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By CR Score, the highest-ranked HVAC contractor in Claymont, DE is Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical with a CR Score of 65/100. It has 4.8★ from 9,075 Google reviews. It is open 24/7. Done Right Today (#2) and DelFera Heating, Cooling, & Electric (#3) follow. We ranked 736 HVAC contractors on ten factors, last updated October 22, 2026.
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ContractorsRanked ranks 736 HVAC contractors serving Claymont, DE. 2 of them are based in Claymont; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
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287 ranked HVAC contractors in Claymont post 24/7 hours. The highest-ranked are Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical (#1), Done Right Today (#2) and DelFera Heating, Cooling, & Electric (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
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464 of 736 ranked HVAC contractors post Saturday hours and 373 post Sunday hours. The highest-ranked open Saturdays are Horizon Services - Air Conditioning, Heating, Plumbing, & Electrical (#1), Done Right Today (#2) and DelFera Heating, Cooling, & Electric (#3). Posted hours are office hours; crews may book weekend jobs separately.
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In Delaware, Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners handles licensing and covers Heating, ventilation, air conditioning and refrigeration work. Search the business or license number at https://delpros.delaware.gov/OH_VerifyLicense.
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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 Claymont. Prices were last checked October 2026. Get at least two written quotes before you hire.
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The median Google rating among 736 rated HVAC contractors in Claymont is 4.9★, with a median of 24 reviews. Harris Plumbing, Heating, Air & Electrical has the most, 11,049 reviews, and ranks #6. We adjust ratings for review count, so a few five-star reviews cannot top the list.
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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.