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Avatar for GAC Services

GAC Services

4.86(
268
)
Approved Pro

GAC Services

4.86(
268
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
56 years of experience

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"Highly professional, knowledgeable and well behaved technician. Prices offered were good too. I definitely recommend the company."

Deepak U on February 2025

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"Highly professional, knowledgeable and well behaved technician. Prices offered were good too. I definitely recommend the company."

Deepak U on February 2025


Avatar for Lumina Solar, Inc.

Lumina Solar, Inc.

4.97(
127
)
Approved Pro

Lumina Solar, Inc.

4.97(
127
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
8 years of experience

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. We offer a variety of solar installation tasks that can be customized to each individual property. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

"Lumina Solar was outstanding from start to finish. The company was very professional, and the crews were polite and respectful while working on our home. The installation was top-notch with no issues at all—it looks great and we’ve had zero leaks. Additionally, our energy bills are noticeably lower, and in some months, PECO even pays us. We’re delighted with our decision to go with Lumina Solar and couldn’t recommend their team more highly."

Michael B on August 2025

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. We offer a variety of solar installation tasks that can be customized to each individual property. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

"Lumina Solar was outstanding from start to finish. The company was very professional, and the crews were polite and respectful while working on our home. The installation was top-notch with no issues at all—it looks great and we’ve had zero leaks. Additionally, our energy bills are noticeably lower, and in some months, PECO even pays us. We’re delighted with our decision to go with Lumina Solar and couldn’t recommend their team more highly."

Michael B on August 2025


Avatar for Remedy Plumbing and Drain Cleaning

Remedy Plumbing and Drain Cleaning

4.90(
63
)
Approved Pro

Remedy Plumbing and Drain Cleaning

4.90(
63
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
19 years of experience

We are a family-owned business. We listen to your needs and offer quality plumbing and specialized in drain solutions. The knowledge and experience acquired in 15 years is enough to get your systems back in working order in no time. No matter what your plumbing or drain issue is, we will provide the solution quickly. No job is too small or big. Please call us for a free estimate today 240-918-4809

"Excellent, efficient, and affordable!"

Dan G on November 2025

We are a family-owned business. We listen to your needs and offer quality plumbing and specialized in drain solutions. The knowledge and experience acquired in 15 years is enough to get your systems back in working order in no time. No matter what your plumbing or drain issue is, we will provide the solution quickly. No job is too small or big. Please call us for a free estimate today 240-918-4809

"Excellent, efficient, and affordable!"

Dan G on November 2025


Avatar for Sila Heating, Cooling and Plumbing

Sila Heating, Cooling and Plumbing

4.75(
1,971
)
Approved Pro

Sila Heating, Cooling and Plumbing

4.75(
1,971
)
Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
37 years of experience

Live Your Most Comfortable Life with a Company You Trust. We offer Same Day Service and Next Day Installation! Sila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it’s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe — season after season. We guarantee satisfaction and are proud to have earned over 7,000 “A” ratings on Angie’s List and its prestigious Super Service Award!

"They charged $98 to come give me an estimate for swapping our a shower valve cartridge, which was fine, but the pricing they provided was completely unreasonable, $1,000. They were unwilling to provide any detail for the price. I ended up buy the part myself for $30 and replaced it in 30 minutes."

Tom A on October 2024

Live Your Most Comfortable Life with a Company You Trust. We offer Same Day Service and Next Day Installation! Sila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it’s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe — season after season. We guarantee satisfaction and are proud to have earned over 7,000 “A” ratings on Angie’s List and its prestigious Super Service Award!

"They charged $98 to come give me an estimate for swapping our a shower valve cartridge, which was fine, but the pricing they provided was completely unreasonable, $1,000. They were unwilling to provide any detail for the price. I ended up buy the part myself for $30 and replaced it in 30 minutes."

Tom A on October 2024


Avatar for DAY & NIGHT PLUMBER LLC

DAY & NIGHT PLUMBER LLC

4.84(
88
)
Approved Pro

DAY & NIGHT PLUMBER LLC

4.84(
88
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
6 years of experience

We have 19+ years of plumbing experience to service in residential clients. We are drain cleaning specialists. We have extensive experience performing repairs on different piping systems, snaking drains, fixing leaks, and installing pipes and water heaters. We provide free estimate.

"They were very professional. They showed up on time and did a great job. I was working from home and they caused minimal noise and disruption."

Kristy H on September 2025

We have 19+ years of plumbing experience to service in residential clients. We are drain cleaning specialists. We have extensive experience performing repairs on different piping systems, snaking drains, fixing leaks, and installing pipes and water heaters. We provide free estimate.

"They were very professional. They showed up on time and did a great job. I was working from home and they caused minimal noise and disruption."

Kristy H on September 2025


Avatar for Wallace Plumbing

Wallace Plumbing

5.00(
22
)
Approved Pro

Wallace Plumbing

5.00(
22
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
3 years of experience

Wallace Plumbing takes great value into every repair and project entrusted to us. From the smallest faucet leak to your sump pump, or water heater installation you can count on Wallace Plumbing to complete the task diligently, professionally, and efficiently.

"Dereck was excellent. Did the job quick and was very professional "

Brian M on October 2025

Wallace Plumbing takes great value into every repair and project entrusted to us. From the smallest faucet leak to your sump pump, or water heater installation you can count on Wallace Plumbing to complete the task diligently, professionally, and efficiently.

"Dereck was excellent. Did the job quick and was very professional "

Brian M on October 2025


Avatar for Mahon Plumbing

Mahon Plumbing

4.79(
183
)
Approved Pro

Mahon Plumbing

4.79(
183
)
Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
32 years of experience

Welcome to Mahon Plumbing Inc. We proudly serve the Baltimore/Annapolis region as your local plumber since 1994. We are a full service company offering quality plumbing, gas installation and services for residential, commercial and new construction. We have fully stocked vehicles that are ready to handle even the toughest jobs. License Information/Numbers: A202144, 11839, MP9438, 836 & 70650.

"I had a plumbing issue that I thought would turn into a major headache, but Mahon Plumbing made the whole process smooth and stress-free. They arrived on time, quickly diagnosed the problem, and had it fixed before I could even make a second cup of coffee. They were professional, knowledgeable, and even gave me a few tips to avoid future issues. The pricing was fair, and there were no surprises on the bill—just great service from start to finish. If you need a plumber who knows what they’re doing and won’t leave you with a mess, I highly recommend Mahon Plumbing. I’ll definitely call them again for any future plumbing needs!"

Bill V on February 2025

Welcome to Mahon Plumbing Inc. We proudly serve the Baltimore/Annapolis region as your local plumber since 1994. We are a full service company offering quality plumbing, gas installation and services for residential, commercial and new construction. We have fully stocked vehicles that are ready to handle even the toughest jobs. License Information/Numbers: A202144, 11839, MP9438, 836 & 70650.

"I had a plumbing issue that I thought would turn into a major headache, but Mahon Plumbing made the whole process smooth and stress-free. They arrived on time, quickly diagnosed the problem, and had it fixed before I could even make a second cup of coffee. They were professional, knowledgeable, and even gave me a few tips to avoid future issues. The pricing was fair, and there were no surprises on the bill—just great service from start to finish. If you need a plumber who knows what they’re doing and won’t leave you with a mess, I highly recommend Mahon Plumbing. I’ll definitely call them again for any future plumbing needs!"

Bill V on February 2025


Avatar for Len The Plumber, LLC.

Len The Plumber, LLC.

4.39(
1,173
)
Approved Pro

Len The Plumber, LLC.

4.39(
1,173
)
Approved Pro
Customers say: Super punctual
30 years of experience
Emergency services offered

Len The Plumber Heating & Air, LLC is a leading plumbing and drain company serving Central Maryland. Our certified professional plumbers are available same day to assist residential customers in Anne Arundel County, Baltimore City, Baltimore County, Carroll County, Cecil County, Harford County, and Howard County. Our knowledgeable plumbers have years of experience dealing with a wide variety of plumbing issues including plumbing repairs, drain cleaning, water heaters, well systems, heating systems, sewer, water, and gas lines. We’re open 7 days a week with no extra charge on evenings or weekends!

"Very fast, very good. "

Mary W on January 2026

Len The Plumber Heating & Air, LLC is a leading plumbing and drain company serving Central Maryland. Our certified professional plumbers are available same day to assist residential customers in Anne Arundel County, Baltimore City, Baltimore County, Carroll County, Cecil County, Harford County, and Howard County. Our knowledgeable plumbers have years of experience dealing with a wide variety of plumbing issues including plumbing repairs, drain cleaning, water heaters, well systems, heating systems, sewer, water, and gas lines. We’re open 7 days a week with no extra charge on evenings or weekends!

"Very fast, very good. "

Mary W on January 2026


Avatar for Roto-Rooter Plumbing & Water Cleanup

Roto-Rooter Plumbing & Water Cleanup

4.24(
640
)
Approved Pro

Roto-Rooter Plumbing & Water Cleanup

4.24(
640
)
Approved Pro
Customers say: Quick response
91 years of experience
Free onsite estimate

When you need an emergency plumber or a drain cleaner, call Roto-Rooter Plumbing & Water Cleanup. Your fast & reliable plumber can fix any plumbing problem, including sump pumps, toilet repair, faucet repair, faucet replacement, garbage disposals, water heaters, bathtubs, showers, and outside faucets. Roto-Rooter is best known for drain cleaning & sewer cleaning. We fix drain clogs, clogged toilets or sinks, blockage of main sewer lines, slow draining shower and bathtub drains, sewer lines and leaking or burst pipes. We also specialize in water damage restoration & water cleanup services. We can fix and clean up your flooded basement too. Roto-Rooter is a 24-hour plumber near you and provides emergency service.

"They wanted $542 just to install a basic kitchen faucet! Ridiculous!"

Stephen T on November 2024

When you need an emergency plumber or a drain cleaner, call Roto-Rooter Plumbing & Water Cleanup. Your fast & reliable plumber can fix any plumbing problem, including sump pumps, toilet repair, faucet repair, faucet replacement, garbage disposals, water heaters, bathtubs, showers, and outside faucets. Roto-Rooter is best known for drain cleaning & sewer cleaning. We fix drain clogs, clogged toilets or sinks, blockage of main sewer lines, slow draining shower and bathtub drains, sewer lines and leaking or burst pipes. We also specialize in water damage restoration & water cleanup services. We can fix and clean up your flooded basement too. Roto-Rooter is a 24-hour plumber near you and provides emergency service.

"They wanted $542 just to install a basic kitchen faucet! Ridiculous!"

Stephen T on November 2024


Avatar for HPC Services

HPC Services

4.75(
16
)
Approved Pro

HPC Services

4.75(
16
)
Approved Pro
Customers say: Quick response
2 years of experience
Free onsite estimate

No call out fee! Call today for your free quote! 15% Military and Veterans discount! $50 Water Heater Tune Up! $50 AC Tune Up! HPC Services is a proud Service Disabled Veteran Owned Small Business brining a fresh take on HVAC and plumbing to Maryland. Our technicians are trained to service, repair, and maintain your systems. HPC Services offers HVAC servicing and repair, HVAC replacement, new HVAC installations, ductwork, duct and vent cleaning, plumbing services and pipe repairs, main drain line snaking, line snaking, drain cleaning, clog removal and more! Financing available!

"HPC quickly determined and resolved the cause for our problem in August. However, they also determined that we had a relay that needed to be replaced. They informed me that it would take some time to get the relay, I think they mentioned delays due to the tariff situation. They promised to get back to me when the relay came in. They jury-rigged the system to work properly without the damaged relay, but warned me that the jury-rig would malfunction badly if we switched from cooling to heating. Starting in November, we called HPC a half-dozen times over several weeks asking for the status of the replacement relay. We were told that the appropriate people would be informed, and that they would call us back with the requested information. On November 11th, I sent an e-mail containing the same information. This resulted in a response containing an estimate for something called a "heat kit". When I asked whether the "heat kit" contained the replacement relay, I got no response. "

James K on December 2025

No call out fee! Call today for your free quote! 15% Military and Veterans discount! $50 Water Heater Tune Up! $50 AC Tune Up! HPC Services is a proud Service Disabled Veteran Owned Small Business brining a fresh take on HVAC and plumbing to Maryland. Our technicians are trained to service, repair, and maintain your systems. HPC Services offers HVAC servicing and repair, HVAC replacement, new HVAC installations, ductwork, duct and vent cleaning, plumbing services and pipe repairs, main drain line snaking, line snaking, drain cleaning, clog removal and more! Financing available!

"HPC quickly determined and resolved the cause for our problem in August. However, they also determined that we had a relay that needed to be replaced. They informed me that it would take some time to get the relay, I think they mentioned delays due to the tariff situation. They promised to get back to me when the relay came in. They jury-rigged the system to work properly without the damaged relay, but warned me that the jury-rig would malfunction badly if we switched from cooling to heating. Starting in November, we called HPC a half-dozen times over several weeks asking for the status of the replacement relay. We were told that the appropriate people would be informed, and that they would call us back with the requested information. On November 11th, I sent an e-mail containing the same information. This resulted in a response containing an estimate for something called a "heat kit". When I asked whether the "heat kit" contained the replacement relay, I got no response. "

James K on December 2025

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Solar Panels questions, answered by experts

Although solar panels harness the sun's power, they come at an environmental cost. The manufacturing process requires large amounts of water and involves hazardous materials like cadmium, silicon, and gallium arsenide. These materials don’t pose safety hazards while the panels are in use but can pose a problem when left in landfills. Over time, hazardous materials can leach into the environment. This is why recycling solar panels whenever possible is better than taking them to landfills.

While solar panels can be a great investment, they aren’t ideal for every roof. For example, some roofs, especially older or structurally weak ones, may struggle to support the added weight, leading to potential damage. Roofs with complex designs, obstructions, or limited sunlight exposure might not provide optimal conditions for solar energy production. Consider these downsides when determining if solar panel installation costs are worth it.

In most cases, installing solar panels will not void your roof warranty. To keep roof warranties intact, check your written warranty or call the manufacturer to ask about clauses regarding roof penetrations. You can also protect yourself by getting written approval or a modified warranty that specifically allows the solar installation type you’re planning. Then, hire a professional solar installer that follows roofing manufacturer instructions and protects the roof during installation.

Homeowners replace their solar panels after 25 years. That said, you don’t necessarily need to replace them at the 25-year mark. You’ll notice a declining ability to produce electricity over time. Most homeowners spring for a replacement when they notice their energy bills creeping up to regular levels or when solar panel repairs are extensive, frequent, and no longer economical.

Yes, going solar really saves money. In fact, according to some calculations, the average homeowner who switches from electric to solar power will save almost $2,000 a year on energy costs. While buying solar panels and switching to solar can be costly up front, the savings add up over time. If you can sell back extra energy or take advantage of tax incentives, your savings can be even higher.

The Crofton, MD homeowners’ guide to solar panel services

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

What do you need done? We’ll find top pros.
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