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Cullen Heating and Air Conditioning Inc.HVAC contractor in Oshawa, ON

Cullen Heating and Air Conditioning Inc. is an HVAC contractor at 577 Ritson Rd S, Oshawa, ON L1H 5K6, ranked #47 of 274 HVAC contractors in Oshawa and rated 4.3 from 22 Google reviews. Open 7 days a week.

Oshawa, ONUpdated 0 paid placements in any rankingHow we rank

Call (905) 725-9731Website ↗

Key facts

Key facts about Cullen Heating and Air Conditioning Inc.
Address577 Ritson Rd S, Oshawa, ON L1H 5K6Get directions
Phone(905) 725-9731
Websitecullenheatingandair.com
HoursMonday to Friday: 8 AM – 4 PM; Saturday and Sunday: open 24 hours
Google rating4.3 from 22 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Oshawa and 6 towns within 40 km: Ajax, Pickering, Uxbridge, Markham, Scarborough and Port Hope.

Based in Oshawa, ONView on map

Opening hours

Opening hours for Cullen Heating and Air Conditioning Inc.
DayHours
Monday8 AM – 4 PM
Tuesday8 AM – 4 PM
Wednesday8 AM – 4 PM
Thursday8 AM – 4 PM
Friday8 AM – 4 PM
SaturdayOpen 24 hours
SundayOpen 24 hours
  • 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 converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)CA$5,460CA$8,400CA$11,350
Furnace replacementPer system, installed; typical range of customer-reported jobs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)CA$3,970CA$6,770CA$9,690

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Compare nearby HVAC contractors

Cullen Heating and Air Conditioning Inc. compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
Cullen Heating and Air Conditioning Inc. (this business)—584.3 (22)—YesYes
High Efficiency Cooling & Heating Inc.#45584.8 (1,319)—YesYes39.2 km
ICare Home Comfort#46584.9 (836)—YesYes39.2 km
Expert Heating & Air Conditioning#48584.8 (90)—YesYes18.1 km

See all 274 ranked HVAC contractors in Oshawa

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

4.3from 22 Google reviews

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Questions about Cullen Heating and Air Conditioning Inc.

How is Cullen Heating and Air Conditioning Inc. ranked in Oshawa?

Cullen Heating and Air Conditioning Inc. is ranked #47 of 274 HVAC contractors in Oshawa by CR Score, with 58 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 Cullen Heating and Air Conditioning Inc.’s hours?

Cullen Heating and Air Conditioning Inc. is open 7 days a week. Its listed hours are Monday to Friday, 8 AM – 4 PM; Saturday and Sunday, open 24 hours. 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 Cullen Heating and Air Conditioning Inc. serve?

Serves Oshawa and 6 towns within 40 km: Ajax, Pickering, Uxbridge, Markham, Scarborough and Port Hope. 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 Cullen Heating and Air Conditioning Inc.?

Cullen Heating and Air Conditioning Inc. has a rating of 4.3 from 22 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 Cullen Heating and Air Conditioning Inc.?

Call Cullen Heating and Air Conditioning Inc. on (905) 725-9731. The business is at 577 Ritson Rd S, Oshawa, ON L1H 5K6. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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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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