Air Conditioning & Heating

A Comprehensive Full Services Provider


The Value of Routine Maintenance

What makes maintenance so important for heating and air conditioning equipment is that it is preventative. In other words, a routine scheduled maintenance is designed to prevent the occurrence of break downs and costly emergency service calls and repairs by catching signs of failure early.

Just like how the owner’s manual for your vehicle tells you when to bring it in to your mechanic – your HVAC equipment also requires routine preventative maintenance. A trained and certified technician knows what is important to your system and has a unique list of components to check and readings to take based on the type of heating and cooling equipment you have.


Some maintenance tasks take minimal effort and expertise such as changing air filters. Most other tasks require trade knowledge, experience, and tools that only a certified technician will have.

Having a certified technician perform the preventative maintenance on the system gives the homeowner great value:

1. All the major system components have been given a thorough inspection ensuring that there are no existing signs of a problem which if found early can prevent major component damage.

2. The system has been switched over and is now ready to operate throughout the upcoming season.

3. The longevity of the system will likely be increased – thus potentially saving money and reducing cost of ownership by reducing the frequency of costly repairs and replacement costs.

4. The equipment warranty will be preserved to help in the event a part does fail during the covered period.

Following or Exceeding Industry Standards

When performing preventative maintenance on any system, we follow the manufacturer’s maintenance guidelines and also follow national industry standards as outlined by the Air Conditioning Contractors of America (ACCA) in its Standard 4 “Maintenance of Residential HVAC Systems”.

HVAC Technician performing maintenance on a gas furnace

A technician performs preventative maintenance on a gas furnace.

Membership Program

Become a Priority Customer


Start the signup process below by emailing us your contact information and the type of equipment you have. One of our maintenance specialists will contact you soon to recommend the perfect match of maintenance tasks for your particular equipment requirements. Leave the maintenance to the pros and relax knowing that your equipment will have routine checks to keep you accurately informed of the condition of your system.


***ALSO – By signing up for a maintenance program, you instantly become a PRIORITY CUSTOMER and receive automatic discounted pricing. Sign up today.



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We are OPEN for business but PLEASE READ: Coronavirus Announcement

Coronavirus Update

Dear All-Air Systems Customer,

The health of our customers and our team are our top priority.

Our team works diligently every day to provide a clean and comfortable environment for our customers, therefore our operations remain largely unchanged. All our dedicated team members have been instructed to monitor their own health very closely. If a team member is showing any symptoms of any illness, they have been advised to seek medical attention and treatment and not to report to work until their symptoms have resolved.

If you fear you have been exposed to COVID-19 or are concerned about your personal health and have an upcoming appointment, please let us know. You may reach us at our office at 410-877-6100, via email at or through our website at

Rest assured you can count on us for all of your HVAC service and replacement needs.

Wishing you the best of health!

Andrew Knicley

All-Air Systems