+
By CR Score, the highest-ranked HVAC contractor in Elkridge, MD is Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical with a CR Score of 92/100. It has 4.8★ from 4,514 Google reviews. It is open 24/7. Complete Climate Services LLC (#2) and Boothe's Heating, Air, Plumbing, Drains & Electrical (#3) follow. We ranked 848 HVAC contractors on 8 factors, last updated October 22, 2026.
+
ContractorsRanked ranks 848 HVAC contractors serving Elkridge, MD. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
+
237 ranked HVAC contractors in Elkridge post 24/7 hours. The highest-ranked are Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical (#1), Complete Climate Services LLC (#2) and Boothe's Heating, Air, Plumbing, Drains & Electrical (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
+
503 of 848 ranked HVAC contractors post Saturday hours and 370 post Sunday hours. The highest-ranked open Saturdays are Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical (#1), Complete Climate Services LLC (#2) and Boothe's Heating, Air, Plumbing, Drains & Electrical (#3). Posted hours are office hours; crews may book weekend jobs separately.
+
In Maryland, Maryland State Board of Heating, Ventilation, Air-Conditioning and Refrigeration Contractors handles licensing and covers Heating, ventilation, air conditioning and refrigeration work.
+
AC replacement typically costs $3,887 to $8,073, with $5,978 typical (Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Elkridge. Prices were last checked October 2026. Get at least two written quotes before you hire.
+
The median Google rating among 848 rated HVAC contractors in Elkridge is 4.8★, with a median of 21 reviews. Len The Plumber Heating & Air, LLC has the most, 15,911 reviews, and ranks #7. We adjust ratings for review count, so a few five-star reviews cannot top the list.
+
HVAC demand peaks in summer for cooling and in winter for heating. Spring and fall are the easiest times to book maintenance or a replacement.