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MJS A/C and Heating LLCHVAC contractor in Katy, TX

MJS A/C and Heating LLC is an HVAC contractor at 21811 Katy Fwy, Katy, TX 77450, ranked #6 of 642 HVAC contractors in Katy and rated 5.0 from 151 Google reviews. Open 24 hours a day, 7 days a week.

Katy, TXUpdated 0 paid placements in any rankingHow we rank

Call (281) 630-1129Website ↗

Key facts

Key facts about MJS A/C and Heating LLC
Address21811 Katy Fwy, Katy, TX 77450Get directions
Phone(281) 630-1129
Websitemjsairconditioning.com
HoursOpen 24 hours, 7 days a week
Google rating5.0 from 151 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Katy and 11 towns within 25 miles: Cinco Ranch, Mission Bend, Four Corners, Alief, Pecan Grove, Fulshear, Brookshire, Sugar Land, Cypress, Jersey Village and New Territory.

Based in Katy, TXView on map

Opening hours

Opening hours for MJS A/C and Heating LLC
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

MJS A/C and Heating LLC compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
MJS A/C and Heating LLC (this business)—625.0 (151)—YesYes
4C AC & Heating Repair#4635.0 (972)—YesYes4.7 mi
Just Fix It Today#5634.8 (434)—YesYes0.1 mi
Ideal Air Services#7624.9 (693)—YesYes0.5 mi

See all 642 ranked HVAC contractors in Katy

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

5.0from 151 Google reviews

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Questions about MJS A/C and Heating LLC

How is MJS A/C and Heating LLC ranked in Katy?

MJS A/C and Heating LLC is ranked #6 of 642 HVAC contractors in Katy by CR Score, with 62 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 MJS A/C and Heating LLC’s hours?

MJS A/C and Heating LLC 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 MJS A/C and Heating LLC serve?

Serves Katy and 11 towns within 25 miles: Cinco Ranch, Mission Bend, Four Corners, Alief, Pecan Grove, Fulshear, Brookshire, Sugar Land, Cypress, Jersey Village and New Territory. 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 MJS A/C and Heating LLC?

MJS A/C and Heating LLC has a rating of 5.0 from 151 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 MJS A/C and Heating LLC?

Call MJS A/C and Heating LLC on (281) 630-1129. The business is at 21811 Katy Fwy, Katy, TX 77450. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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