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O'Brien Mechanical, LLCHVAC contractor in Greencastle, IN

O'Brien Mechanical, LLC is an HVAC contractor in Greencastle, IN, ranked #20 of 41 HVAC contractors in Greencastle and rated 5.0 from 6 Google reviews. Open Monday to Friday.

Greencastle, INUpdated 0 paid placements in any rankingHow we rank

Call (765) 653-8688Website ↗

Key facts

Key facts about O'Brien Mechanical, LLC
Phone(765) 653-8688
Websiteobrienhvacr.com
HoursMonday to Friday: 8 AM – 4 PM
Google rating5.0 from 6 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Greencastle and 12 towns within 25 miles: Avon, Danville, Plainfield, Fairfield Heights, Brownsburg, Speedway, Mooresville, Indianapolis, Zionsville, Whitestown, Broad Ripple and Beech Grove.

Based in Greencastle, INView on map

Opening hours

Opening hours for O'Brien Mechanical, LLC
DayHours
Monday8 AM – 4 PM
Tuesday8 AM – 4 PM
Wednesday8 AM – 4 PM
Thursday8 AM – 4 PM
Friday8 AM – 4 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.

Compare nearby HVAC contractors

O'Brien Mechanical, LLC compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
O'Brien Mechanical, LLC (this business)—535.0 (6)—NoNo
Aire Serv of Avon-Plainfield#18535.0 (12)—YesYes0.7 mi
Keys Heating and Cooling#19534.7 (13)—YesYes0.0 mi
Fairtech Heating , Cooling , Appliance Repair#21535.0 (8)—YesYes0.0 mi

See all 41 ranked HVAC contractors in Greencastle

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

5.0from 6 Google reviews

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Questions about O'Brien Mechanical, LLC

How is O'Brien Mechanical, LLC ranked in Greencastle?

O'Brien Mechanical, LLC is ranked #20 of 41 HVAC contractors in Greencastle by CR Score, with 53 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 O'Brien Mechanical, LLC’s hours?

O'Brien Mechanical, LLC is open Monday to Friday. Its listed hours are Monday to Friday, 8 AM – 4 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does O'Brien Mechanical, LLC serve?

Serves Greencastle and 12 towns within 25 miles: Avon, Danville, Plainfield, Fairfield Heights, Brownsburg, Speedway, Mooresville, Indianapolis, Zionsville, Whitestown, Broad Ripple and Beech Grove. 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 O'Brien Mechanical, LLC?

O'Brien Mechanical, LLC has a rating of 5.0 from 6 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 O'Brien Mechanical, LLC?

Call O'Brien Mechanical, LLC on (765) 653-8688. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

Own O'Brien Mechanical, LLC? Claim this profile.

Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.

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