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123 MechanicalHVAC contractor in McHenry, IL

123 Mechanical is an HVAC contractor at 5706 Landcaster Cir, McHenry, IL 60050, rated 5.0 from 5 Google reviews. Open 24 hours a day, 7 days a week.

McHenry, IL0 paid placements in any rankingHow we rank

Call (815) 800-3279Website ↗

Key facts

Key facts about 123 Mechanical
Address5706 Landcaster Cir, McHenry, IL 60050Get directions
Phone(815) 800-3279
Website123mechanical.com
HoursOpen 24 hours, 7 days a week
Google rating5.0 from 5 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category
  • Electricaladditional Google category

Service area

Serves McHenry and 11 towns within 25 miles: Johnsburg, Lakemoor, Crystal Lake, Island Lake, Woodstock, Fox Lake, Spring Grove, Cary, Wauconda, Lake in the Hills and Round Lake.

Based in McHenry, ILView on map

Opening hours

Opening hours for 123 Mechanical
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.

Reviews

ContractorsRanked reviews

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Google

5.0from 5 Google reviews

Hired 123 Mechanical? Write a review

Questions about 123 Mechanical

What are 123 Mechanical’s hours?

123 Mechanical 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 123 Mechanical serve?

Serves McHenry and 11 towns within 25 miles: Johnsburg, Lakemoor, Crystal Lake, Island Lake, Woodstock, Fox Lake, Spring Grove, Cary, Wauconda, Lake in the Hills and Round Lake. 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 123 Mechanical?

123 Mechanical has a rating of 5.0 from 5 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 123 Mechanical?

Call 123 Mechanical on (815) 800-3279. The business is at 5706 Landcaster Cir, McHenry, IL 60050. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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