Business Details
48 Years
experience
Emergency
services
Your Trusted HVAC Partner in Baltimore & Annapolis
A J Michaels is a locally owned and family-operated business serving central Maryland since 1978. With over four decades of experience, we specialize in heating, cooling, plumbing, and home performance solutions for residential and commercial clients. Our team of certified professionals holds Master licenses in plumbing, heating, air conditioning, and electric, ensuring expertise across all services.We prioritize customer satisfaction by avoiding subcontractors, offering 24/7 emergency support, and guaranteeing all work. Recognized by the Department of Energy and Carrier Corporation, our commitment to energy efficiency and innovation has earned us a trusted reputation through thousands of referrals and an A+ BBB rating.
Services
HVAC Installation
Plumbing Services
Home Energy Audits
Duct Sealing
Mini-Split Systems
Emergency Repairs
Water Heater Installation
Commercial HVAC
Air Quality Solutions
Financing Options
Details
- Year established: 1978
Highlights and features
- Weve served Maryland since 1978 with locally owned, family-operated reliability.
- Our engineers hold Master licenses in plumbing, HVAC, and electrical systems.
- We guarantee all work with no extra charges for 24/7 emergency service.
- Recognized by the U.S. Department of Energy for energy-saving achievements.
- We design custom solutions without brand or fuel type restrictions.
Associations and certifications
- Building Performance Institute (BPI)
- Carrier Corporation (President's Award)
- Maryland Home Improvement Commission (MHIC #11461)
- Baltimore Gas and Electric
- U.S. Department of Energy Century Club Award
What people say
24/7 emergency support
Competitive pricing
Expertise with historic homes
Lifetime warranties
Professional technicians
Services
HVAC Installation
We install high-efficiency HVAC systems tailored to residential and commercial needs. Our solutions reduce energy costs while ensuring comfort. With BPI-certified auditors and proprietary SpacePak technology, we specialize in historic buildings and complex spaces. All installations include lifetime maintenance support and energy-saving guarantees.
Home Energy Audits
Our BPI-certified auditors use infrared cameras and blower door tests to identify energy leaks. Clients receive a prioritized action plan with rebates up to $7,500 through EmPOWER Maryland. The $100 audit (valued at $400) includes a personalized consultation to optimize home efficiency and comfort.
Plumbing Services
We handle residential and commercial plumbing from emergency repairs to full system replacements. Our Master Plumbers address leaks, water heaters, and backflow issues using jet-blasting technology. All work includes same-day service guarantees and manufacturer warranties for parts and labor.
Duct Sealing
Our Aeroseal technology seals duct leaks from within, improving HVAC efficiency by up to 40%. This non-invasive process takes 6 hours and includes a 10-year guarantee. Were the only Maryland contractor offering this patented solution for residential warm-air systems.
Mini-Split Systems
We install energy-efficient mini-split systems for homes without ductwork. Our zoned solutions allow individual room temperature control. Certified technicians handle multi-zone setups in historic properties and modern homes, with financing options available for qualifying customers.
People
Michael Giangrandi
Founder & President
Michael founded A J Michaels in 1978 and has led its growth into Maryland's premier HVAC firm. With decades of industry experience, he pioneered energy-efficient solutions recognized by the U.S. Department of Energy. His leadership emphasizes technical excellence and community-focused service.
Jim Blake
Senior Technician
Jim has over 25 years of HVAC expertise, specializing in complex repairs and system conversions. Certified in both heating and cooling technologies, hes known for resolving challenging installations in historic buildings while maintaining energy efficiency standards.
Ryan Small
Service Manager
Ryan oversees daily operations and customer service excellence. With a background in mechanical engineering, he ensures all projects meet strict quality benchmarks. His team manages over 1,000 annual service calls with 98% client satisfaction ratings.
Questions
Do you offer emergency HVAC services?
Yes, we provide 24/7 emergency support with no extra charges for nights, weekends, or holidays.
Can you service older HVAC systems?
Yes, we specialize in maintaining and upgrading systems in historic buildings and older homes.
Are financing options available?
Yes, we offer financing plans for qualifying HVAC, plumbing, and energy efficiency projects.
Do you guarantee your work?
All services include lifetime guarantees with no hidden fees or unexpected charges.
What areas do you serve?
We serve Baltimore, Annapolis, and surrounding Maryland areas within a 50-mile radius.
Are energy rebates available?
Yes, we help clients access EmPOWER Maryland rebates up to $7,500 for energy-efficient upgrades.
