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Caldera A/C & Heating LLCHVAC contractor in Fond du Lac, WI

Caldera A/C & Heating LLC is an HVAC contractor at 231 S Main St, Fond du Lac, WI 54935, ranked #26 of 41 HVAC contractors in Fond du Lac and rated 2.3 from 64 Google reviews. Open 7 days a week.

Fond du Lac, WIUpdated 0 paid placements in any rankingHow we rank

Call (920) 238-5994

Key facts

Key facts about Caldera A/C & Heating LLC
Address231 S Main St, Fond du Lac, WI 54935Get directions
Phone(920) 238-5994
HoursMonday to Saturday: 8 AM – 9 PM; Sunday: 9 AM – 5 PM
Google rating2.3 from 64 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Fond du Lac and 5 towns within 25 miles: North Fond du Lac, Waupun, Oshkosh, Ripon and Plymouth.

Based in Fond du Lac, WIView on map

Opening hours

Opening hours for Caldera A/C & Heating LLC
DayHours
Monday8 AM – 9 PMevening
Tuesday8 AM – 9 PMevening
Wednesday8 AM – 9 PMevening
Thursday8 AM – 9 PMevening
Friday8 AM – 9 PMevening
Saturday8 AM – 9 PMevening
Sunday9 AM – 5 PM
  • Open evenings (after 6 PM)
  • Open Saturdays
  • Open Sundays

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

Caldera A/C & Heating LLC compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Caldera A/C & Heating LLC (this business)—522.3 (64)—YesYes
Fusion Heating and Cooling LLC#24524.8 (26)———21.6 mi
Heating & Cooling#25523.7 (6)—YesYes16.7 mi
American Heating & Air Conditioning#27525.0 (3)—YesYes17.0 mi

See all 41 ranked HVAC contractors in Fond du Lac

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

2.3from 64 Google reviews

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Questions about Caldera A/C & Heating LLC

How is Caldera A/C & Heating LLC ranked in Fond du Lac?

Caldera A/C & Heating LLC is ranked #26 of 41 HVAC contractors in Fond du Lac by CR Score, with 52 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 Caldera A/C & Heating LLC’s hours?

Caldera A/C & Heating LLC is open 7 days a week. Its listed hours are Monday to Saturday, 8 AM – 9 PM; Sunday, 9 AM – 5 PM. On Saturdays it is open 8 AM to 9 PM, and on Sundays 9 AM to 5 PM. Hours come from the business listing; holiday hours may differ.

What areas does Caldera A/C & Heating LLC serve?

Serves Fond du Lac and 5 towns within 25 miles: North Fond du Lac, Waupun, Oshkosh, Ripon and Plymouth. 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 Caldera A/C & Heating LLC?

Caldera A/C & Heating LLC has a rating of 2.3 from 64 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.

How do I contact Caldera A/C & Heating LLC?

Call Caldera A/C & Heating LLC on (920) 238-5994. The business is at 231 S Main St, Fond du Lac, WI 54935. Ask for a written estimate before any work starts.

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