Top 7 HVAC companies in Howard, Maryland

Cost of HVAC work in Howard County

Installed costs in Howard County sit above national averages. One data set places a typical full-system replacement at $11,200, with the observed range running from $10,100 to $12,300. A second source reports an invoiced average of $21,474 for 2025 work and an upper-quartile figure of $30,000. Labor is listed at $140 per hour. Permit fees range from $150 to $500. The two cost sources diverge sharply, indicating that project scope, equipment tier and site conditions drive substantial price differences.

The shortlist

Companies are ranked by a Bayesian-adjusted rating: a company's star rating is pulled toward the national mean until it has enough reviews to stand on its own, so a 5.0 from four customers does not outrank a 4.9 from two hundred. Small tie-breakers apply for a public website, for being listed as an HVAC specialist rather than a general contractor, and for published 24/7 availability. This is a shortlist built from public listing data, not a review of work performed.

Hooper AC & Heating

Hooper AC & Heating operates from 5005 Signal Bell Ln Ste 835, Clarksville, MD 21029 and can be reached at (410) 762-3949. Its listing shows a general-contractor category together with published 24/7 availability. The firm posted a raw rating of 5 across 51 reviews. The adjusted score used for ranking is 4.973, down 0.027 from the raw figure because the national mean sits at 4.764 and 51 reviews still allow modest regression. These numbers cannot reveal whether the firm maintains its own installation crews or subcontracts field work.

Bob's Air Duct Clean HVAC Contractors

Bob's Air Duct Clean HVAC Contractors lists its address as 1101 N Rolling Rd #303, Catonsville, MD 21228 and its phone as (443) 348-9758. The Services category appears without a 24/7 claim. Across 46 reviews the raw rating reached 5. The adjusted score stands at 4.947, pulled down 0.053 from the raw value by the same national mean. The numbers leave open the question of whether duct cleaning forms the bulk of recent jobs or whether full system replacements dominate.

Shemtov Systems Heating & Air Conditioning

Shemtov Systems Heating & Air Conditioning is located at 604 Ridgewell Way, Silver Spring, MD 20902 and answers calls at (240) 355-3333. Its general-contractor listing includes 24/7 availability. Sixty reviews produced a raw rating of 4.9. The adjusted score of 4.915 sits 0.015 below the raw rating because the review count remains moderate relative to the national mean of 4.764. The figures give no indication of average job size or typical lead times.

Climate Pro Mechanical LLC

Climate Pro Mechanical LLC operates from 3717 Ligon Rd, Ellicott City, MD 21042 and lists the number (301) 205-0109. The general-contractor category shows no 24/7 notation. Seventy-seven reviews yielded a raw rating of 4.9. The adjusted score reaches 4.902, only 0.002 below the raw value, as the larger review count limits movement toward the national mean. The data do not disclose whether the firm holds manufacturer certifications for specific brands.

Husky Home Services

Husky Home Services lists 8414 Church Ln Rd, Ellicott City, MD 21043 and the phone (410) 988-5184. Its general-contractor entry includes 24/7 availability and no website. Forty-eight reviews produced a raw rating of 4.9. The adjusted score of 4.868 reflects a 0.032 drop from the raw rating, consistent with the moderate review volume and the national mean. The numbers supply no detail on response times during peak summer weeks.

ASC HVAC

ASC HVAC is based at 13655 Triadelphia Rd, Glenelg, MD 21737 and can be called at (301) 854-6788. The general-contractor listing notes a public website but no 24/7 service. Fifteen reviews produced a raw rating of 4.7. The adjusted score of 4.783 sits 0.083 above the raw rating because the small sample allows stronger upward pull toward the national mean of 4.764. The figures cannot indicate whether the firm routinely handles new construction or focuses on replacements.

Maryland Heating & Cooling

Maryland Heating & Cooling operates from 4943 Roundhill Rd, Ellicott City, MD 21043 and lists the number (410) 465-0081. Its general-contractor entry carries neither a website nor 24/7 notation. Twenty-four reviews produced a raw rating of 4.7. The adjusted score equals the raw rating at 4.736 because the review count and distance from the national mean produced no net movement. The numbers leave open the question of how often the firm performs emergency repairs versus planned maintenance.

Licensing and permits in Maryland

HVACR licensing is issued statewide by the Maryland Board of Heating, Ventilation, Air Conditioning and Refrigeration Contractors within the Division of Occupational and Professional Licensing, Maryland Department of Labor. The board issues Master HVACR Contractor, Master Restricted Contractor and Limited Contractor licenses. General liability insurance of at least $300,000 and property damage liability of at least $100,000 are required, with the combined coverage totaling at least $400,000. The state does not mandate workers-compensation insurance as part of the HVACR license. Permits are not uniformly state-controlled; county and municipal building departments issue mechanical or HVAC permits, and some jurisdictions add their own license requirements. Homeowners can verify licenses through the board lookup tool and should confirm any additional county rules before work begins.

Local climate demands on HVAC systems

Howard County falls primarily in IECC zone 4A with a moist regime. Heating degree days total 4,400 while cooling degree days reach 1,300, producing a heating-leaning mixed load profile. Winter design temperature is 15 °F and summer design temperature is 93 °F, with humid summers. Natural gas remains the dominant heating fuel, yet heat pumps show very good suitability. Central air-conditioning saturation is already high. Equipment must handle both winter heating peaks and summer humidity removal without oversizing that would shorten run times and reduce dehumidification. Western portions of the county edge into zone 5A, requiring attention to colder design conditions during equipment selection.

Available incentives for 2026

Maryland HERO and HEAR programs remain conditionally approved with an administrator RFP issued; a planned $8,000 heat-pump rebate is listed. The MEA Clean Energy Grant covers geothermal systems, while no state income-tax credit applies to air-source heat pumps. EmPOWER Maryland utility rebates range from $300 to $1,500 and require use of a participating contractor from the networks of BGE, Pepco, Delmarva, Potomac Edison, SMECO or Washington Gas. The 25C and 25D federal tax credits expired at the end of 2025, leaving no residential federal HVAC credit for 2026. The 48E investment tax credit survives only for commercial or third-party-owned systems. Homeowners should therefore prioritize contractors already enrolled in EmPOWER networks to access the largest available rebates.

How to choose an HVAC contractor

Verify both the statewide HVACR license through the Maryland Department of Labor lookup and MHIC registration for access to the Guaranty Fund. Confirm EmPOWER participating-contractor status when utility rebates are part of the project economics. Request the mechanical permit from the local Howard County building department before work starts. Compare the two published cost ranges against the specific equipment and scope quoted. Check published availability against expected peak-season demand.