AG Heating & Cooling in Baltimore: Licensed HVAC for New Installations and Seasonal Maintenance
AG Heating & Cooling is a licensed HVAC contractor serving Baltimore with a focus on residential system replacement, new installations, and maintenance contracts for homeowners who want predictable service schedules rather than emergency-only calls.
What AG Heating & Cooling actually is
A full-service HVAC provider operating as a licensed, bonded contractor in Baltimore. The company handles furnace and air conditioning replacements, new system design and installation, seasonal tune-ups, and repair work for existing equipment. They work with homeowners on both single-family houses and small multifamily properties, and they conduct load calculations before recommending equipment to ensure systems match the heating and cooling demands of a specific house rather than oversizing or undersizing by default.
Services and pricing
AG Heating & Cooling offers three core service tiers:
Installation and replacement: New furnace or air conditioning systems typically run $3,500 to $6,500 depending on the equipment tier, ductwork condition, and whether both heating and cooling are being replaced. A load calculation, required before quoting, costs $150 to $300 but is often credited back if you proceed with installation. High-efficiency units (SEER ratings of 16 or higher for AC, AFUE ratings above 95% for gas furnaces) fall toward the upper end. Standard-efficiency replacements cost less upfront but run higher operating costs over the system's 15- to 20-year life. Permits, which Baltimore County and the city both require for furnace and AC replacements, are included in their quote.
Maintenance contracts: Seasonal tune-ups (one spring for AC, one fall for heat) run $125 to $200 per visit or $200 to $350 annually for a two-visit plan. These contracts typically include a priority scheduling window and a 10% discount on repairs, a meaningful savings if you need work outside the contract scope during peak season.
Emergency and repair service: Same-day or next-day visits cost $100 to $150 for the service call, with labor billed at $85 to $120 per hour depending on job complexity. Parts are marked up 15% to 25% above wholesale cost, standard for Baltimore-area contractors.
Verification note: pricing shifts seasonally; confirm current rates before booking.
How AG Heating & Cooling compares to other Baltimore HVAC options
Baltimore has three main contractor profiles: national franchises (like Comfort Systems USA or Heating & Air Conditioning Express), locally established multi-truck operations, and independent solo operators. AG Heating & Cooling sits in the middle tier: established enough to handle complex jobs and maintain inventory, small enough that owners are often on-site and decisions happen quickly.
Franchises typically charge 15% to 25% more per service call but offer rigid scheduling, marketing-backed warranties, and less negotiating room on labor rates. Independent operators undercut by $30 to $50 per hour but may have longer wait times and no backup if the owner is unavailable. AG's model suits homeowners who want a named, local business with skin in the game but without franchise overhead built into the bill.
For replacement-focused jobs (new furnace or AC), AG's load-calculation process is practical; many contractors skip this and install units based on existing system size, which can lead to inefficiency. If you're replacing 20-year-old equipment, the existing system's tonnage is often oversized for modern insulation standards, and a load calculation catches this. Compare this upfront to contractors who waive the load calc or bundle it invisibly; you may get a unit that costs more to run than necessary.
For maintenance-only customers, independent HVAC techs in Baltimore often charge less per visit ($80 to $120) but don't guarantee availability during heating or cooling season. AG's contract option provides predictability, useful if you want to avoid August or January emergency calls.
Who AG Heating & Cooling suits and who it does not
Choose AG Heating & Cooling if you own a Baltimore single-family home or duplex, want a system designed for your house's actual heat loss and gain, prefer a local contractor with a physical location, or need both installation and ongoing maintenance under one company. The maintenance contracts work well for homeowners who've had emergency calls before and want to reduce that risk.
Skip AG if you're renting (landlord's decision), have a very new system under manufacturer warranty (dealer service may be required), need same-hour emergency service on a weekend (response time depends on current job load), or are looking for the lowest-cost repair call (independent operators in Baltimore will undercut by 10% to 20%).
What the first visit involves
For a new installation, the process starts with a load calculation. A technician measures your home's square footage, insulation levels, window orientation, and air leakage points, then inputs data into ACCA Manual J or similar software to determine the heating and cooling capacity needed. This takes 30 to 45 minutes and results in a written load calculation, which AG provides to you. A detailed quote follows, including equipment specs, labor, permits, and financing options if available. Installation itself (furnace or AC replacement) typically takes one full day for a single unit, two days for a full system swap.
For maintenance or repair calls, the technician arrives at your scheduled window, diagnoses the issue, and provides a phone or written estimate before starting work beyond the service call charge. Most spring and fall tune-ups take 45 minutes to an hour.
Hours, parking, and logistics
AG Heating & Cooling operates Monday through Friday, 8 a.m. to 5 p.m., with limited Saturday availability for emergency service calls. Emergency calls outside business hours are routed to an answering service; response depends on availability. They maintain a warehouse and office in Baltimore (specific address recommended through their website or phone inquiry), with no parking constraints for residential calls at your home.
Installation work requires clear access to your furnace and air handler locations, typically in the basement or utility closet. If ductwork needs replacement or repair, this can extend the timeline. Discuss site prep when booking.
AG Heating & Cooling has sustained operations in Baltimore long enough to understand local building code, seasonal demand swings, and the particular humidity and temperature challenges of the Mid-Atlantic. For a straightforward replacement or regular maintenance, they're a practical match for Baltimore homeowners who want local expertise without franchise layers.
