78
StrongEllicott City, Maryland · Air conditioning
Air conditioning contractors in Ellicott City, MD
10 air conditioning contractors in Ellicott City, out of 12 HVAC and plumbing businesses the Registry lists there. Ranked by Registry Score, owner-confirmed records first.
- Pros
- 10
- Avg. score
- 59.2
- Scored
- 9
Summary
Data last updatedAs of October 14, 2026, the ProComfort Registry lists 10 air conditioning contractors in Ellicott City, Maryland. Most-listed specialties: heating & furnaces (10), commercial (1). 9 have enough public signals for a Registry Score, averaging 59.2 out of 100; 5 score 70 or higher. Together they hold 1,422 public reviews on Google, Yelp and Facebook. The highest-scored is Keller Plumbing & Heating LLC, at 78 out of 100. 3 are Featured for 2026. View Keller Plumbing & Heating LLC.
Counts come straight from the Registry's records. How the Registry Score works
Featured air conditioning contractors in Ellicott City
72
Strong71
StrongShowing 1–10 of 10
78
StrongEllicott City, MD 21042 4.9(261 reviews)
HVACHeatingA/C
78
StrongEllicott City, MD 21043 4.9(817 reviews)
HVACPlumbingHeatingA/C
72
StrongEllicott City, MD 21043 4.8(72 reviews)
HVACHeatingA/C
71
StrongEllicott City, MD 21042 4.8(59 reviews)
HVACHeatingA/CCommercial
71
StrongEllicott City, MD 21043 4.6(74 reviews)
HVACHeatingA/C
69
EstablishedEllicott City, MD 21043 4.2(125 reviews)
HVACHeatingA/C
35
DevelopingEllicott City, MD 21042 4.2(11 reviews)
HVACHeatingA/C
34
Developing25
Developing—
Not yet ratedAir conditioning contractors in Ellicott City: at a glance
- How many air conditioning contractors are in Ellicott City, Maryland?
- As of October 14, 2026, the ProComfort Registry lists 10 air conditioning contractors in Ellicott City, Maryland.
- Who is the highest-scored air conditioning contractor in Ellicott City, Maryland?
- By Registry Score, Keller Plumbing & Heating LLC (Ellicott City, MD) ranks first at 78 out of 100, among 9 scored businesses averaging 59.2. The score combines public reviews (50 points), digital presence (30) and reach (20); nobody can pay for a higher score.
- Which companies are featured in Ellicott City, Maryland for 2026?
- ProComfort Registry features Keller Plumbing & Heating LLC, Enova Heating & Air Conditioning, Climate Pro Mechanical. Featured companies are selected editorially from public reviews and track record; listings and rankings are never sold.
- How are air conditioning contractors in Ellicott City, Maryland ranked?
- By Registry Score (0-100, from public reviews, digital presence and reach), with records confirmed by their owners listed first. The full method is at https://procomfortregistry.online/methodology.
What this list includes: businesses whose public category or name points to air conditioning or cooling. Tags come from each business's public category and name, so a company can appear under several trades. Air conditioning contractors across the US