A.J. Michaels

Business Details

48 Years

experience

Emergency

services

Expert HVAC & Plumbing Services in Baltimore

A.J. Michaels has been a trusted leader in HVAC, plumbing, and home performance services since 1978. Founded on principles of integrity and excellence, we specialize in innovative heating, cooling, and energy efficiency solutions for 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 prioritize customer-centric service, offering 24/7 emergency support, customized solutions, and financing options to ensure affordability.

With over 45 years of local expertise, we stand behind our work with guarantees and a commitment to leveraging state and federal energy incentives. Our reputation for tackling complex projectsfrom historic homes to industrial facilitieshas earned us Carriers Presidents Award and an A+ BBB rating, solidifying our position as a community-focused, family-owned business dedicated to comfort, safety, and sustainability.

Services

HVAC Installation Plumbing Services Home Energy Audits Duct Sealing Emergency Repairs Commercial HVAC Water Heater Installation Mini-Split Systems Boiler Services Air Quality Solutions

Details

Year established: 1978

Highlights and features

Weve served Maryland since 1978 with Master-licensed HVAC, plumbing, and electrical experts.
Our BPI-certified team specializes in whole-home energy performance and diagnostics.
24/7 emergency service with no extra charges for nights or weekends.
We handle all rebate paperwork and offer 0% financing for energy-efficient upgrades.
Award-winning service recognized by Carrier and Baltimore Gas & Electric.

Associations and certifications

Building Performance Institute (BPI)
U.S. Department of Energy
BBB (A+ Rating)
Carrier Corporation (President's Award)

What people say

Straightforward and professional Amazing service at an unbelievable price Prompt and efficient Stand behind their work Expertise in complex systems

Website

Update Listing

Services

HVAC Installation

A.J. Michaels specializes in installing energy-efficient HVAC systems tailored to residential and commercial needs. Our certified technicians ensure precise installation of furnaces, heat pumps, and air conditioners, optimizing comfort and reducing energy costs. With access to manufacturer rebates and financing options, we make upgrades affordable while maintaining strict quality standards.

Home Energy Audits

Our BPI-certified auditors use advanced tools like blower doors and infrared cameras to identify energy leaks and inefficiencies. This data-driven approach allows us to recommend targeted improvementssuch as insulation upgrades or duct sealingthat can reduce utility bills by up to 50% while enhancing indoor comfort and air quality.

Emergency Repairs

A.J. Michaels provides round-the-clock emergency HVAC and plumbing repairs. Our technicians respond promptly to urgent issues like furnace failures or water leaks, using fully stocked vehicles and real-time diagnostics to resolve problems efficiently. No extra charges apply for after-hours service.

Duct Sealing

We specialize in Aeroseal duct sealing to eliminate energy loss from leaky HVAC systems. This patented process improves airflow efficiency by up to 90%, lowering utility bills and enhancing indoor air quality. Our team handles all rebate paperwork, ensuring a seamless experience for homeowners.

Commercial HVAC

A.J. Michaels designs and maintains HVAC systems for commercial properties, including retrofitting older equipment for energy savings. Our engineers address unique challenges like high-velocity systems in churches or modular installations in factories, backed by Carriers Presidents Award-winning expertise and 24/7 emergency support.

People

Michael Giangrandi

Founder & President

Michael Giangrandi founded A.J. Michaels in 1978 and has led the companys growth into a regional leader in HVAC and energy efficiency. With decades of industry experience, he emphasizes innovation, customer service, and community impact.

Jim Blake

Senior Technician

Jim Blake brings extensive expertise in HVAC repair and installation, earning praise for his professionalism and problem-solving skills. Customers highlight his ability to address complex heating and cooling challenges efficiently.

David Cease

Master Plumber/Gas Fitter

David Cease holds multiple Master licenses and oversees plumbing and gas system installations. His technical proficiency ensures compliance with state regulations and long-term system reliability for residential and commercial clients.

Questions

What services does A.J. Michaels offer?

We provide HVAC installation, plumbing services, home energy audits, duct sealing, emergency repairs, and commercial HVAC solutions.

Do you offer emergency service?

Yes, we provide 24/7 emergency HVAC and plumbing repairs with no extra charges for nights or weekends.

Are financing options available?

Yes, we offer 0% financing for energy-efficient upgrades and handle rebate paperwork to reduce upfront costs.

What areas do you serve?

We primarily serve Baltimore, Annapolis, and surrounding areas in Maryland.

How can I schedule a home energy audit?

Call us at 410.435.5400 or use our online form to schedule a free consultation and energy audit.

What certifications does A.J. Michaels hold?

Our team holds Master licenses in plumbing, HVAC, and electric, along with BPI certification and Carrier President’s Award recognition.

Reviews (4)

Write a Review

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.