78
StrongEllicott City, Maryland · HVAC
HVAC contractors in Ellicott City, MD
12 HVAC contractors in Ellicott City, out of 12 HVAC and plumbing businesses the Registry lists there. Ranked by Registry Score, owner-confirmed records first.
- Pros
- 12
- Avg. score
- 51.7
- Scored
- 11
Summary
Data last updatedAs of October 14, 2026, the ProComfort Registry lists 12 HVAC contractors in Ellicott City, Maryland. Most-listed specialties: heating & furnaces (11), air conditioning (10), commercial (1). 11 have enough public signals for a Registry Score, averaging 51.7 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. 5 are Featured for 2026. View Keller Plumbing & Heating LLC.
Counts come straight from the Registry's records. How the Registry Score works
Featured HVAC contractors in Ellicott City
72
Strong71
Strong22
Developing14
DevelopingShowing 1–12 of 12
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
Developing22
Developing14
Developing—
Not yet ratedHVAC contractors in Ellicott City: at a glance
- How many HVAC contractors are in Ellicott City, Maryland?
- As of October 14, 2026, the ProComfort Registry lists 12 HVAC contractors in Ellicott City, Maryland.
- Who is the highest-scored HVAC contractor in Ellicott City, Maryland?
- By Registry Score, Keller Plumbing & Heating LLC (Ellicott City, MD) ranks first at 78 out of 100, among 11 scored businesses averaging 51.7. 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, Crouse Plumbing & Heating, Daniel's HVAC. Featured companies are selected editorially from public reviews and track record; listings and rankings are never sold.
- How are HVAC 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: heating, ventilation and air conditioning businesses (furnaces, heat pumps, A/C, climate control). Tags come from each business's public category and name, so a company can appear under several trades. HVAC contractors across the US