Business Details
48 Years
experience
Emergency
services
Your Trusted HVAC Experts in Baltimore & Annapolis
A J Michaels has been a trusted leader in HVAC, plumbing, and home performance solutions since 1978. Founded in Baltimore, Maryland, our family-owned business combines decades of hands-on experience with cutting-edge technology to deliver energy-efficient, cost-effective systems for residential and commercial clients. Our team holds Master licenses in plumbing, heating, air conditioning, and electrical work, alongside certifications from the Building Performance Institute (BPI) and recognition from the U.S. Department of Energy.We prioritize personalized service, conducting thorough energy audits and tailored solutions to ensure comfort, safety, and sustainability. With over 45 years of local expertise, weve earned an A+ BBB rating and a reputation for integrity, innovation, and customer-centric service. Our commitment to excellence is reflected in our Carrier Presidents Award wins and partnerships with state energy programs like EmPOWER Maryland, ensuring clients benefit from rebates, financing, and industry-leading warranties.
Services
HVAC Installation
Plumbing Services
Home Energy Audits
Duct Sealing
Emergency Repairs
Commercial HVAC
Water Heater Repair
Mini-Split Systems
Boiler Services
Air Quality Solutions
Details
- Year established: 1978
Highlights and features
- Weve served Maryland since 1978 with locally owned, family-driven expertise.
- Our team holds Master licenses in plumbing, HVAC, and electrical work.
- BPI-certified energy audits identify precise solutions for efficiency and savings.
- We offer exclusive financing options and handle rebate paperwork for clients.
- 24/7 emergency service with no extra charges for nights or weekends.
Associations and certifications
- Building Performance Institute (BPI)
- U.S. Department of Energy
- Carrier Corporation
- Maryland Department of Housing and Community Development
- Baltimore Gas and Electric
What people say
Straightforward and professional
Amazing service at an unbelievable price
Prompt and courteous
Stand behind their work
Highly recommend
Services
HVAC Installation
A J Michaels specializes in installing energy-efficient HVAC systems tailored to residential and commercial needs. Our NATE-certified technicians use advanced diagnostics to recommend systems that reduce energy costs while ensuring optimal comfort. From furnaces to heat pumps, we offer Carrier products with extended warranties and handle all rebate paperwork.
Home Energy Audits
Our BPI-certified auditors use blower doors and infrared cameras to identify air leaks, insulation gaps, and safety hazards. We provide actionable reports to improve efficiency, reduce utility bills by up to 50%, and enhance indoor air quality, backed by EmPOWER Maryland rebates and financing options.
Duct Sealing
Using Aeroseal technology, we seal duct leaks to improve HVAC efficiency and indoor air quality. This minimally invasive process reduces energy loss by up to 30%, ensuring even temperature distribution and lower utility bills for Maryland homeowners and businesses.
Emergency Repairs
A J Michaels offers round-the-clock emergency HVAC and plumbing repairs. Our technicians respond promptly to critical issues like AC failures in summer or heating loss in winter, with no extra charges for after-hours service and same-day appointments guaranteed.
Commercial HVAC
We design and maintain HVAC systems for commercial properties, including retrofitting older systems and installing high-efficiency boilers. Our engineers optimize energy use for offices, restaurants, and industrial spaces, ensuring compliance with safety standards and minimizing operational downtime.
People
Michael Giangrandi
President & Founder
Michael Giangrandi founded A J Michaels in 1978 and has led its growth into a trusted HVAC authority. With decades of industry experience, he prioritizes innovation and customer satisfaction, driving partnerships with energy programs and maintaining hands-on involvement in complex projects.
Jim Blake
Senior Technician
Jim Blake brings extensive expertise in HVAC repair and installation, earning praise for his professionalism and technical skill. He specializes in resolving complex heating and cooling issues, ensuring systems operate efficiently and reliably for residential and commercial clients.
David Cease
Master Plumber/Electrician
David Cease holds multiple Master licenses and oversees plumbing and electrical services at A J Michaels. His technical proficiency ensures code-compliant, durable installations, from water heaters to radiant heating systems, supporting the companys commitment to comprehensive home performance solutions.
Questions
What HVAC services does A.J. Michaels offer?
We provide installation, repair, and maintenance for furnaces, heat pumps, air conditioners, boilers, and mini-split systems, along with energy audits and duct sealing.
Do you offer emergency HVAC service?
Yes, we provide 24/7 emergency repairs with no extra charges for nights or weekends, ensuring prompt solutions for critical heating or cooling failures.
Are financing options available?
Yes, we offer 0% financing for 18 months and assist with rebate paperwork through Maryland’s EmPOWER program to make upgrades affordable.
What certifications does A.J. Michaels hold?
Our team holds Master licenses in plumbing, HVAC, and electrical work, alongside BPI certification for energy audits and partnerships with Carrier and the U.S. Department of Energy.
Do you service commercial properties?
Yes, we specialize in commercial HVAC systems, including high-efficiency boilers, chilled water systems, and retrofits for offices, restaurants, and industrial spaces.
What sets A.J. Michaels apart from competitors?
We’re locally owned, use in-house technicians (no subcontractors), offer guaranteed work, and combine 45+ years of experience with energy-saving expertise and 24/7 emergency service.
Reviews (3)
Jami Lebowitz
Jan 12, 2018
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Service was beyond prompt! Chris Darr came out almost immediately to do our estimate. He was thorough, and listened to our concerns. Beyond that, he was kind, personable, and very easy to talk to! The service ended up being sooner than we'd expected - which was great! The two men that came to perform our needed work were also exceptionally friendly. Those two went above and beyond to get our washer/dryer to code and hooked up. I hope this review is relayed to all involved with our job. I cannot say enough good things! Thank you!
Darryl Jones
Feb 04, 2017
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They were substandard at best. I had to sue then for the money to fix the substandard work that they did. I had the sewer line redone by a reputable plumber just so that I can sell the property. I have lost aproxamatly $20K In potential rent and now have to sell it just to break even.
James Wilson
Sep 01, 2015
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Just received my new carrier furnace. Everyone I came in contact with was very professional and gracious. Would recommend them to everyone.
