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  1. Home
  2. Sioux City, IA
  3. O'Connor Heating & Cooling

O'Connor Heating & Cooling

O'Connor Heating & Cooling is a HVAC provider serving Sioux City, IA. Rated 4.3★ with 60 Google reviews. See services, review signals, and request a quote.

4.3★ (60 reviews)HVACSioux City, IA
On this page▾
  1. 1.Company overview
  2. 2.Photos
  3. 3.What customers say
  4. 4.Key highlights
  5. 5.Explore nearby research
  6. 6.Frequently asked questions

Company overview

  • TradeHVAC
  • Service areaSioux City, IA
  • Google rating4.3★ (60 reviews)
  • Phone(712) 490-7827
  • Address3812 Floyd Blvd, Sioux City, IA 51108, USA

Photos

  • O'Connor Heating & Cooling photo 1
  • O'Connor Heating & Cooling photo 2
  • O'Connor Heating & Cooling photo 3
  • O'Connor Heating & Cooling photo 4
  • O'Connor Heating & Cooling photo 5

Photos from O'Connor Heating & Cooling

What customers say

★★★★★

“I would like to give a very big shout out to O’Connor Heating & Cooling and their incredible team. Having worked in property management for several years, I’ve been fortunate to learn quite a bit abou…”

— Stacy Gran, a month ago
★★★★★

“O'Connor Is amazing! They've helped us twice with our AC and Furnace- once in the summer and once in the winter. Our unit is on the way out and we are just trying to keep it going as long as possible.…”

— Lauren Edwards, a year ago
★☆☆☆☆

“These people have a complete disregard for life during the winter. Whoever was flying down 75 in their plow truck almost hit a car because they think they have to do 65mph in the snow. I would never h…”

— Chad, 4 months ago
★☆☆☆☆

“Had these guys come out to my parents house in leeds. Told my parents they needed a new unit , that theirs was really old and unfixable. . They were about to pull the trigger and buy a 5000$ unit fr…”

— Chris M, 8 months ago
★★★★★

“We have used O'Connor for over 15 years. Every time I have called, they have been nice, professional, fast, and very good at diagnosing and fixing the problem. We have called over holiday weekends, du…”

— Sara Bunker, a year ago

Key highlights

Strengths

    Things to ask

    • Confirm availability for your area and timeline
    • Ask about warranty terms on parts and labor
    • Request a written estimate before work begins
    • Ask about payment plans or financing

    Explore nearby research

    • Sioux City, IA HVAC pros
    • Best HVAC in Sioux City
    • HVAC cost in Sioux City
    • Best HVAC in Des Moines, IA
    • Best HVAC in Cedar Rapids, IA
    • Best HVAC in Davenport, IA
    • Best HVAC in Iowa City, IA

    Frequently Asked Questions

    • What services does O'Connor Heating & Cooling offer?

      O'Connor Heating & Cooling provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Sioux City, IA.

    • What is O'Connor Heating & Cooling's rating?

      O'Connor Heating & Cooling has a 4.3 out of 5 star rating based on 60 Google reviews.

    • Is this company licensed in Iowa?

      All listed providers have a verified Iowa contractor license at time of publication. You can verify on the Iowa Division of Labor — Plumbing and Mechanical Systems Board (statewide mechanical journeyman/contractor license for plumbing, hydronic, and HVAC-R work) lookup at https://plb.iowa.gov/license-search.

    • Does O'Connor Heating & Cooling offer emergency service?

      Contact them directly to ask about emergency availability and after-hours service.

    • How do I request a quote?

      Use the CTA below to submit your ZIP. You can message this company alongside two or three other local pros for easy comparison.

    ✓ Licensing verified 2026-04-23. Reviews refreshed 2026-04-23.

    Licensing data: Iowa Division of Labor — Plumbing and Mechanical Systems Board (statewide mechanical journeyman/contractor license for plumbing, hydronic, and HVAC-R work) · Company data: verified business records + Google Business profile

    See our editorial standards · Report inaccurate info about O'Connor Heating & Cooling

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