We specialize in maintenance, repair and service for almost any residential HVAC system. Whether you need your heat pump serviced, your A/C fixed ASAP or a system diagnostic, A.J. Michaels has the experts.

Our recommendations and estimates are customized to you and your home’s needs. Our engineering expertise, broad industry knowledge and commitment to quality ensure that your HVAC system will provide energy efficiency and home comfort for years to come.

Fill out the form below to request service or to receive a FREE ESTIMATE on your system repair and we will be in touch shortly to schedule your appointment.

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FACTORS THAT REDUCE FURNACE LIFE EXPECTANCY

As we’ve discussed, furnace life expectancy can vary quite a bit. Some of the factors that affect your furnace’s life are out of your control, such as sizing and installation of your furnace which are typically determined by your HVAC contractor. Other factors, such as maintenance and thermostat settings are in your hands. Let’s take a closer look:

FURNACE SIZE

It’s important to have an appropriately sized system for your home.

Shorter cycles create more wear and tear on the parts of a furnace, so if the system is larger than necessary, it will turn on and off too quickly.

Furnaces that are too small for the space may stay on too long and struggle to heat your home, which can also add wear and tear on parts.

POOR FURNACE INSTALLATION

Poor installation can affect the lifespan of your furnace for a number of reasons. This is why it’s so important to select a qualified HVAC professional, like your local Carrier expert, to install your system.

Poorly designed, sized, or sealed ductwork impacting airflow can affect your comfort and system efficiency

Poor drainage system for high efficiency furnaces

Incorrectly installed fuel lines

LACK OF ROUTINE MAINTENANCE

When you ignore recommended maintenance, dirty buildup on heat exchangers, burners, fan blades can reduce you’re the life of your furnace in a number of ways:

Restricted airflow from dirty filters can make the system work harder

Imbalanced fans can affect the life of motors

Less efficient heat transfer from heat exchangers can make the system work harder

THERMOSTAT SETTINGS

Your personal comfort preferences can affect the life expectancy of your gas furnace. The U.S. Department of energy recommends setting your heating system thermostat at 68° Fahrenheit during the winter for both energy efficiency and adequate comfort.1 Keep in mind that a thermostat set too high or too low can make the system run more frequently, which can reduce its lifespan.

Competitor Comparison Chart

  Small Guys A.J. Michaels Big Guys
Family Owned
Locally Owned
Keeps Revenue in Maryland and Invests in its Employees and Community
Certified Technicians with Average of 15 Years Experience
Holds Masters Licenses in Plumbing, Heating, Air Conditioning and Electric
Has Longevity…Been in Business Since 1978
Does not Sub Out Work
Offers Real, not Fake, Manufacturer and Company Rebates
Provides Customized, not Pre-packaged, Solutions
Utilizes the "House as a System" Approach for Diagnosis and Solutions
Offers Financing Options
Offers Fully Warrantied Work
Offers 100% Satisfaction Guarantee of Work
Is a Building Professionals Institute (BPI) Certified Home Performance Contractor
Secures and Handles the Entire Rebate Process for Customers
Recognized 8 Straight Years by BG&E for Outstanding Achievement in the Installation of A/C Systems, Furnaces, Hot Water Boilers, Steam Boilers and Heat Pumps
Honored by Department of Housing and Community Development for our Dedication to Expanding Energy Efficiency in Maryland
Recognized by the U.S. Department of Energy and the U.S. Environmental Protection Agency as a Home Performance with Energy Star Century Club Award winner
Participating Contractor with the BGE and Delmarva Power SmartEnergy Savers Programs
Offers Residential and Commercial HVAC, A/C, Heating and Plumbing Services
Owner/CEO is also the Chair of the Maryland Alliance of Energy Contractors
Has an A+ Rating with the Better Business Bureau

© A.J. Michaels. All rights reserved.

Our concerns about the Coronavirus are no different than yours and we are very aware of our responsibilities and the measures we need to take to protect you, your families, and our employees. We are following current Center for Disease Control guidelines.  

We're here to serve your needs -- safely.

Our concerns about the Coronavirus are no different than yours and we are very aware of our responsibilities and the measures we need to take to protect you, your families, and our employees. We are following current  Center for Disease Control guidelines.  

We're here to serve your needs -- safely.

A.J. Michaels is a Carrier Authorized dealer

HVAC Experts

A.J. Michaels can install, repair or replace your home’s HVAC system – which will immediately cut your energy expenses. Central air, multi-zone HVAC, ductless, anywhere in the Baltimore region, we can handle it.

Residential

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Tune Ups Extend Your HVAC Unit's Lifespan

Semi/Annual maintenance

A.J. Michaels

AC, Heating, Plumbing and Home Performance

Emergency, Same Day Service

A.J. Michaels is available whenever you need us. We do not charge extra on evenings or weekends and we offer prompt, courteous emergency responses.

Advanced Technology & Diagnostics

A.J. Michaels’s expertise and knowledge, combined with Carrier’s real-time, remote system analysis and troubleshooting systems, allow you to make the best energy system decision for your home.

A Higher Industry Standard

Not only do business owners throughout the Baltimore area recognize the quality of our work, but so does the industry. BG&E named us an award-winning contractor eight consecutive years.

Expert Installation & Repair

Licensed and bonded technicians at A.J. Michaels are the best in the business. We meet and exceed state requirements. 

Why Choose A.J. Michaels

A.J. Michaels prides itself on getting the job done right the first time. Our technicians take the time to explain the problem, provide repair and financing options, and offer tips on how to avoid future issues.

A.J. Michaels is a family-owned and operated, award-winning company, providing service throughout the Baltimore region.

A.J. Michaels recently installed central air in my older home. It was a positive experience from start to finish. Having so many hard-working and professional people in the same company tells me a lot about your business. The system has changed the whole atmosphere in my house. It was a lot more than I expected in terms of work, and the sheer amount of parts and pieces that went into my house. Thank you for a professional and positive experience.

W. Jaccis
Baltimore, MD

We're here for you seven days a week with no extra charges for nights or weekends.

Financing Through A.J. Michaels

A.J. Michaels offers several financing options to fit your residential or commercial needs. Along with providing a practical solution for your home HVAC needs, our estimators can provide you with a financing plan tailored to you.  We currently offer the following lending options:

  • 0% APR on varying term lengths
  • Low-rate, fixed-payment loans 
  • A new $10,000 grant program, even if you've had credit problems

Locally owned and operated since 1978

Financing & rebates available

All our work is guaranteed

Engineering expertise for complex systems and situations

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Any Request, Any Unit

There’s no limit to the range of problems or unit types our expert technicians can service and maintain. From complicated units in historic homes to soaring energy bills, we can confidently correct, fix and even prevent problems and increase efficiency in your home’s HVAC system.

Our Google Reviews

Carrier Authorized Dealer

At A.J. Michaels, we’re proud to be an official Carrier Factory Authorized Dealer and have been recognized with the Carrier Presidents Award. We take pride in providing quality Carrier products because of their technological superiority, energy efficiency and dependability. 

Issues With Your HVAC? We Can Help!

Issues With Your HVAC? We Can Help

Walk in with pre-packaged solutions or an agenda to sell you a particular product

Inflate our price to give you discounts or made-up rebates

Cut corners in installation

Use lesser quality equipment that saves a few dollars now but will cost you more in the long run

Employ salespeople working 100% on commission who'll sell you anything

Sub-out residential services

Function as a franchise with inconsistent quality of service

Send revenue out-of-state. We're locally owned and support our local economy.

Get Your Free Estimate

We Don't

Our Experts Help Ensure You Get All Available Rebates and Incentives With More Rebate Options Than Our Competitors

Select Partner of the EmPOWER Maryland Energy Efficiency Act 

Over $6,000 in Maryland and Carrier rebates

Rebates

BGE Smart Energy Savers Program Participating Contractor

Certified by the Building Performance Institute (BPI) to evaluate whole home performance

We service oil, gas, electric, furnace, ducts, boiler, steam, heat pumps and smart thermostats.

The easiest way to extend the lifespan of your HVAC system is regular planned maintenance as recommended by the manufacturer.

Tune ups

Energy efficiency audits

Duct inspection

Service Area
Serving these counties: Anne Arundel, Baltimore, Carroll, Harford, Howard, Queen Anne's  

Serving these cities: Annapolis, Arnold, Brooklyn Park, Crofton, Crownsville, Deale, Edgewater, Ferndale, Fort Meade, Glen Burnie, Hanover, Jessup, Linthicum, 
Mayo, Odenton, Pasadena, Severn, Severna Park, Shady Side, Annapolis Junction, Arbutus, Baltimore, Catonsville, Cockeysville, Dundalk, Edgemere, Essex, 
Garrison, Gwynn Oak, Halethorpe, Lansdowne, Lochearn, Lutherville, Middle River,
 Milford Mill, Overlea, Owings Mills, Parkville, Perry Hall, Pikesville, Randallstown, Reisterstown, Rosedale, Sparrows Point, Towson, White Marsh, Woodlawn, 
Eldersburg, Finksburg, Hampstead, Manchester, Mount Airy, New Windsor, Sykesville, Taneytown, Union Bridge, Westminster, Aberdeen, Bel Air, Darlington,
 Edgewood, Fallston, Forest Hill, Havre de Grace, Jarrettsville,  Joppa, Perryman, Pylesville, Street, Clarksville, Columbia, Dayton, Elkridge, Ellicott City, 
Fulton, Glenelg, Glenwood, Highland, Jessup, Laurel, Lisbon, Marriottsville, Savage, West Friendship, Woodbine, Centreville, Chester, Church Hill, Grasonville,
 Kent Island, Queenstown, Stevensville
Service Area
Serving these counties: Anne Arundel, Baltimore, Carroll, Harford, Howard, Queen Anne's  

Serving these cities: Annapolis, Arnold, Brooklyn Park, Crofton, Crownsville, Deale, Edgewater, Ferndale, Fort Meade, Glen Burnie, 
Hanover, Jessup, Linthicum, Mayo, Odenton, Pasadena, Severn, Severna Park, Shady Side, Annapolis Junction, Arbutus, Baltimore, 
Catonsville, Cockeysville, Dundalk, Edgemere, Essex, Garrison, Gwynn Oak, Halethorpe, Lansdowne, Lochearn, Lutherville, 
Middle River, Milford Mill, Overlea, Owings Mills, Parkville, Perry Hall, Pikesville, Randallstown, Reisterstown, Rosedale, 
Sparrows Point, Towson, White Marsh, Woodlawn, Eldersburg, Finksburg, Hampstead, Manchester, Mount Airy, New Windsor, 
Sykesville, Taneytown, Union Bridge, Westminster, Aberdeen, Bel Air, Darlington, Edgewood, Fallston, Forest Hill, Havre de Grace,
 Jarrettsville,  Joppa, Perryman, Pylesville, Street, Clarksville, Columbia, Dayton, Elkridge, Ellicott City, Fulton, Glenelg, Glenwood, 
Highland, Jessup, Laurel, Lisbon, Marriottsville, Savage, West Friendship, Woodbine, Centreville, Chester, Church Hill, Grasonville,
 Kent Island, Queenstown, Stevensville
Serving these counties: Anne Arundel, Baltimore, 
Carroll, Harford, Howard, Queen Anne's  

Serving these cities: Annapolis, Arnold, Brooklyn Park, Crofton, Crownsville, Deale, Edgewater, Ferndale, Fort Meade, Glen Burnie, 
Hanover, Jessup, Linthicum, Mayo, Odenton, Pasadena, Severn, Severna Park, Shady Side, Annapolis Junction, Arbutus, Baltimore, 
Catonsville, Cockeysville, Dundalk, Edgemere, Essex, Garrison, Gwynn Oak, Halethorpe, Lansdowne, Lochearn, Lutherville, 
Middle River, Milford Mill, Overlea, Owings Mills, Parkville, Perry Hall, Pikesville, Randallstown, Reisterstown, Rosedale, 
Sparrows Point, Towson, White Marsh, Woodlawn, Eldersburg, Finksburg, Hampstead, Manchester, Mount Airy, New Windsor, 
Sykesville, Taneytown, Union Bridge, Westminster, Aberdeen, Bel Air, Darlington, Edgewood, Fallston, Forest Hill, Havre de Grace,
 Jarrettsville,  Joppa, Perryman, Pylesville, Street, Clarksville, Columbia, Dayton, Elkridge, Ellicott City, Fulton, Glenelg, Glenwood, 
Highland, Jessup, Laurel, Lisbon, Marriottsville, Savage, West Friendship, Woodbine, Centreville, Chester, Church Hill, Grasonville,
 Kent Island, Queenstown, Stevensville