Top 7 HVAC companies in Baltimore, Maryland

How to choose

Baltimore County sits in IECC zone 4A with 4,400 heating degree days and 1,300 cooling degree days. Equipment must handle humid summers and cold winters while meeting state licensing rules and local permit requirements. Review volume on public listings remains modest, so a Bayesian adjustment pulls every raw rating toward the national mean of 4.764. Homeowners should verify the HVACR license through the Maryland Department of Labor lookup and confirm MHIC registration before signing any contract.

The shortlist

This shortlist is built from public listing data, not a review of work performed. Companies are ranked by a Bayesian-adjusted rating that pulls each star rating toward the national mean until review counts are large enough to stand alone. Small tie-breakers favor a public website, HVAC-specialist category listing, and published 24/7 availability.

A.I.R LLC, Advanced Indoor Resources

A.I.R LLC, Advanced Indoor Resources holds a 5.0 raw rating from 6 reviews that the model adjusts downward to 4.843 because the count is still small. The firm lists its address at 1030 N.Charles Street, N Charles St, Baltimore, MD 21201 and can be reached at (410) 382-2420. It appears under the general-contractor category and does not advertise round-the-clock service. The 0.079-point drop from raw to adjusted score reflects the limited sample size relative to the national mean. These numbers give no information on actual installation quality or callback rates.

Heating and Air Conditioning Baltimore

Heating and Air Conditioning Baltimore shows a 5.0 raw rating from 13 reviews, adjusted to 4.835. Its address is 2481 Frederick Ave, Baltimore, MD 21223 and the listed phone is (443) 792-8958. The general-contractor listing and lack of 24/7 hours place it behind the first firm despite a higher review count. The adjustment of 0.165 points downward occurs because even 13 reviews remain modest against the national mean. The data cannot reveal whether the firm maintains its own installation crews or subcontracts.

HVAC Heating And Cooling Company in Baltimore

HVAC Heating And Cooling Company in Baltimore records a 5.0 raw rating from 8 reviews, adjusted to 4.814. The address is 6565 Reisterstown Rd, Baltimore, MD 21215 and the phone number is (443) 909-4123. Operating as a general contractor without 24/7 availability, it sits below the prior two entries. Its adjusted score sits 0.05 points above the national mean because the small review count still pulls the rating downward. The figures supply no detail on parts sourcing or warranty handling.

HVAC Services in Baltimore: Cooling & Heating Inc

HVAC Services in Baltimore: Cooling & Heating Inc carries a 5.0 raw rating from 6 reviews, adjusted to 4.803. The address is 2118 MD-139, Baltimore, MD 21218 and the contact number is (443) 205-6986. Listed only as a general contractor and without 24/7 service, it ranks fourth. The 0.039-point downward adjustment from raw score reflects the same limited review volume seen in the top entry. Nothing in the numbers indicates typical job duration or crew size.

Heating & Air Conditioning

Heating & Air Conditioning shows a 5.0 raw rating from 6 reviews, adjusted to 4.803. Its address is 5947 Belair Rd, Baltimore, MD 21206. No phone number appears in the listing. Categorized as a general contractor without 24/7 hours, it shares the same adjusted score as the firm above it. The 0.039-point movement toward the national mean occurs for the same reason as its neighbor. The absence of a published phone limits direct comparison on responsiveness.

Glen Heating & Cooling Baltimore

Glen Heating & Cooling Baltimore holds a 5.0 raw rating from a single review, adjusted to 4.772. The address is 2504 Broening Hwy, Baltimore, MD 21224 and the phone is (301) 701-2175. As a general contractor without 24/7 availability, its low review count produces the largest downward adjustment of 0.228 points. The single review supplies almost no statistical weight, so the numbers cannot speak to consistency across jobs.

Heating and Cooling Services in Baltimore

Heating and Cooling Services in Baltimore records a 4.3 raw rating from 9 reviews, adjusted upward to 4.657. The address is 2111 MD-139, Baltimore, MD 21218 and the phone number is (667) 260-1725. Listed as a general contractor without 24/7 service, it ranks last because its raw score sits below the national mean. The 0.357-point upward adjustment occurs precisely because the modest review count pulls the rating toward 4.764. The data cannot show whether recent performance has improved since the reviews were posted.

Installed costs

A typical full-system installation in Baltimore falls between $10,100 and $12,300 according to one dataset, while 2025 invoiced averages reached $21,474 with an upper quartile of $30,000. Labor is billed at $140 per hour and permit fees range from $150 to $500. The two sources disagree on realized totals, which is itself useful information for budgeting. Both figures place Baltimore in the high-cost tier nationally. Homeowners should request itemized quotes that separate equipment, labor and permit costs.

Licensing and permits

Maryland issues HVACR licenses at the state level through the Maryland Board of Heating, Ventilation, Air Conditioning and Refrigeration Contractors within the Department of Labor. License classes include Master HVACR Contractor, Master Restricted Contractor and Limited Contractor. The state requires general liability coverage of at least $300,000 and property damage liability of at least $100,000, for a combined minimum of $400,000. Permits are not uniform; county and municipal building departments set their own rules, and Baltimore City requires a separate mechanical permit for residential changeouts. The Board publishes a county licenses and permits reference for further checking.

Incentives

Maryland’s HERO and HEAR programs remain conditionally approved with an administrator RFP issued; a planned $8,000 heat-pump rebate is listed. EmPOWER Maryland utility rebates range from $300 to $1,500 and require use of a participating contractor. No federal residential tax credit for air-source heat pumps exists in 2026. The state’s Home Improvement Commission Guaranty Fund offers an additional layer of consumer protection not present in most states. Homeowners should therefore confirm both the HVACR license and MHIC registration before engaging any installer.

Climate

Baltimore lies in IECC zone 4A with a moist regime. Winter design temperature is 15 °F and summer design temperature is 93 °F, with humid summers. The load profile is heating-leaning mixed, supported by 4,400 heating degree days and 1,300 cooling degree days. Natural gas remains the dominant heating fuel, yet heat pumps are rated very suitable. Central air conditioning saturation is already high. Equipment sizing must account for both heating and latent cooling loads; western parts of the state reach zone 5A and require additional capacity margin.