
Reliable AC Replacement in Frederick, Maryland
A New System You Can Count On
Nobody wants to deal with a broken AC, especially during a heatwave. That’s where our expert HVAC contractors come in! At Smock HVAC, we’re here to keep your air conditioning running smoothly with regular maintenance so you can stay cool all summer long. Let us help prevent those inconvenient breakdowns and make sure your system is always ready when you need it most.

Over 1,000+ Google Reviews️
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World Class Technicians
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Customer Service Focused
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24/7 Live Answering Service
Why Make The Switch To A New AC?
A new air conditioner offers more than just cooling. It transforms your home into a haven of comfort while boosting efficiency and convenience. Today’s modern AC systems not only lower energy costs but also come equipped with smart technology, allowing you to control your cooling remotely for maximum convenience. Many units feature advanced filtration to remove allergens and pollutants, creating a healthier indoor environment. They also operate more quietly than older models, ensuring a peaceful home. At Smock HVAC, we’re here to provide a hassle-free installation, so you can enjoy a cooler, smarter, and healthier home without any stress!
Our models are:
- Long lasting
- Energy efficient
- Reliable
- Fully adjustable
Reach Out For an Appointment Today!
We decided to look in to a mini split for upstairs. Drew came out within days of calling, explained everything to us, answered all questions, brought up things we didn’t think of, and was very friendly, nice, helpful, and professional. They were able to schedule installation immediately and James and CJ came out to install, plus two electrician contractors. All were absolutely amazing and went way above and beyond. James and CJ worked in over 90 degree heat, that felt like 100, on our deck in the blazing sun with no shade. They worked so hard in pretty awful conditions and did a truly amazing job. We ordered lunch and made them come inside to eat and have a break in ac, and I really enjoyed talking with both of them for the few minutes they were willing to take a small break. I was honestly kind of dreading the installation day, expecting it to be a lot, but they made it so easy and the end result is better than we expected.
I would say this is probably the best experience my husband and I have ever had having work done in our home. We’ve had lots of companies come out to do various things and we’ve never had such a positive experience and such high quality work. These guys are top notch and way beyond 5 stars. The inside and outside units look amazing and like they came with/are part of the house. We used the mini split last night and all had a very comfortable chilly night. The dog actually slept all night without a peep.
And I absolutely agree with other review; make sure you have lots of cold drinks available and buy these guys lunch because they more than deserve those tiny things for hours and hours of their hard work in ridiculous temperatures. Highly recommend Smock and we are now customers for life.
Maintenance Savings Plan
Sign Up for Our Comfort Plan!
HVAC maintenance should be at the forefront of every homeowner’s mind. Signing up for our Comfort Maintenance Savings Plan is a surefire way to safeguard your comfort, keep your energy bills under control and reduce your carbon footprint.

The Experience You Need & Team You Can Trust
At Smock HVAC, our NATE-certified technicians bring unmatched expertise and professionalism to every new AC installation. NATE (North American Technician Excellence) certification ensures our team is highly trained and qualified to handle the installation process with precision and care. You can count on us to provide reliable service, efficient solutions, and the attention your home deserves. With Smock HVAC, your new air conditioning system is installed by the best, ensuring your comfort for years to come.
Serving Frederick County Residents Since 2005
$120/month
for New HVAC Systems
*With approved credit, on qualifying new systems. Additional restrictions may apply. Contact Smock Heating & Air Conditioning for complete details.
FREE
Estimates on System Replacement
*Not valid with any other offers. Restrictions may apply. Call Smock Heating & Air Conditioning, Inc. for complete details.
10% Off
a Repair for Military & First Responders
*Does not apply to HVAC Installations or Water Heater replacement. Other restrictions may apply. Contact Smock Heating & Air Conditioning for complete details.
FREE
2nd Opinion on Major HVAC Repairs
*Restrictions may apply. Call Smock Heating & Air Conditioning for complete details.
Current Specials
Year Round Deals For Your Whole Home
A broken HVAC system shouldn’t break your budget! We offer a rotating selection of monthly deals designed to save you money, time, and stress. Choose the team that puts your needs first, every time!
FAQs
Common Client Questions
What are the signs that I need to replace my AC system?
Uneven cooling and frequently shutting off are signs that your AC might be at the end of its life.
What makes and models of AC systems do you install?
We install over 30 different brands! If you can find it, we can install it!
Why should I choose Smock HVAC?
At Smock HVAC, we’re a family owned & operated mentality. Our family values are the core of what we do. We believe every individual deserves trustworthy service and courteous interactions. Customer care is what we do best!
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