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21st Century Plumbing Heating & AirHVAC contractor in Diamond Springs, CA

21st Century Plumbing Heating & Air is an HVAC contractor in Diamond Springs, CA, ranked #7 of 174 HVAC contractors in Diamond Springs and rated 4.8 from 33 Google reviews. Open 24 hours a day, 7 days a week.

Diamond Springs, CAUpdated 0 paid placements in any rankingHow we rank

Call (530) 391-3404

Key facts

Key facts about 21st Century Plumbing Heating & Air
Phone(530) 391-3404
HoursOpen 24 hours, 7 days a week
Google rating4.8 from 33 Google reviews

Trades

Each trade shows the evidence we matched it on.

Service area

Serves Diamond Springs and 12 towns within 25 miles: Folsom, Orangevale, Gold River, Fair Oaks, El Dorado Hills, Citrus Heights, Rancho Cordova, Granite Bay, Carmichael, Antelope, Cameron Park and Roseville.

Based in Diamond Springs, CAView on map

Opening hours

Opening hours for 21st Century Plumbing Heating & Air
DayHours
MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours
  • Open 24/7
  • Open evenings — no
  • Open Saturdays
  • Open Sundays
  • Emergency service

Typical heating and cooling prices

Typical heating and cooling prices
JobLowTypicalHigh
AC replacementPer system, installed (unit plus labor); typical range of customer-reported jobs. US national range$3,887$5,978$8,073
Furnace replacementPer system, installed; typical range of customer-reported jobs. US national range$2,823$4,814$6,896

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Compare nearby HVAC contractors

21st Century Plumbing Heating & Air compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
21st Century Plumbing Heating & Air (this business)—604.8 (33)—YesYes
Encore Heating and Air#5614.8 (98)—YesYes18.9 mi
Good Guys Heating & Cooling#6614.9 (929)—YesNo11.5 mi
Brower Mechanical#8604.9 (949)—YesYes12.1 mi

See all 174 ranked HVAC contractors in Diamond Springs

Reviews

ContractorsRanked reviews

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Google

4.8from 33 Google reviews

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Questions about 21st Century Plumbing Heating & Air

How is 21st Century Plumbing Heating & Air ranked in Diamond Springs?

21st Century Plumbing Heating & Air is ranked #7 of 174 HVAC contractors in Diamond Springs by CR Score, with 60 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

What are 21st Century Plumbing Heating & Air’s hours?

21st Century Plumbing Heating & Air is open 24 hours a day, 7 days a week. Its listed hours are Open 24 hours, 7 days a week. On Saturdays it is open Open 24 hours, and on Sundays Open 24 hours. Hours come from the business listing; holiday hours may differ.

What areas does 21st Century Plumbing Heating & Air serve?

Serves Diamond Springs and 12 towns within 25 miles: Folsom, Orangevale, Gold River, Fair Oaks, El Dorado Hills, Citrus Heights, Rancho Cordova, Granite Bay, Carmichael, Antelope, Cameron Park and Roseville. The list is based on the business's location and the usual service radius for heating and cooling. Confirm your address is covered when you call.

What do Google reviews say about 21st Century Plumbing Heating & Air?

21st Century Plumbing Heating & Air has a rating of 4.8 from 33 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

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