Sentinel Heating & Cooling
107 Google reviews
Ductless Mini Splits in Oshawa
5 photos published on this company’s Google Business Profile, collected August 2026. We did not take them and cannot confirm they show this company’s own work.
Heat pump work confirmed on their website
Last updated: By HeatPumpIndex Evidence Desk
About Sentinel Heating & Cooling
HeatPumpIndex lists Sentinel Heating & Cooling as a ductless mini split installer serving Oshawa, rated 5.0★ across 107 Google reviews.
Trusted HVAC services in the GTA with transparent pricing, and a community focus. We provide quick and reliable heating, cooling, and ventilation solutions.
What their own website says about heat pumps
oner Furnace Water Heater Tankless Water Heater Boiler Heat Pump Ductless Ductwork Gas Line Rooftop Unit Water Softener Fireplace
Quoted as found from their own site. How we match evidence.
The HeatPumpIndex score, line by line
69out of 100
- Reviews and reputation43 of 45
- Google rating, adjusted for how many reviews stand behind it (4.98 of 5)+30
- How many Google reviews there are (107)+13
- What it states on its own website11 of 30
- Says it holds a trade licence, without naming the registrar+7
- Says it is insured, bonded, or carries WSIB coverage+4
- Website and record15 of 25
- The website answered when we fetched it+8
- Its own website mentions heat pump work+4
- Posts its opening hours+2
- Has three or more photos+1
Reviews and reputation counts for 45 of the 100, what the company states on its own website for 30, and its website and record for 25. Nothing in this panel has been checked by anyone here: the middle pillar is the company writing about itself and a crawler reading the sentence. How the score is built.
What this site read
Statements on Sentinel Heating & Cooling’s own website
- Says it holds a trade licence
- Says it is insured
Each line above is a sentence a crawler found on that company’s website when the site was read on 2026-08-30. Nobody here rang a regulator or looked at a certificate, which is why every line begins “Says it”.
What reviewers kept coming back to
- Heat pump install
- “his crew installed Heat Pump and Furnace which were qualified for Government rebate program”
- Furnace install
- “his crew installed Heat Pump and Furnace which were qualified for Government rebate program”
- Water heater or tankless
- “We opted for the Rinnai tankless unit with the small buffer tank”
- No pressure quote
- “I felt no pressure to make the decision to go with them and they did not try to up sell additional p”
- Quick installation
- “Everything was done in one day and it is working great”
- Honest about what was needed
- “AJ checked both and told me furnace was in good shape”
Themes come only from the Google reviews already stored against this listing, and each one carries the reviewer’s own sentence. A listing with fewer than three stored reviews gets none at all.
Services
- Ductless Mini Splits
- Maintenance Plans
What customers say
“I was introduced to Ajan through a close friend and couldn’t be happier with his work. He installed our hot water tank two years ago and did an excellent job - fast, professional, and very thorough. He answered all my…”
Suevia Google reviews4 months ago
“My Hot water/Heating unit which we rented from Reliance stopped working on the week before Christmas. AJ from Sentinel Heating submitted a quote along with 4 other companies. We opted for the Rinnai tankless unit with the small buffer tank.…”
W.via Google reviews4 months ago
“We are very happy with the work by AJ and his team at Sentinel. We learned of them through a contractor contact on some other work. AJ came for a site visit, answered all questions and then sent out a…”
Jenvia Google reviewsa month ago
“A friend of ours recommended AJ and his team after re-doing their entire HVAC system in their new build, and we're so glad they did! Our furnace died out of no where and when we reached out to AJ he…”
Shannonvia Google reviews4 months ago
“Thumbs up, 5 stars, would definitely recommend! Our original-to-the-house furnace conked out at the most inconvenient of times a few weeks ago, and AJ was a lifesaver. He came highly recommended by a few of our friends, and did not…”
Jenvia Google reviews4 months ago
Hours
8 a.m.–9 p.m., every day
Before you book, read the questions to ask ductless mini split installers.
Similar companies nearby
Sentinel Heating & Cooling: frequently asked questions
Is Sentinel Heating & Cooling well reviewed?
- Sentinel Heating & Cooling holds a 5.0-star Google rating across 107 reviews. That is a strong score for a ductless mini split installer in the Greater Toronto Area.
Where does Sentinel Heating & Cooling operate?
- Sentinel Heating & Cooling works out of Oshawa in the Durham area and serves surrounding Greater Toronto Area neighbourhoods. Its listed address is 62 Cromwell Ave, Oshawa, ON L1J 4T6.
How do I get a quote from Sentinel Heating & Cooling?
- You can contact Sentinel Heating & Cooling directly or through its website.
What does Sentinel Heating & Cooling charge for ductless mini split installation?
- Sentinel Heating & Cooling sets its own prices, but as a market benchmark single zone ductless mini split, standard model runs $3,000 to $4,500 per project (CAD) across the GTA, according to Megacity HVAC (Toronto, 2026). Add 13% HST, and request an itemized quote for numbers specific to your project.