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Thermostat installers and replacers in Germantown
Since 1979, Stiffler's Electric Service has been providing good quality work. Call on us � we get the work done. Our professional staff will make sure that all of your electrical needs are met with the best quality customer service and excellence in electrical craftsmanship. Call David today!
"David Stiffler was awesome. Found the source of the problem, fixed it in a timely manner, was reasonably priced, and just an overall great guy."
Tiffany A on May 2024
Since 1979, Stiffler's Electric Service has been providing good quality work. Call on us � we get the work done. Our professional staff will make sure that all of your electrical needs are met with the best quality customer service and excellence in electrical craftsmanship. Call David today!
"David Stiffler was awesome. Found the source of the problem, fixed it in a timely manner, was reasonably priced, and just an overall great guy."
Tiffany A on May 2024

It is our mission, to provide excellent workmanship and complete customer satisfaction, from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.
"They did a great job. "
Atiq H on July 2025
It is our mission, to provide excellent workmanship and complete customer satisfaction, from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.
"They did a great job. "
Atiq H on July 2025

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!
"Of all the HVAC companies I contacted, these guys had the best rates to come out and diagnose why my A/C was blowing hot air. Will came out and was very thorough and professional in diagnosing the issue and got me up and running in the same visit! He had great communication leading up to the meeting, and also spent a good amount of time talking to me about what was going on with my HVAC and giving advice. Very honest, knowledgeable, and didn't try to pressure upcharge me on anything but did offer additional services. I will definitely be hiring Will again for any other work and when it's time to replace my 14-year old HVAC (but hopefully not too soon!)"
Josh T on July 2024
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!
"Of all the HVAC companies I contacted, these guys had the best rates to come out and diagnose why my A/C was blowing hot air. Will came out and was very thorough and professional in diagnosing the issue and got me up and running in the same visit! He had great communication leading up to the meeting, and also spent a good amount of time talking to me about what was going on with my HVAC and giving advice. Very honest, knowledgeable, and didn't try to pressure upcharge me on anything but did offer additional services. I will definitely be hiring Will again for any other work and when it's time to replace my 14-year old HVAC (but hopefully not too soon!)"
Josh T on July 2024

Plumbing, flooring ,electrical (low voltage's),deck repair ,painting.
"Mir did an excellent job fixing the sliding screen door. I highly recommend him to anyone who needs home repairs. I would definitely request his services again in the future"
Seungchul H on April 2025
Plumbing, flooring ,electrical (low voltage's),deck repair ,painting.
"Mir did an excellent job fixing the sliding screen door. I highly recommend him to anyone who needs home repairs. I would definitely request his services again in the future"
Seungchul H on April 2025
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!
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!

Here at Weather Masters we pride ourselves on affordable, reliable and honest service. With free replacement estimates and competitive service rates, we do our best to keep you and your bank account comfortable.
"Great folks to work with"
Tom H on September 2023
Here at Weather Masters we pride ourselves on affordable, reliable and honest service. With free replacement estimates and competitive service rates, we do our best to keep you and your bank account comfortable.
"Great folks to work with"
Tom H on September 2023

We provide services to homeowners and businesses throughout Northern Virginia, Washington D.C. and Maryland. We spend time during each call asking questions to fully assess the situation, and are usually able to determine the best course of action before we send a truck out to your home or business. We’ve been in the business of employing the most knowledgeable, professional, attentive, and courteous electricians in all of “DMV”. It’s our attention to service and quality, Each appointment made with one of our clients is set up by one of our experienced electricians.
"They installed a chandelier. Did a great job, no issues. Very responsive. "
Dana O on July 2025
We provide services to homeowners and businesses throughout Northern Virginia, Washington D.C. and Maryland. We spend time during each call asking questions to fully assess the situation, and are usually able to determine the best course of action before we send a truck out to your home or business. We’ve been in the business of employing the most knowledgeable, professional, attentive, and courteous electricians in all of “DMV”. It’s our attention to service and quality, Each appointment made with one of our clients is set up by one of our experienced electricians.
"They installed a chandelier. Did a great job, no issues. Very responsive. "
Dana O on July 2025

13 years experience in the HVAC trade. Master technetium. Affordable low cost. Quick and reliable service. Installs and Service repairs. Open 24 hours. With 13 years of dedicated experience in the HVAC industry, Justin, a certified HVAC Master, leads J&J heating and air in providing exceptional heating, ventilation, and air conditioning services. Specializing in both commercial and residential sectors, our expertise spans a wide range of HVAC systems and solutions. Trust, J&J Heating and Air for all your HVAC needs. We are dedicated to keeping your environments comfortable and your systems running smoothly, backed by 13 years of mastery in the field.
"Expert repair HVAC service delivered with exceptional attention to detail, demonstrating highly professional, helpful care and outstanding high-quality work."
Juan M on July 2025
13 years experience in the HVAC trade. Master technetium. Affordable low cost. Quick and reliable service. Installs and Service repairs. Open 24 hours. With 13 years of dedicated experience in the HVAC industry, Justin, a certified HVAC Master, leads J&J heating and air in providing exceptional heating, ventilation, and air conditioning services. Specializing in both commercial and residential sectors, our expertise spans a wide range of HVAC systems and solutions. Trust, J&J Heating and Air for all your HVAC needs. We are dedicated to keeping your environments comfortable and your systems running smoothly, backed by 13 years of mastery in the field.
"Expert repair HVAC service delivered with exceptional attention to detail, demonstrating highly professional, helpful care and outstanding high-quality work."
Juan M on July 2025

Mr. Handyman provides superior customer service with excellent workmanship. We strive to be the most trusted and most professional in home maintenance/repairs. We value every customer and look forward to servicing your home.
"Perfectly. I was very pleased with Gary and his work."
Marion A on November 2020
Mr. Handyman provides superior customer service with excellent workmanship. We strive to be the most trusted and most professional in home maintenance/repairs. We value every customer and look forward to servicing your home.
"Perfectly. I was very pleased with Gary and his work."
Marion A on November 2020

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.
"Great service very prompt and easy to work with."
Randy W on May 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.
"Great service very prompt and easy to work with."
Randy W on May 2025





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