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H & A Mechanical Services IncHVAC contractor in Saint Charles, MO

H & A Mechanical Services Inc is an HVAC contractor at 1335 Charlestown Industrial Dr, St Charles, MO 63303. Open Monday to Friday.

Saint Charles, MO0 paid placements in any rankingHow we rank

Call (636) 856-1750

Key facts

Key facts about H & A Mechanical Services Inc
Address1335 Charlestown Industrial Dr, St Charles, MO 63303, Saint Charles, MOGet directions
Phone(636) 856-1750
HoursMonday to Friday: 6 AM – 2:30 PM

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Saint Charles and 11 towns within 25 miles: Saint Peters, Bridgeton, Maryland Heights, Chesterfield, Saint Ann, Hazelwood, Creve Coeur, Weldon Spring, O'Fallon, Overland and Saint John.

Based in Saint Charles, MOView on map

Opening hours

Opening hours for H & A Mechanical Services Inc
DayHours
Monday6 AM – 2:30 PM
Tuesday6 AM – 2:30 PM
Wednesday6 AM – 2:30 PM
Thursday6 AM – 2:30 PM
Friday6 AM – 2:30 PM
SaturdayClosed
SundayClosed
  • Open evenings — no
  • Open Saturdays — no
  • Open Sundays — no

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.

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Questions about H & A Mechanical Services Inc

What are H & A Mechanical Services Inc’s hours?

H & A Mechanical Services Inc is open Monday to Friday. Its listed hours are Monday to Friday, 6 AM – 2:30 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does H & A Mechanical Services Inc serve?

Serves Saint Charles and 11 towns within 25 miles: Saint Peters, Bridgeton, Maryland Heights, Chesterfield, Saint Ann, Hazelwood, Creve Coeur, Weldon Spring, O'Fallon, Overland and Saint John. 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.

How do I contact H & A Mechanical Services Inc?

Call H & A Mechanical Services Inc on (636) 856-1750. The business is at 1335 Charlestown Industrial Dr, St Charles, MO 63303, Saint Charles, MO. Ask for a written estimate before any work starts.

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