I’ve worked with ALFA Group, LLC and I am very impressed with their knowledge, expertise, and responsiveness. They specialize in generator installations, but can also do plumbing, HVAC and other electrical services. Erlyn, Walter, and the rest of the crew run a professional and trustworthy operation. They not only the best in Manassas, VA, but the best in Northern, VA!
JD
jerry dola
Dec 4, 2025
5.0
Excellent service, very professional and friendly. My only minor complaint is that it is sometimes difficult to reach a person quickly.
HT
Huy Trinh
Oct 27, 2025
5.0
Alfa Group and Erwin have been great. They initially installed my whole house generator years back and when we moved we knew who to contact. They are reliable, quick and most importantly provide a great product. We have been very happy with both jobs they have done for us. Highly recommend.
MS
MARY SNOW
Oct 22, 2025
5.0
I give the ALPHA GROUP and Erlyn Pavon the highest marks for skill and excellence! I would give them 10 Stars if I could! Erlyn Pavon and his ALPHA GROUP solved the exceptionally complicated challenge of removing a very old boiler and water heater that were housed in a small closet between my basement kitchen and my family room in my circa 1860’s house, with radiators throughout my four story house. I wasn’t sure it could ever be done. But Erlyn Pavon and the ALPHA GROUP got it done! They removed the boiler and the water heater, which were vented through an existing chimney, from inside of the closet. They then relocated a new boiler and a new water heater to a corner of the laundry room at the back of the house, and vented them through the side of the house. To make this transition work, they added new copper pipes, ran them from the front of the house to the new boiler and water heater in the laundry room at the back of the house, and labeled each pipe to correspond with the radiator it serves. It was incredibly complex work, and was exceptionally well done. The new heating and hot water systems work efficiently and effectively. I am so grateful for the excellent work performed by the ALPHA GROUP and Erlyn Pavon The next project I have asked the ALPHA GROUP and Erlyn Pavon to take on is replacing three old AC compressors in my home’s dual zone AC system. I trust them implicitly to do exceptional work. I highly and unequivocally recommend the ALPHA GROUP and Erlyn Pavon!
KA
Kevin Alder
Oct 1, 2025
5.0
The Alfa Group team provided electrical, plumbing, and HVAC services in a timely manner and reasonably priced. The team upfitted my residence from a 100amp service to a 400amp service, providing a complete rewire and new wire for the remodeling of my residence, ~6,700sq ft.
Additionally, the Alfa Group provided plumbing and HVAC services during the remodel. Replacing all water supply and drain (waste), adding an 80-gallon commercial gas hot water heater. They upgraded the house to a dual zoned HVAC system - gas furnace, heat pump, AC.
The Alfa Group, as I later discovered, is a licensed MEP (mechanical, electrical, plumbing) and GC (general contractor) company.
They did a terrific job while on site and their service follow-up has been excellent.
The appropriate generator size depends on the specific appliances you intend to power. For a comprehensive assessment of our Kohler and Generac generator options in Manassas, VA, please contact our office to discuss your needs.
What's the difference between a portable generator and standby generator?
Standby generators activate automatically during power outages, while portable generators require manual setup. For detailed information about our standby, portable, and whole home generators available in Manassas, VA, please reach out to our ALFA Group, LLC team.
How long does it take to install a standby generator?
The installation of a standby generator typically requires two days, subject to specific requirements. For more information about the installation process for Kohler and Generac generators in Manassas, VA, please contact our office.
What brands of generators do you sell and install?
Our company specializes in the sale and installation of Kohler and Generac generators in the Manassas, VA area.
Can a standby generator run my entire house during a power outage?
A properly sized and professionally certified standby generator can indeed power your entire house. To explore our range of Kohler and Generac generators in Manassas, VA, please contact our office for a consultation.
How often do I need to service my generator?
Based on our industry expertise, we recommend servicing your generator every six months. For specific maintenance guidelines for Kohler and Generac generators in Manassas, VA, please contact our team.
How do I know if my generator needs repair or replacement?
Determining whether your generator needs repair or replacement requires an evaluation by a qualified professional. For an assessment of your Kohler or Generac generator in Manassas, VA, please schedule an appointment with our team.
Do you provide emergency work for generators?
Yes, we offer emergency repair services for generators. If you require urgent repairs for your standby, portable, or whole home generator in Manassas, VA, please contact our emergency service line.
Why should I install a generator before a major storm?
Installing a generator before a major storm is crucial to prevent power loss. The U.S. Food Safety and Inspection Service advises that food becomes unsafe for consumption if refrigerated above 40 degrees Fahrenheit for more than two hours. For information about our standby, portable, and whole home generators in Manassas, VA, please contact our office.
Can a generator be installed in a flood area?
Generator installation in flood-prone areas is possible with proper precautions, such as elevated mounting. We adhere to all safety protocols and manufacturer guidelines. To discuss Kohler and Generac generator installations in Manassas, VA, please contact our office.
What types of generators does ALFA Group, LLC specialize in?
ALFA Group, LLC specializes in Generac and Kohler generator models, including portable and standby generators for residential and commercial use.
How do I determine the right size generator for my home?
The required generator size depends on your specific appliances. Contact ALFA Group's team for a personalized assessment to find the best fit for your needs.
How long does it take to install a standby generator?
Installation typically takes about two days but may vary depending on your specific requirements.
Does ALFA Group offer emergency services for generators?
Yes, they provide 24-hour emergency repair services and same-day appointments are available.
Can a standby generator run my entire house during a power outage?
Yes, with proper sizing and professional certification, a standby generator can power your entire home during outages.
What maintenance schedule is recommended for generators?
Generators should be serviced every six months to ensure optimal performance and longevity.
Does ALFA Group require appointments for service?
Yes, appointments are required to schedule services with ALFA Group, LLC.
What nearby places can I visit when in the area of ALFA Group, LLC?
Nearby you can visit Taste of Old Country, a Mediterranean restaurant and bar, DolbyDrums furniture store, and the Holiday Inn Manassas - Battlefield for lodging and events.
How can nearby businesses like DolbyDrums and Pride Air Conditioning & Heating complement my visit to ALFA Group?
DolbyDrums offers furniture shopping nearby, while Pride Air Conditioning & Heating provides HVAC services; combining visits can help you address home improvement and comfort needs efficiently.
Is there convenient parking available when visiting ALFA Group, LLC?
Yes, ALFA Group offers free onsite and lot parking, as well as free street parking, making it easy to access their location at 7208 South Hill Dr in Manassas, VA.