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Klaus & Sons Plumbing, Heating & Air ConditioningHVAC contractor in Montclair, CA

Klaus & Sons Plumbing, Heating & Air Conditioning is an HVAC contractor at 5623 E Arrow Hwy, Montclair, CA 91763, ranked #2 of 1,003 HVAC contractors in Montclair and rated 4.9 from 977 Google reviews. Open 24 hours a day, 7 days a week.

Montclair, CAUpdated 0 paid placements in any rankingHow we rank

Call (909) 982-5698Website ↗

Key facts

Key facts about Klaus & Sons Plumbing, Heating & Air Conditioning
Address5623 E Arrow Hwy, Montclair, CA 91763Get directions
Phone(909) 982-5698
Websiteklausandsons.com
HoursOpen 24 hours, 7 days a week
Google rating4.9 from 977 Google reviews

Trades

Each trade shows the evidence we matched it on.

Service area

Serves Montclair and 11 towns within 25 miles: Upland, Claremont, Ontario, Pomona, La Verne, Rancho Cucamonga, Chino, San Dimas, Chino Hills, Los Serranos and Diamond Bar.

Based in Montclair, CAView on map

Opening hours

Opening hours for Klaus & Sons Plumbing, Heating & Air Conditioning
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

Klaus & Sons Plumbing, Heating & Air Conditioning compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Klaus & Sons Plumbing, Heating & Air Conditioning (this business)—654.9 (977)—YesYes
All Pro Cooling, Heating, Plumbing & Electrical#1654.8 (7,425)—YesYes8.1 mi
Steve's Five Star Service#3654.9 (1,292)—YesYes0.8 mi
Rooter Hero Plumbing & Air#4644.8 (802)—YesYes1.2 mi

See all 1003 ranked HVAC contractors in Montclair

Reviews

ContractorsRanked reviews

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Google

4.9from 977 Google reviews

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Questions about Klaus & Sons Plumbing, Heating & Air Conditioning

How is Klaus & Sons Plumbing, Heating & Air Conditioning ranked in Montclair?

Klaus & Sons Plumbing, Heating & Air Conditioning is ranked #2 of 1,003 HVAC contractors in Montclair by CR Score, with 65 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 Klaus & Sons Plumbing, Heating & Air Conditioning’s hours?

Klaus & Sons Plumbing, Heating & Air Conditioning 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 Klaus & Sons Plumbing, Heating & Air Conditioning serve?

Serves Montclair and 11 towns within 25 miles: Upland, Claremont, Ontario, Pomona, La Verne, Rancho Cucamonga, Chino, San Dimas, Chino Hills, Los Serranos and Diamond Bar. 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 Klaus & Sons Plumbing, Heating & Air Conditioning?

Klaus & Sons Plumbing, Heating & Air Conditioning has a rating of 4.9 from 977 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 Klaus & Sons Plumbing, Heating & Air Conditioning?

Call Klaus & Sons Plumbing, Heating & Air Conditioning on (909) 982-5698. The business is at 5623 E Arrow Hwy, Montclair, CA 91763. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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