 301-732-4244
📅 Book Online: https://bit.ly/markoolbooking
🌐 Website: https://markoolhvac.com/

📍 Serving Frederick, Urbana, Spring Ridge, New Market, Walkersville, Middletown, Mount Airy, Ijamsville, Brunswick, Thurmont, Myersville, Libertytown, Jefferson & surrounding areas.

Address

1 Wormans Mill Court #12
Frederick, MD
21701

Telephone

+13017324244

Website

http://www.markoolhvac.com/

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