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Harmonic Heating & Air Conditioning-Crystal LakeHVAC contractor in Crystal Lake, IL

Harmonic Heating & Air Conditioning-Crystal Lake is an HVAC contractor at 101 N Virginia St, Crystal Lake, IL 60014, rated 4.9 from 445 Google reviews. Open Monday to Friday.

Crystal Lake, IL0 paid placements in any rankingHow we rank

Call (800) 350-4822Website ↗

Key facts

Key facts about Harmonic Heating & Air Conditioning-Crystal Lake
Address101 N Virginia St, Crystal Lake, IL 60014Get directions
Phone(800) 350-4822
Websiteofficialhvac.com
HoursMonday to Friday: 8 AM – 5 PM
Google rating4.9 from 445 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Crystal Lake and 11 towns within 25 miles: Lake in the Hills, Cary, Algonquin, Huntley, McHenry, Woodstock, Island Lake, Lakemoor, Carpentersville, Gilberts and Wauconda.

Based in Crystal Lake, ILView on map

Opening hours

Opening hours for Harmonic Heating & Air Conditioning-Crystal Lake
DayHours
Monday8 AM – 5 PM
Tuesday8 AM – 5 PM
Wednesday8 AM – 5 PM
Thursday8 AM – 5 PM
Friday8 AM – 5 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.

Reviews

ContractorsRanked reviews

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Google

4.9from 445 Google reviews

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Questions about Harmonic Heating & Air Conditioning-Crystal Lake

What are Harmonic Heating & Air Conditioning-Crystal Lake’s hours?

Harmonic Heating & Air Conditioning-Crystal Lake is open Monday to Friday. Its listed hours are Monday to Friday, 8 AM – 5 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does Harmonic Heating & Air Conditioning-Crystal Lake serve?

Serves Crystal Lake and 11 towns within 25 miles: Lake in the Hills, Cary, Algonquin, Huntley, McHenry, Woodstock, Island Lake, Lakemoor, Carpentersville, Gilberts and Wauconda. 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 Harmonic Heating & Air Conditioning-Crystal Lake?

Harmonic Heating & Air Conditioning-Crystal Lake has a rating of 4.9 from 445 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 Harmonic Heating & Air Conditioning-Crystal Lake?

Call Harmonic Heating & Air Conditioning-Crystal Lake on (800) 350-4822. The business is at 101 N Virginia St, Crystal Lake, IL 60014. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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