All Air Systems

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Baltimore Office

18 Lauriann Ct. Parkton, MD 21120

Washington, D.C. Office

822 Rustic Lane. Lothian, MD 20711

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Service / Price Request

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An office staff member will respond to your inquiry same day.

Locations we Serve

We proudly serve customers from both of our convenient locations. Whether you’re in Maryland, Washington, D.C., Southern P.A., or the surrounding areas, our team is ready to provide expert mechanical services when you need them.

Frequently Asked Questions

What does a commercial HVAC service agreement cover?

Most service plans include routine maintenance and performance checks for equipment such as boilers, chillers, RTUs, and control systems. Services typically include cleaning coils, checking refrigerant levels, testing electrical components, and verifying safety controls. Repair labor and parts may be included or offered at discounted rates depending on the agreement.

Are consumable parts included in service agreements?

Consumable parts, such as filters, belts, and gaskets, are often included in standard service agreements. These items may be billed separately unless you choose a plan that specifically covers them. We’ll review your agreement with you to clarify what’s included so there are no surprises.

How often are maintenance visits scheduled?

While annual checkups are common, more comprehensive coverage includes seasonal inspections. Many clients opt for quarterly or biannual visits to maximize reliability and system efficiency. We even perform monthly quick checkups.

Why maintain HVAC equipment regularly?

Regular preventive maintenance ensures safety, maintains manufacturer warranties, keeps equipment running efficiently, and helps avoid emergency breakdowns.

What are the benefits of a service agreement?

A formal agreement brings predictable service scheduling, priority response during emergencies, and cost savings through reduced service rates and early detection of issues. It also improves energy efficiency and extends equipment lifespan.

What should I expect from a qualified HVAC technician?

Technicians should be certified, insured, and experienced with commercial systems. Certifications with equipment manufacturers and compliance with EPA Section 608 for refrigerant handling are good indicators of professionalism and expertise.

They Trust us

Our portfolio covers a wide range of projects from government buildings to institutions to private companies.