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. As a family-owned, locally operated business, we prioritize integrity, expertise, and customer satisfaction. Our team holds Master licenses in plumbing, heating, air conditioning, and electrical work, and we are certified by the Building Performance Institute for whole-home energy solutions. Recognized by the Department of Energy, Carrier, and Baltimore Gas and Electric for excellence, we combine advanced training with cutting-edge technology to deliver energy-efficient, cost-effective systems.

We guarantee all work, offer 24/7 emergency service, and ensure transparency in every project, from residential repairs to complex commercial installations. Our commitment to community and sustainability drives us to exceed industry standards, making us the preferred choice for Maryland homeowners and businesses.

Services

HVAC Installation Plumbing Repairs Duct Sealing Home Energy Audits Mini-Split Systems Water Heater Services Commercial HVAC Emergency Service Radiant Floor Heating Rebates & Financing

Details

Year established: 1978

Highlights and features

We hold Master licenses in plumbing, heating, and HVAC for unmatched expertise.
Our team undergoes continuous training to stay ahead of industry innovations.
We guarantee all work and offer 24/7 emergency service with no extra charges.
We engineer energy-efficient solutions that reduce costs by up to 75%.
Recognized by Carrier, the Department of Energy, and local utilities for excellence.

Associations and certifications

Building Performance Institute

What people say

Exceeded my expectations Professional and courteous Unbelievable price Stand behind their work Prompt and efficient

Website

Update Listing

Services

HVAC Installation

We install energy-efficient HVAC systems tailored to residential and commercial needs. Our solutions reduce energy costs by up to 75% while ensuring year-round comfort. With Master-certified technicians and partnerships with leading manufacturers, we deliver reliable, code-compliant installations. Our process includes personalized consultations to recommend systems that align with your budget and efficiency goals.

Home Energy Audits

Our BPI-certified auditors identify inefficiencies using blower doors and infrared cameras. We analyze energy bills, detect air leaks, and assess indoor air quality to create actionable plans. This data-driven approach ensures targeted upgrades that enhance comfort and reduce utility bills by up to 50%, with rebate assistance included.

Duct Sealing

We use Aeroseal technology to seal duct leaks from the inside, improving HVAC efficiency by up to 40%. This minimally invasive method addresses hidden gaps in ductwork, reducing energy waste and enhancing indoor air quality. Our team ensures lasting results with post-service testing and rebate documentation.

Plumbing Services

From emergency leak repairs to full-system replacements, our Master plumbers handle residential and commercial needs. We specialize in jet blasting for drain clearing, water heater installations, and backflow prevention. All work adheres to local codes, with a focus on durability and minimizing disruption to your property.

Mini-Split Systems

We design and install ductless mini-split systems for homes without traditional ductwork. These zoned solutions offer precise temperature control and energy savings of up to 30%. Our technicians ensure seamless integration with existing systems, including high-velocity installations for older homes.

People

Michael Giangrandi

Founder & President

With over 40 years of leadership, Michael Giangrandi founded A.J. Michaels on principles of integrity and technical excellence. He oversees strategic growth while ensuring adherence to the companys commitment to quality and customer-first service.

Jim Blake

Senior Technician

Jim Blake brings decades of HVAC expertise, specializing in complex repairs and energy-efficient upgrades. His dedication to precision and customer education has made him a trusted figure among residential and commercial clients.

Questions

What services does A.J. Michaels offer?

We provide HVAC installation and repair, plumbing services, duct sealing, home energy audits, mini-split systems, and commercial solutions. Emergency service is available 24/7.

Do you offer financing options?

Yes, we offer 0% financing for 18 months and assistance with rebates through the EmPOWER Maryland program to make upgrades affordable.

Are you available for emergencies?

Yes, our 24/7 emergency service ensures prompt assistance for HVAC, plumbing, or heating failures with no extra charges for nights or weekends.

What areas do you serve?

We serve Baltimore, Annapolis, and central Maryland, with a focus on residential and commercial clients in the greater Maryland area.

What certifications do your technicians hold?

Our team holds Master licenses in plumbing, heating, HVAC, and electrical work, along with BPI certification for home energy performance.

Reviews (5)

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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!