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By CR Score, the highest-ranked plumber in Sun Prairie, WI is Cardinal Heating, Cooling, Plumbing & Electric with a CR Score of 92/100. It has 4.9★ from 4,888 Google reviews. It is open 24/7. Action Plumbing, Heating, Air Conditioning and Electric, Inc. (#2) and RG Heating Cooling Plumbing (#3) follow. We ranked 95 plumbers on 8 factors, last updated October 22, 2026.
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ContractorsRanked ranks 95 plumbers serving Sun Prairie, WI. 2 of them are based in Sun Prairie; the rest serve it from nearby towns. Counts are as of October 2026.
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18 ranked plumbers in Sun Prairie post 24/7 hours. The highest-ranked are Cardinal Heating, Cooling, Plumbing & Electric (#1), Action Plumbing, Heating, Air Conditioning and Electric, Inc. (#2) and RG Heating Cooling Plumbing (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
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23 of 95 ranked plumbers post Saturday hours and 19 post Sunday hours. The highest-ranked open Saturdays are Cardinal Heating, Cooling, Plumbing & Electric (#1), Action Plumbing, Heating, Air Conditioning and Electric, Inc. (#2) and RG Heating Cooling Plumbing (#3). Posted hours are office hours; crews may book weekend jobs separately.
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In Wisconsin, Wisconsin Department of Safety and Professional Services handles licensing and covers Plumbing work: water supply, drain, waste and vent piping and fixtures. Search the business or license number at https://online.drl.wi.gov/LicenseLookup/OrgCredentialSearchResults.aspx.
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Water heater replacement typically costs $882 to $1,826, with $1,348 typical (Per unit, installed (unit plus labor); typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Sun Prairie. Prices were last checked October 2026. Get at least two written quotes before you hire.
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The median Google rating among 95 rated plumbers in Sun Prairie is 4.8★, with a median of 21 reviews. Cardinal Heating, Cooling, Plumbing & Electric has the most, 4,888 reviews, and ranks #1. We adjust ratings for review count, so a few five-star reviews cannot top the list.
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Each plumber gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.