Business Details
48 Years
experience
Emergency
services
Trusted HVAC & Plumbing Services in Baltimore & Annapolis
A.J. Michaels has been a trusted name in heating, cooling, plumbing, and home performance since 1978. As a family-owned and operated business, we prioritize local expertise, offering tailored solutions without relying on subcontractors. Our team holds Master licenses in plumbing, heating, air conditioning, and electric, alongside certifications from the Building Performance Institute. We specialize in energy-efficient systems, including SpacePak ductless solutions and Aeroseal duct sealing, and have earned recognition from the Department of Energy and Carriers Presidents Award.With a focus on transparency, we analyze each clients needs before recommending solutions, ensuring long-term savings through rebates and financing programs. Our commitment to quality is backed by a BBB A+ rating and decades of customer referrals across central Maryland.
Services
Commercial Heating
Commercial Cooling
Residential Plumbing
Water Heaters
Duct Sealing
Home Energy Audit
Mini-Splits
Boiler Installation
Emergency Repairs
Home Performance
Details
- Year established: 1978
Highlights and features
- We hold Master licenses in plumbing, heating, and HVAC, ensuring unmatched technical expertise.
- Our BPI-certified professionals deliver energy-efficient home performance solutions.
- In-house training guarantees our team stays current with the latest industry innovations.
- Recognized by the Department of Energy for energy savings achievements since 1978.
- We stand behind our work with a BBB A+ rating and decades of customer referrals.
Associations and certifications
- Building Performance Institute
- Carrier Presidents Award
- BBB A+ Rating
- Department of Energy Century Club Award
What people say
Straightforward and professional
Amazing service
Unbelievable price
Prompt and courteous
Stand behind their work
Services
Commercial HVAC
A.J. Michaels designs, installs, and maintains energy-efficient HVAC systems for commercial properties. Our solutions reduce operational costs by up to 75% through innovative technology and modular applications. Certified engineers ensure compliance with industry standards, serving businesses, restaurants, and churches in central Maryland.
Residential Plumbing
We provide comprehensive plumbing solutions for residential properties, including repairs, installations, and emergency services. Our licensed technicians handle water heaters, sump pumps, and sewer line issues, ensuring long-term reliability and customer satisfaction in Baltimore and Annapolis.
Duct Sealing
Using Aeroseal technology, we seal duct leaks to improve energy efficiency and indoor air quality. This service reduces utility bills by preventing conditioned air loss, backed by a comprehensive home energy audit and rebate assistance through EmPOWER Maryland.
Home Energy Audits
Our BPI-certified auditors identify energy inefficiencies using blower door tests and infrared cameras. We provide actionable recommendations to enhance comfort, reduce costs, and qualify for state incentives, ensuring a data-driven approach to home performance.
Emergency Repairs
Available nights, weekends, and holidays, our team resolves urgent HVAC and plumbing issues promptly. With same-day service and a BBB A+ rating, we guarantee reliable emergency support for residential and commercial clients in Maryland.
People
Michael Giangrandi
Founder & President
Michael Giangrandi founded A.J. Michaels in 1978 and has led the companys growth into a trusted HVAC and home performance leader. With decades of industry experience, he emphasizes innovation, customer-centric solutions, and community-focused values.
Jim Blake
Senior Technician
Jim Blake brings extensive expertise in HVAC repair and installation, earning recognition for professionalism and technical skill. His commitment to quality service has made him a trusted representative of A.J. Michaels standards.
Ryan Small
Team Lead
Ryan Small oversees critical projects at A.J. Michaels, combining technical mastery with customer-focused service. His leadership ensures efficient, high-quality solutions for residential and commercial clients across Maryland.
Questions
What services does A.J. Michaels offer?
We provide HVAC, plumbing, duct sealing, home energy audits, and emergency services for residential and commercial clients in Baltimore and Annapolis.
Are financing options available?
Yes, we offer energy loan financing and 0% interest plans to make heating and cooling upgrades affordable for homeowners.
Do you provide emergency service?
Yes, our 24/7 emergency service ensures prompt support for HVAC and plumbing issues, with no extra charges for nights or weekends.
What areas do you serve?
We serve central Maryland, including Baltimore, Annapolis, and surrounding communities, with over 45 years of local expertise.
How can I schedule a service?
Contact us at 410.435.5400 (Baltimore) or 410.573.5858 (Annapolis), or request a free estimate through our website.
What certifications does A.J. Michaels hold?
We hold Master licenses in plumbing, HVAC, and electric, alongside BPI certification and Carrier President’s Awards for excellence.
Reviews (4)
Amanda Weaver
Jun 09, 2022
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Everyone we interacted with at A.J. Michaels was amazing. Shortly after getting quotes our water heater failed. Chris, our initial contact, worked hard to get us a temporary unit and get us on the schedule. The guys who came to instal our new high efficiency boiler and water heater were amazing. They worked hard and did beautiful work. The system was in in record time and has been working flawlessly the month we've had it. We will definitely work with them again on other projects.
Stephanie Whitehurst
Jun 09, 2022
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On the Saturday before Memorial Day, I learned that my water heater had gone up. I called A.J. Michaels on Tuesday, they sent someone out to my home right away. The gentleman appears genuinely concerned about my situation. They installed a new water heater the next day. The technicians we're on time, professional and completely cleaned up the work area.
Gregg Trestman
May 23, 2022
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Cannot say enough good things about this company from their customer service to their sales team and technicians. a company with real integrity. i have been going round and round for three years with other companies for 3 years about a recurring issue that no one has been able to diagnose. spent untold dollars on parts they said failed that did not create the problem. Was told by someone to contact this company. Chris came out and looked about but did not think I needed a new system as was told by last company.
He told me he was sending his Carrier specialist out to see me. Ed came out and within an hour and a half, diagnosed and fixed a 3 year old issue with just minor parts from his truck! No problems since. That is honesty and integrity and in these difficult times, this company is a breath of fresh air. Thanks A.J. Michaels!
He told me he was sending his Carrier specialist out to see me. Ed came out and within an hour and a half, diagnosed and fixed a 3 year old issue with just minor parts from his truck! No problems since. That is honesty and integrity and in these difficult times, this company is a breath of fresh air. Thanks A.J. Michaels!
David Townsend
Apr 17, 2022
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Outstanding service, response, and professional care. Also the nicest bunch of people in the business. They have done all heating and plumbing in my home for over a decade, installed boiler, HVAC, serviced, and repaired. This is an exceptional group of folks. They have solved problems that other plumbing/heating professionals told me could not be done. For example, they installed air-conditioning system and vents in the attic of my 75 year old home when others said it was not possible.
