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There are 35 highly-rated local heating and air conditioning pros.

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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon1.9k+
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Frederick, MD

*The Angi rating for Heating And Air Conditioning Service companies in Frederick, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Frederick, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on November 15, 2025

Find Heating and air conditioning pros in Frederick

Avatar for Holtzople Heating, Air Conditioning, & Electrical Services

Holtzople Heating, Air Conditioning, & Electrical Services

4.87(
190
)
•Approved Pro

Holtzople Heating, Air Conditioning, & Electrical Services

4.87(
190
)
•Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
47 local quotes requested

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 an outstanding experience with Holtzople Heating, Air Conditioning & Electrical Services thanks to the excellent work of Andrew and Jake. From the moment they arrived, they were professional, courteous, and clearly very knowledgeable. Andrew and Jake took the time to explain everything they were doing, answered all of our questions patiently, and worked efficiently to get the job done right. Their attention to detail and commitment to quality were obvious throughout the entire process. Our installation was seamless and we are very pleased. It’s not every day you find staff who combine technical skill with great customer service, but these two really delivered. It’s clear that Holtzople hires top-notch staff, and I wouldn’t hesitate to recommend their services to anyone. In fact, we are now repeat customers and have used Holtzople for additional services. Thanks again to Andrew and Jake for a job well done, and Holtzople for providing excellent products and services!"

Joanne M on October 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 an outstanding experience with Holtzople Heating, Air Conditioning & Electrical Services thanks to the excellent work of Andrew and Jake. From the moment they arrived, they were professional, courteous, and clearly very knowledgeable. Andrew and Jake took the time to explain everything they were doing, answered all of our questions patiently, and worked efficiently to get the job done right. Their attention to detail and commitment to quality were obvious throughout the entire process. Our installation was seamless and we are very pleased. It’s not every day you find staff who combine technical skill with great customer service, but these two really delivered. It’s clear that Holtzople hires top-notch staff, and I wouldn’t hesitate to recommend their services to anyone. In fact, we are now repeat customers and have used Holtzople for additional services. Thanks again to Andrew and Jake for a job well done, and Holtzople for providing excellent products and services!"

Joanne M on October 2025

Avatar for Miles Yellott

Miles Yellott

5.00(
5
)

Miles Yellott

5.00(
5
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

I’m Miles, and I have been in the electrical industry for 4 years. I have completed high school trade schooling and 4 year technical schooling. My best skillset is in residential wiring, including new construction wiring, remodels, troubleshooting, electrical panels, fixture installation, and much more. I’m also skilled in commercial work, such as bending and installing conduit, running MC cable, and working on three phase power systems. I work independently at a company but I enjoy doing work for people on my days off or in my free time. I have multiple clients that I’ve been working with for years, they’ve become more of friends than just people I work for. I enjoy my work and the people it allows me to get to know and help.

"Perfect. What a wonderful gentleman."

Mel M on February 2025

I’m Miles, and I have been in the electrical industry for 4 years. I have completed high school trade schooling and 4 year technical schooling. My best skillset is in residential wiring, including new construction wiring, remodels, troubleshooting, electrical panels, fixture installation, and much more. I’m also skilled in commercial work, such as bending and installing conduit, running MC cable, and working on three phase power systems. I work independently at a company but I enjoy doing work for people on my days off or in my free time. I have multiple clients that I’ve been working with for years, they’ve become more of friends than just people I work for. I enjoy my work and the people it allows me to get to know and help.

"Perfect. What a wonderful gentleman."

Mel M on February 2025

Avatar for Malgar Construction LLC

Malgar Construction LLC

4.67(
3
)

Malgar Construction LLC

4.67(
3
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

All are included in the Residential Houses in all Maryland States. We are proud to provide standard service in and out of Home Improvement.

"Malgar Construction LLC is very professional. I have an old house and new hot tub and swimming pool. I couldn't use any of my new toys untilMalgar Construction LLC From keeping the appointment time to completing the work. Most of all you would never know work was done because they cleaned up everything."

Lashun E on July 2024

All are included in the Residential Houses in all Maryland States. We are proud to provide standard service in and out of Home Improvement.

"Malgar Construction LLC is very professional. I have an old house and new hot tub and swimming pool. I couldn't use any of my new toys untilMalgar Construction LLC From keeping the appointment time to completing the work. Most of all you would never know work was done because they cleaned up everything."

Lashun E on July 2024

Avatar for DMV MECHANICAL SOLUTIONS INC

DMV MECHANICAL SOLUTIONS INC

No reviews yet

DMV MECHANICAL SOLUTIONS INC

No reviews yet
7 years of experience

Objective: Results-driven professional with a proven entrepreneurial background and expertise in sheet metal fabrication, ductwork installation, HVAC installation, hanging kitchen hoods, and welding. Seeking a challenging role in the sheet metal industry to utilize my skills, experience, and commitment to quality craftsmanship. With experience in commercial and residential projects, I am dedicated to delivering exceptional results in sheet metal fabrication, ductwork installation, HVAC installation, kitchen hood hanging and welding. My objective is to contribute to a dynamic organization by leveraging my expertise in these areas to achieve success in a collaborative and fast-paced environment. DMV Mechanical solutions Inc., Silver Spring, MD Owner/Operator, 2018 - Present

Objective: Results-driven professional with a proven entrepreneurial background and expertise in sheet metal fabrication, ductwork installation, HVAC installation, hanging kitchen hoods, and welding. Seeking a challenging role in the sheet metal industry to utilize my skills, experience, and commitment to quality craftsmanship. With experience in commercial and residential projects, I am dedicated to delivering exceptional results in sheet metal fabrication, ductwork installation, HVAC installation, kitchen hood hanging and welding. My objective is to contribute to a dynamic organization by leveraging my expertise in these areas to achieve success in a collaborative and fast-paced environment. DMV Mechanical solutions Inc., Silver Spring, MD Owner/Operator, 2018 - Present

Avatar for srm mechanical

srm mechanical

No reviews yet

srm mechanical

No reviews yet
25 years of experience

SRM Mechanical is a small veteran owned heating and air conditioning company with over 20 years experience specializing in installations of residential and commercial equipment, design and installation of Duct work, service and repair for gas, heat pump, and oil furnaces (Boilers) systems. We service every manufacture brand of equipment.

SRM Mechanical is a small veteran owned heating and air conditioning company with over 20 years experience specializing in installations of residential and commercial equipment, design and installation of Duct work, service and repair for gas, heat pump, and oil furnaces (Boilers) systems. We service every manufacture brand of equipment.

Monumental Contractors

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Monumental Contractors

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The Most Complete all around Experts In Commercial and Residential builds,remodels, tenant fit outs or just simple repairs and continual maintenance. We also are very diverse with our team of architects and engineers that are committed to our clients and making their dreams into reality!

The Most Complete all around Experts In Commercial and Residential builds,remodels, tenant fit outs or just simple repairs and continual maintenance. We also are very diverse with our team of architects and engineers that are committed to our clients and making their dreams into reality!

Avatar for Work Of Art Homes

Work Of Art Homes

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Work Of Art Homes

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Designs & Consultation - Mounting - Framing - Designs - Flooring - Doors/Windows - Drywall - Painting - Cabinets - Electrical - Plumbing - HVAC

Designs & Consultation - Mounting - Framing - Designs - Flooring - Doors/Windows - Drywall - Painting - Cabinets - Electrical - Plumbing - HVAC

Avatar for R Square Consolidated Svcs

R Square Consolidated Svcs

No reviews yet

R Square Consolidated Svcs

No reviews yet
8 years of experience

Heating and air conditioning services, we specialize in maintenance, repair and installation of heating and air condition equipment, residential or commercial. Since it's creation we have provided quality installation and support services to residents and business. our technicians have expert knowledge and extensive experience providing you with a reliable service and superior results

Heating and air conditioning services, we specialize in maintenance, repair and installation of heating and air condition equipment, residential or commercial. Since it's creation we have provided quality installation and support services to residents and business. our technicians have expert knowledge and extensive experience providing you with a reliable service and superior results

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Heating and Air Conditioning questions, answered by experts

When a compressor gets overheated in central air systems or heat pumps, it can still cool your home for a while until it eventually gives out. If the compressor is chronically overheated and no one addresses the root cause, it will create an incredibly expensive problem when your entire HVAC system breaks down and stops working altogether.

A dual evaporator coil is a specific design that allows the AC system to cool different compartments at different levels. It’s usually seen in refrigerators and similar appliances, but not in whole-house air conditioning systems. Talk with your AC technician about the best uses for a dual evaporator coil.

Yes. It's not just AC filters that get dirty. Ducts can accumulate dust and dirt quickly. Insects and animals can also get into duct systems, creating many problems. Dirt build-up and unwanted guests can constrict the airflow and cause rooms not to cool evenly. You might also see higher energy bills because they're not working as efficiently.

The difference between a home surge protector and an HVAC surge protector is that an HVAC surge protector is designed to protect the components inside your HVAC unit while a home surge protector is installed near appliances and meant to protect your entire home. There are three tiers of whole-house surge protectors, and they are more expensive to install than HVAC surge protectors.

The higher the BTU rating an air conditioner has, the more effective it can be at cooling your space. It will cool off your room faster in the short term. However, over the long term, if the unit has too many BTUs for the space, it can wear down the unit faster and shorten its life span.

The Frederick, MD homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.

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