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Thermostat installers and replacers in Falls Church
Mayday HVAC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.
"Provided great service when it was an emergency at my mothers house and got here AC back up and running right away and was also able to service my unit same day. He showed me exactly what was wrong and was very honest and fair with the pricing and repairs. Saved my mother a lot of money!!! He definitely has a customer for life with me. His knowledge and professionalism is excellent!!!! I would recommend him to anyone!"
Mesay B on March 2024
Mayday HVAC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.
"Provided great service when it was an emergency at my mothers house and got here AC back up and running right away and was also able to service my unit same day. He showed me exactly what was wrong and was very honest and fair with the pricing and repairs. Saved my mother a lot of money!!! He definitely has a customer for life with me. His knowledge and professionalism is excellent!!!! I would recommend him to anyone!"
Mesay B on March 2024
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.
"Kevin did very excellent and thorough installation of the EV charging outlet."
Yuhong W on March 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.
"Kevin did very excellent and thorough installation of the EV charging outlet."
Yuhong W on March 2025
When your business or home comfort system breaks down, you need a solution—fast. At SwiftPro, we help homeowners in Fairfax, VA and across Northern Virginia get back to comfort with reliable, professional service they can trust. As a local, family-owned business, we take pride in doing the job right—with clear communication, upfront pricing, and respect for your time and your home. Whether it's a quick AC repair, a new air conditioning installation, or help with water heaters, heating systems, or full HVAC replacements, we're here to guide you every step of the way. Our expert technicians deliver solutions that are fast, fair, and built to last—because your comfort and peace of mind matter. 📍 Serving Fairfax, Chantilly, Centreville, Herndon, Vienna, Burke, and surrounding Northern Virginia communities. 📅 Schedule your service today and experience the SwiftPro difference—where family values meet five-star service.
"Competent and efficient technician. Owner made sure everything was done properly "
Daniel D on January 2025
When your business or home comfort system breaks down, you need a solution—fast. At SwiftPro, we help homeowners in Fairfax, VA and across Northern Virginia get back to comfort with reliable, professional service they can trust. As a local, family-owned business, we take pride in doing the job right—with clear communication, upfront pricing, and respect for your time and your home. Whether it's a quick AC repair, a new air conditioning installation, or help with water heaters, heating systems, or full HVAC replacements, we're here to guide you every step of the way. Our expert technicians deliver solutions that are fast, fair, and built to last—because your comfort and peace of mind matter. 📍 Serving Fairfax, Chantilly, Centreville, Herndon, Vienna, Burke, and surrounding Northern Virginia communities. 📅 Schedule your service today and experience the SwiftPro difference—where family values meet five-star service.
"Competent and efficient technician. Owner made sure everything was done properly "
Daniel D on January 2025
GS Custom Remodelers LLC Professionals with a Class A General Contracting License and Insurance specializing in all of your Remodeling needs. From Bathrooms, to Kitchen Redesigns, Finishing Basements, and Building Custom Decks, Patios, and Porches we have a wide range of experience and are dedicated to providing quality home improvement at an affordable price. Conveniently located in the Manassas area we serve the entire Northern Virginia. Speak with our pros today for a Free Consultation & Free Estimate.
"Juan and his team were excellent! They did a great job repairing the drywall, and once painted, it was seamless with the existing drywall. Also, there was good communication throughout the process, and the space was kept clean and tidy. I highly recommend and plan to call GS Custom Remodels for my next project."
Katie D on October 2024
GS Custom Remodelers LLC Professionals with a Class A General Contracting License and Insurance specializing in all of your Remodeling needs. From Bathrooms, to Kitchen Redesigns, Finishing Basements, and Building Custom Decks, Patios, and Porches we have a wide range of experience and are dedicated to providing quality home improvement at an affordable price. Conveniently located in the Manassas area we serve the entire Northern Virginia. Speak with our pros today for a Free Consultation & Free Estimate.
"Juan and his team were excellent! They did a great job repairing the drywall, and once painted, it was seamless with the existing drywall. Also, there was good communication throughout the process, and the space was kept clean and tidy. I highly recommend and plan to call GS Custom Remodels for my next project."
Katie D on October 2024
At SwiftPro, we prioritize your comfort and peace of mind. Serving Fairfax and the greater Northern Virginia area, we offer fast, reliable HVAC and plumbing services tailored to your specific needs. Our expert technicians provide efficient solutions for heating, cooling, water heaters, and more, with a commitment to clear communication and upfront pricing. With a focus on customer-first service, we respect your time and home, delivering honest, high-quality work that gets your space back to optimal comfort quickly. Whether you need a quick repair or a new system installation, SwiftPro is here to help Northern Virginia residents keep their homes running smoothly. Schedule your service today and experience the SwiftPro difference! Call or Text Us Now!
"Courteous, Professional, and Knowledgeable HVAC Installer - Needed to replace a 25+ year old HVAC system in the coldest months of the year and SwiftPro was the right choice. I live in a condo with a tricky indoor/outdoor HVAC set-up. Tyler worked with me to ensure I had the right system that 'fit' in the area left after removing the old system. Workers were completely professional and knowledgeable during installation and dare I say - courteous. Installation was supposed to be same-day, but one part was unavailable at the time. Tyler and his staff hunted across the local area for the part and even sent an employee out to buy a space heater to spare me from the below-20 degree night. Part came in next day and installation was complete. Very satisfied with the outcome of the project."
James B on May 2025
At SwiftPro, we prioritize your comfort and peace of mind. Serving Fairfax and the greater Northern Virginia area, we offer fast, reliable HVAC and plumbing services tailored to your specific needs. Our expert technicians provide efficient solutions for heating, cooling, water heaters, and more, with a commitment to clear communication and upfront pricing. With a focus on customer-first service, we respect your time and home, delivering honest, high-quality work that gets your space back to optimal comfort quickly. Whether you need a quick repair or a new system installation, SwiftPro is here to help Northern Virginia residents keep their homes running smoothly. Schedule your service today and experience the SwiftPro difference! Call or Text Us Now!
"Courteous, Professional, and Knowledgeable HVAC Installer - Needed to replace a 25+ year old HVAC system in the coldest months of the year and SwiftPro was the right choice. I live in a condo with a tricky indoor/outdoor HVAC set-up. Tyler worked with me to ensure I had the right system that 'fit' in the area left after removing the old system. Workers were completely professional and knowledgeable during installation and dare I say - courteous. Installation was supposed to be same-day, but one part was unavailable at the time. Tyler and his staff hunted across the local area for the part and even sent an employee out to buy a space heater to spare me from the below-20 degree night. Part came in next day and installation was complete. Very satisfied with the outcome of the project."
James B on May 2025
We specialize in Handyman Services: TV installation Curtain Rod Hanging Picture Hanging Emergency Roof Tarping Roof Inspections Storm Restoration Roofing We pride ourselves on the quality work we provide, while delivering great customer service. Call - or - Click to schedule an appointment today!
"John did an excellent job of documenting storm damages to my roof and making the argument for a full roof replacement with insurance. He was professional, on-time, and very knowledgeable."
Madhu R on June 2024
We specialize in Handyman Services: TV installation Curtain Rod Hanging Picture Hanging Emergency Roof Tarping Roof Inspections Storm Restoration Roofing We pride ourselves on the quality work we provide, while delivering great customer service. Call - or - Click to schedule an appointment today!
"John did an excellent job of documenting storm damages to my roof and making the argument for a full roof replacement with insurance. He was professional, on-time, and very knowledgeable."
Madhu R on June 2024
Family owned & operated. Financing available. Credit cards. All work done by experienced professionals to ensure consistent high quality. Award winning company at your service.
"Snell installed our new HVAC and we were initially pleased. However, the unit failed a county inspection. When Snell reached out to set up a repair, our window was 10am-2pm. The technician showed up at 4pm without the materials he needed. He promptly left having done nothing, said he would get what he needed and return. We heard nothing."
Dian B on August 2024
Family owned & operated. Financing available. Credit cards. All work done by experienced professionals to ensure consistent high quality. Award winning company at your service.
"Snell installed our new HVAC and we were initially pleased. However, the unit failed a county inspection. When Snell reached out to set up a repair, our window was 10am-2pm. The technician showed up at 4pm without the materials he needed. He promptly left having done nothing, said he would get what he needed and return. We heard nothing."
Dian B on August 2024
The Doctor House, Handyman, we can do almost everything, using good materials, no job is to small if we can't do we have a business partners and we can help you with your Home Improvement or your HONEY DO LIST, also we am do interior and exterior painting, drywall repair and hanging, finishing, roof repair, light electric, and light pluming, deck repair, kitchen, basements, laundry rooms, and much more.
"Carlos was very friendly and knowledgeable. I will use him for a future project."
Liam T on April 2025
The Doctor House, Handyman, we can do almost everything, using good materials, no job is to small if we can't do we have a business partners and we can help you with your Home Improvement or your HONEY DO LIST, also we am do interior and exterior painting, drywall repair and hanging, finishing, roof repair, light electric, and light pluming, deck repair, kitchen, basements, laundry rooms, and much more.
"Carlos was very friendly and knowledgeable. I will use him for a future project."
Liam T on April 2025
Two Brothers Handyman and Home Improvement Service has 20+ years experience and a "CLASS A LICENSE IN VA & DC". We love every type of project from large scale renovations to even the smallest of jobs! We specialize in quality workmanship at affordable prices. We take pride in maintaining a consistently high-caliber level of work that comes with a satisfaction guarantee. Open and honest lines of communication with our clients during every step of the project is key to building relationships with successful outcomes. Washington DC License #2705168243, Expiration 5/31/2020.
"Ruben and the team did such a great job on the first project (2-3yrs ago) that I asked them to come back and finish my condo's water heater closet, which showed wear and tear from past water damage. They did a fantastic job in repairing the closet and adjacent living room's dry walls that it looked seamless to the rest of the unit. The team was always conscious of keeping the work area clean as they closed the area off with tarp and placed drop cloths down. I greatly appreciate the amount of high-quality work done in a short time span, especially when asked within two weeks of the project starting. I've recommended the team to my family and friends if they ever need a job done right by a team who is professional, courteous, and knowledgeable."
Sophia L on April 2025
Two Brothers Handyman and Home Improvement Service has 20+ years experience and a "CLASS A LICENSE IN VA & DC". We love every type of project from large scale renovations to even the smallest of jobs! We specialize in quality workmanship at affordable prices. We take pride in maintaining a consistently high-caliber level of work that comes with a satisfaction guarantee. Open and honest lines of communication with our clients during every step of the project is key to building relationships with successful outcomes. Washington DC License #2705168243, Expiration 5/31/2020.
"Ruben and the team did such a great job on the first project (2-3yrs ago) that I asked them to come back and finish my condo's water heater closet, which showed wear and tear from past water damage. They did a fantastic job in repairing the closet and adjacent living room's dry walls that it looked seamless to the rest of the unit. The team was always conscious of keeping the work area clean as they closed the area off with tarp and placed drop cloths down. I greatly appreciate the amount of high-quality work done in a short time span, especially when asked within two weeks of the project starting. I've recommended the team to my family and friends if they ever need a job done right by a team who is professional, courteous, and knowledgeable."
Sophia L on April 2025
In need for a local handy man to fix your home problems? Or maybe you're looking for someone to do your interior/ exterior work in your home? We are here to help! Our purpose for this company is to ensure high quality, trustworthy, and professional work. Tambien se tabla Español!!!
In need for a local handy man to fix your home problems? Or maybe you're looking for someone to do your interior/ exterior work in your home? We are here to help! Our purpose for this company is to ensure high quality, trustworthy, and professional work. Tambien se tabla Español!!!
Thermostat installations and replacements FAQs
It's often worth replacing your old thermostat with a newer model that can enhance your home's comfort and energy efficiency. Upgrading to a programmable or smart thermostat can save you up to $200 per year on energy bills. Plus, smart thermostats offer convenient features like remote control and learning capabilities, making your home more comfortable and easier to manage.
Signs of a bad thermostat include your HVAC system not turning on when it's supposed to or failing to reach the desired temperature. If the thermostat's display is blank or not functioning properly, it could be malfunctioning. Another indicator is the HVAC system running continuously without shutting off or cycling on and off too frequently. You might also notice uneven temperatures throughout your home, with some rooms being too warm or too cold. These issues suggest that the thermostat is failing and may need repair or replacement to ensure your HVAC system operates efficiently.
A thermostat should last between 10 to 20 years, depending on its quality and how well it's maintained. Over time, dust, wiring issues, and general wear can affect its performance. Even if a thermostat is still functioning after 10 years, you might choose to replace it to take advantage of newer energy-saving technologies and smart home integrations. Upgrading to a modern thermostat can improve efficiency, offer more control over your home's climate, and potentially lower energy bills.
The number of thermostats you need depends on your home's size, layout, and heating and cooling zones. In a standard single-zone HVAC system, one thermostat controls the temperature for the entire home. However, larger homes or those with multiple floors might benefit from multiple thermostats linked to a multi-zone HVAC system. This setup can offer better comfort and energy efficiency: It lets you customize the temperature in different areas, so you're only heating or cooling the spaces you're using.
Replacing a thermostat typically takes a professional technician about one to two hours to complete. If you're swapping out an existing thermostat for a similar model with compatible wiring, the process can be done in less than an hour. However, installing a new thermostat that requires additional wiring, such as a smart thermostat, or moving the thermostat to a new location can extend the time to two hours or more. Complex installations may also involve cutting into drywall or integrating with other home systems, which can add to the duration.
There are a few things that can cause your home thermostat to fail. The most simple one is age and cleanliness. Dirt, grease, dust, and other small particles can clog sensors and cause malfunctions in readings. You may also have a failing power supply and loose connections, and the simplest cause is that it isn't installed in the right place in your home so it can't properly sense air temperature. Repairing a thermostat costs around $210.
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