Markool Heating Cooling Plumbing

Call Directions Website

Markool Heating Cooling Plumbing 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!

🏡🔧 What goes into a full HVAC system replacement estimate? 🔧🏡Thinking about replacing your heating and cooling system? T...
11/02/2026

🏡🔧 What goes into a full HVAC system replacement estimate? 🔧🏡

Thinking about replacing your heating and cooling system? There's a lot more that goes into an estimate than just picking out a new unit!

At Markool Heating, Cooling & Plumbing, we take the time to look at your home's existing setup to help determine the best system for your comfort, efficiency, and budget! ❤️

📸 Here's a behind-the-scenes look at what we check during an HVAC replacement estimate!

⚡ 1. Electrical Panel & Power Supply
We inspect your electrical panel and available power to determine whether your home's electrical system can support the new HVAC equipment or if upgrades may be needed.

🌬️ 2. Existing Ductwork & Indoor Equipment
We evaluate your current indoor HVAC equipment, ductwork connections, airflow, and available installation space to identify potential issues and determine what modifications may be necessary.

🏠 3. Outdoor Equipment & Electrical Connections
We examine the outdoor unit location, existing electrical disconnect, refrigerant line routing, and installation space to plan for a safe and proper replacement.

🔍 We also consider:
✅ Your home's heating and cooling needs
✅ Proper system sizing and efficiency options
✅ Existing equipment condition
✅ Installation requirements
✅ Your comfort preferences and budget

💡 Why does all of this matter?

Because every home is different! A proper HVAC estimate helps us recommend a system that's right for YOUR home, rather than simply replacing your old equipment with something similar.

❤️ We're not just here to sell you a system. We're here to help you make an informed decision about your home's comfort!

🔥 Thinking about upgrading your HVAC system before the colder weather arrives? Give Markool a call to discuss your replacement options!

📞 Call Us: (301) 732-4244
📅 Book Online: https://markoolhvac.com/

❤️ Family-Owned & Operated — Your Comfort Is Our Priority!

📍 Proudly Serving: Frederick, Urbana, Spring Ridge, New Market, Walkersville, Middletown, Mount Airy, Ijamsville, Brunswick, Thurmont, Myersville, Libertytown, Jefferson, and surrounding areas!

11/01/2026

🏡❤️ YOUR COMFORT IS OUR BUSINESS!
Whether it's keeping you warm on chilly mornings or making sure your HVAC system is running smoothly, the Markool team is always ready to get the job done! 🔥🔧
No matter the season, you can count on our team to show up, work hard, and treat your home like our own! 💪
❤️ Family-Owned & Operated
🔧 Honest, Reliable Service
🏡 Keeping Local Families Comfortable 📞 (301) 732-4244
🌐 Schedule Online: https://markoolhvac.com/⁠
📍 Proudly Serving: Frederick, Urbana, Spring Ridge, New Market, Walkersville, Middletown, Mount Airy, Ijamsville, Brunswick, Thurmont, Myersville, Libertytown, Jefferson, and surrounding areas!

🍂🍁 HELLO, NOVEMBER! 🍁🍂A new month means cooler temperatures, cozy nights, and the perfect time to make sure your home is...
11/01/2026

🍂🍁 HELLO, NOVEMBER! 🍁🍂

A new month means cooler temperatures, cozy nights, and the perfect time to make sure your home is ready for the colder weather ahead! 🏡❤️

As we head into November, don't let unexpected heating or plumbing problems leave you out in the cold!

At Markool Heating, Cooling & Plumbing, we're here to help keep your home warm, comfortable, and running smoothly all season long! 🔥🔧

✅ Heating Maintenance & Repairs
✅ Furnace & Heat Pump Services
✅ Plumbing Repairs & Drain Cleaning
✅ Water Heater Services
✅ HVAC System Replacements

📣🍁 BE ON THE LOOKOUT! Our NOVEMBER SPECIALS are coming soon! 👀❤️ We've got some great savings headed your way, so stay tuned!

❤️ Family-Owned & Operated — Your Comfort Is Our Priority!

📞 Call Us: (301) 732-4244
📅 Book Online: https://markoolhvac.com/

📍 Proudly Serving: Frederick, Urbana, Spring Ridge, New Market, Walkersville, Middletown, Mount Airy, Ijamsville, Brunswick, Thurmont, Myersville, Libertytown, Jefferson, and surrounding areas!

🍁 Here's to a warm, comfortable, and worry-free November!

⭐⭐⭐⭐⭐ Another happy customer—and a shoutout to Hunter!We’re proud to have Hunter on the Markool team! His knowledge, tho...
10/31/2026

⭐⭐⭐⭐⭐ Another happy customer—and a shoutout to Hunter!

We’re proud to have Hunter on the Markool team! His knowledge, thorough work, and dedication to our customers make a difference. ❤️🔧

Thank you, Caleb, for your kind words and for trusting our family-owned and operated business with your HVAC needs!

📞 Call: 301-732-4244
🌐 https://markoolhvac.com/

🎉 DON'T MISS YOUR CHANCE TO WIN! 🎉

Write us a review to enter our customer appreciation giveaway for a chance to win $150 OFF professional air duct cleaning! ❤️✨

📍 Proudly Serving: Frederick, Urbana, Spring Ridge, New Market, Walkersville, Middletown, Mount Airy, Ijamsville, Brunswick, Thurmont, Myersville, Libertytown, Jefferson, and surrounding areas!

🎃👻 Happy Halloween from Markool! 👻🎃Wishing all of our customers, friends, and neighbors a safe, fun, and spooktacular Ha...
10/31/2026

🎃👻 Happy Halloween from Markool! 👻🎃

Wishing all of our customers, friends, and neighbors a safe, fun, and spooktacular Halloween! 🧡 Whether you’re trick-or-treating, carving pumpkins, or staying cozy at home, we hope your night is filled with plenty of treats and no scary HVAC or plumbing surprises! 👻🔧

And remember — if your heating or plumbing gives you a scare, Markool is only a call away! 🎃
📞 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.

Happy Halloween from the Markool family! 🧡🎃

🎉 MARKOOL CUSTOMER APPRECIATION GIVEAWAY! 🎉 3 Weeks Left!One lucky winner will receive $150 OFF Professional Air Duct Cl...
10/30/2026

🎉 MARKOOL CUSTOMER APPRECIATION GIVEAWAY! 🎉 3 Weeks Left!

One lucky winner will receive $150 OFF Professional Air Duct Cleaning! ❤️
At Markool Heating, Cooling & Plumbing, we appreciate our amazing customers and the community that supports our family-owned business!

🎁 HOW TO ENTER:
1️⃣ Write us a review on google or yelp!
2️⃣ BOOM! You're entered for a chance to WIN!

🎉 All entries will be entered into a random drawing, and one lucky winner will be selected to receive $150 OFF Professional Air Duct Cleaning!

📅 Entries Open: October 20th – November 20th, 2026
🏆 Winner Announced: November 21st, 2026

✨ Thank you for supporting Markool and helping our local family owned & operated business grow!

📞 Call: 301-732-4244
🌐 Website: https://markoolhvac.com/
📅 Book Online: https://bit.ly/markoolbooking
📝 Google Review Link: https://share.google/OjynHf01JZrTe0UJY
🟥 Yelp Review Link: https://www.yelp.com/biz/markool-frederick?utm_campaign=www_business_share_popup&utm_medium=copy_link&utm_source=(direct)

📍 Proudly serving Frederick County and surrounding areas!

Giveaway Details: One entry per person. Prize is $150 off an eligible professional duct cleaning service, not redeemable for cash or combinable with other offers. 🎉 All eligible entries will be entered into a random drawing, and one lucky winner will be selected to receive $150 OFF Professional Air Duct Cleaning!

🔥 Weekend Cold Snap? Make Sure Your Heat Works!Temperatures are dropping, and the last thing you want is to discover you...
10/30/2026

🔥 Weekend Cold Snap? Make Sure Your Heat Works!

Temperatures are dropping, and the last thing you want is to discover your heating system isn’t working when you need it most. 🏠

Before the colder weather arrives:
🔥 Turn your heat on and make sure it starts properly
🌡️ Check that your home reaches the thermostat setting
💨 Make sure warm air is coming from your vents
🔧 Listen for unusual noises
🧹 Check your furnace filter
⚠️ Don’t ignore strange smells or system issues
If something doesn’t seem right, schedule service before you’re left without heat!

Markool is here to help keep your home warm and comfortable. ❤️
📞 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.

🚿❄️ Protect Your Pipes Before Temperatures Drop!Colder weather is on the way, and now is the time to make sure your plum...
10/29/2026

🚿❄️ Protect Your Pipes Before Temperatures Drop!

Colder weather is on the way, and now is the time to make sure your plumbing is prepared. A few preventative steps can help reduce the risk of frozen or burst pipes when temperatures dip.

💧 Disconnect and drain outdoor hoses
🚰 Shut off and drain outdoor faucets when appropriate
🏠 Insulate exposed pipes in colder areas
🚪 Keep garage doors closed if plumbing runs through the space
🌡️ Keep your home heated consistently during freezing weather
🔧 Take care of leaks or plumbing concerns before winter
Don’t wait until a frozen pipe becomes an expensive emergency. Get your plumbing winter-ready with Markool!

📞 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.

10/29/2026

⭐️⭐️⭐️⭐️⭐️ The reviews don’t lie! 👏❤️

At Markool Heating, Cooling & Plumbing, we don’t just provide a service — we build relationships, earn trust, and make sure every customer feels taken care of! 🏡🔧

From our HVAC technicians to our plumbing professionals, our team works hard every day to deliver the 5-star service our customers deserve! 🌟

❤️ As a family-owned business, every review, recommendation, and kind word means the world to us. Thank you for trusting the Markool family with your home!

📞 (301) 732-4244
💻 www.markoolhvac.com

📍 Proudly Serving: Frederick, Urbana, Spring Ridge, New Market, Walkersville, Middletown, Mount Airy, Ijamsville, Brunswick, Thurmont, Myersville, Libertytown, Jefferson, and surrounding areas!

🌟 EMPLOYEE SHOUTOUT! 🌟We are so happy to have Joey on the Markool team! ❤️🔧Joey's honesty, professionalism, and dedicati...
10/28/2026

🌟 EMPLOYEE SHOUTOUT! 🌟

We are so happy to have Joey on the Markool team! ❤️🔧

Joey's honesty, professionalism, and dedication to making sure our customers understand their heating and cooling systems are just a few reasons we're so proud to have him representing Markool!

⭐ A huge thank you to Pam for taking the time to share such a wonderful review! We love hearing that Joe took the time to explain everything, answer questions, and provide honest, knowledgeable service. That's exactly the kind of customer care we strive for every day!

👏 Help us show Joe some love in the comments!

❤️ Family-Owned & Operated
📞 301-732-4244
🌐 www.markoolhvac.com

🎉 DON'T MISS YOUR CHANCE TO WIN! 🎉

Write us a review to enter our customer appreciation giveaway for a chance to win $150 OFF professional air duct cleaning! ❤️✨

📍 Proudly Serving: Frederick, Urbana, Spring Ridge, New Market, Walkersville, Middletown, Mount Airy, Ijamsville, Brunswick, Thurmont, Myersville, Libertytown, Jefferson, and surrounding areas!

Address

1 Worman's Mill Court, 12
Frederick, MD
21701

Alerts

Be the first to know and let us send you an email when Markool Heating Cooling Plumbing posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Shortcuts

Share

Nearby cleaning services