Call Now
Website
Call
Business Details
48 Years
experience
Emergency
services
Expert HVAC & Plumbing Services in Maryland
A J Michaels has been a trusted name in heating, cooling, plumbing, and home performance solutions since 1978. As a locally owned and family-operated business, we prioritize personalized service and technical excellence, serving residential and commercial clients across central Maryland. Our team holds Master licenses in plumbing, heating, air conditioning, and electric, alongside certifications from the Building Performance Institute and recognition by the Department of Energy.

We specialize in innovative solutions like SpacePak ductless systems and Aeroseal duct sealing, ensuring energy efficiency and comfort. With over 45 years of experience, we guarantee our work, offer 24/7 emergency service, and have earned an A+ rating from the BBB through consistent customer satisfaction.
Services
HVAC Installation Plumbing Repairs Home Energy Audits Duct Sealing Emergency Service Mini-Split Systems Water Heater Installation Commercial HVAC Home Performance Rebates Assistance
Details
  • Year established: 1978
Highlights and features
  • We have over 45 years of experience in HVAC and plumbing services.
  • Our team holds Master licenses in plumbing, heating, and HVAC.
  • We offer personalized solutions tailored to your home or business needs.
  • We guarantee our work and provide 24/7 emergency service.
  • We handle rebate paperwork and energy-saving financing programs.
Associations and certifications
  • Building Performance Institute
  • Department of Energy
  • BBB A+
  • Carrier's President's Award
What people say
Prompt emergency response Professional technicians Transparent pricing Expertise in HVAC Affordable solutions
Services
HVAC Installation
We install energy-efficient HVAC systems for residential and commercial properties, ensuring optimal comfort and reduced energy costs. Our certified technicians use advanced technology and follow strict quality standards. Customers benefit from personalized system design and long-term savings through rebates and financing programs.
Home Energy Audits
Our comprehensive audits identify energy leaks and inefficiencies using blower doors and infrared cameras. We provide actionable recommendations to improve comfort and reduce utility bills. Clients receive tailored solutions and assistance with rebate applications through Maryland's EmPOWER program.
Duct Sealing
We use Aeroseal technology to seal duct leaks, improving HVAC efficiency and indoor air quality. This service reduces energy waste by up to 30% and prevents moisture-related issues. Customers enjoy quieter systems and lower heating/cooling costs.
Emergency Plumbing
Available 24/7, our emergency plumbing service addresses leaks, clogs, and system failures promptly. Technicians carry common replacement parts for immediate fixes. Clients appreciate rapid response times and transparent pricing for urgent issues.
Mini-Split Systems
We install and service ductless mini-split systems ideal for older homes or additions. These zoned systems offer precise temperature control and energy savings. Customers benefit from expert placement and integration with existing heating systems.
People
Michael Giangrandi
President
Founder of A J Michaels with over 45 years of leadership in HVAC and energy efficiency. Advocates for local economic growth and sustainable solutions. Developed the company's training programs and community-focused service model.
Jim Blake
Supervisor
Experienced HVAC supervisor known for diagnosing complex system issues and delivering cost-effective repairs. Recognized for professionalism and technical expertise in residential and commercial projects.
Ryan Small
Technician
Certified technician specializing in emergency HVAC and plumbing services. Praised for prompt, courteous service and thorough explanations of repair processes to customers.
Questions
What services does A.J. Michaels offer?
We provide HVAC installation, plumbing repairs, home energy audits, duct sealing, emergency service, and energy-efficient financing options.
Do you offer emergency HVAC services?
Yes, we provide 24/7 emergency service for HVAC and plumbing issues in Baltimore and Annapolis.
Are financing options available?
Yes, we offer 0% financing for 18 months and help with energy-saving rebate programs.
What areas do you serve?
We serve residential and commercial clients in Baltimore, Annapolis, and surrounding areas of Maryland.
How can I schedule a home energy audit?
Call us at 410.435.5400 or use our online form to schedule a free on-site energy audit.
What certifications does A.J. Michaels hold?
We hold Master licenses in plumbing, heating, and HVAC, plus BPI certification and Carrier President's Awards.
Reviews (6)
Amanda Weaver
Jun 09, 2022 Report
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 Report
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 Report
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!
David Townsend
Apr 17, 2022 Report
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.
Anna Celenza
Apr 13, 2022 Report
Wow! I cannot say enough wonderful things about the extraordinary service and workmanship of the AJ Michaels team. From start to finish, every aspect was great! We live in an older home. The AC unit was mounted on the roof and the vibrations were incredibly noisy. They came out and moved the unit, repaired our system, and now we are soooo happy. We don't hear the AC at all. They stuck to their estimate both price and time wise. And they took great care to protect our floors and clean up after they left. Fabulous!
Bruce Wiggs
Mar 31, 2022 Report
AJ. Michaels I love there service the guys was neat they clean up after themselves and most important my friend let them in my house and she left so they was alone in my house for 4 hours and they are very trustworthy guys ask for Paul E. And his partner I forgot his name I asked Paul 900 questions and he answered allllllllllll my questions I love AJ Michaels