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Verified Reviews for Boiler Repair pros in Knoxville, MD
*The Angi rating for Boiler Repair companies in Knoxville, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Repair needs.
*The HomeAdvisor rating for Boiler Repair companies in Knoxville, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Repair needs.
Last update on December 12, 2025
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West Shore Home Baltimore
West Shore Home Baltimore
To accomplish our mission, we have implemented a simple approach that will restore the beauty of your home while significantly reducing your energy bills - and we get it done in just one day! From start to finish, the West Shore Window & Door, Inc., experience is engineered to bring happiness to every home. The health and safety of our customers and employees is a top priority. Our team is following all CDC guidelines so we can provide you with the fast and convenient home improvements. We are also offering free virtual design consultations! Schedule your free consultation today.
"Excellent customer service. Excellent finished product. West Shore Home came to install a shower in one bathroom and bathtub/shower in another bathroom. Their customer service is top tier! They took extra caution to ensure they didn’t damage or disrupt my home or other furniture as they carried their equipment in and out of the house. They encouraged me to see the progress as they worked. (Nothing to hide is always a good thing.) When I expressed surprise and disappointment with one aspect of the design, they immediately began solutioning the issue."
Isiah T on January 2025
To accomplish our mission, we have implemented a simple approach that will restore the beauty of your home while significantly reducing your energy bills - and we get it done in just one day! From start to finish, the West Shore Window & Door, Inc., experience is engineered to bring happiness to every home. The health and safety of our customers and employees is a top priority. Our team is following all CDC guidelines so we can provide you with the fast and convenient home improvements. We are also offering free virtual design consultations! Schedule your free consultation today.
"Excellent customer service. Excellent finished product. West Shore Home came to install a shower in one bathroom and bathtub/shower in another bathroom. Their customer service is top tier! They took extra caution to ensure they didn’t damage or disrupt my home or other furniture as they carried their equipment in and out of the house. They encouraged me to see the progress as they worked. (Nothing to hide is always a good thing.) When I expressed surprise and disappointment with one aspect of the design, they immediately began solutioning the issue."
Isiah T on January 2025

Holtzople Heating, Air Conditioning, & Electrical Services
Holtzople Heating, Air Conditioning, & Electrical Services
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!
"Happy Holidays all! Please use my Holtzople (H) review to help you address your HVAC needs! Last summer, my Trane AC unit failed. Corey W (H) was the tech that came out to the house and troubleshooted/resolved the problem (leaking refrigerant). He also advised on probability of future repairs. Sadly, the unit performed well for only a short time before failing. It was time to consider my options. Repairs were becoming more frequent and costly. Tyler (H System Designer) visited and walked around my house inspecting my current HVAC system. We discussed repairing or replacing my ailing AC unit. He recommended replacing with a split ductless system and emailed a quote for 1. Enhanced Mitsubishi hyper heat mini split system (system) 2. Favorable financing options - low interest rates and affordable monthly payments. The install took a week. H’s crew arrived each morning, respected my property, and worked as a team to carefully install the new system. With gratitude, John"
John M on November 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!
"Happy Holidays all! Please use my Holtzople (H) review to help you address your HVAC needs! Last summer, my Trane AC unit failed. Corey W (H) was the tech that came out to the house and troubleshooted/resolved the problem (leaking refrigerant). He also advised on probability of future repairs. Sadly, the unit performed well for only a short time before failing. It was time to consider my options. Repairs were becoming more frequent and costly. Tyler (H System Designer) visited and walked around my house inspecting my current HVAC system. We discussed repairing or replacing my ailing AC unit. He recommended replacing with a split ductless system and emailed a quote for 1. Enhanced Mitsubishi hyper heat mini split system (system) 2. Favorable financing options - low interest rates and affordable monthly payments. The install took a week. H’s crew arrived each morning, respected my property, and worked as a team to carefully install the new system. With gratitude, John"
John M on November 2025

GAC Services
GAC Services
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

McCrea Heating & Air Conditioning Services of PA
McCrea Heating & Air Conditioning Services of PA
McCrea is a family owned business that has served our area since 1936. Financing and rebates are available on Trane systems installed by McCrea. Resistrictions apply and these are limited time offers call for details. "Its hard to stop a Trane"
"We bought a new construction and McCrea installed the HVAC. Home inspection identified the heat pump was not working in Oct. 2020. McCrea identified it was due to leaking refrigerants and promise fixed the issue. Our electric bill was extremely high the following two months and the heat pump was not cooling in Spring 2021. McCrea sent technician and again repaired the system. Bought their maintenance plan. We had 4+ repairs plus regular tune up in the past two years. Last week the heat pump stopped cooling again. We are out of labor warranty and charge us with $89 diagnostic cost after membership discount. It took three days for them to send someone to check while we suffering 90F in our house. They identified the compressor dead and need replacement. They charge $1900 for labor after membership discount. Most likely cause of the compressor failure is "suicide" with assistance. Low refrigerant at beginning and over change in later repairs likely contributed the short life."
Wei X on July 2023
McCrea is a family owned business that has served our area since 1936. Financing and rebates are available on Trane systems installed by McCrea. Resistrictions apply and these are limited time offers call for details. "Its hard to stop a Trane"
"We bought a new construction and McCrea installed the HVAC. Home inspection identified the heat pump was not working in Oct. 2020. McCrea identified it was due to leaking refrigerants and promise fixed the issue. Our electric bill was extremely high the following two months and the heat pump was not cooling in Spring 2021. McCrea sent technician and again repaired the system. Bought their maintenance plan. We had 4+ repairs plus regular tune up in the past two years. Last week the heat pump stopped cooling again. We are out of labor warranty and charge us with $89 diagnostic cost after membership discount. It took three days for them to send someone to check while we suffering 90F in our house. They identified the compressor dead and need replacement. They charge $1900 for labor after membership discount. Most likely cause of the compressor failure is "suicide" with assistance. Low refrigerant at beginning and over change in later repairs likely contributed the short life."
Wei X on July 2023

R & G Water Systems Inc
R & G Water Systems Inc
R & G Water Systems carries, installs, services and repairs well pumps and water treatment and conditioning systems for residential and light commercial application. We also deal with acid neutralizers.
"Great! I called after hours and Rick was pleasant. He asked to text a picture of the leaking. Brad was here in the morning. One hour later he was finished The price was reasonable. Would definitely hire again"
Thomas S on December 2021
R & G Water Systems carries, installs, services and repairs well pumps and water treatment and conditioning systems for residential and light commercial application. We also deal with acid neutralizers.
"Great! I called after hours and Rick was pleasant. He asked to text a picture of the leaking. Brad was here in the morning. One hour later he was finished The price was reasonable. Would definitely hire again"
Thomas S on December 2021

Basement Gurus, LLC
Basement Gurus, LLC
Basement Gurus LLC, is a locally owned and operated company with over 20 years of experience. We specialize in professional waterproofing services. Our commitment is 100% guaranteed customer satisfaction on every project. Call us today, so that we can give you a free estimate and make your project come to life!
"I was getting water in my basement every time it rained, Dan helped me rule out other causes and recommended a french drain. Basement has been bone dry ever since. The workers took great care and even repaired the water damage from before. I highly recommend calling Basement Gurus for any basement related needs"
Andrew R on December 2025
Basement Gurus LLC, is a locally owned and operated company with over 20 years of experience. We specialize in professional waterproofing services. Our commitment is 100% guaranteed customer satisfaction on every project. Call us today, so that we can give you a free estimate and make your project come to life!
"I was getting water in my basement every time it rained, Dan helped me rule out other causes and recommended a french drain. Basement has been bone dry ever since. The workers took great care and even repaired the water damage from before. I highly recommend calling Basement Gurus for any basement related needs"
Andrew R on December 2025

Relax HVAC, Inc.
Relax HVAC, Inc.
Relax HVAC, Inc. is a fully insured and licensed heating and air conditioning firm in Ashburn, Virginia, composed of Master Technicians led by Kamal. He and his team provide round-the-clock emergency services for residential and commercial customers, including those in the Iranian, Arabic, and Palestinian communities. With more than 25 years of experience in providing air conditioning services, Kamal takes pride in making customers feel good about his company. He does this by giving them quality and honest services at great prices. His services are approved and recommended by the Loudoun County Fire Department.
"My AC failed and I had limited time to find a good solution, I made a phone call to Relax HVAC based on the online reviews and it was a great decision. Nasser came to check the situation, he gave a very detailed and comprehensive overview of the situation and provided with the options I had. I decided to replace the unit, Nasser went above and beyond to find a unit delivery service but there was nothing available over the weekend so this gentleman went for unit pick up himself and finished the installation within a day from my initial call. Moreover, the provided price was very reasonable.I can't be more happy with the outcome and highly recommend Relax HVAC"
Navid P on July 2024
Relax HVAC, Inc. is a fully insured and licensed heating and air conditioning firm in Ashburn, Virginia, composed of Master Technicians led by Kamal. He and his team provide round-the-clock emergency services for residential and commercial customers, including those in the Iranian, Arabic, and Palestinian communities. With more than 25 years of experience in providing air conditioning services, Kamal takes pride in making customers feel good about his company. He does this by giving them quality and honest services at great prices. His services are approved and recommended by the Loudoun County Fire Department.
"My AC failed and I had limited time to find a good solution, I made a phone call to Relax HVAC based on the online reviews and it was a great decision. Nasser came to check the situation, he gave a very detailed and comprehensive overview of the situation and provided with the options I had. I decided to replace the unit, Nasser went above and beyond to find a unit delivery service but there was nothing available over the weekend so this gentleman went for unit pick up himself and finished the installation within a day from my initial call. Moreover, the provided price was very reasonable.I can't be more happy with the outcome and highly recommend Relax HVAC"
Navid P on July 2024

LBI Home & Building Inspection
LBI Home & Building Inspection
- What sets me apart from other top inspectors is rather than spending 2-1/2 to 3 hrs. merely documenting the home's structure, systems, and components, and identifying deficiencies and potential problems; I focus upon teaching you about the home. Yes, it will be me, not a (surprise) employee, who will be serving you. Rather than simply enabling you to make informed decisions regarding your contract to purchase, I am enabling you to understand the specifics of your future home, which thereby enable me to teach you how to operate its systems most efficiently, reduce your energy costs, and how to maintain your home and protect your investment. You needn’t ask if you can accompany me and ask questions — I will arrive about an hour before you to set up my program, and document exterior conditions. Upon your arrival we will enter, conduct a detailed orientation, then inspect the home together. During which I’ll explain everything and answer any questions you may have. When we’ve completed inspecting, we’ll review the draft of the upcoming report, so you’ll know what issues will be in the report before we leave. Please be prepared to spent 4 hours with me. Why hire an inspector whose services merely meet Licensing and Certification minimum requirements which focus only upon protecting your contractual needs by identifying deficiencies and concerns? When for the same investment, you can participate in an LBI Education Inspection which in addition to providing you with a more comprehensive report, also teaches you all about the property, answers your questions, and provides a report created to serve as an informative manual similar to what is in the glove box of your vehicle.
""Mark was AMAZING! I know so much about my new home. He paid attention to detail and answered every question I had with no problem. I would call him for help again with no hesitation.""
Shamara M on June 2024
- What sets me apart from other top inspectors is rather than spending 2-1/2 to 3 hrs. merely documenting the home's structure, systems, and components, and identifying deficiencies and potential problems; I focus upon teaching you about the home. Yes, it will be me, not a (surprise) employee, who will be serving you. Rather than simply enabling you to make informed decisions regarding your contract to purchase, I am enabling you to understand the specifics of your future home, which thereby enable me to teach you how to operate its systems most efficiently, reduce your energy costs, and how to maintain your home and protect your investment. You needn’t ask if you can accompany me and ask questions — I will arrive about an hour before you to set up my program, and document exterior conditions. Upon your arrival we will enter, conduct a detailed orientation, then inspect the home together. During which I’ll explain everything and answer any questions you may have. When we’ve completed inspecting, we’ll review the draft of the upcoming report, so you’ll know what issues will be in the report before we leave. Please be prepared to spent 4 hours with me. Why hire an inspector whose services merely meet Licensing and Certification minimum requirements which focus only upon protecting your contractual needs by identifying deficiencies and concerns? When for the same investment, you can participate in an LBI Education Inspection which in addition to providing you with a more comprehensive report, also teaches you all about the property, answers your questions, and provides a report created to serve as an informative manual similar to what is in the glove box of your vehicle.
""Mark was AMAZING! I know so much about my new home. He paid attention to detail and answered every question I had with no problem. I would call him for help again with no hesitation.""
Shamara M on June 2024

VKB Kitchen & Bath
VKB Kitchen & Bath
VKB Kitchen & Bath is a proud member of the NKBA (National Kitchen and Bath Association). VKB Kitchen & Bath is also insured, licensed (class A), and bonded, and we are here to make sure that each and every project we work on is as spectacular as it is functional.
"2 of 997 Urgent: Project Management Issues & Pending Renovation Work We are experiencing significant project management issues that have caused unnecessary delays and frustration.Their quality of work is good but project management sucks big time,. We started our bathroom rennovations on Nov 29th 2024 the project wsda supposed to be completed in 5 weeks now it is almost 2 months and the master bathroom still needs to begin constreuction. We have had 3 project managers so far. However, despite multiple follow-ups over the past week via our text messaging group and several calls, we have yet to receive any updates on a variety of outstanding work in the loft and guest bathroom that need to be done. This lack of communication and progress is unacceptable. While we understand that Elkay is taking a break, the responsibility for keeping us informed and ensuring the project stays on track should not be neglected. We are not getting proper updates about stataus of several pending issues and we feel like we are being passed around without any clear resolution or accountability. The most pressing concern is the arrival of the bathtub, as all further work on the master bathroom is stalled until it arrives."
Firdosh B on January 2025
VKB Kitchen & Bath is a proud member of the NKBA (National Kitchen and Bath Association). VKB Kitchen & Bath is also insured, licensed (class A), and bonded, and we are here to make sure that each and every project we work on is as spectacular as it is functional.
"2 of 997 Urgent: Project Management Issues & Pending Renovation Work We are experiencing significant project management issues that have caused unnecessary delays and frustration.Their quality of work is good but project management sucks big time,. We started our bathroom rennovations on Nov 29th 2024 the project wsda supposed to be completed in 5 weeks now it is almost 2 months and the master bathroom still needs to begin constreuction. We have had 3 project managers so far. However, despite multiple follow-ups over the past week via our text messaging group and several calls, we have yet to receive any updates on a variety of outstanding work in the loft and guest bathroom that need to be done. This lack of communication and progress is unacceptable. While we understand that Elkay is taking a break, the responsibility for keeping us informed and ensuring the project stays on track should not be neglected. We are not getting proper updates about stataus of several pending issues and we feel like we are being passed around without any clear resolution or accountability. The most pressing concern is the arrival of the bathtub, as all further work on the master bathroom is stalled until it arrives."
Firdosh B on January 2025

Once & Done Waterproofing Solutions, LLC
Once & Done Waterproofing Solutions, LLC
At Once & Done Waterproofing Solutions, LLC, 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! With our new location in Martinsburg, WV we service Berkeley, Jefferson, and Morgan counties and our new location in Mercersburg, PA, we are happy to serve Franklin, Fulton, Adams, and Cumberland counties.
"Once & Done did a great job!"
Hugh L on August 2024
At Once & Done Waterproofing Solutions, LLC, 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! With our new location in Martinsburg, WV we service Berkeley, Jefferson, and Morgan counties and our new location in Mercersburg, PA, we are happy to serve Franklin, Fulton, Adams, and Cumberland counties.
"Once & Done did a great job!"
Hugh L on August 2024
FAQs for boiler repair projects in Knoxville, MD
The average cost to install a new water heater is around $1,300, but you can expect to pay between $875 and $1,750, depending on the kind of water heater, the size of the unit, and the professional chosen to complete the work. Tankless water heaters can push your price higher, as installation is more complicated, with prices as high as $3,500. The location and accessibility of your water heater will play a role in the project cost, as those sitting in tight spaces like a crawl space will drive up your labor costs.
Yes, most states require plumbers to be licensed, and for good reason. Hiring an unlicensed plumber could lead to poor quality work, costly future expenses, and potential code violations.
As you browse our pro listings, take note of the “Angi Approved” badge. Angi Approved businesses meet our standards for certification which include:
The owner, principal, or relevant manager passed a criminal background check
Required to have applicable state and local licenses
Maintain an average star rating of 3.0 or better on our network, if they have at least one review
Paying to advertise their services
Meeting any other eligibility criteria required by Angi
Keep in mind licensing is different from certifications. A license is a legal requirement to operate a business, while certifications are voluntary.
Yes, most states require HVAC technicians to be certified, and for good reason. Hiring an unlicensed HVAC technician could lead to poor quality work, costly future expenses, and potential code violations.
As you browse our pro listings, take note of the “Angi Approved” badge. Angi Approved businesses meet our standards for certification which include:
The owner, principal, or relevant manager passed a criminal background check
Required to have applicable state and local licenses
Maintain an average star rating of 3.0 or better on our network, if they have at least one review
Paying to advertise their services
Meeting any other eligibility criteria required by Angi
Keep in mind licensing is different from certifications. A license is a legal requirement to operate a business, while certifications are voluntary.
It is very difficult and dangerous to install your own water heater, so we strongly recommend against tackling this as a DIY project. Not only will you need to wire your water heater, but you’ll also need to connect plumbing to the intake and outlet. Sweating copper pipes and connecting wiring properly are skills most DIYers don’t have, and even if you do feel confident you can do it, working with water and electricity always leaves the potential for electrocution. Hiring a local water heater installer is well worth the investment.
The average cost to hire a plumber is around $100 an hour but can vary between $45 and $200 an hour depending on the plumber’s experience and the repair that you need. It’s also important to note that these prices can go up on holidays, and emergency plumber rates average $150 per hour, in addition to a flat-rate trip fee of $100 to $350.
The Knoxville, MD homeowners’ guide to boiler repairs
From average costs to expert advice, get all the answers you need to get your job done.
•Repairing ductwork in a crawl space is frustrating and difficult, which is reflected in the cost. Learn why limited access results in a premium cost beyond just a simple increase in labor hours.
•Find out the average humidifier repair cost, what impacts pricing, and how to save. Get expert tips to budget for your humidifier repair.

Discover the primary whole-house air filtration system cost factors when installing one in your home to help remove airborne contaminants and allergens.

Balancing your home’s radiators is a simple way to increase the efficiency and effectiveness of your HVAC system. Check out these 8 tips before you start.
How to clean your air conditioner depends on the unit type. Sometimes, a good hose-down is all you need if you have centralized AC. This guide can help with the cleaning process.

Take several factors into consideration when upgrading your HVAC system. Our guide will help you choose the right HVAC upgrade.
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